ASTM_D_8366_-_21a.pdf

Designation:D836621aStandard Specification forExtruded and Compression Molded Shapes Made fromUnfilled Poly(Vinylidene Fluoride)PVDF1This standard is issued under the fixed designation D8366;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()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 specification covers the requirements and testmethods for the material,dimensions,workmanship,and theproperties of extruded sheet,rod and tubular bar manufacturedfrom unfilled PVDF.1.2 This specification covers the requirements and testmethods for the material,dimensions,workmanship,and theproperties of extruded and compression molded shapes manu-factured from unfilled PVDF.1.3 The properties included in this specification are thoserequired for shapes made from PVDF polymers.Requirementsnecessary to identify particular characteristics of the shape areincluded in Section 5.1.4 This specification allows for the use of up to 20%process regrind and reprocessed plastic,total,and of uncon-taminated quality.1.5 The values stated in English Units are to be regarded asthe standard in all property and dimensional tables.Forreference purposes,SI units are also included.1.6 The following safety hazards caveat pertains only to thetest method or test methods described in 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,health,andenvironmental practices and determine the applicability ofregulatory limitations prior to use.1.7 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D256 Test Methods for Determining the Izod PendulumImpact Resistance of PlasticsD618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating Materi-alsD792 Test Methods for Density and Specific Gravity(Rela-tive Density)of Plastics by DisplacementD883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD3222 Specification for Unmodified Poly(Vinylidene Fluo-ride)(PVDF)Molding Extrusion and Coating MaterialsD3418 Test Method for Transition Temperatures and En-thalpies of Fusion and Crystallization of Polymers byDifferential Scanning CalorimetryD3835 Test Method for Determination of Properties ofPolymeric Materials by Means of a Capillary RheometerD3892 Practice for Packaging/Packing of PlasticsD4000 Classification System for Specifying Plastic Materi-alsD5575 Classification System for Copolymers of VinylideneFluoride(VDF)with Other Fluorinated Monomers3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this specification andassociated with plastics issues refer to the terminology con-tained in Terminology D883.3.2 Definitions of Terms Specific to This Standard:3.2.1 copolymer,na polymer made by the reaction of twoor more different monomers with units of more than one kind.1This test method is under the jurisdiction of ASTM Committee D20 on Plasticsand is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materi-als.Current edition approved Oct.1,2021.Published October 2021.Originallyapproved in 2021.Last previous edition approved in 2021 as D8366-21.DOI:10.1520/D8366-21A.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.13.2.2 homopolymer,na polymeric molecule in which onetype of chemical repeat unit or monomer is repeated manytimes to produce the final macromolecule.3.2.3 polyvinylidene fluoride(PVDF),na semi-crystallinepolymer made from the repeating monomer of C2H2F2.3.2.4 regrind(plastic),na product or scrap such as sprues,runners,sheet,rod and mel