1、Designation: D6339 11Standard Classification System for and Basis for SpecificationsforSyndiotactic Polystyrene Molding and Extrusion (SPS)1This standard is issued under the fixed designation D6339; the number immediately following the designation indicates the year oforiginal adoption or, in the ca
2、se of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This classification system covers syndiotactic polysty-rene materials including homopolym
3、er, copolymers, blends,and impact modified, suitable for molding and extrusion.Recycled product will be addressed in a separate standard.1.2 This classification system and subsequent line callout(specification) are intended to provide a means of calling outplastic materials used in fabrication of en
4、d use items or parts.It is not intended for the selection of matierials. Materialselection can be made by those having expertise in the plasticsfield only after careful consideration of the design and theperformance required of the part, the environment to which itwill be exposed, the fabrication pr
5、ocess to be employed, theinherent properties of the material other than those covered bythis classification system, and the economics.1.3 The properties included in this classification system arethose required to identify the compositions covered. Otherrequirements necessary to identify particular c
6、haracteristicsimportant to specialized applications are to be called out usingthe suffixes given in Section 5.NOTE 1There is no known ISO equivalent to this standard.2. Referenced Documents2.1 ASTM Standards:2D256 Test Methods for Determining the Izod PendulumImpact Resistance of PlasticsD618 Practi
7、ce for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD648 Test Method for Deflection Temperature of PlasticsUnder Flexural Load in the Edgewise PositionD790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating Mat
8、erialsD792 Test Methods for Density and Specific Gravity (Rela-tive Density) of Plastics by DisplacementD883 Terminology Relating to PlasticsD1238 Test Method for Melt Flow Rates of Thermoplasticsby Extrusion PlastometerD1525 Test Method for Vicat Softening Temperature ofPlasticsD1600 Terminology fo
9、r Abbreviated Terms Relating toPlasticsD3641 Practice for Injection Molding Test Specimens ofThermoplastic Molding and Extrusion MaterialsD3892 Practice for Packaging/Packing of PlasticsD4000 Classification System for Specifying Plastic Materi-alsD5630 Test Method for Ash Content in PlasticsE29 Prac
10、tice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.2 Military Standard:3MIL-STD-105 Sampling Procedure and Tables for Inspec-tion by Attributes2.3 ISO Standards:4ISO 751 and 2 Plastics: Determination of Temperature ofDeflection Under LoadISO 1791 Determinatio
11、n of Charpy Impact StrengthPart1: Non-Instrumented Impact TestISO 306 Plastics: Thermoplastic Materials-Determinationof Vicat Softening Temperature (VST)ISO 5272 Plastics: Determination of Tensile Properties-Part 2: Test Conditions for Moulding and ExtrusionPlasticsISO 1133 PlasticsDetermination of
12、the Melt Mass-FlowRate (MFR) and the Melt Volume-Flow Rate (MVR) ofThermoplasticsISO 1183-1 Plastics: Methods for Determining the Densityof Non-Cellular PlasticsPart 1: Immersion Method,Liquid Pyknometer Method and Titration MethodISO 3451-1 Plastics: Determination of Ash-Part 1 GeneralMethods1This
13、classification system is under the jurisdiction ofASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved Feb. 1, 2011. Published March 2011. Originallyapproved in 1998. Last previous edition approved in 2005 as D6339 -
14、 05. DOI:10.1520/D6339-11.2For 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 ASTM website.3Available from Standardization Doc
15、uments Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/dodssp.daps.dla.mil.4Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.1*A Summary of Changes section appears at the end of t
16、his standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3. Terminology3.1 DefinitionsThe terminology used in this classificationsystem is in accordance with Terminologies D883 and D1600.4. Classification4.1 Syndiotactic polystyre
17、ne materials are classified intogroups according to their composition. These groups aresubdivided into classes and grades as shown in the basicproperties table, Table SPS. Injection molded properties are thepreferred standard and are used for the basis of call outexamples. Call outs are allowed to b
18、e made in either ASTM orISO properties where both are given using the same linecallout.NOTE 2An example of this classification system for SPS is asfollows: For SPS0111, the designation SPS would indicate SPS =syndiotactic polystyrene, 01= homopolymer, 1 = general purpose, and 1(grade) = minimum grad
