1、Designation: D 6339 05Standard Specification forSyndiotactic Polystyrene Molding and Extrusion (SPS)1This standard is issued under the fixed designation D 6339; 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.1. Scope*1.1 This specification covers syndiotactic polystyrene ma-terials including homopolymer, copolymers, blends, and im-pact modified,
3、 suitable for molding and extrusion. Recycledproduct will be addressed in a separate standard.1.2 This specification is intended to be a means of callingout plastic materials used in fabrication of end use items orparts. Material selection should be made by those havingexpertise in the plastics fiel
4、d after careful consideration of thedesign and the performance required of the part, the environ-ment to which it will be exposed, the fabrication process to beemployed, the inherent properties of the material other thanthose covered by this specification, and the economics.1.3 The properties includ
5、ed in this specification are thoserequired to identify the compositions covered. Other require-ments necessary to identify particular characteristics importantto specialized applications can be called out using the suffixesgiven in Section 5.NOTE 1There is no ISO equivalent.2. Referenced Documents2.
6、1 ASTM Standards:2D 256 Test Methods for Impact Resistance of Plastics andElectrical Insulating MaterialsD 618 Practice for Conditioning Plastics for TestingD 638 Test Method for Tensile Properties of PlasticsD 648 Test Method for Deflection Temperature of Plasticsunder Flexural LoadD 790 Test Metho
7、ds for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating MaterialsD 792 Test Methods for Specific Gravity (Relative Density)of Plastic by DisplacementD 883 Terminology Relating to PlasticsD 1238 Test Methods for Flow Rate of Thermoplastics byExtrusion PlastometerD
8、1525 Test Method for Vicat Softening Temperature ofPlasticsD 1898 Practice for Sampling of PlasticsD 3641 Practice for Injection Molding Test Specimens ofThermoplastic Molding and Extrusion MaterialsD 3892 Practice for Packaging/Packing of PlasticD 4000 Classification System for Specifying Plastic M
9、ate-rialsD 5630 Test Method for Ash Content in Thermoplastics2.2 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 Determination of Charpy Impact StrengthPa
10、rt1: 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 the Melt Mass-FlowRate (MFR)
11、and the Melt Volume-Flow Rate (MVR) ofThermoplasticsISO 1183 Plastics: Methods for Determining the Densityand Relative Density of Non-Cellular PlasticsISO 3451 Plastics: Determination of Ash-Part 1 GeneralMethods3. Terminology3.1 DefinitionsFor definitions of technical terms pertain-ing to plastics
12、used in this specification, see TerminologyD 883.4. Classification4.1 Syndiotactic polystyrene materials are classified intogroups according to classes and grades shown in the basicproperties table, Table SPS. Injection molded properties are the1This specification is under the jurisdiction of ASTM C
13、ommittee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved March 1, 2005. Published March 2005. Originallyapproved in 1998. Last previous edition approved in 2004 as D 6339 - 04.2For referenced ASTM standards, visit the ASTM web
14、site, 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 Documents Order Desk, Bldg. 4 Section D,Philadelphia, PA, 199111-5094, Attn: PO
15、DS.4Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.1*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.preferred
16、 standard and are used for the basis of call outexamples. Call outs can be made in either ASTM or ISOproperties where both are given using the same line callout.NOTE 2An example of this classification system for SPS is asfollows: For SPS0111, the designation SPS would indicate SPS =syndiotactic poly
17、styrene = homopolymer = general purpose, and 1 (grade)= minimum grade 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
18、 Tables A or B as they apply (see 4.3).4.2 Reinforced and filled syndiotactic 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
19、 digits that indicate the percentage ofaddition by mass with the tolerances 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
20、 it isproprietary. If necessary, additional requirements shall be indicated 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 D 5630 or ISO 34511 where applicable.4.2.2 Table A, Detail RequirementsAn ident
21、ifying num-ber is made up of the letterAand five digits comprising the 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, usersshould not infer that
22、every possible combination of theproperties exists or can be obtained.NOTE 5Using Table SPS and 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 = Ho
23、mopolymer, Table SPS,G15 = Glass-reinforced at 15 % nominal (see 4.2.1),A = Table A for property 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
24、 = Specific gravity, 1.2, minimum.If no properties are specified, the designation would beSPS0110G15A00000.4.3 Table B has been incorporated into this specification tofacilitate the classification of special materials where neitherTable SPS nor Table A reflect the required properties. Table Bshall b
25、e used in the same manner as Table A.NOTE 6An example of a special material using this 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
26、 = Tensile strength, 70 MPa, minimum,6 = Tensile Modulus, 3500 MPa, minimum,0 = Unspecified Izod impact/ISO Charpy impact,1 = Vicat softening temperature, 80C, minimum, and3 = Flow rate, 3.0, minimum.5. Suffix Requirements5.1 When requirements are needed that supersede or supple-ment the property ta
27、ble or cell table requirements they shall bespecified through the use of suffixes. In general, the first suffixletter indicates the special requirements needed and the secondletter indicates the condition or test method, or both, with athree-digit number indicating the specific requirement. Thesuffi
