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ASTM D2581-02

(Specification)

Standard Specification for Polybutylene (PB) Plastics Molding and Extrusion Materials

Standard Specification for Polybutylene (PB) Plastics Molding and Extrusion Materials

ABSTRACT
This classification system covers polybutylene plastics materials suitable for molding and extrusion that allows the material to be recycled. This system recognizes that polybutylene plastics are identified on the basis of two characteristics which are density and flow rate. The former is the criterion for assignment as to type of material which are Type I, Type II, and Type II that is colored and filled. The latter for designation as to categories and classes which are class A for general purpose and dielectric and is unpigmented, Class B also for general purpose and dielectric in black and white and Class C which is weather resistant, color black and containing not less than a certain percentage of carbon black.. The properties in this classification system shall be determined in accordance to test methods specified regarding its density, flow rate, tensile properties and carbon black content. Tensile properties include tensile strength, yield strength, and elongation at break.
SCOPE
1.1 This classification system covers polybutylene plastics materials suitable for molding and extrusion.
1.2 This classification system allows for the use of those polybutylene plastic materials that can be recycled, reconstituted, and reground, provided the following conditions are met:
1.2.1 The requirements as stated in this classification system and other guideline pertaining to these materials are met, and
1.2.2 The material has not been modified in any way to alter its conformance to water contact regulations or other similar requirements.
1.3 The proportions of recycled, reconstituted, and regrind material used, as well as the nature and the amount of any contaminant, cannot be practically covered in this classification system. It is the responsibility of the supplier and buyer of recycled, reconstituted, and regrind materials to ensure compliance.
1.4 The properties included in this classification system are those required to characterize and classify the specific product. Other properties may be necessary to identify particular characteristics important to specialized applications. These may be specified by using suffixes as given in Section 5. Properties shall be selected in such a manner that consistency of different lots or shipments is assured. The tests involved in this classification system are intended to provide information for identifying materials in accordance with types and categories. It is not the function of this classification system to provide specific engineering data for design purposes.
1.5 This classification system and subsequent line callout (specification) are intended to provide a means of calling out plastic materials used in the fabrication of end items or parts. It is not intended for the selection of materials. Material selection should be made by those having expertise in the plastic field after careful consideration of the design and the performance required of the part, the environment to which it will be exposed, the fabrication process to be employed, the costs involved, and the inherent properties of the material other than those covered by this standard.
1.6 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
Note 1—ISO 8986 Parts 1 and 2 resemble this standard in title, but their content is significantly different.
1.7 The following precautionary caveat pertains only to the test methods portion, Section 11, of this classification system: 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
09-Aug-2002
ICS
83.140.99 - Other rubber and plastics products
Technical Committee
D20 - Plastics
Drafting Committee
D20.15 - Thermoplastic Materials
Current Stage
Ref Project

Relations

Replaces
ASTM D2581-01 - Standard Specification for Polybutylene (PB) Plastics Molding and Extrusion Materials
Effective Date
10-Aug-2002
Replaced By
ASTM D2581-09 - Standard Specification for Polybutylene (PB) Plastics Molding and Extrusion Materials (Withdrawn 2018)
Effective Date
01-Aug-2009

