1、Designation:D567513Standard Classification forLow Molecular Weight PTFE and FEP Micronized Powders1This standard is issued under the fixed designation D5675;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A
2、number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This classification system provides a method of ad-equately identifying low molecular weight polytetrafluoroeth-ylene(PTFE)and fluorinated
3、 ethylene propylene(FEP)mi-cronized powders using a system consistent with that ofClassification System D4000.It further provides a means forspecifying these materials by the use of a simple line calloutdesignation.This classification covers fluoropolymer micron-ized powders that are used as lubrica
4、nts and as additives toother materials in order to improve lubricity or to control othercharacteristics of the base material.1.2 These powders are sometimes known as lubricant pow-ders.The powders usually have a much smaller particle sizethan those used for molding or extrusion,and they generallyare
5、 not processed alone.The test methods and propertiesincluded are those required to identify and specify the varioustypes of fluoropolymer micronized powders.Recycled fluo-ropolymer materials meeting the detailed requirements of thisclassification are included(see Guide D7209).1.3 These fluoropolymer
6、 micronized powders and the ma-terials designated as filler powders(F)in ISO 12086-1 andISO 12086-2 are equivalent.21.4 The values stated in SI units as detailed in IEEE/ASTMSI-10 are to be regarded as the standard.1.5 This standard does not purport to address all of thesafety concerns,if any,associ
7、ated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.Specific precau-tionary statements are given in 7.1.2.2.Referenced Documents2.1 ASTM Standards:3D854 Te
8、st Methods for Specific Gravity of Soil Solids byWater PycnometerD883 Terminology Relating to PlasticsD1238 Test Method for Melt Flow Rates of Thermoplasticsby Extrusion PlastometerD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD3892 Practice for Packaging/Packing of PlasticsD4000 Class
9、ification System for Specifying Plastic Materi-alsD4464 Test Method for Particle Size Distribution of Cata-lytic Material by Laser Light ScatteringD4567 Test Method for Single-Point Determination of Spe-cific SurfaceArea of Catalysts and Catalyst Carriers UsingNitrogen Adsorption by Continuous Flow
10、MethodD4591 Test Method for Determining Temperatures andHeats of Transitions of Fluoropolymers by DifferentialScanning CalorimetryD4895 Specification for Polytetrafluoroethylene(PTFE)Resin Produced From DispersionD7209 Guide for Waste Reduction,Resource Recovery,andUse of Recycled Polymeric Material
11、s and ProductsD5740 Guide for Writing Material Standards in the Classi-fication FormatIEEE/ASTM SI-10 Standard for Use of the InternationalSystem of Units(SI):The Modern Metric System2.2 ISO Standards:4ISO 12086-1 Plastics-FluoropolymerDispersionsandMoulding and Extrusion Materials Part 1:Designatio
12、n andSystem and Basis for SpecificationISO 12086-2 Plastics-FluoropolymerDispersionsand1This classification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved Sept.1,2013.Published Sept
13、ember 2013.Originallyapproved 1995.Last previous edition approved 2010 as D5675-04(2010).DOI:10.1520/D5675-13.2Designations,specifications,and test methods are included in ISO 12086-1 and12086-2.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at ser
14、viceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4Available from American National 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 o
15、f this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Moulding and Extrusion Materials Part 2:Preparation ofTest Specimens and Determination of Properties3.Terminology3.1 DefinitionsThe terminology given in TerminologyD883 is app
16、licable to this classification unless otherwisespecified.3.1.1 bulk density,nthe mass per unit volume,in gramsper litre of a loosely packed material,such as a moldingpowder.D48953.1.2 lot,none production run or uniform blend of two ormore production runs.D48953.2 Definitions of Terms Specific to This Standard:3.2.1 direct polymerization powder,nfluoropolymer ma-terial based on polymerizations designed to produce lowmolecular weight PTFE resins with properties of materialsdescribed in this standa
