iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
ASTM

ASTM G21-13

(Practice)

Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi

Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi

SIGNIFICANCE AND USE
4.1 The synthetic polymer portion of these materials is usually fungus-resistant in that it does not serve as a carbon source for the growth of fungi. It is generally the other components, such as plasticizers, cellulosics, lubricants, stabilizers, and colorants, that are responsible for fungus attack on plastic materials. To assess materials other than plastics, use of this test method should be agreed upon by all parties involved. It is important to establish the resistance to microbial attack under conditions favorable for such attack, namely, a temperature of 2 to 38°C (35 to 100°F) and a relative humidity of 60 to 100 %.  
4.2 The effects to be expected are as follows:  
4.2.1 Surface attack, discoloration, loss of transmission (optical), and  
4.2.2 Removal of susceptible plasticizers, modifiers, and lubricants, resulting in increased modulus (stiffness), changes in weight, dimensions, and other physical properties, and deterioration of electrical properties such as insulation resistance, dielectric constant, power factor, and dielectric strength.  
4.3 Often the changes in electrical properties are due principally to surface growth and its associated moisture and to pH changes caused by excreted metabolic products. Other effects include preferential growth caused by nonuniform dispersion of plasticizers, lubricants, and other processing additives. Attack on these materials often leaves ionized conducting paths. Pronounced physical changes are observed on products in film form or as coatings, where the ratio of surface to volume is high, and where nutrient materials such as plasticizers and lubricants continue to diffuse to the surface as they are utilized by the organisms.  
4.4 Since attack by organisms involves a large element of chance due to local accelerations and inhibitions, the order of reproducibility may be rather low. To ensure that estimates of behavior are not too optimistic, the greatest observed degree of deterioration should be reported. ...
SCOPE
1.1 This practice covers determination of the effect of fungi on the properties of synthetic polymeric materials in the form of molded and fabricated articles, tubes, rods, sheets, and film materials. Changes in optical, mechanical, and electrical properties may be determined by the applicable ASTM methods.  
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
31-Oct-2013
ICS
83.080.01 - Plastics in general
Technical Committee
G03 - Weathering and Durability
Drafting Committee
G03.04 - Biological Deterioration
Current Stage
Ref Project

Relations

Replaces
ASTM G21-09 - Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi
Effective Date
01-Nov-2013
Referred By
ASTM C1534-22 - Standard Specification for Flexible Polymeric Foam Sheet Insulation Used as a Thermal and Sound Absorbing Liner for Duct Systems
Effective Date
01-Nov-2013
Referred By
ASTM C318/C318M-13(2018) - Standard Specification for Gypsum Formboard
Effective Date
01-Nov-2013
Referred By
ASTM D5590-17(2021) - Standard Test Method for Determining the Resistance of Paint Films and Related Coatings to Fungal Defacement by Accelerated Four-Week Agar Plate Assay
Effective Date
01-Nov-2013
Referred By
ASTM C1705/C1705M-09(2023) - Standard Specification for Structural Cementitious Panels
Effective Date
01-Nov-2013
Referred By
ASTM D6947/D6947M-16(2023) - Standard Specification for Liquid Applied Moisture Cured Polyurethane Coating Used in Spray Polyurethane Foam Roofing System
Effective Date
01-Nov-2013
Referred By
ASTM D6083/D6083M-21 - Standard Specification for Liquid-Applied Acrylic Coating Used in Roofing
Effective Date
01-Nov-2013
Referred By
ASTM E3152-23 - Standard Guide for Standard Test Methods and Practices Available for Determining Antifungal Activity on Natural or Synthetic Substrates Treated with Antimicrobial Agents
Effective Date
01-Nov-2013
Referred By
ASTM D6754/D6754M-23 - Standard Specification for Ketone Ethylene Ester Based Sheet Roofing
Effective Date
01-Nov-2013
Referred By
ASTM C1894-22 - Standard Guide for Microbially Induced Corrosion of Concrete Products
Effective Date
01-Nov-2013
Referred By
ASTM C1822-21 - Standard Specification for Insulating Covers on Accessible Lavatory Piping
Effective Date
01-Nov-2013
Referred By
ASTM F793/F793M-20 - Standard Classification of Wall Coverings by Use Characteristics
Effective Date
01-Nov-2013
Referred By
ASTM G22-23 - Standard Practice for Determining Resistance of Plastics to Bacteria
Effective Date
01-Nov-2013
Referred By
ASTM E1514-98(2017)e1 - Standard Specification for Structural Standing Seam Steel Roof Panel Systems
Effective Date
01-Nov-2013
Referred By
ASTM F104-11(2020) - Standard Classification System for Nonmetallic Gasket Materials
Effective Date
01-Nov-2013

