1、Designation: D5138 11D5138 16Standard Classification System and Basis for Specification forLiquid Crystal Polymers Molding and Extrusion Materials(LCP)1This standard is issued under the fixed designation D5138; the number immediately following the designation indicates the year oforiginal adoption o
2、r, in the case 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 liquid crystal polymeric (LCP) materials su
3、itable for injection molding and extrusion. Thisclassification system allows the use of liquid crystal polymers that are recycled, reconstituted, recycled-regrind, recovered, orreprocessed, or a combination thereof, provided that the requirements as stated in this classification system are met. It i
4、s theresponsibility of the supplier and the buyer of liquid crystal polymers that are recycled, reconstituted, recycled-regrind, recovered,or reprocessed, or a combination thereof, to ensure compliance.1.2 The properties included in this classification system are those required to identify the compo
5、sitions covered. Otherrequirements necessary to identify particular characteristics important to specialized applications are allowed. These shall beagreed upon between the user and the supplier, by using suffixes as given in Section 5.1.3 This classification system and subsequent line callout (spec
6、ification) are intended to be a means of calling out plasticmaterials used in the fabrication of end-use items or parts. It is not intended for the selection of materials. Material selection canbe made by those having expertise in the plastics field after careful consideration of the design and the
7、performance required ofthe part, the environment to which it will be exposed, the fabrication process to be employed, the costs involved, and the inherentproperties of the material other than those covered by this classification system.1.4 The values stated in SI units are to be regarded as standard
8、.1.5 The following precautionary caveat pertains only to the test method portion, Section 11, of this classification system: Thisstandard 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 appropr
9、iate safety and health practices and determine the applicability of regulatory limitations priorto use.NOTE 1There is no known ISO equivalent to this classification system.standard.2. Referenced Documents2.1 ASTM Standards:2D256 Test Methods for Determining the Izod Pendulum Impact Resistance of Pla
10、sticsD618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD648 Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise PositionD790 Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electri
11、cal Insulating MaterialsD883 Terminology Relating to PlasticsD1238 Test Method for Melt Flow Rates of Thermoplastics by Extrusion PlastometerD1600 Terminology for Abbreviated Terms Relating to PlasticsD3418 Test Method for Transition Temperatures and Enthalpies of Fusion and Crystallization of Polym
12、ers by DifferentialScanning CalorimetryD3641 Practice for Injection Molding Test Specimens of Thermoplastic Molding and Extrusion MaterialsD3835 Test Method for Determination of Properties of Polymeric Materials by Means of a Capillary Rheometer1 This classification system is under the jurisdiction
13、of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved Sept. 1, 2011April 1, 2016. Published September 2011April 2016. Originally approved in 1990. Last previous edition approved in 20062011 asD5138 - 06.D5138 - 11
14、. DOI: 10.1520/D5138-11.10.1520/D5138-16.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not
15、 an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate
16、. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*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 States1D38
17、92 Practice for Packaging/Packing of PlasticsD4000 Classification System for Specifying Plastic MaterialsD5630 Test Method for Ash Content in PlasticsD7209 Guide for Waste Reduction, Resource Recovery, and Use of Recycled Polymeric Materials and Products (Withdrawn2015)3E29 Practice for Using Signif
18、icant Digits in Test Data to Determine Conformance with Specifications2.2 IEC and ISO Standards:4IEC 112 Recommended Method for Determining the Comparative Tracking Index of Solid Insulation MaterialsIEC 243 Recommended Methods of Test for Electrical Strength of Solid Insulating Materials at Power F
19、requenciesISO 62 PlasticsDetermination of Water AbsorptionISO 75-1 Determination of Temperature of Deflection Under LoadGeneral Test MethodISO 75-2 Determination of Temperature of Deflection Under LoadPlastics and EboniteISO 178 PlasticsDetermination of Flexural Properties of Rigid MaterialsISO 1801
20、A PlasticsDetermination of Izod Impact Strength of Rigid MaterialsISO 294-1 General PlasticsInjection Moulding of Test Specimens of Thermoplastic MaterialsGeneral Principles forInjection MoldingISO 527-1 PlasticsDetermination of Tensile PropertiesTest Conditions for Moulding and Extrusion of Plastic
