1、Designation: D 5538 07Standard Practice forThermoplastic ElastomersTerminology and Abbreviations1This standard is issued under the fixed designation D 5538; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、 A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.INTRODUCTIONDuring the past two decades the use of special rubber-like polymers, designated as thermoplasticelastomers, has increased both in v
3、olume and in commercial importance. The number of uniquepolymers classified as thermoplastic elastomers that have been brought to commercial acceptance hasalso grown. (As explained below, these types of rubber-like polymers cannot be accommodated by thesystematic nomenclature approach of the existin
4、g Practice D 1418.)Practice D 1418 was initially published in 1956 with a systematic nomenclature procedure based onthe chemical structure of the polymer.An attempt to incorporate the new thermoplastic elastomers intothe nomenclature scheme of Practice D 1418 produces two serious problems: (1) the a
5、bbreviations andacronyms are not the same as the well established abbreviations and acronyms used for the newthermoplastic elastomers by the various producers of these polymers, and (2) the attempt generates avery cumbersome terminology system. Therefore it is necessary to depart from the systematic
6、approach of Practice D 1418.To avoid the confusion of attempting to revise Practice D 1418 and have conflicting nomenclatureand abbreviation designation procedures in the same practice, this new practice devoted exclusivelyto thermoplastic elastomers is being published.1. Scope1.1 This practice cove
7、rs a uniform, consensus nomenclatureapproach for thermoplastic elastomers. This compilation isintended to accommodate and supplement any existing tradenames and trademarks.1.2 No attempt is made to develop an exclusively systematicprocess for nomenclature and abbreviations.1.3 In technical papers an
8、d other technical or trade literaturethe full name of the thermoplastic elastomer should be given atits first appearance in the document along with its abbreviationin parentheses. In all subsequent references to the thermoplas-tic elastomer, the abbreviation may be given.2. Referenced Documents2.1 A
9、STM Standards:2D 1418 Practice for Rubber and Rubber LaticesNomenclatureD 1566 Terminology Relating to Rubber2.2 ISO Standards:3ISO 1382 RubberVocabularyISO 18064 Thermoplastic ElastomersNomenclature andAbbreviated Terms2.3 Other standards not specifically referenced in thisdocument are important fo
10、r a full appreciation of the use ofthermoplastic elastomer abbreviations and terminology. Theyare listed in an appendix to this practice.PART ATERMINOLOGY3. Terminology Definitions3.1 TPE (thermoplastic elastomer)the acronym or abbre-viation, TPE, occupies a special place as a generic abbreviationte
11、rm for all of the thermoplastic elastomers currently in use.3.1.1 DiscussionAlthough the definitions given in 3.2, 3.3and 3.4 also appear in Terminology D 1566, they are also givenhere for completeness of information in this practice.3.2 thermoplastic elastomer (TPE)a diverse family ofrubber-like ma
12、terials that, unlike conventional rubbers, can beprocessed and recycled like thermoplastic materials. (SeeISO 1382 and ISO 18064.)1This practice is under the jurisdiction of ASTM Committee D11 on Rubber andis the direct responsibility of Subcommittee D11.08 on Terminology.Current edition approved Ma
13、y 1, 2007. Published June 2007. Originallyapproved in 1994. Last previous edition approved in 2002 as D 5538 02.2For 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
14、standards Document Summary page onthe ASTM website.3Available from International Organization for Standardization (ISO), 1 rue deVaremb, Case postale 56, CH-1211, Geneva 20, Switzerland, http:/www.iso.ch.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2
15、959, United States.3.3 thermoplastic vulcanizate (TPV)a thermoplastic elas-tomer with a chemically crosslinked rubbery phase, producedby dynamic vulcanization. (See ISO 1382 and ISO 18064.)3.4 dynamic vulcanizationthe process of intimate meltmixing a thermoplastic polymer with a suitable reactiverub
16、bery polymer to generate a thermoplastic elastomer withchemically crosslinked rubbery phase, resulting in propertiescloser to those of a thermoset rubber when compared to thesame uncrosslinked composition. (See ISO 1382 andISO 18064.)3.5 Other Term:3.5.1 alloya unique composition of two or more poly
17、mersthat has one or more of the polymers treated or processed in aspecial way to confer enhanced performance characteristics onthe resulting material.PART BABBREVIATIONS4. Abbreviated Designationshighly crosslinked thermoplastic vulcanizate (HCTPV)thermoplastic elastomer, polyether block amide (PEBA
18、)styrene butadiene styrene block copolymer (SBS)styrene ethylene/butylene styrene block copolymer (SEBS)styrene ethylene/propylene styrene block copolymer (SEPS)styrene isoprene styrene block copolymer (SIS)thermoplastic elastomer, chlorinated ethylenealloy (TECEA)thermoplastic elastomer, etherester
19、 (TEEE)thermoplastic elastomer, styrenic (TES)thermoplastic polyurethane (TPU)thermoplastic vulcanizate (TPV)dynamic vulcanization (DV)5. Keywords5.1 dynamic vulcanization; thermoplastic elastomer; ther-moplastic vulcanizateAPPENDIX(Nonmandatory Information)X1. IMPORTANT STANDARDS FOR POTENTIAL REFE
20、RENCE FOR TPE NOMENCLATUREASTM Standards:D 883 Terminology Relating to PlasticsD 1600 Terminology of Abbreviated Terms Relating toPlasticsD 4000 Classification System for Specifying Plastic Materi-alsD 4474 Specification for Styrenic Thermoplastic ElastomerInjection Molding and Extrusion Materials (
21、TES)D 4550 Specification for Thermoplastic Elastomer-Ether-Ester (TEEE)D 5021 Specification for Thermoplastic ElastomerChlorinated Ethylene Alloy (TECEA)D 6338 Standard Classification System for HighlyCrosslinked Thermoplastic Vulcanizates (HCTPVs)D 6835 Classification System for Thermoplastic Elast
22、omer-Ether-Ester Molding and Extrusion Materials (TEEE)ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent
23、rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either
24、for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hear
25、ing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D5538072