19、e requirements as found in Table SPS.4.1.1 To facilitate the incorporation of future or specialmaterials the “Other/Unspecified” category (0) for group, class,and grade is shown in Table SPS. The basic properties can beobtained from Tables A or B as they apply (see 4.3).4.2 Reinforced and filled syn
20、diotactic polystyrene materialsare classified in accordance with Table SPS as noted or withTable A.4.2.1 Reinforced and Additive MaterialsA single letterwill be used for the major reinforcement or combination, orboth, along with two digits that indicate the percentage ofaddition by mass with the tol
21、erances as shown in Table 1.NOTE 3This part of the system uses the type and percentages ofadditive to designate the modification of the basic material. Percentage ofadditives can be shown on the suppliers Technical Data Sheet unless it isproprietary. If necessary, additional requirements shall be in
22、dicated by theuse of the suffix part of the system, as given in Section 5.NOTE 4Determine ash content of filled or reinforced materials usingTest Method D5630 or ISO 34511 where applicable.4.2.2 Table A, Detail RequirementsAn identifying num-ber is made up of the letterAand five digits comprising th
23、e cellnumbers for the new requirements in the designated order asthey appear in Table A.4.2.2.1 Although the values listed are necessary to includethe range of properties available in existing materials, notevery possible combination of the properties exists or can beobtained.NOTE 5Using Table SPS a
24、nd Table A, an example of a reinforcedsyndiotactic polystyrene of this classification system is as follows: Thedesignation would indicate material requirements from Table A as:SPS0110G15A12332where:0110 = Homopolymer, Table SPS,G15 = Glass-reinforced at 15 % nominal (see 4.2.1),A = Table A for prope
25、rty requirements,1 = Tensile strength 50 MPa,2 = Flexural modulus or tensile modulus (ISO), 4000 MPa/min,3 = Izod impact 70 J/m or 7 kJ/m2(Charpy ISO), minimum,3 = Deflection temperature, 180C, minimum, and2 = Specific gravity, 1.2, minimum.If no properties are specified, the designation would beSPS
26、0110G15A00000.4.3 Table B has been incorporated into this classificationsystem to facilitate the classification of special materials whereneither Table SPS nor Table A reflect the required properties.Table B shall be used in the same manner as Table A.NOTE 6An example of a special material using thi
27、s classificationsystem is as follows: The following designation would indicate materialrequirements from Table B as:SPS0110B76013where:0110 = homopolymer from Table SPS,B = Cell Table B for properties requirements,7 = Tensile strength, 70 MPa, minimum,6 = Tensile Modulus, 3500 MPa, minimum,0 = Unspe
28、cified Izod impact/ISO Charpy impact,1 = Vicat softening temperature, 80C, minimum, and3 = Flow rate, 3.0, minimum.5. Suffix Requirements5.1 When additional requirements are needed that are notcovered by the basic requirements or cell table requirementsthey shall be indicated through the use of suff
29、ixes.5.2 A list of suffixes can be found in Classification SystemD4000 (Table 3) and are to be used for additional requirementsas appropriate. Additional suffixes will be added to thatstandard as test methods and requirments are developed andrequested.NOTE 7Properties of pigmented or colored SPS mat
30、erials can differfrom the properties of natural or unpigmented SPS material, depending onthe choice of colorants and the concentration. The main property affectedis ductility, as illustrated by a reduction in Izod impact strength. If specificproperties of pigmented SPS materials are necessary, prior
31、 testing betweenthe materials supplier and end user should be initiated.6. Basic Requirements6.1 Basic requirements from Table SPS, as they apply, arealways in effect unless superseded by specific suffix require-ments, which always take precedence.6.2 The plastics composition shall be uniform and sh
32、allconform to the requirements specified herein.7. General Requirements7.1 The material composition shall conform to the require-ments in Tables SPS. A, B, and suffix requirements as theyapply.8. Detail Requirements8.1 Test specimens for the various materials shall conformto the requirements prescri
33、bed in Tables SPS, A, and B, andsuffix requirements as they apply.8.2 For the purpose of determining conformance, all speci-fied limits for a specification (line callout) based on thisclassification system are absolute limits, as defined by PracticeE29.9. Sampling9.1 Sampling shall be statistically
34、adequate to satisfy therequirements of 13.4.9.2 A batch or lot is construed as a unit of manufacture asprepared for shipment, and is allowed to consist of two or moreproduction runs or batches.D6339 11210. Sample PreparationInjection10.1 The test specimens shall be molded by an injectionmolding proc
