1、Designation: D3935 15Standard Classification System and Basis for Specification forPolycarbonate (PC) Unfilled and Reinforced Material1This standard is issued under the fixed designation D3935; the number immediately following the designation indicates the year oforiginal adoption or, in the case of
2、 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.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This cla
3、ssification system covers unfilled and reinforcedpolycarbonate and polycarbonate copolymer materials suitablefor injection molding, blow molding, and extrusion. Some ofthese compositions may also find use for compression moldingor application from solution. This classification system allowsfor the u
4、se of recycled materials provided that all specificationrequirements are met.1.2 The properties in this classification system are thoserequired for identifying the compositions covered. Other re-quirements necessary for identifying particular characteristicsimportant to specific applications are nor
5、mally specified byusing the suffixes in accordance with Section 5.1.3 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.4 This classification system and subsequent line callout(specification) are intended to provide a means of c
6、alling outplastic materials used in the fabrication of end items or parts.It is not intended for the selection of materials. Materialselection should be made by those having expertise in theplastic field only after consideration of the design and theperformance required of the part, the environment
7、to which itwill be exposed, the fabrication process to be employed, thecosts involved, and the inherent properties of the material otherthan those covered in this standard.NOTE 1This classification system and ISO 7391-1 and ISO 7391-2address the same subject matter, but differ in technical content.1
8、.5 The following precautionary caveat pertains only to thetest methods portion, Section 12, of this classification system.This standard does not purport to address all safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safet
9、y and healthpractices and determine the applicability or regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2D256 Test Methods for Determining the Izod PendulumImpact Resistance of PlasticsD638 Test Method for Tensile Properties of PlasticsD648 Test Method for Deflection
10、Temperature of PlasticsUnder Flexural Load in the Edgewise PositionD790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating Materi-alsD792 Test Methods for Density and Specific Gravity (Rela-tive Density) of Plastics by DisplacementD883 Terminology R
11、elating to PlasticsD1238 Test Method for Melt Flow Rates of Thermoplasticsby Extrusion PlastometerD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD2584 Test Method for Ignition Loss of Cured ReinforcedResinsD3892 Practice for Packaging/Packing of PlasticsD4000 Classification System for S
12、pecifying Plastic Materi-alsD5630 Test Method for Ash Content in PlasticsD7209 Guide for Waste Reduction, Resource Recovery, andUse of Recycled Polymeric Materials and Products (With-drawn 2015)3E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE169 Pr
13、actices for General Techniques of Ultraviolet-VisibleQuantitative Analysis2.2 ISO Standard:4ISO 7391-1 PlasticsPolycarbonate Molding and ExtrusionMaterials (Part 1: Designation2006)ISO 7391-2 PlasticsPolycarbonate Molding and Extrusion1This standard is under the jurisdiction of ASTM Committee D20 on
14、 Plasticsand is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materi-als.Current edition approved May 15, 2015. Published June 2015. Originallyapproved in 1980. Last previous edition approved in 2009 as D3935 - 09. DOI:10.1520/D3935-15.2For referenced ASTM standards, visit the AS
15、TM 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.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from Ameri
16、can National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1Materials (Part
17、 2: Preparation of Test Specimens andDetermination of Properties)3. Terminology3.1 DefinitionsThe terminology used in this classificationsystem is in accordance with Terminologies D883 and D1600.The polycarbonate materials are to be designated PC asspecified in Terminology D1600.4. Classification4.1
18、 Unfilled polycarbonate materials are classified intogroups according to their composition. These groups aresubdivided into classes and grades as shown in Table PCTABLE 1 PC Polycarbonate Materials and Detail RequirementsNOTE 1 The values are for naturals; colors may be different.Group Description C
19、lass Description Grade DescriptionAFlow Rate,BTest MethodD1238,g/10 minSpecificGravity, TestMethodD792IzodImpact,CTestMethodsD256,J/m, minTensileYieldStressDElongationatBreakDFlexuralModulus,ETestMethodsD790,MPa, minDeflectionTempera-ture, TestMethodD648,FC, minTest MethodD638,MPa, minTest MethodD63
20、8,%, min01 PC 1 general purpose 1 24 1.191.22 Use Table B to define these properties.2 15 to 30 1.191.22 Use Table B to define these properties.3 12 to 20 1.191.22 640 55 100 2000 1264 9 to 18 1.191.22 750 60 105 2100 1265 6 to 13 1.191.22 750 60 110 2200 1286 4 to 8 1.191.22 750 60 110 2200 1287 24
21、 1.191.22 Use Table B to define these properties.2 15 to 30 1.191.22 Use Table B to define these properties.3 12 to 20 1.191.22 640 55 100 2000 1264 9 to 18 1.191.22 640 60 100 2100 1265 6 to 13 1.191.22 640 60 105 2200 1286 4 to 8 1.191.22 640 60 110 2200 1287 24 1.191.22 Use Table B to define thes
22、e properties.2 15 to 30 1.191.22 Use Table B to define these properties.3 12 to 20 1.191.22 640 55 100 2000 1244 9 to 18 1.191.22 750 60 105 2100 1245 6 to 13 1.191.22 750 60 110 2100 1266 4 to 8 1.191.22 750 60 110 2200 1267 24 1.191.22 Use Table B to define these properties.2 15 to 30 1.191.22 Use
23、 Table B to define these properties.3 12 to 20 1.191.22 640 55 100 2000 1264 9 to 18 1.191.22 750 60 105 2100 1265 6 to 13 1.191.22 750 60 110 2200 1286 4 to 8 1.191.22 750 60 110 2200 1287 24 1.221.26 Use Table B to define these properties.2 15 to 30 1.221.26 Use Table B to define these properties.
