ASTM_D_729_-_95.pdf

Designation:D 729 95An American National StandardStandard Specification forVinylidene Chloride Molding Compounds1This standard is issued under the fixed designation D 729;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers thermoplastic molding com-pounds composed of a copolymer of vinyl chloride andvinylidene chloride in the approximate ratio of 10 to 90,withsuitable plasticizers,stabilizers,dyes,and pigments.The mold-ing compounds are suitable for compression,injection,orextrusion molding.1.2 The values stated in SI units are to be regarded as thestandard.NOTE1The properties included in this specification are those re-quired to identify the types of molding materials covered.There may beother requirements necessary to identify particular characteristics.Thesewill be added to the specification as their inclusion becomes generallydesirable and the necessary test data and methods become available.NOTE2There is no similar or equivalent ISO standard.1.3 The following precautionary caveat pertains only to thetest method portion,Section 8,of this specification.Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:D 149 Test Method for Dielectric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power Frequencies2D 150 Test Methods for A-C Loss Characteristics andPermittivity(Dielectric Constant)of Solid Electrical Insu-lating Materials3D 256 Test Methods for Impact Resistance of Plastics andElectrical Insulating Materials2D 257 Test Methods for D-C Resistance or Conductance ofInsulating Materials4D 374 Test Methods for Thickness of Solid Electrical Insu-lation3D 445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids(and the Calculation of DynamicViscosity)5D 568 Test Method for Rate of Burning and/or Extent andTime of Burning of Flexible Plastics in a Vertical Position2D 569 Method of Measuring the Flow Properties of Ther-moplastic Molding Materials2D 570 Test Method for Water Absorption of Plastics2D 638 Test Method for Tensile Properties of Plastics2D 648 Test Method for Deflection Temperature of PlasticsUnder Flexural Load2D 759 Recommended Practice for Conducting PhysicalProperty Tests of Plastics at Subnormal and SupernormalTemperatures6D 792 Test Methods for Specific Gravity(Relative Density)and Density of Plastics by Displacement2D 883 Terminology Relating to Plastics2D 1600 Terminology for Abbreviated Terms Relating toPlastics2D 1898 Practice for Sampling of Plastics2D 3892 Practice for Packaging/Packing of Plastics72.2Military Standard:8MIL-STD-105 Sampling Procedures and Tables for Inspec-tion by Attributes3.Terminology3.1 General:Definitions are in accordance with Terminol-ogy D 883 and Terminology D 1600,unless otherwise indi-cated.4.Type and Forms4.1 This specification covers one general-purpose type ofvinylidene chloride material in the form of powder or pellets.5.General Requirements5.1 The material shall be of uniform composition and socompounded as to conform to the requirements prescribed inthis specification.5.2 The form and color shall be as specified by the pur-chaser in the contract or order.1This specification is under the jurisdiction of ASTM Committee D-20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials(Section D20.15.01).Current edition approved Dec.10,1995.Published February 1996.Originallypublished as D 729 43 T.Last previous edition D 729 91.This edition contains changes in Section 1 to add an ISO equivalency statement.2Annual Book of ASTM Standards,Vol 08.01.3Annual Book of ASTM Standards,Vol 10.01.4Annual Book of ASTM Standards,Vol 10.02.5Annual Book of ASTM Standards,Vol 05.01.6Discontinued,see 1982 Annual Book of ASTM Standards,Vol 08.01.7Annual Book of ASTM Standards,Vol 08.02.8Available from Standardization Documents Order Desk,Bldg.4 Section D,700Robbins Ave.,Philadelphia,PA 19111-5094,Attn:NPODS.1AMERICAN SOCIETY FOR TESTING AND MATERIALS100 Barr Harbor Dr.,West Conshohocken,PA 19428Reprinted from the Annual Book of ASTM Standards.Copyright ASTMNOTICE:This standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.NOTE3Vinylidene chloride molding compounds are generally sup-plied in powder and pellet forms conforming to the following sieveanalysis:Powder:retained on a No.18not over 1%(1.00-mm)sievePellets:passing a No.4(4.75-mm)100%sieve6.Detail Requ