1、Designation: D1418 17Standard Practice forRubber and Rubber LaticesNomenclature1This standard is issued under the fixed designation D1418; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in paren
2、theses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.INTRODUCTIONThe system of designating rubbers and rubber latices in this pra
3、ctice was developed in 1955 toreplace designations GR-A, GR-I, GR-M, GR-S and GR-T (standing for “Government Rubber”:A-acrylontrile, I-isobutylene, S-styrene, M-monochlorobutadiene and T-thiosulfide), used for syn-thetic rubbers made in government owned plants. The system was designed to be a generi
4、cclassification of the rubber polymers that would accommodate both existing and future rubbers. Thechemical composition of the polymer chain was selected as the best classification proposal to achievethis goal. The rubber polymers were divided into eight classes as described in Section 3 of thisprac
5、tice. The letter symbol for the class was given last in the designation for the rubber. Preceding theclass symbol were letter symbols to designate either the monomers used to prepare the polymer or thesubstituent groups on the polymer chain. The system has been successful both in accommodating thema
6、ny new polymers developed since 1955 and in conveying to the user certain characteristics of therubber associated with the chemical composition.1. Scope1.1 This practice covers a system of general classificationfor the basic rubbers both in dry and latex forms determinedfrom the chemical composition
7、 of the polymer chain.1.2 The purpose of this practice is to provide a standardiza-tion of terms for use in industry, commerce, and governmentand is not intended to conflict with but rather to act as asupplement to existing trade names and trademarks.1.3 In technical papers or presentations the name
8、 of thepolymer should be used if possible. The symbols can followthe chemical name for use in later references.NOTE 1For terms related to thermoplastic elastomers, see PracticeD5538.2. Referenced Documents2.1 ASTM Standards:2D5538 Practice for Thermoplastic ElastomersTerminology and Abbreviations3.
9、Rubbers3.1 Rubbers in both dry and latex form shall be classifiedand coded from the chemical composition of the polymer chainin the following manner:MRubbers having a saturated chain of the polymethylenetype.NRubbers having nitrogen, but not oxygen or phosphorus,in the polymer chain.ORubbers having
10、oxygen in the polymer chain.RRubbers having an unsaturated carbon chain, forexample, natural rubber and synthetic rubbers derived at leastpartly from diolefins.QRubbers having silicon and oxygen in the polymerchain.TRubbers having sulfur in the polymer chain.URubbers having carbon, oxygen, and nitro
11、gen in thepolymer chain.ZRubbers having phosphorus and nitrogen in the polymerchain.4. Class Designations4.1 The “M” class includes rubbers having a saturated chainof the polymethylene type. The following classification shallbe used:ACMCopolymers of ethyl or other acrylate and a smallamount of monom
12、er which facilitates vulcanization.1This practice is under the jurisdiction of ASTM Committee D11 on Rubber andRubber-like Materials and is the direct responsibility of Subcommittee D11.08 onTerminology.Current edition approved Jan. 1, 2017. Published January 2017. Originallyapproved in 1956. Last p
13、revious edition approved in 2016 as D1418 10a (2016).DOI: 10.1520/D1418-17.2For 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
14、 ASTM website.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 the Decision on Principles for theDevelo
15、pment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1AEMCopolymers of ethyl or other acrylates and ethylene.ANMCopolymers of ethyl or other acrylate and acryloni-trile.BIMSMBrominated polymers derived from a
16、copolymerof isobutylene and p-methylstyrene.CMChloro-polyethylene.CFMPolychloro-trifluoro-ethylene.CSMChloro-sulfonyl-polyethylene.EOMCopolymers of ethylene and an octene.EPDMTerpolymer of ethylene, propylene, and a dienewith the residual unsaturated portion of the diene in the sidechain.EPMCopolyme
17、rs of ethylene and propylene.EVMCopolymers of ethylene and vinyl acetate.FEPMA fluoro rubber of the polymethylene type onlycontaining one or more of the monomeric alkyl, perfluoroalkyl,and/or perfluoroalkoxy groups, with or without a cure sitemonomer (having a reactive pendant group).FFKMPerfluorina
18、ted rubbers of the polymethylene typehaving all fluoro, perfluoroalkyl, or perfluoroalkoxy substituentgroups on the polymer chain; a small fraction of these groupsmay contain functionality to facilitate vulcanization.FKMFluoro rubber of the polymethylene type that utilizesvinylidene fluoride as a co
19、monomer and has substituent fluoro,alkyl, perfluoroalkyl or perfluoroalkoxy groups on the polymerchain, with or without a cure site monomer (having a reactivependant group).Type 1Dipolymer of hexafluoropropylene and vinylidenefluoride.Type 2Terpolymer of tetrafluoroethylene, vinylidenefluoride, and
20、hexafluoropropylene.Type 3Terpolymer of tetrafluoroethylene, a fluorinatedvinyl ether, and vinylidene fluoride.Type 4Terpolymer of tetrafluoroethylene, propylene andvinylidene fluoride.Type 5Pentapolymer of tetrafluoroethylene,hexafluoropropylene, vinylidene fluoride, ethylene, and a fluo-rinated vi
