1、Designation:D557507(Reapproved 2013)Standard Classification System forCopolymers of Vinylidene Fluoride(VDF)with OtherFluorinated Monomers1This standard is issued under the fixed designation D5575;the number immediately following the designation indicates the year oforiginal adoption or,in the case
2、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.1.Scope*1.1 This classification system covers both developing prop-erty designations and specifications for th
3、ermoplastic compo-sitions consisting of vinylidene fluoride(VDF)polymersmodified with other fluoromonomers and property-enhancingadditives.The other fluoromonomers include one or more ofthe following:hexafluoropropylene(HFP),tetrafluoroethylene(TFE),and chlorotrifluoroethylene(CTFE).The additives ar
4、ethose that improve its flame resistance,processing,or physicalproperties.However,these additives are not normally consid-ered to be reinforcing.This classification system covers ther-moplastic compositions supplied in pellet or powder forms.1.2 A designation or specification applies only to the vir
5、ginpolymers prepared from vinylidene fluoride(50 weight%)withoneormoreofthefollowingcomonomers:hexafluoropropylene,tetrafluoroethylene,and chlorotrifluoro-ethylene.Some polymers contain additives to enhance certainproperties.1.3 This system constitutes a line callout as a means ofdesignating and spe
6、cifying properties of VDF-based copoly-mers.At least four of the designated properties are used todefine a polymers specification.Specification criteria frominternational documents can be used if their criteria matchdesignation properties currently used by this classificationsystem.2This classificat
7、ion system is not intended for theselection of materials.1.4 The manufacturer of the virgin resin shall establish thedesignation of a resin based on the property value criteria inthis classification system.1.5 The minimum specification properties are established bythis classification system.Addition
8、al specification properties,based on the designation properties cited,can be established bythe resin supplier and customer.1.6 The values stated in SI units are to be regarded asstandard.1.7 The property tests are intended to provide informationfor specifications of modified VDF-copolymer compositio
9、ns.Itis not the purpose of this classification system to provideengineering data for design purposes.NOTE1Although the values listed in Table 1,Table 2,Table 3,Table4,and Table 5 are necessary to include the range of properties available inexisting materials,they are not to be interpreted as implyin
10、g that everypossible combination of the properties exists or can be obtained.It ispossible for a user or designer,using Tables 1-5,to call out propertyrelationships that are physically impossible to occur in a copolymer madeusing current technology.NOTE2Many of these polymers exhibit polymorphism.3T
11、he type andextent of crystalline structure will vary with the thermomechanical historyof the sample.Properties vary based on the technique used to prepare thespecimens.1.8 Test methods used in this classification system can resultin the incidental production of hazardous materials.ModifiedVDF polyme
12、r fluoroplastics melt between 90 and 182C(194and 359F)and are thermally stable up to about 350C(662F),orsomewhathigher,dependingonthecomposition.(WarningEvolution of corrosive,colorless,and toxic hydro-gen fluoride can occur under certain conditions.)1.9 This standard does not purport to address all
13、 of thesafety concerns,if any,associated 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.See Warning in 1.8and Section 10 for specific hazards statements.NO
14、TE3Many,but not all of the codes and specifications found in thisclassification system are also in ISO 12086-1 and ISO 12086-2.1This classification system is under the jurisdiction ofASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Curre
15、nt edition approved Sept.1,2013.Published October 2013.Originallyapproved in 1994.Last previous edition approved in 2007 as D5575-07.This standard is needed to cover commercial products outside the scope ofSpecification D3222.DOI:10.1520/D5575-07R13.2Fluoropolymer property specification data from in
16、ternational standards caninclude properties intentionally excluded from this classification system(forexample,composition).The only property criteria from other documents that can beused are those having similar properties allowed under the designation system.3Lovinger,A.J.,“Poly(vinylidene fluoride),”Developments in CrystallinePolymers,Vol 1,Chapter 5,D.C.Bassett,Ed.,Applied Science,London,1982.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Bar