Buy Standard

ASTM G21-13 - Standard Practice for Determining Resistance of Synthetic Polymeric Materials to FungiASTM G21-13 - Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi
PreviousNext
Standard
ASTM G21-13 - Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi
English language
5 pages
sale 15% off
Preview
sale 15% off
Preview
REDLINE ASTM G21-13 - Standard Practice for Determining Resistance of Synthetic Polymeric Materials to FungiREDLINE ASTM G21-13 - Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi
PreviousNext
Standard
REDLINE ASTM G21-13 - Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi
English language
5 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: G21 − 13
StandardPractice for
Determining Resistance of Synthetic Polymeric Materials to
1
Fungi
ThisstandardisissuedunderthefixeddesignationG21;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope D747 Test Method for Apparent Bending Modulus of Plas-
tics by Means of a Cantilever Beam
1.1 This practice covers determination of the effect of fungi
D785 Test Method for Rockwell Hardness of Plastics and
on the properties of synthetic polymeric materials in the form
Electrical Insulating Materials
of molded and fabricated articles, tubes, rods, sheets, and film
D882 Test Method for Tensile Properties of Thin Plastic
materials. Changes in optical, mechanical, and electrical prop-
Sheeting
erties may be determined by the applicable ASTM methods.
D1003 Test Method for Haze and Luminous Transmittance
1.2 The values stated in SI units are to be regarded as the
of Transparent Plastics
standard. The inch-pound units given in parentheses are for
D1708 Test Method forTensile Properties of Plastics by Use
information only.
of Microtensile Specimens
1.3 This standard does not purport to address all of the
E96/E96M Test Methods for Water Vapor Transmission of
safety concerns, if any, associated with its use. It is the Materials
responsibility of the user of this standard to establish appro-
E308 PracticeforComputingtheColorsofObjectsbyUsing
priate safety and health practices and determine the applica- the CIE System
bility of regulatory limitations prior to use.
2.2 TAPPI Standard:
4
Test Method T 451-CM-484 Flexural Properties of Paper
2. Referenced Documents
2.3 Federal Standards:
2
2.1 ASTM Standards:
FED STD 191 Method 5204 Stiffness of Cloth, Directional;
D149 Test Method for Dielectric Breakdown Voltage and
5
Self Weighted Cantilever Method
DielectricStrengthofSolidElectricalInsulatingMaterials
FED STD 191 Method 5206 Stiffness of Cloth Drape and
at Commercial Power Frequencies
5
Flex; Cantilever Bending Method
D150 Test Methods forAC Loss Characteristics and Permit-
tivity (Dielectric Constant) of Solid Electrical Insulation
3. Summary of Practice
D257 Test Methods for DC Resistance or Conductance of
Insulating Materials 3.1 The procedure described in this practice consists of
selection of suitable specimens for determination of pertinent
D495 Test Method for High-Voltage, Low-Current, DryArc
Resistance of Solid Electrical Insulation (Withdrawn properties, inoculation of the specimens with suitable
3
organisms, exposure of inoculated specimens under conditions
2013)
D618 Practice for Conditioning Plastics for Testing favorable to growth, examination and rating for visual growth,
and removal of the specimens and observations for testing,
D638 Test Method for Tensile Properties of Plastics
either before cleaning or after cleaning and reconditioning.
NOTE 1—Since the procedure involves handling and working with
1
This practice is under the jurisdiction ofASTM Committee G03 on Weathering
fungi, it is recommended that personnel trained in microbiology perform
and Durability and is the direct responsibility of Subcommittee G03.04 on
the portion of the procedure involving handling of organisms and
Biological Deterioration.
inoculated specimens.
Current edition approved Nov. 1, 2013. Published December 2013. Originally
approved in 1961. Last previous edition approved in 2009 as G21 – 09. DOI:
10.1520/G0021-13.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from TechnicalAssociation of the Pulp and Paper Industry (TAPPI),