21、nyl ether.Type 6Copolymer of vinylidene fluoride and 2,3,3,3-tetrafluoropropene.IMPolyisobutylene (not curable).4.2 The “O” class includes rubbers having oxygen in thepolymer chain. The following classification shall be used:COPolychloromethyl oxirane (epichlorohydrin polymer).ECOEthylene oxide (oxi
22、rane) and chloromethyl oxirane(epichlorohydrin copolymer).GECOEpichlorohydrin-ethylene oxide-allylglycidyletherterpolymer.GPOPolypropylene oxide and allyl glycidyl ether.4.3 The “R” class shall be defined by inserting the name ofthe monomer or monomers before the word “rubber” fromwhich it was prepa
23、red (except for natural rubber). The letterimmediately preceding the letter R shall signify the diolefinfrom which the rubber was prepared (except for naturalrubber). Any letter or letters preceding this diolefin lettersignifies the comonomer or comonomers. A parenthetical letter(S), for solution, o
24、r (E), for emulsion, is used to indicatewhether the rubber or latex was prepared by solution oremulsion polymerization. The following classification shall beused for rubbers of the “R” class:ABRAcrylate-butadiene.BIIRBromo-isobutene-isoprene.BRButadiene.CIIRChloro-isobutene-isoprene.CRChloroprene.EN
25、REpoxidized natural rubber.ENR-GEpoxidized guayule natural rubber.HNBRHydrogenated acrylonitrile-butadiene.IIRIsobutene-isoprene.IRIsoprene, synthetic.NBRAcrylonitrile-butadiene.NIRAcrylonitrile-isoprene.NRNatural rubber.NR-GGuayule natural rubber.PBRVinylpyridine-butadiene.PSBRVinylpyridine-styrene
26、-butadiene.SBRStyrene-butadiene.SIRStyrene-isoprene rubbers.4.3.1 Rubbers of the “R” class having substitute carboxylicacid (COOH) groups on the polymer chain shall be identifiedby the prefix “X”:XBRCarboxylic-butadiene rubber.XSBRCarboxylic-styrene-butadiene.XNBRCarboxylic-acrylonitrile-butadiene.N
27、OTE 2When designating latex or latices the terminology shall be, forexample, “SBR latex” or “SBR latices.”4.4 The “Q” class shall be defined by inserting the name ofthe substituent group on the polymer chain prior to the siliconedesignation. The following classification shall be used formembers of t
28、he “Q” class.(The M preceding the Q indicates that methyl is one of thesubstituent groups on the polymer chain.)FMQSilicone rubber having both methyl and fluorinesubstituent groups on the polymer chain.FVMQSilicone rubber having fluorine, vinyl, and methylsubstitute groups on the polymer chain.PMQSi
29、licone rubbers having both methyl and phenylsubstituent groups on the polymer chain.PVMQSilicone rubbers having methyl, phenyl, and vinylsubstituent groups on the polymer chain.MQSilicone rubbers having only methyl substituentgroups on the polymer chain, such as dimethyl polysiloxane.VMQSilicone rub
30、ber having both methyl and vinyl sub-stituent groups on the polymer chain.4.5 The “U” class includes rubbers having carbon, oxygen,and nitrogen in the polymer chain. The following classificationshall be used:AFMUTerpolymer of tetrafluoroethylene,trifluoronitrosomethane, and nitrosoperfluorobutyric a
31、cid.AUPolyester urethane.EUPolyether urethane.4.6 The “T” class includes rubbers having carbon, oxygen,and sulfur in the polymer chain. The following classificationshall be used for members of the “T” class:D1418 172OTA rubber having either a -CH2-CH2-O-CH2-O-CH2-CH2group or occasionally an -R-group
32、, where R is an aliphatichydrocarbon between the polysulfide linkages in the polymerchain.EOTA rubber having a -CH2-CH2-O-CH2-O-CH2-CH2group and R groups that are usually -CH2-CH2but occasion-ally other aliphatic groups between the polysulfide linkages inthe polymer chain.4.7 The “Z” class includes
33、rubbers having phosphorus andnitrogen in the polymer chain. The following classificationshall be used:FZA rubber having a -P|CxN- chain and having fluoro-alkoxy groups attached to the phosphorus atoms in the chain.PZA rubber having a -P|CxN- chain and having aryloxy(phenoxy and substituted phenoxy)
34、groups attached to thephosphorus atoms in the chain.4.8 Mixtures of rubbers are identified by using the classdesignations for the types of rubbers in the mixture. If thecomposition is known, the major component shall be listedfirst, for example, a blend of NR/BR in a 60:40 ratio shall bedesignated a
35、s NR/BR (60:40) or NR/BR (1.5:1) with the ratiobeing expressed parenthetically following the designation.4.8.1 If the components are present in equal amounts theyshall be designated in alphabetical order; for example, BR/NRis used for the 1:1 ratio and expressed as BR/NR (1:1).4.8.2 If the proportio
36、ns of the components are unknown,they shall be designated in alphabetical order and expressedusing hyphenation, for example, as BR-NR.5. Keywords5.1 acronyms for latices; acronyms for rubber; nomencla-tureAPPENDIXX1. HISTORICAL NOMENCLATUREX1.1 The following terms have been removed from themain body
37、 of this standard because they are obsolete and nolonger commercially available. This appendix will serve as ahistorical reference.NCRAcrylonitrile-chloropreneSCRStyrene-chloropreneASTM International takes no position respecting the validity of any patent rights asserted in connection with any item
38、mentionedin this standard. Users of this 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 commit
39、tee and must be reviewed every five years 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 mee
40、ting of theresponsible technical committee, 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,
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