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ASTM D2581-02 - Standard Specification for Polybutylene (PB) Plastics Molding and Extrusion MaterialsASTM D2581-02 - Standard Specification for Polybutylene (PB) Plastics Molding and Extrusion Materials
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ASTM D2581-02 - Standard Specification for Polybutylene (PB) Plastics Molding and Extrusion Materials
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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: D 2581 – 02
Standard Classification System for
1
Polybutylene (PB) Plastics Molding and Extrusion Materials
This standard is issued under the fixed designation D 2581; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope* 1.6 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
1.1 This classification system covers polybutylene plastics
only.
materials suitable for molding and extrusion.
1.2 This classification system allows for the use of those
NOTE 1—ISO 8986 Parts 1 and 2 resemble this standard in title, but
polybutylene plastic materials that can be recycled, reconsti- their content is significantly different.
tuted,andreground,providedthefollowingconditionsaremet:
1.7 The following precautionary caveat pertains only to the
1.2.1 Therequirementsasstatedinthisclassificationsystem
test methods portion, Section 11, of this classification system:
and other guideline pertaining to these materials are met, and
This standard does not purport to address all of the safety
1.2.2 The material has not been modified in any way to alter
concerns, if any, associated with its use. It is the responsibility
its conformance to water contact regulations or other similar
of the user of this standard to establish appropriate safety and
requirements.
health practices and determine the applicability of regulatory
1.3 The proportions of recycled, reconstituted, and regrind
limitations prior to use.
material used, as well as the nature and the amount of any
contaminant,cannotbepracticallycoveredinthisclassification
2. Referenced Documents
2
system. It is the responsibility of the supplier and buyer of
2.1 ASTM Standards:
recycled, reconstituted, and regrind materials to ensure com-
D 618 Practice for Conditioning Plastics for Testing
pliance.
D 638 Test Method for Tensile Properties of Plastics
1.4 The properties included in this classification system are
D 792 TestMethodsforDensityandSpecificGravity(Rela-
those required to characterize and classify the specific product.
tive Density) of Plastics by Displacement
Other properties may be necessary to identify particular
D 883 Terminology Relating to Plastics
characteristics important to specialized applications. These
D 1238 TestMethodforMeltFlowRatesofThermoplastics
may be specified by using suffixes as given in Section 5.
by Extrusion Plastometer
Properties shall be selected in such a manner that consistency
D 1505 Test Method for Density of Plastics by the Density-
of different lots or shipments is assured. The tests involved in
Gradient Technique
this classification system are intended to provide information
D 1600 Terminology for Abbreviated Terms Relating to
for identifying materials in accordance with types and catego-
Plastics
ries. It is not the function of this classification system to
D 1603 Test Method for Carbon Black in Olefin Plastics
provide specific engineering data for design purposes.
D 3892 Practice for Packaging/Packing of Plastics
1.5 This classification system and subsequent line callout
D 4000 Classification System for Specifying Plastic Mate-
(specification) are intended to provide a means of calling out
rials
plastic materials used in the fabrication of end items or parts.
D 5033 Guide for Development of ASTM Standards Relat-
It is not intended for the selection of materials. Material
ing to Recycling and Use of Recycled Plastics
selection should be made by those having expertise in the
E29 Practice for Using Significant Digits in Test Data to
plastic field after careful consideration of the design and the
Determine Conformance with Specifications
performance required of the part, the environment to which it
E 105 Practice for Probability Sampling of Materials
will be exposed, the fabrication process to be employed, the
F 699 Practice for Accelerated Conditioning of Polybuty-
costsinvolved,andtheinherentpropertiesofthematerialother
lene Pipe and Tubing for Subsequent Quality Control
than those covered by this standard.
Testing
1 2
ThisclassificationsystemisunderthejurisdictionofASTMCommitteeD20on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Plastics and is the direct responsibility of Subcommittee D20.12 on Olefin Plastics. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved August 10, 2002. Published October 2002. Originally Standards volume information, refer to the standard’s Document Summary page on
published as D 2581 – 67. Last previous edition D 2581 – 01. the ASTM website.
*A Summary of Changes section appea
...

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SCOPE
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SCOPE
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SCOPE
1.1 This classification system covers requirements for plasticized cellulose acetate propionate thermoplastic compounds suitable for injection molding and extrusion. These compounds have a propionyl content less than 48 % and an acetyl content less than 3 % and can contain dyes and pigments. Cellulosic plastic materials, being thermoplastic, are reprocessable and recyclable. This classification system allows for the use of those cellulosic materials, provided that all specific requirements of this classification system are met.  
1.2 The properties included in this classification system are those required to identify the compositions covered. Other requirements necessary to identify particular characteristics important to specialized applications are specified by using the suffixes as given in Section 5.  
1.3 This classification system and subsequent line call out specification are intended to provide a means of calling out plastic materials used in the fabrication of end items or parts. It is not intended for the selection of materials. Material selection can be made by those having expertise in the plastic field only after careful consideration of the design and performance required of the part, environment to which it will be exposed, fabrication process to be employed, costs involved, and inherent properties of the material other than those covered by this classification system.  
1.4 The values stated in SI units are to be regarded as standard.  
1.5 The following safety hazards caveat pertains only to the test method portion, Section 11, of this classification system. 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.  
1.6 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.

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ASTM
ASTM D3294-22(Specification)
Standard Specification for Polytetrafluoroethylene (PTFE) Resin Molded Sheet and Molded Basic Shapes

ABSTRACT
This specification establishes the requirements and test methods for the material, dimensions, and workmanship, and the physical and electrical properties of molded sheet manufactured from polytetrafluoroethylene (PTFE) resin molding materials and molded basic shapes made from resin molding and extrusion materials. The sheet or molded basic shape shall be made from unpigmented PTFE and shall be free from foreign matters. Each of the samples shall undergo visual and dimensional inspection to verify their compliance with the standard requirements. The specimens shall conform to the following physical and electrical property requirements: tensile strength; elongation; dielectric strength; specific gravity; porosity; and melting point. Examination for internal defects shall also be conducted to ensure that the specimens are free from microscopic cracks, voids, inclusions, and other surface defects that might affect the serviceability of the materials.
SCOPE
1.1 This specification establishes requirements and methods of test for the material, dimensions, and workmanship, and the physical and electrical properties of molded sheet in minimum thicknesses of 0.794 mm (1/32 in.) manufactured from PTFE resin molding materials defined in Specification D4894.  
1.2 This specification also establishes requirements for molded basic shapes made from molding materials. This specification is for products 300 mm (12 in.) or less in a dimension parallel to and 12.7 mm (0.5 in.) or greater in the dimension perpendicular to the direction of the applied molding pressure.  
1.3 The values stated in SI units are to be regarded as the standard.  
1.4 The following precautionary caveat pertains only to the test method portion, Section 7, of this specification. 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. Special attention is called to 13.2, 13.3, 13.6, 13.8, and A1.  
Note 1: There is no known ISO equivalent to this standard.  
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.

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  • Technical specification
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