Standards volume information, refer to the standard’s Document Summary page on 15 Technology Parkway South, Norcross, GA 30092, http://www.tappi.org.
5
the ASTM website. Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
3
The last approved version of this historical standard is referenced on Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
www.astm.org. dodssp.daps.dla.mil.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
G21−13
4. Significance and Use 5.1.2 For 75 mm (3 in.) and larger specimens, such as
tensile and stiffness strips, large Petri dishes, trays of borosili-
4.1 The synthetic polymer portion of these materials is
categlass,orbakingdishesupto400by500mm(16by20in.)
usually fungus-resistant in that it does not serve as a carbon
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: G21 − 09 G21 − 13
Standard Practice for
Determining Resistance of Synthetic Polymeric Materials to
1
Fungi
This standard is issued under the fixed designation G21; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This practice covers determination of the effect of fungi on the properties of synthetic polymeric materials in the form of
molded and fabricated articles, tubes, rods, sheets, and film materials. Changes in optical, mechanical, and electrical properties may
be determined by the applicable ASTM methods.
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for
information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D149 Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at
Commercial Power Frequencies
D150 Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
D257 Test Methods for DC Resistance or Conductance of Insulating Materials
3
D495 Test Method for High-Voltage, Low-Current, Dry Arc Resistance of Solid Electrical Insulation (Withdrawn 2013)
D618 Practice for Conditioning Plastics for Testing
D638 Test Method for Tensile Properties of Plastics
D747 Test Method for Apparent Bending Modulus of Plastics by Means of a Cantilever Beam
D785 Test Method for Rockwell Hardness of Plastics and Electrical Insulating Materials
D882 Test Method for Tensile Properties of Thin Plastic Sheeting
D1003 Test Method for Haze and Luminous Transmittance of Transparent Plastics
D1708 Test Method for Tensile Properties of Plastics by Use of Microtensile Specimens
E96/E96M Test Methods for Water Vapor Transmission of Materials
E308 Practice for Computing the Colors of Objects by Using the CIE System
2.2 TAPPI Standard:
4
Test Method T 451-CM-484 Flexural Properties of Paper
2.3 Federal Standards:
5
FED STD 191 Method 5204 Stiffness of Cloth, Directional; Self Weighted Cantilever Method
5
FED STD 191 Method 5206 Stiffness of Cloth Drape and Flex; Cantilever Bending Method
1
This practice is under the jurisdiction of ASTM Committee G03 on Weathering and Durability and is the direct responsibility of Subcommittee G03.04 on Biological
Deterioration.
Current edition approved Dec. 1, 2009Nov. 1, 2013. Published March 2010December 2013. Originally approved in 1961. Last previous edition approved in 20022009 as
G21 – 96 (2002).G21 – 09. DOI: 10.1520/G0021-09.10.1520/G0021-13.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
4
Available from Technical Association of the Pulp and Paper Industry (TAPPI), 15 Technology Parkway South, Norcross, GA 30092, http://www.tappi.org.
5
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://dodssp.daps.dla.mil.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
G21 − 13
3. Summary of Practice
3.1 The procedure described in this practice consists of selection of suitable specimens for determination of pertinent properties,
inoculation of the specimens with suitable organisms, exposure of inoculated specimens under conditions favorable to growth,
examination and rating for visual growth, and removal of the specimens and observations for testing, either before cleaning or after
cleaning and reconditioning.
NOTE 1—Since the procedure involves handling and working with fungi, it is recommended that personnel trained in microbiology perform the portion
of the p
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