24、3 12 to 20 1.221.26 80 60 100 2100 1284 9 to 18 1.221.26 80 60 110 2200 1285 6 to 13 1.221.26 90 60 110 2200 1306 4 to 8 1.221.26 90 60 110 2200 1307 24 1.221.26 Use Table B to define these properties.2 15 to 30 1.221.26 Use Table B to define these properties.3 12 to 20 1.221.26 80 60 100 2100 1264
25、9 to 18 1.221.26 80 60 110 2200 1265 6 to 13 1.221.26 90 60 110 2200 1286 4 to 8 1.221.26 90 60 110 2200 1307 50 1.181.22 Use Table B to define these properties.2 nominal 45 1.181.22 570 50 100 2070 1043 nominal 29 1.181.22 620 50 100 2070 1064 nominal 18 1.181.22 770 50 100 2160 1075 nominal 10 1.1
26、81.22 810 50 100 2200 1080 other . . . . . . .2UVHstabilized 1 50 1.181.22 Use Table B to define these properties.2 nominal 45 1.181.22 570 50 100 2070 1023 nominal 29 1.181.22 620 50 100 2070 1044 nominal 18 1.181.22 770 50 100 2160 1055 nominal 10 1.181.22 810 50 100 2200 1060 other . . . . . . .3
27、 impact-modified 0 other . . . . . . .4 FDAJcompliantformulations1 50 1.181.22 Use Table B to define these properties.2 nominal 45 1.181.22 570 50 100 2070 1043 nominal 29 1.181.22 620 50 100 2070 1064 nominal 18 1.181.22 770 50 100 2160 1075 nominal 10 1.181.22 810 50 100 2200 1080 other . . . . .
28、. .5 flame-retardedG1 TBD 1.181.22 Use Table B to define these properties.0 other . . . . . . .0 other 0 other . . . . . . .06 PC copolymerlow-heat easyflow1 general purpose 1 TBD 1.181.22 Use Table B to define these properties.0 other . . . . . . .2 UV stabilizedH1 TBD 1.181.22 Use Table B to defin
29、e these properties.0 other . . . . . . .3 impact-modified 1 TBD 1.171.22 See above0 other . . . . .4 FDAJcompliantformulations1 TBD 1.181.22 Use Table B to define these properties.0 other . . . . . . .5 flame-retardedG1 TBD 1.181.22 Use Table B to define these properties.0 other . . . . . . .0 other
30、 0 other . . . . . . .99 PC otherI0 other 0 other . . . . . . .AAll grades are listed by performance requirements.BUse condition 300/1.2 for Groups 01, 02, and 05. Define the conditions for other groups in the suffixes as needed.CTest specimens are 3.2 mm thick, with a notch radius of 0.25 mm, teste
31、d by Method A.DTest specimens are Type I tensile bars, 3.2 mm thick, tested at a crosshead speed of 50 mm/min.ETest specimens are 3.2 by 12.7 mm, tested by Method I, Procedure A (Tangent), at a crosshead speed of 1.3 mm/min and a span-to-depth ratio of 16 to 1.FTest specimens are 3.2 mm thick, teste
32、d at 1820 kPa, and are not annealed before testing.GUse suffix letter F, with the appropriate letters and digits specified in Classification D4000, to define specific requirements.HRefer to Practices E169 for testing procedure. Specific requirements shall be stated in the purchase order or contract.
