1、Designation: D5538 13 (Reapproved 2018)Standard Practice forThermoplastic ElastomersTerminology and Abbreviations1This standard is issued under the fixed designation D5538; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year o
2、f last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () 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 incr
3、eased both in volume 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
4、 of the existing Practice D1418.)Practice D1418 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 D1418 produces two serious problem
5、s: (1) the abbreviations 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 th
6、e systematicapproach of Practice D1418.To avoid the confusion of attempting to revise Practice D1418 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 pra
7、ctice covers 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
8、 papers and 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.1.4 This internati
9、onal 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 World Trade Organization TechnicalBarriers to Trade (TBT) Commi
10、ttee.2. Referenced Documents2.1 ASTM Standards:2D1418 Practice for Rubber and Rubber LaticesNomenclatureD1566 Terminology Relating to Rubber2.2 ISO Standards:3ISO 1382 RubberVocabularyISO 18064 Thermoplastic ElastomersNomenclature andAbbreviated Terms2.3 Other standards not specifically referenced i
11、n this docu-ment are important for a full appreciation of the use ofthermoplastic elastomer abbreviations and terminology. Theyare listed in an appendix to this practice.PART ATERMINOLOGY3. Terminology Definitions3.1 Definitions:1This practice is under the jurisdiction of ASTM Committee D11 on Rubbe
12、r andRubber-like Materials and is the direct responsibility of Subcommittee D11.08 onTerminology.Current edition approved June 1, 2018. Published August 2018. Originallyapproved in 1994. Last previous edition approved in 2013 as D5538 13. DOI:10.1520/D5538-13R18.2For referenced ASTM standards, visit
13、 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 International Organization for Standardization (ISO), 1 rue deVaremb, Case postale
14、 56, CH-1211, Geneva 20, Switzerland, http:/www.iso.ch.Copyright 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
15、 the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.13.1.1 TPE (thermoplastic elastomer)the acronym orabbreviation, TPE, occupies a special place as a genericabbreviat
16、ion term for all of the thermoplastic elastomerscurrently in use.3.1.1.1 DiscussionAlthough the definitions given in 3.1.2,3.1.3 and 3.1.4 also appear in Terminology D1566, they arealso given here for completeness of information in thispractice.3.1.2 thermoplastic elastomer (TPE)a diverse family ofr
17、ubber-like materials that, unlike conventional rubbers, can beprocessed and recycled like thermoplastic materials. (See ISO1382 and ISO 18064.)3.1.2.1 DiscussionThe great majority of commercialTPEs are block copolymers.3.1.3 thermoplastic vulcanizate (TPV)a thermoplasticelastomer with a chemically c
18、rosslinked rubbery phase, pro-duced by dynamic vulcanization. (See ISO 1382 and ISO18064.)3.1.4 dynamic vulcanizationthe process of intimate meltmixing a thermoplastic polymer with a suitable reactiverubbery polymer to generate a thermoplastic elastomer withchemically crosslinked rubbery phase, resu
19、lting in propertiescloser to those of a thermoset rubber when compared to thesame uncrosslinked composition. (See ISO 1382 and ISO18064.)3.2 Other Term:3.2.1 alloya unique composition of two or more polymersthat has one or more of the polymers treated or processed in aspecial way to confer enhanced
20、performance characteristics onthe resulting material.PART BABBREVIATIONS3.3 Abbreviated Designations:3.3.1 block copolymer(BCP)3.3.2 dynamic vulcanization(DV)3.3.3 highly crosslinked thermoplastic vulcanizate(HCTPV)3.3.4 styrene butadiene styrene block copolymer(SBS)3.3.5 styrene ethylene/butylene s
21、tyrene block copolymer(SEBS)3.3.6 styrene ethylene/propylene styrene block copolymer(SEPS)3.3.7 styrene isoprene styrene block copolymer(SIS)3.3.8 thermoplastic elastomer(TPE)3.3.9 thermoplastic elastomer, chlorinated ethylene alloy(TECEA)3.3.10 thermoplastic elastomer, etherester(TEEE)3.3.11 thermo
22、plastic elastomer, polyether block amide(PEBA)3.3.12 thermoplastic elastomer, styrenic(TES)3.3.13 thermoplastic polyurethane(TPU)3.3.14 thermoplastic vulcanizate(TPV)4. Keywords4.1 dynamic vulcanization; thermoplastic elastomer; ther-moplastic vulcanizateAPPENDIX(Nonmandatory Information)X1. IMPORTA
23、NT STANDARDS FOR POTENTIAL REFERENCE FOR TPE NOMENCLATUREASTM Standards:D883 Terminology Relating to PlasticsD1566 Standard Terminology Relating to RubberD1600 Terminology of Abbreviated Terms Relating toPlasticsD4000 Classification System for Specifying Plastic Materi-alsD4474 Specification for Sty
24、renic Thermoplastic ElastomerInjection Molding and Extrusion Materials (TES)D4550 Specification for Thermoplastic Elastomer-Ether-Ester (TEEE)D5021 Specification for Thermoplastic ElastomerChlorinated Ethylene Alloy (TECEA)D6338 Standard Classification System for Highly Cross-linked Thermoplastic Vu
25、lcanizates (HCTPVs)D6835 Classification System for Thermoplastic Elastomer-Ether-Ester Molding and Extrusion Materials (TEEE)D5538 13 (2018)2ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this
26、 standard are expressly advised that determination of the validity of any such patent 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 year
27、s andif not revised, either reapproved or withdrawn. Your comments are invited either 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 committ
28、ee, which you may attend. If you feel that your comments have not received a fair hearing 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
29、-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). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 13 (2018)3