ASTM
ASTM G22-23(Practice)
Standard Practice for Determining Resistance of Plastics to Bacteria

SIGNIFICANCE AND USE
4.1 The resin portion of plastic materials is usually resistant to bacteria, in that it does not serve as a carbon source for the growth of bacteria. It is generally the other components, such as plasticizers, lubricants, stabilizers, and colorants that are responsible for bacterial attack on plastic materials. It is important to establish the resistance of plastics to microbial attack when plastics are used under conditions of high temperature and humidity favorable for such attack.  
4.2 The effects to be expected are:  
4.2.1 Surface attack, discoloration, and loss of transmission (optical).  
4.2.2 Removal of susceptible plasticizers, modifiers, and lubricants, resulting in increased modulus (stiffness), changes in weight, dimensions, and other physical properties, and deterioration of electrical properties such as insulation resistance, dielectric constant, power factor, and dielectric strength.  
4.3 Often the changes in electrical properties are due principally to surface growth and associated moisture, and to pH changes caused by products of bacterial metabolism. Other effects include preferential growths caused by nonuniform dispersion of plasticizers, lubricants, and other processing additives. Pronounced physical changes may be observed on products in film form or as coatings where the ratio of surface to volume is high, and where nutrient materials such as plasticizers and lubricants continue to diffuse to the surface as they are utilized by the organisms.  
4.4 Since attack by organisms involves a large element of change due to local accelerations and inhibitions, the order of reproducibility may be rather low. To assure that estimates of behavior are not too optimistic, the greatest observed degree of deterioration should be reported.  
4.5 Conditioning of specimens such as exposure to leaching, weathering, heat treatment, etc., may have significant effects on the resistance of plastics to bacteria. Determination of these effects is not covered i...
SCOPE
1.1 This practice covers two procedures, A and B, for determining the effect of bacteria on the properties of plastics in the form of molded and fabricated articles, tubes, rods, sheets, and film materials. Procedure B provides a more extensive contact between the test bacteria and the specimens than does Procedure A. Changes in optical, mechanical, and electrical properties may be determined by the applicable ASTM methods.  
1.2 The values stated in SI units are to be regarded as the standard.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    3 pages
    English language
    sale 15% off
ASTM
ASTM G21-15(2021)e1(Practice)
Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi

SIGNIFICANCE AND USE
4.1 The synthetic polymer portion of these materials is usually fungus-resistant in that it does not serve as a carbon source for the growth of fungi. It is generally the other components, such as plasticizers, cellulosics, lubricants, stabilizers, and colorants, that are responsible for fungus attack on plastic materials. To assess materials other than plastics, use of this test method should be agreed upon by all parties involved. It is important to establish the resistance to microbial attack under conditions favorable for such attack, namely, a temperature of 2 to 38 °C (35 to 100 °F) and a relative humidity of 60 to 100 %.  
4.2 The effects to be expected are as follows:  
4.2.1 Surface attack, discoloration, loss of transmission (optical), and  
4.2.2 Removal of susceptible plasticizers, modifiers, and lubricants, resulting in increased modulus (stiffness), changes in weight, dimensions, and other physical properties, and deterioration of electrical properties such as insulation resistance, dielectric constant, power factor, and dielectric strength.  
4.3 Often the changes in electrical properties are due principally to surface growth and its associated moisture and to pH changes caused by excreted metabolic products. Other effects include preferential growth caused by nonuniform dispersion of plasticizers, lubricants, and other processing additives. Attack on these materials often leaves ionized conducting paths. Pronounced physical changes are observed on products in film form or as coatings, where the ratio of surface to volume is high, and where nutrient materials such as plasticizers and lubricants continue to diffuse to the surface as they are utilized by the organisms.  
4.4 Since attack by organisms involves a large element of chance due to local accelerations and inhibitions, the order of reproducibility may be rather low. To ensure that estimates of behavior are not too optimistic, the greatest observed degree of deterioration should be reported...
SCOPE
1.1 This practice covers determination of the effect of fungi on the properties of synthetic polymeric materials in the form of molded and fabricated articles, tubes, rods, sheets, and film materials. Changes in optical, mechanical, and electrical properties may be determined by the applicable ASTM methods.  
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    6 pages
    English language
    sale 15% off
ASTM
ASTM E2092-23(Test Method)
Standard Test Method for Distortion Temperature in Three-Point Bending by Thermomechanical Analysis

