1、Designation:D322218aStandard Specification forUnmodified Poly(Vinylidene Fluoride)(PVDF)MoldingExtrusion and Coating Materials1This standard is issued under the fixed designation D3222;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,
2、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
3、 melt processable molding andextrusion materials,as well as coating materials of poly(vi-nylidene fluoride)fluoroplastic,commonly abbreviated PVDF(or PVF2in scientific literature).This specification coversthermoplastic resin materials supplied in pellet or powderform.1.2 This specification applies o
4、nly to the virgin homopoly-mer prepared from vinylidene fluoride,not copolymers,reinforced,filled grades or special grades with additives ortreatments for modification of attributes.1.3 The tests involved are intended to provide informationfor specification of unmodified PVDF homopolymer resins.Itis
5、 not the purpose of this specification to provide engineeringdata for design purposes.1.4 PVDF fluoroplastics melt between 156 and 180C(312and 356F)and are thermally stable up to about 370C(698F).(WarningEvolution of corrosive and toxic hydrogen fluo-ride can occur under certain conditions.)1.5 The
6、values stated in SI units,as detailed in IEEE/ASTMS-10,are to be regarded as the standard.The values given inparentheses are for information only.NOTE1PVDF exhibits polymorphism.2The type and extent ofcrystalline structure varies with the thermomechanical history of thesample.Specimens prepared by t
7、echniques different than prescribed inthis specification can have properties that vary from the values specified.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safet
8、y,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.Specific precautionary statements are given in Section 10.NOTE2There is no equivalent ISO standard for this specification.Information in this specification is technically equivalent to relate
9、dinformation in ISO 12086-1 and ISO 12086-2.1.7 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 Wo
10、rld Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:3D149 Test Method for Dielectric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD150 Test Methods for AC Loss Characteristics and
11、Permit-tivity(Dielectric Constant)of Solid Electrical InsulationD256 Test Methods for Determining the Izod PendulumImpact Resistance of PlasticsD257 Test Methods for DC Resistance or Conductance ofInsulating MaterialsD542 Test Method for Index of Refraction of TransparentOrganic PlasticsD618 Practic
12、e 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 Displacem
13、entD883 Terminology Relating to PlasticsD1238 Test Method for Melt Flow Rates of Thermoplasticsby Extrusion PlastometerD2863 Test Method for Measuring the Minimum OxygenConcentration to Support Candle-Like Combustion ofPlastics(Oxygen Index)1This specification is under the jurisdiction of ASTM Commi
14、ttee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved Aug.1,2018.Published August 2018.Originallyapproved in 1973.Last previous edition approved in 2018 as D3222-18.DOI:10.1520/D3222-18A.2Lovinger,A.J.,“Poly(Vinylidene Fluoride
15、)”Developments in CrystallinePolymers,Vol 1,Chapter 5,D.C.Bassett,Ed.,Applied Science,London,1982.3For 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
16、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 T