1、Designation:D747119Standard Specification forCPT-Fluoropolymer Molding and Extrusion Materials1This standard is issued under the fixed designation D7471;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A numb
2、er in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 Thisspecificationcoverscopolymersofchlorotrifluoroethylene,perfluoroalkoxy,and tetrafluoroethyl-ene and are suitable for extrusion,compression
3、,and injectionmolding.1.2 This specification does not cover blended materials anddoes not cover recycled materials.1.3 The values stated in SI units as detailed in IEEE/ASTMSI-10 are to be regarded as the standard.The values given inparentheses are for information only.1.4 The following safety hazar
4、ds caveat pertains only to thetest method portion,Section 11,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,health,andenvironmental practices
5、 and determine the applicability ofregulatory limitations prior to use.NOTE1Although this classification system and ISO 20568-1 andISO 20568-2 differ in approach or detail,data obtained using either aretechnically equivalent.1.5 This international standard was developed in accor-dance with internati
6、onally 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:2D618 Practice
7、 for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD792 Test Methods for Density and Specific Gravity(Rela-tive Density)of Plastics by DisplacementD883 Terminology Relating to PlasticsD1238 Test Method for Melt Flow Rates of Thermoplasticsby Extrusion Plastomete
8、rD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD3418 Test Method for Transition Temperatures and En-thalpies of Fusion and Crystallization of Polymers byDifferential Scanning CalorimetryD3892 Practice for Packaging/Packing of PlasticsE177 Practice for Use of the Terms Precision and Bia
9、s inASTM Test MethodsIEEE/ASTM SI-10 Use of the International System of Units(SI):The Modem Metric System2.2 ISO Standards:3ISO 20568-1 PlasticsFluoropolymer Dispersion andMoulding and Extrusion MaterialsPart 1:Designationand Basis for SpecificationISO 20568-2 PlasticsFluoropolymer Dispersion andMou
10、lding and Extrusion MaterialsPart 2:Preparation ofTest Specimens and Determination of Properties3.Terminology3.1 GeneralThe terminology given in Terminology D883is applicable to this specification.3.2 Definitions:3.2.1 lot,none production run or a uniform blend of twoor more production runs.3.3 Gene
11、ralThe abbreviated terms given in TerminologyD1600 are applicable to this specification.4.Classification4.1 This specification covers one type of fluoropolymersupplied in pellet form classified according to their meltingpoint.The resins of each type are divided into four gradesaccording to their mel
12、t flow rate.1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved May 1,2019.Published June 2019.Originallyapproved in 2009.Last previous edition approved in 2014 as D7
13、471 09(2014).DOI:10.1520/D7471-19.2For 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.3Available from American Nationa
14、l Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*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 develo
15、ped 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.1 4.2 An one-line system
16、 shall be used to specify materialscovered by this specification.The system uses predefined cellsto refer to specific aspects of this specification,as illustrated asfollows:Specification _Standard Number:Type:Grade:SpecialBlock:Notes:,:Example:Specification D7471-09,I2For this example,the line callout shall be,SpecificationD7471 09,I2 and shall specify a fluoropolymer that has all ofthe properties listed for that type and grade in the appropriatespecified properties,or tables,or both,in the spec