35、ess in accordance with Practice D3641 as follows:10.1.1 Pre-drying of pellets is only required for blends ofSPS. Four hours of drying at 200C in a dryer with a dew pointof 30C is recommended for SPS/PA blends.10.1.2 For injection-molded samples 290 6 10C shall bethe melt temperature, and 100 6 10C o
36、r 160 6 10C for filledor reinforced materials, shall be the mold temperature.10.1.2.1 Average injection velocity shall be 200 6 100mm/s, and can be calculated using the following equation:AIV 5pd2Va4ns(1)where:d = screw diameter, mmVa = screw advance speed, mm/sn = number of mold cavities, ands = cr
37、oss-sectional area of test specimen, mm2.11. Conditioning11.1 Test specimens shall be conditioned in the standardlaboratory atmosphere in accordance with Procedure A ofPractice D618 before performing the required tests. Blendsshall be tested dry as molded.11.2 Conduct tests in the standard laborator
38、y atmosphere of23 6 2C and 50 6 10 % relative humidity in accordance withPractice D618.12. Test Methods12.1 Unless otherwise stated herein, determine the proper-ties enumerated in this classification system by means of thefollowing Test Methods as applicable: D256 or ISO 179; D638or ISO 527; D648 or
39、 ISO 75; D790; D792 or ISO 1183; D1238or ISO 1133; D1525 or ISO 306.13. Inspection and Certification13.1 Inspection and certification of the material suppliedwith reference to a specification based on this classificationsystem shall be for conformance to the requirements specifiedherein.13.2 Lot-acc
40、eptance inspection shall be the basis on whichacceptance or rejection of the lot is made. The lot-acceptanceinspection shall consist of the following:13.2.1 Tensile strength, and13.2.2 Ash (filled products only).13.3 Periodic-check inspection with reference to a specifi-cation based upon this classi
41、fication system shall consist of thetests for all requirements of the material under this classifica-tion system. Inspection frequency shall be adequate to ensurematerial is certifiable in accordance with 13.4.13.4 Certification shall be that the material was manufac-tured by a process in statistica
42、l control, sampled, tested andinspected in accordance with this classification system and thatthe average values for the lot meet the requirements of thespecification (line callout).13.5 A report of the test results shall be furnished whenrequested. The report shall consist of results of the lot-acc
43、eptance inspection for the shipment and results of the mostrecent periodic-check inspection.14. Packaging and Package Marking14.1 For packing, packaging, and marking, the provisions ofPractice D3892 apply.15. Keywords15.1 plastics; syndiotactic polystyreneD6339 113TABLE SPS Materials, Detail Require
44、ment, Natural Color OnlyGroup Description Class Description Grade MFRATensile Strength,BMPaFlexuralModulus,CMPaTensileModulus,DMPaDTUL, C,1.8 MPaESpecificGravityFIzodGCharpyHASTM ISO ASTM ISO ASTM ISOASTMJ/mISOkJ/m201 Homopolymer 1 Generalpurpose1 7 40 40 3900 3300 105 1.05 15 22 3 40 40 3900 3500 1
45、05 1.05 15 20G30 . 95 100 9200 9000 210 220 1.25 70 9G40 . 110 110 11 400 11 000 225 240 1.32 100 100 Other 00 .2 Impactmodified1 5 30 30 2600 2400 90 80 1.02 120 10G20 . 80 85 6800 6800 180 200 1.16 60 6G30 . 95 105 8000 8000 210 220 1.21 100 100 Other 00 .02 Copolymer 1 Generalpurpose1 4 60 65 350
46、0 3400 70 80 1.04 30 30 Other 0003 Flameretardant1 Generalpurpose0 Other 00 .2 ImpactmodifiedG10 . 50 60 5500 4800 100 110 1.29 55 4.5G20 . 80 85 6500 6500 190 200 1.32 70 7.5G30 . 110 125 9200 8500 215 220 1.39 80 8G40 . 110 125 11 500 11 000 230 240 1.50 140 120 Other 00 .04 Blends 1 GeneralPurpos
47、eG10 20 . 90 . 4000 . 140 . . 3G20 6 . 135 . 6500 . 230 . . 6G30 13 . 135 . 9000 . 230 . . 80 Other 002 ImpactModifiedG10 6 . 75 . 3400 . 130 . . 80 Other 0000 Other 0 Other 00ATest Methods D1238, 300/1.2 condition; ISO 1133, 300/1.2 condition.BTest Methods D638, Type I specimen; ISO 527-2, Type 1A
48、specimen.CTest Methods D790, 3.2 by 12.7 mm specimen, 50 mm span, 1.3 mm/min cross-head rate, tangent.DISO 5272, Type 1A specimen, 1.0 mm/min cross-head rate, chordall dimensions within allowed.ETest Methods D648, 1.82 MPa stress, 3.2 by 12.7 mm specimen, 100 mm support, edgewise; ISO 75-1 and 2, 1.
49、8 MPa stress, 4 by 10 mm specimen, flat, 64 mm support - all dimensions within allowed tolerancesin standards.FTest Methods D792; ISO 1183.GTest Methods D256, 3.2 by 12.7 mm specimen;HISO 179, 4 by 10 mm specimenall dimensions within allowed tolerances in standards.D6339114TABLE A Reinforced MaterialsDetail RequirementsDesignationOrder NumberInjection MoldedProperties0 12345 67891 Tensile Strength,Amin,MPaunspecified 50 70 90 100 125 150 175 200 specify2 Flexural Modulus,Bmin, or TensileModulus,Cmin, MPaunspecified 3500 4000 4800 6000 7000 8000 10