SIGNIFICANCE AND USE
5.1 Data obtained by this test method shall not be used to predict the behavior of materials at elevated temperatures except in applications in which the conditions of time, temperature, method of loading, and stress are similar to those specified in the test.  
5.2 This standard is particularly suited for quality control and development work. The data are not intended for use in design or predicting endurance at elevated temperatures.
SCOPE
1.1 This test method describes the determination of the temperature at which the specific modulus of a test specimen is realized by deflection in three-point bending. This temperature is identified as the distortion temperature. The distortion temperature is that temperature at which a test specimen of defined geometry deforms to a level of strain under applied stress of 0.455 MPa (66 psi) (Method A) and 1.82 MPa (264 psi) (Method B) equivalent to those used in Test Method D648. The test is applicable over the range of temperature from ambient to 300 °C.
Note 1: This test method is intended to provide results similar to those of Test Method D648 but is performed on a thermomechanical analyzer using a smaller test specimen. Equivalence of results to those obtained by Test Method D648 has been demonstrated on a limited number of materials. The results of this test method shall be considered to be independent and unrelated to those of Test Method D648 unless the user demonstrates equivalence.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    6 pages
    English language
    sale 15% off
  • Standard
    6 pages
    English language
    sale 15% off
ASTM
ASTM D3763-23(Test Method)
Standard Test Method for High Speed Puncture Properties of Plastics Using Load and Displacement Sensors

SIGNIFICANCE AND USE
4.1 This test method is designed to provide load versus deformation response of plastics under essentially multi-axial deformation conditions at impact velocities. This test method further provides a measure of the rate sensitivity of the material to impact.  
4.2 Multi-axial impact response, while partly dependent on thickness, does not necessarily have a linear correlation with specimen thickness. Therefore, results must be compared only for specimens of essentially the same thickness, unless specific responses versus thickness formulae have been established for the material.  
4.3 For many materials, there are cases where a specification that requires the use of this test method, but with some procedural modifications that take precedence when adhering to the specification. Therefore, it is advisable to refer to that material specification before using this test method. Table 1 of Classification System D4000 lists the ASTM materials standards that currently exist.
SCOPE
1.1 This test method covers the determination of puncture properties of rigid plastics over a range of test velocities.  
1.2 Test data obtained by this test method are relevant and appropriate for use in engineering design.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 1: This standard and ISO 6603-2 address the same subject matter, but differ in technical content. The technical content and results shall not be compared between the two test methods.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    11 pages
    English language
    sale 15% off
  • Standard
    11 pages
    English language
    sale 15% off
ASTM
ASTM D883-23(Terminology)
Standard Terminology Relating to Plastics