28、xes that may be used are listed in Table 3 of ClassificationD 4000.NOTE 7Properties of pigmented or colored SPS materials can differfrom the properties of natural or unpigmented SPS material, depending onthe choice of colorants and the concentration. The main property affectedis ductility, as illust
29、rated by a reduction in Izod impact strength. If specificproperties of pigmented SPS materials are necessary, prior 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 these requi
30、rements are superseded byspecific suffix requirements, which always take precedence.7. General Requirements7.1 The material composition shall be uniform and shallconform to the requirements specified herein.8. Detail Requirements8.1 Test specimens for the various materials shall conformto the requir
31、ements prescribed 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.9. Sampling9.1 Sampling shall be in accordance with a sampli
32、ng pro-cedure statistically adequate to satisfy the requirements of 13.4.A lot of material shall be considered as a unit of manufactureas prepared for shipment, and may consist of two or moreproduction runs or batches.10. Sample PreparationInjection10.1 The test specimens shall be molded by an injec
33、tionmolding process in accordance with Practice D 3641 as fol-lows: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 temperatur
34、e, and 100 6 10C or 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:D6339052AIV 5pd2Va4ns(1)where:d = screw diameter,Va = screw advance speed,n = number of mold c
35、avities, ands = cross-sectional area of test specimen.11. Conditioning11.1 Test specimens shall be conditioned in the standardlaboratory atmosphere in accordance with Procedure A ofPractice D 618 before performing the required tests. Blendsshall be tested dry as molded.11.2 Conduct tests in the stan
36、dard laboratory atmosphere of23 6 2C and 50 6 5 % relative humidity in accordance withPractice D 618.12. Test Methods12.1 Unless otherwise stated herein, determine the proper-ties enumerated in this specification by means of the followingTest Methods as applicable: D 256 or ISO 179; D 638 or ISO527;
37、 D 648 or ISO 75; D 790; D 792 or ISO 1183; D 1238 orISO 1133; D 1525 or ISO 306.13. Inspection and Certification13.1 Inspection and certification of the material suppliedunder this standard specification shall be for conformance tothe requirements specified herein.13.2 Lot-acceptance inspection sha
38、ll 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 classification system shall
39、consist of thetests for all requirements of the material under this specifica-tion. Inspection frequency shall be adequate to ensure materialis certifiable in accordance with 13.4.13.4 Certification shall be that the material was manufac-tured by a process in statistical control, sampled, tested and
40、inspected in accordance with this classification system and thatthe average values for the lot meet the requirements of the linecallout specified.13.5 A report of the test results shall be furnished whenrequested. The report shall consist of results of the lot-acceptance inspection for the shipment
41、and results of the mostrecent periodic-check inspection.14. Packaging and Package Marking14.1 For packing, packaging, and marking, the provisions ofPractice D 3892 apply.15. Keywords15.1 plastics; syndiotactic polystyreneD6339053TABLESPSMaterials,DetailRequirement,NaturalColorOnlyGroupDescriptionCla
42、ssDescriptionGradeMFRATensileStrength,BMPaFlexuralModulus,CMPaTensileModulus,DMPaDTUL,C,1.8MPaESpecific GravityFIzodGCharpyHASTMISOASTMISOASTMISOASTMJ/mISOkJ/m201Homopolymer1General purpose174040390033001051.05152234040390035001051.051520G30.95100920090002102201.25709G40.11011011400110002252401.3210
43、0100Other00.2Impactmodified1530302600240090801.0212010G20.8085680068001802001.16606G30.95105800080002102201.21100100Other00.02Copolymer1General purpose1460653500340070801.043030Other0003Flameretardant1General purpose0Other00.2ImpactmodifiedG10.5060550048001001101.29554.5G20.8085650065001902001.32707
44、.5G30.110125920085002152201.39808G40.11012511500110002302401.50140120Other00.04Blends1General PurposeG1020.90.4000.140.3G206.135.6500.230.6G3013.135.9000.230.80Other002ImpactModifiedG106.75.3400.130.80Other0000Other0Other00ATestMethodsD1238,300/1.2condition;ISO1133,300/1.2condition.BTestMethodsD638,
45、TypeIspecimen;ISO527-2,Type1Aspecimen.CTestMethodsD790,3.2by12.7mmspecimen,50mmspan,1.3mm/mincross-headrate,tangent.DISO5272,Type1Aspecimen,1.0mm/mincross-headrate,chordalldimensionswithinallowed.ETestMethodsD648,1.82MPastress,3.2by12.7mmspecimen,100mmsupport,edgewise;ISO75-1and2,1.8MPastress,4by10m
46、mspecimen,flat,64mmsupport-alldimensionswithinallowedtolerancesinstandards. FTestMethodsD792;ISO1183.GTestMethodsD256,3.2by12.7mmspecimen;HISO179,4by10mmspecimenalldimensionswithinallowedtolerancesinstandards.D6339054TABLE A Reinforced MaterialsDetail RequirementsDesignationOrder NumberInjection Mol
47、dedProperties0 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 10 000 13 000 specify3 Izod Impact,Dmin, J/m unspecified 40 60 70 80 90 100 120 150 specifyCharpy Impact,E
48、kJ/m2unspecified 3.5 6 7 8 9 10 12 154 DTUL,FMPa, min C unspecified 100 130 180 210 225 245 260 280 specify5 Specific Gravity,Gmin unspecified 1.1 1.2 1.4 1.6 1.8 2.0 2.2 2.4 specifyATest Method D 638, Type I specimens.BTest Methods D 790, 3.2 by 12.7 mm (within allowed tolerances) specimen, 50 mm s
49、pan, 1.3 mm/min cross-head rate, tangent modulus.CTest Method ISO 527-2, Type 1A specimen, 1.0 mm/min cross-head rate, chord modulus.DTest Methods D 256, 3.2 by 12.7 mm (within allowed tolerances) specimen.EISO 179, 4 by 10 mm (within allowed tolerances) specimen.FTest Method D 648, deflection temperature under load, 1.82 MPa, 3.2 by 12.7 mm specimen (within allowed tolerances), 100 mm nominal support, edgewise orientation;ISO 75-1 and 2, 1.8 MPa, 64 mm support, flat orientation, 4 by 10 mm specimen (within allowed tolerances).GTest Methods D 792;
