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ASTM D2581-01

(Specification)

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

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

SCOPE
1.1 This specification provides for the identification of polybutylene plastics molding and extrusion materials in such manner that the manufacturer and the purchaser can agree on the acceptability of different lots or shipments. The tests involved in this specification are intended to provide information for identifying materials according to types and categories. It is not the function of this specification to provide specific engineering data for design purposes.
1.2 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 Part 1 and 2 resembles this standard in title, but the content is significantly different.
1.3 The following safety hazards caveat pertains only to the test methods portion, Section 9, 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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
09-Jun-2001
ICS
83.140.99 - Other rubber and plastics products
Technical Committee
D20 - Plastics
Current Stage
Ref Project

Relations

Replaces
ASTM D2581-96 - Standard Specification for Polybutylene (PB) Plastics Molding and Extrusion Materials
Effective Date
10-Jun-2001
Replaced By
ASTM D2581-02 - Standard Specification for Polybutylene (PB) Plastics Molding and Extrusion Materials
Effective Date
10-Aug-2002

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ASTM D2581-01 - Standard Specification for Polybutylene (PB) Plastics Molding and Extrusion MaterialsASTM D2581-01 - Standard Specification for Polybutylene (PB) Plastics Molding and Extrusion Materials
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ASTM D2581-01 - Standard Specification for Polybutylene (PB) Plastics Molding and Extrusion Materials
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Standards Content (Sample)

Designation: D 2581 – 01
Standard Specification 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.
4
1. Scope the Proper Use of Recycled Plastics
5
E 105 Practice for Probability Sampling of Materials
1.1 This specification provides for the identification of
2.2 Military Standard:
polybutylene plastics molding and extrusion materials in such
MIL-STD-105 Sampling Procedures and Tables for Inspec-
manner that the manufacturer and the purchaser can agree on
6
tion by Attributes
the acceptability of different lots or shipments. The tests
involved in this specification are intended to provide informa-
3. Terminology
tionforidentifyingmaterialsaccordingtotypesandcategories.
3.1 Definitions of Terms Specific to This Standard:
It is not the function of this specification to provide specific
3.1.1 internal recycled material—clean rework material
engineering data for design purposes.
generated from the manufacturer’s own resin production.
1.2 The values stated in SI units are to be regarded as the
3.1.2 polybutylene plastics—plastics prepared by the poly-
standard. The values given in parentheses are for information
merizationofnolessthan85 %butene-1andnolessthan95 %
only.
of total olefins by weight.
NOTE 1—ISO 8986 Part 1 and 2 resembles this standard in title, but the
content is significantly different.
4. Classification
1.3 The following safety hazards caveat pertains only to the 4.1 This specification recognizes that polybutylene plastics
test methods portion, Section 9, of this specification: This
are identified on the basis of two characteristics, that is, density
standard does not purport to address all of the safety concerns, and flow rate. The former is the criterion for assignment as to
if any, associated with its use. It is the responsibility of the user
type, the latter for designation as to category.
of this standard to establish appropriate safety and health 4.2 Types—This specification provides for two types of
practices and determine the applicability of regulatory limita-
polybutylene molding and extrusion materials in accordance
tions prior to use.
with the requirements inTable 1. Material supplied under these
types shall be of such nominal density, within the ranges given,
2. Referenced Documents
as agreed upon between the manufacturer and the purchaser
2.1 ASTM Standards:
and subject to tolerances likewise agreed upon.
D 618 Practice for Conditioning Plastics and Electrical
4.3 Categories—This specification provides for six grades
2
Insulating Materials for Testing
of polybutylene on the basis of flow rate ranges in accordance
2
D 638 Test Method for Tensile Properties of Plastics
withtherequirementsofTable2.Materialsuppliedunderthese
D 792 TestMethodsforDensityandSpecificGravity(Rela-
grades shall be of such nominal flow rate, within the ranges
2
tive Density) of Plastics by Displacement
given, as agreed upon between the manufacturer and the
D 1238 Test Method for Flow Rates of Thermoplastics by
purchaser and subject to tolerances likewise agreed upon.
2
Extrusion Plastometer
4.4 Classes—Each of the two types is subdivided into three
D 1505 Test Method for Density of Plastics by the Density-
classes, according to use and composition, as follows:
2
Gradient Technique
4.4.1 Class A—General-purpose and dielectric, unpig-
2
D 1603 Test Method for Carbon Black in Olefin Plastics
mented.
3
D 3892 Practice for Packaging/Packing of Plastics
4.4.2 Class B—General-purpose and dielectric, in colors
D 5033 GuidefortheDevelopmentofStandardsRelatingto
(including black and white).
4.4.3 Class C—Weather-resistant (black) containing not
less than 2 % carbon black.The carbon black shall be of a kind
1
This specification is under the jurisdiction of ASTM Committee D20 on
Plastics and is the direct responsibility of Subcommittee D20.12 on Olefin Plastics.
4
Current edition approved June 10, 2001. Published August 2001. Originally
Annual Book of ASTM Standards, Vol 08.03.
5
published as D 2581 – 67. Last previous edition D 2581 – 96
Annual Book of ASTM Standards, Vol 14.02.
2
6
Annual Book of ASTM Standards, Vol 08.01.
AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
3
Annual Book of ASTM Standards, Vol 08.02.
Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D 2581
TABLE 1 Classification of Polybutylene Molding and Extrusion
shipment, and may consist of a blend of two or more
Materials According to Type
production runs of material.
3 3
Type Density Range, (kg/m ) g/cm
8. Nu
...

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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.  
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SCOPE
1.1 This classification system covers polyphthalamide (PPA) materials suitable for injection molding.  
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 to be specified by using suffixes as given in Section 5.  
1.3 This classification system allows for the use of recycled materials provided that all specification requirements are met.  
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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.

  • Technical specification
    6 pages
    English language
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  • Technical specification
    6 pages
    English language
    sale 15% off