SCOPE
1.1 This terminology covers definitions of technical terms used in the plastics industry. Terms that are generally understood or adequately defined in other readily available sources are not included.  
1.2 When a term is used in an ASTM document for which Committee D20 is responsible it is included only when judged, after review, by Subcommittee D20.92 to be a generally usable term.  
1.3 Definitions that are identical to those published by another standards body are identified with the abbreviation of the name of the organization; for example, IUPAC is the International Union of Pure and Applied Chemistry.  
1.4 A definition is a single sentence with additional information included in discussion notes.
Note 1: It is recommended that definitions be reviewed periodically.  
1.4.1 When a new definition is added to this terminology standard, or the wording of a definition is revised, the date of the change shall be appended to the new or revised definition.  
1.5 For literature related to plastics terminology, see Appendix X1.  
1.6 Subsections 1.6.1 – 1.6.5 contain references to specific terminology standards that are relevant to specific plastic products or applications. In case of conflict between a definition contained in Terminology D883 and one contained in another standard, the definition given in Terminology D883 shall prevail.  
1.6.1 For terms related to thermal insulation, the applicable definitions are contained in Terminology C168.  
1.6.2 For terms related to electrical or electronic insulating materials, the applicable definitions are contained in Terminology D1711.  
1.6.3 For terms relating to fire, the applicable definitions are contained in Terminology E176 and ISO 13943. In case of conflict between Terminology E176 and ISO 13943, the definitions given in Terminology E176 shall prevail.  
1.6.4 For terms relating to precision and bias and associated issues, the applicable definitions are contained in Terminology E456.  
1.6.5 For terms related to plastic piping systems, the applicable definitions are contained in Terminology F412.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    18 pages
    English language
    sale 15% off
  • Standard
    18 pages
    English language
    sale 15% off
ASTM
ASTM D5675-13(2023)(Classification)
Standard Classification for Low Molecular Weight PTFE and FEP Micronized Powders

ABSTRACT
This classification system provides a method of adequately identifying PTFE micropowders using a system consistent with that also of another specific classification. These powders are sometimes known as lubricant powders which usually have a much smaller particle size than those used for molding or extrusion. The test methods and properties included are those required to identify and specify the various types of fluoropolymer micropowders. This classification covers two groups of fluoropolymer micropowders. Fluoropolymer micropowders are classified into groups according to their base fluoropolymer. These groups are further subdivided into classes and grades. Different tests shall be performed in order to determine the following properties of the micropowders: melting characteristics, melt flow rate, specific gravity, water content, particle size, surface area, and bulk density.
SCOPE
1.1 This classification system provides a method of adequately identifying low molecular weight polytetrafluoroethylene (PTFE) and fluorinated ethylene propylene (FEP) micronized powders using a system consistent with that of Classification System D4000. It further provides a means for specifying these materials by the use of a simple line callout designation. This classification covers fluoropolymer micronized powders that are used as lubricants and as additives to other materials in order to improve lubricity or to control other characteristics of the base material.  
1.2 These powders are sometimes known as lubricant powders. The powders usually have a much smaller particle size than those used for molding or extrusion, and they generally are not processed alone. The test methods and properties included are those required to identify and specify the various types of fluoropolymer micronized powders. Recycled fluoropolymer materials meeting the detailed requirements of this classification are included (see Guide D7209).  
1.3 These fluoropolymer micronized powders and the materials designated as filler powders (F) in ISO 12086-1 and ISO 12086-2 are equivalent.2  
1.4 The values stated in SI units as detailed in IEEE/ASTM SI-10 are to be regarded as the standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in 7.1.2.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    4 pages
    English language
    sale 15% off
ASTM
ASTM D1203-23(Test Method)
Standard Test Methods for Volatile Loss from Plastics Using Activated Carbon Methods

SIGNIFICANCE AND USE
4.1 The test methods are intended to be rapid empirical tests which have been found to be useful in the relative comparison of materials having the same nominal thickness.
Note 2: When the plastic material contains plasticizer, loss from the plastic is assumed to be primarily plasticizer. The effect of moisture is considered to be negligible.  
4.2 Correlation with ultimate application for various plastic materials shall be determined by the user.
SCOPE
1.1 These test methods cover the determination of volatile loss from a plastic material under defined conditions of time and temperature, using activated carbon as the immersion medium.  
1.2 Two test methods are covered as follows:  
1.2.1 Test Method A, Direct Contact with Activated Carbon—In this test method the plastic material is in direct contact with the carbon. This test method is particularly useful in the rapid comparison of a large number of plastic specimens.  
1.2.2 Test Method B, Wire Cage—This test method prescribes the use of a wire cage, which prevents direct contact between the plastic material and the carbon. By eliminating the direct contact, the migration of the volatile components to the surrounding carbon is minimized and loss by volatilization is more specifically measured.  
1.3 The values stated in SI units are to be regarded as the standard.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 1: This standard and ISO 176 address the same subject matter, but differ in technical content.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    4 pages
    English language
    sale 15% off
  • Standard
    4 pages
    English language
    sale 15% off
ASTM
ASTM D5024-23(Test Method)
Standard Test Method for Plastics: Dynamic Mechanical Properties: In Compression

