1、Designation:D 5021 00Standard Specification forThermoplastic ElastomerChlorinated Ethylene Alloy(TECEA)1This standard is issued under the fixed designation D 5021;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revis
2、ion.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.INTRODUCTIONThis specification is intended to be a means of calling out materials used in the fabrication of enditems or parts.It is not intend
3、ed for the selection of materials.Material selection should be made bythose having expertise in the plastics field after careful consideration of the design and theperformance required of the part,the environment to which it will be exposed,the fabrication processto be employed,the inherent properti
4、es of the materials other than those covered by this specification,and the economics.1.Scope*1.1 This specification covers alloys of chlorinated ethyleneelastomers suitable for injection molding,extrusion,blowmolding,thermoforming,and other plastics processing meth-ods.1.2 This specification allows
5、for the use of those TECEAmaterials that can be recycled,regrounded,and reprocessed,provided that the requirements as stated in this specification aremet.The proportions of recycled material used,as well as thenature and amount of any contaminant,however,cannot becovered practically in this specific
6、ation.1.3 The properties included in this specification are thoserequired to identify the compositions covered.There may beother requirements necessary to identify particular character-istics important to specialized application.These shall beagreed upon between the user and the supplier,by using th
7、esuffixes given in Section 5.1.4 The values stated in SI units are to be regarded as thestandard.The practices,as detailed in Practice IEEE/ASTM SI10,are incorporated herein.1.5 The following precautionary caveat pertains only to thetest methods portion,Section 10,of this specification:Thisstandard
8、does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.NOTE1There is no similar or equivalen
9、t ISO standard.2.Referenced Documents2.1 ASTM Standards:D 412 Test Methods for Vulcanized Rubber and Thermo-plastic ElastomersTension2D 618 Practice for Conditioning Plastics for Testing3D 883 Terminology Relating to Plastics3D 2240 Test Method for Rubber PropertyDurometerHardness2D 3641 Practice fo
10、r Injection Molding Test Specimens ofThermoplastic Molding and Extrusion Materials4D 3892 Practice for Packaging/Packing of Plastics4D 4000 Classification System for Specifying Plastic Mate-rials4E 29 Practice for Using Significant Digits in Test Data toDetermine Conformance With Specifications5IEEE
11、/ASTM SI 10 Standard for Use of the InternationalSystem of Units(SI):The Modern Metric System63.Terminology3.1 DefinitionsFor definitions of technical terms pertain-ing to plastics used in this specification,see TerminologyD 883.4.Classification4.1 Alloys of chlorinated ethylene elastomers are class
12、ifiedinto groups according to processing method.These groups aresubdivided into classes by hardness and are further subdividedinto grades by purpose as shown in the basic property table(Table TECEA).1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct resp
13、onsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved Nov.10,2000.Published February 2001.Originallypublished as D 5021 89.Last previous edition D 5021 95.2Annual Book of ASTM Standards,Vol 09.01.3Annual Book of ASTM Standards,Vol 08.01.4Annual Book of ASTM Standards,V
14、ol 08.02.5Annual Book of ASTM Standards,Vol 14.02.6Annual Book of ASTM Standards,Vol 14.04.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.NOTE2An example of this classific
15、ation system is as follows;thedesignation TECEA 112 would indicate:TECEA=thermoplastic elastomerchlorinated ethylene alloy,1(group)=extrusion grade,1(class)=low hardness,and2(grade)=general purposeneutral.4.1.1 To facilitate the incorporation of future or specialmaterials not covered by the basic pr
16、operty table,the“other/unspecified category(0)for group,class,and grade is shownin Table TECEA.The basic properties can be obtained fromTable A.4.2 Specific requirements shall be shown by a six-characterdesignation.The designation will consist of the letterAand thefive digits comprising the cell numbers for the propertyrequirements in the order as they appear in Table A.4.2.1 Although the values listed are necessary to include therange of properties available in existing materials,users shouldno