33、ITest specimens for Group 1, Class 4, Grade 1 are 6.4 mm thick with a notch radius of 0.25 mm and are tested by Method A.JManufactured in compliance with Food Additive Regulation 21CFR177.1580 governing polycarbonate resins for food-contact applicationsD3935 153NOTE 2An example of this classificatio
34、n system is as follows: thedesignation PC0214 indicates:PC = polycarbonate as found in Terminology D1600,02 = polycarbonate copolymer-flame retarded (group),1 = general purpose (class), and4 = requirements given in Table PC.4.1.1 To facilitate the specification of new, special, orrecycled materials,
35、 the “other” category (0) for class or grade,or both, is used as indicated in Table PC. The properties ofthese materials are specified using Tables A, B, or R as theyapply.4.2 Reinforced, pigmented, filled, and lubricated versions ofpolycarbonate materials are classified in accordance withTables PC
36、and A, B, or R. Table PC is used to specify basicmaterials. Table A or B is used to specify the propertyrequirements after the addition of reinforcement, pigments,fillers, or lubricants at the nominal level indicated (see 4.2.1).Table R is used for recycled materials.4.2.1 Asingle letter is used to
37、indicate the major category ofthe reinforcement, along with two numbers indicating thenominal percentage of additive(s) by mass, with the tolerancesas tabulated as follows:Category MaterialTolerance(Based on the Total Mass)C carbon and graphite fiber-reinforced2 percentage pointsG glass-reinforced15
38、 % glass content 3 percentage pointsL lubricants (such as PTFE,graphite, silicone, andmolybdenum disulfide)depends on material andprocessto be specifiedM mineral-reinforced 2 percentage pointsR combination/mixtures ofreinforcements or other fillers/reinforcements3 percentage points based ontotal rei
39、nforcementNOTE 3If necessary, additional requirements are specified usingsuffixes, in accordance with Section 5. The ash content of filled orreinforced materials is determined using Test Method D2584 whereapplicable.4.2.2 Specific requirements for reinforced, filled, or lubri-cated polycarbonate mat
40、erials shall be shown by a six-character designation that will consist of the letter A or B andthe five digits comprising the cell numbers for the propertyrequirements in the order in which they occur in Table A or B.4.2.2.1 Although the values listed in Tables A and B arenecessary to include the ra
41、nge of properties available inexisting materials, users should not infer that every possiblecombination of the properties exists or can be obtained.4.2.3 When the grade of the basic material is not shown, oris not important, a “0” grade classification shall be used forreinforced materials in this sy
42、stem.NOTE 4An example of this classification system for reinforcedpolycarbonate material is as follows: the designation PC0110G10A22230indicates:PC0110 = general-purpose polycarbonate from Table PC,G10 = glass reinforced at nominal 10 % level,A = Table A property requirements,2 = 60-MPa tensile stre
43、ngth, min,2 = 3000-MPa flexural modulus, min,2 = 80-J m Izod impact strength, min,3 = 125C deflection temperature, min, and0 = unspecified.If no properties are specified, the designation is PC0110G10A00000.4.3 Table B has been incorporated into this classificationsystem to facilitate the classificat
44、ion of special materials whereTable PC or Table A do not reflect the required properties.Table B shall be used in the same manner as Table A.NOTE 5The mechanical properties of polycarbonates can be affectedby the amounts and types of additives and colorants used. The most oftenobserved effect is a c
45、hange in the ductility of the material as evidenced inreductions of up to 90 % in Izod impact strength and 25 % or more intensile elongation. A classification using Table PC and Table B should beused if properties of pigmented or specially formulated polycarbonatesneed to be specified.NOTE 6An examp
46、le of the use of this classification system for aspecial polycarbonate material is as follows: the designationPC0110B34720 indicates:PC0110 = general-purpose polycarbonate from Table PC,B = Table B property requirements,3 = 60-MPa tensile strength, min,4 = 2100-MPa flexural modulus, min,7 = 640-J m
47、Izod impact strength, min,2 = 105C deflection temperature, min, and0 = unspecified.NOTE 7The short- and long-term mechanical properties of polycar-bonate materials can be affected adversely by their prior processing aswell as end-use exposure to chemicals, weathering, and secondaryfinishing steps. E
48、fforts to reuse materials may include direct feedback intothe system from which they are generated, or they could involve isolationfor reuse at other times into other processes or parts. Most manufacturersliterature contains recommendations regarding direct feedback practices toaid the user in maint
49、aining the properties of the original materials as muchas possible. When polycarbonate resins are isolated and reprocessed inconjunction with fillers, additives, colorants, etc., there is a special riskthat the properties of the final products may not be equal to those obtainedwhen “virgin” resins are used. While the test specimen properties calledout in this classification system may be used to screen these materials, theuser should take precautions to ensure that parts made from thesematerials meet the