SIGNIFICANCE AND USE
5.1 This test method provides a simple means of characterizing the thermomechanical behavior of plastic compositions using very small amounts of material. The data obtained can be used for quality control and/or research and development purposes. For some classes of materials, such as thermosets, it can also be used to establish optimum processing conditions.  
5.2 Dynamic mechanical testing provides a sensitive method for determining thermomechanical characteristics by measuring the elastic and loss moduli as a function of frequency, temperature, or time. Plots of moduli and tan delta of a material versus these variables provide graphical representation indicative of functional properties, effectiveness of cure (thermosetting resin system), and damping behavior under specified conditions.  
5.2.1 Observed data are specific to experimental conditions. Reporting in full (as described in this test method) the conditions under which the data was obtained is essential to assist users with interpreting the data an reconciling apparent or perceived discrepancies.  
5.3 This test method can be used to assess:  
5.3.1 Modulus as a function of temperature,  
5.3.2 Modulus as a function of frequency,  
5.3.3 The effects of processing treatment, including orientation,  
5.3.4 Relative resin behavioral properties, including cure and damping,  
5.3.5 The effects of substrate types and orientation (fabrication) on elastic modulus,  
5.3.6 The effects of formulation additives which might affect processability or performance,  
5.3.7 The effects of annealing on modulus and glass transition temperature,  
5.3.8 The effect of aspect ratio on the modulus of fiber reinforcements, and  
5.3.9 The effect of fillers, additives on modulus and glass transition temperature.  
5.4 Before proceeding with this test method, make reference to the specification of the material being tested. Any test specimen preparation, conditioning, dimensions, or testing parameters, or combination...
SCOPE
1.1 This test method outlines the use of dynamic mechanical instrumentation for determining and reporting the viscoelastic properties of thermoplastic and thermosetting resins as well as composite systems in the form of cylindrical specimens molded directly or cut from sheets, plates, or molded shapes. The compression data generated is used to identify the thermomechanical properties of a plastics material or composition using a variety of dynamic mechanical instruments.  
1.2 This test method is intended to provide a means for determining the thermomechanical properties (as a function of a number of viscoelastic variables) for a wide variety of plastic materials using nonresonant, forced-vibration techniques as outlined in Practice D4065. Plots of the elastic (storage) modulus, loss (viscous) modulus, complex modulus, and tan delta as a function of frequency, time, or temperature are indicative of significant transitions in the thermomechanical performance of the polymeric material system.  
1.3 This test method is valid for a wide range of frequencies, typically from 0.01 to 100 Hz.  
1.4 Due to possible instrumentation compliance, the data generated are intended to indicate relative and not necessarily absolute property values.  
1.5 Test data obtained by this test method are relevant and appropriate for use in engineering design.  
1.6 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 1: There is no known ISO equivalent to this standard.  
1.8 This international standard was developed in accordance with internationally recognized pr...

  • Standard
    4 pages
    English language
    sale 15% off
  • Standard
    4 pages
    English language
    sale 15% off
ASTM
ASTM F2617-15(2023)(Test Method)
Standard Test Method for Identification and Quantification of Chromium, Bromine, Cadmium, Mercury, and Lead in Polymeric Material Using Energy Dispersive X-ray Spectrometry

