1、9009276 O024833 453 W Designation:D 2146-82 4 C T t AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race St.,Philadelphia,Pa.19103 Reprinted from the Annual Book of ASTM Standards,Copyright ASTM If not listed in the current combined index,will appear in the next edition.Standard Specification for PR
2、OPYLENE PLASTIC MOLDING AND EXTRUSION MATERIALS This standard is issued under the fixed designation D 2 146;the number immediately following the designation indicates the year of original adoption or,in the casx of revision,the year of last revision.A number in parentheses indicates the year of last
3、 reapproval.A superscripl epsilon(E)indicates an editorial change since the last revision or reapproval.1.scope 1.1 This specification covers requirements for propylene molding and extrusion materials compounded with or without the addition of modifiers,colorants,stabilizers,or lubricants.It provide
4、s for their identification in such a manner that the seiler and the purchaser can agree on the substantial similarity of different commercial lots or shipments.It is not the function of this specification to provide engi-neering or design data.NOTE I-The properties included i n this specifi-cation a
5、re those required to identify the types of molding and extrusion material covered.There may be other requirements necessary to identify particular characteristics.These will be added to the s cifica-tion as their inclusion becomes enerally&rable and the necessary test data ant methods became availab
6、le.2.Applicable Documents 2.1 ASTM Standardr:D 256 Tests for Impact Resistance of Plastics D 257 Tests for D-C Resistance or Conduct-D 6 18 Conditioning Plastics and Electrical D 621 Tests for Deformation of Plastics Un-D 638 Test for Tensile Properties of Plastics4 D 759 Recommended Practice for Co
7、nduct-ing Physical Property Tests of Plastics at Subnormal and Supernormal Tempera-t u r e D 792 Tests for Specific Gravity and Density of Plastics by Displacement4 D 1238 Test for Flow Rates of Ther-moplastics by Extrusion Plastometer and Electrical Insulating Materials ance of Insulating Materials
8、 Insulating Materials for Testing3 der Load D 1505 Test for Density of Plastics by the Density-Gradient Technique D 153 1 Test for Dielectric Constant and Dis-sipation Factor of Polyethylene by Liquid Displacement Procedure5 D 1897 Recommended Practice for Injection Molding Test Specimens of Thermop
9、lastic Molding and Extrusion Materials D 1898 Recommended Practice for Sampling of Plastics D 3892 Practice for Packaging/Packmg of Plastics4 2.2 Military Standard MIL-STD-105 Sampling Procedures and Ta-bles for Inspection by Attributes 3.Classification 3.1 Types-This specification covers two types
10、of propylene molding and extrusion ma-terials,classified according to basic composi-tion:3.1.1 Type I-Polypropylene,characterized by its rigidity and resistance to deformation under load(9 15 kg/m3 density,maximum,based on uncolored,unfilled plastic).3.1.2 Type II-Propylene copolymers and propylene-
11、elastomer compounds,characterized This specification is under the jurisdiction of ASTM Committee D-20 on Plastics and is the direct responsibility of Subcommittee D20.12 on Olefin Plastics.Cumnt edition approved July 30,1982.Published S e p tember 1982.Originally published as D 2146-63 T.Last previo
12、us edition D 2146-80.Annual Book o f ASTM Standards,Paris 35,38,and 39.Annual Book ofASTM Standards,Parts 22,35,and 39.Annuai Book o f ASTM Sandar&,Parts 39 and 40,Available from Naval Publications and Forms Center,Annual Book of ASTM Siandards,Pari 35.5801 Tabor Ave.,Philadelphia,Pa.19120.NOTICE:Th
13、is standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.900927b 0024832 39T H by improved resistance to impact,especially at low temperatures(9 15 kg/m3 density,maxi-mum,based on uncolored,unfuled plastic
14、).3.2 Grades-Each of the types is subdivided into grades according to physical properties.The specification provides a system for char-acterization and identification,which enables coverage for all commercially available grades having properties within the range of the pos-sible combinations that ma
15、y be selected from Table 1.A grade is designated by the cell numbers for each property in the order in which they are listed in Table 1.When a prop-erty is not specified,a?o?is entered as the cell number.3.3 Classes-Each of the types and grades may be further subdivided into classes accord-ing to sp
16、ecial requirements.A class is desig-nated by the letter corresponding to the require-ments detailed in Table 2.Where no special requirements in addition to type and grade properties are needed,no class designation is shown.3.4 Identity of a specific material is made by a code designation indicating type,grade,and class designations in sequence,with dashes be-tween the type and first property designations,and between the last property and class desig-nation.NOTE 2-An example of this classificatio