SIGNIFICANCE AND USE
5.1 This test method is intended for the determination of chromium, bromine, cadmium, mercury, and lead, in homogeneous polymeric materials. The test method may be used to ascertain the conformance of the product under test to manufacturing specifications. Typical time for a measurement is 5 to 10 min per specimen, depending on the specimen matrix and the capabilities of the EDXRF spectrometer.
SCOPE
1.1 This test method describes an energy dispersive X-ray fluorescence (EDXRF) spectrometric procedure for identification and quantification of chromium, bromine, cadmium, mercury, and lead in polymeric materials.  
1.2 This test method is not applicable to determine total concentrations of polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE) or hexavalent chromium. This test method cannot be used to determine the valence states of atoms or ions.  
1.3 This test method is applicable for a range from 20 mg/kg to approximately 1 wt % for chromium, bromine, cadmium, mercury, and lead in polymeric materials.  
1.4 This test method is applicable for homogeneous polymeric material.  
1.5 The values stated in SI units are to be regarded as the standard. Values given in parentheses are for information only.  
1.6 This test method is not applicable to quantitative determinations for specimens with one or more surface coatings present on the analyzed surface; however, qualitative information may be obtained. In addition, specimens less than infinitely thick for the measured X rays, must not be coated on the reverse side or mounted on a substrate.  
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    12 pages
    English language
    sale 15% off
ASTM
ASTM D5023-23(Test Method)
Standard Test Method for Plastics: Dynamic Mechanical Properties: In Flexure (Three-Point Bending)

SIGNIFICANCE AND USE
5.1 This test method provides a simple means of characterizing the thermomechanical behavior of plastic compositions using very small amounts of material. The data obtained is used for quality control, research and development as well as the establishment of optimum processing conditions.  
5.2 Dynamic mechanical testing provides a sensitive means for determining thermomechanical characteristics by measuring the elastic and loss moduli as a function of frequency, temperature, or time. Plots of moduli and tan delta of a material versus these variables can be used to provide a graphical representation indicative of functional properties, effectiveness of cure (thermosetting resin system), and damping behavior under specified conditions.  
5.2.1 Observed data are specific to experimental conditions. Reporting in full (as described in this test method) the conditions under which the data was obtained is essential to assist users with interpreting the data an reconciling apparent or perceived discrepancies.  
5.3 This test method can be used to assess:  
5.3.1 Modulus as a function of temperature,  
5.3.2 Modulus as a function of frequency,  
5.3.3 The effects of processing treatment,  
5.3.4 Relative resin behavioral properties, including cure and damping.  
5.3.5 The effects of substrate types and orientation (fabrication) on modulus,  
5.3.6 The effects of formulation additives which might affect processability or performance,  
5.3.7 The effects of annealing on modulus and glass transition temperature,  
5.3.8 The effect of aspect ratio on the modulus of fiber reinforcements, and  
5.3.9 The effect of fillers, additives on modulus and glass transition temperature.  
5.4 Before proceeding with this test method, refer to the specification of the material being tested. Any test specimen preparation, conditioning, dimensions, or testing parameters, or combination thereof, covered in the relevant ASTM materials specification shall take precedence over those m...
SCOPE
1.1 This test method outlines the use of dynamic mechanical instrumentation for determining and reporting the visco-elastic properties of thermoplastic and thermosetting resins and composite systems in the form of rectangular bars molded directly or cut from sheets, plates, or molded shapes. The data generated, using three-point bending techniques, is used to identify the thermomechanical properties of a plastic material or compositions using a variety of dynamic mechanical instruments.  
1.2 This test method is intended to provide means for determining the viscoelastic properties of a wide variety of plastics materials using nonresonant, forced-vibration techniques in accordance with Practice D4065. Plots of the elastic (storage) modulus; loss (viscous) modulus; complex modulus and tan delta as a function of frequency, time, or temperature are indicative of significant transitions in the thermomechanical performance of polymeric material systems.  
1.3 This test method is valid for a wide range of frequencies, typically from 0.01 Hz to 100 Hz.  
1.4 Due to possible instrumentation compliance, the data generated are intended to indicate relative and not necessarily absolute property values.  
1.5 Test data obtained by this test method are relevant and appropriate for use in engineering design.  
1.6 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 1: This test method is equivalent to ISO 6721, Part 5.  
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established ...

  • Standard
    4 pages
    English language
    sale 15% off
  • Standard
    4 pages
    English language
    sale 15% off