21、sPropertiesGeneral PrinciplesISO 527-2 PlasticsDetermination of Tensile PropertiesTest Conditions for Moulding and Extrusion of PlasticsISO 604 PlasticsDetermination of Compressive PropertiesISO 3167 PlasticsMultipurpose Test SpecimensISO 3451-1 PlasticsDetermination of Ash ContentPart 1: General Me
22、thodsISO 11357 ISO 11357-1 Melt Point by Differential Scanning CalorimetryPlasticsDifferential Scanning Calorimetry (DSC)Part 1: General PrinciplesISO 11357-3 PlasticsDifferential Scanning Calorimetry (DSC)Part 3: Determination of Temperature and Enthalpy ofMelting and CrystallizationISO 11443 Melt
23、Viscosity by Capillary RheometryPlasticsDetermination of the Fluidity of Plastics Using Capillary andSlit-Die RheometersISO 20753 PlasticsTest Specimens2.3 Military Standard:5MIL-M-24519 Molding PlasticsElectrical Thermoplastics3 The last approved version of this historical standard is referenced on
24、 www.astm.org.4 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.5 Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/dodssp.daps.dla.mil.T
25、ABLE LCP Liquid Crystal PolymersClassificationGroup Description Class Description GradeA Description01 unsubstituted or methyl substituted, wholly aromaticcopolyester, polyether, or polyester amide1 high temperatureDTULB 260C02 medium temperatureDTUL = 220260C03 general purposeDTUL 260C02 medium tem
26、peratureDTUL = 220260C03 general purposeDTUL 260C02 medium temperatureDTUL = 220260C03 general purposeDTUL 260C02 medium temperatureDTUL = 220260C03 general purposeDTUL 220C000 other 0 other 0A Description unspecified.B DTUL is deflection temperature under load measured at 1.8 MPa and is determined
27、in accordance with Table A or Table B.D5138 1622.4 Underwriters Laboratories (UL):6UL 94 Test for Flammability of Plastic Materials for Parts in Devices and Appliances2.5 National Technical Information Service (NTIS):7AD297457 Procedure and Analytical Method for Determining Toxic Gases Produced by S
28、ynthetic Compounds3. Terminology3.1 DefinitionsExcept for the terms defined below, the terminology used in this classification system is in accordance withTerminologies D883 and D1600.3.2 Definitions of Terms Specific to This Standard:3.2.1 liquid crystal polymer (LCP)A family of thermoplastic polym
29、ers which upon heating to the processing temperature,exhibit ordered structure and under shear, highly aligned chains that are retained in the solid state. Liquid crystal polymers arepolymers that in the molten state exhibit birefringence in polarized light.4. Classification4.1 The LCPmaterials are
30、classified into groups according to their chemical composition. These groups are subdivided, whetherreinforced or not, into classes based on thermal performance as shown in Table LCP.NOTE 2An example of this classification system is as follows: The specification LCP0120 indicates the following LCP =
31、 liquid crystal polymer asfound in Terminology D1600:01 = Unsubstituted, or methyl substituted, wholly aromaticcopolyester, polyether, or polyester amide (group)2 = Medium temperature, DTUL = 220-260C (class)0 = Other (grade)4.1.1 To facilitate the incorporation of future or special materials, the “
32、other” category for Group (00), Class (0), and Grade (0)is shown in Table LCP.4.2 Reinforced, filled, and lubricated versions of LCPmaterials are classified in accordance with Tables LCP and TableA. TableLCP is used to specify the group or the group and class of LCP and Table A is used to specify th
33、e property requirements.NOTE 3Test specimens shall be prepared in accordance with ISO 3167,ISO 20753, Specimen Type 1AA1 or Practice D3641 accordingly.NOTE 4A similar callout can be developed using Table B.4.2.1 Reinforced, filled, and lubricated variations of the basic materials are identified by a
34、 single letter that indicates the filler,or reinforcement used, or both, and two digits that indicate the nominal quantity in percent by weight. The reinforcement letterdesignations and associated tolerance levels are shown in Table 4the following table: .6 Available from Underwriters Laboratories (
35、UL), 2600 N.W. Lake Rd., Camas, WA 98607-8542, http:/.7 Available from National Technical Information Service (NTIS), 5301 Shawnee Rd., Alexandria, VA 22312, http:/www.ntis.gov.TABLE A Property Requirements for Liquid Crystal Polymer Based on ISO Test Methods0 1 2 3 4 5 6 7 8 91 Tensilestrength,min,
36、 MPaISO 527 unspecified 70 100 120 140 160 180 200 220 specifyvalue2 Flexuralmodulus,min, GPaISO 178 unspecified 4 8 12 16 20 24 28 32 specifyvalue3 Notchedizodimpact,min, kJ/m2ISO 1801A unspecified 5 9 12 15 18 25 37 50 specifyvalue3 Notchedizodimpact,min, kJ/m2ISO 180 unspecified 5 9 12 15 18 25 3
37、7 50 specifyvalue4 DTULA at1.8 MPa,min, CISO 75/A unspecified 140 180 220 240 260 300 340 380 specifyvalue5 To bedeterminedunspecified specifyvalueA DTUL = Deflection temperature under load tested flatwise on 80 by 10 by 4-mm specimen.D5138 163Symbol MaterialTolerance(Based on Total MassA )C carbon
38、and graphite fiber 2 %G glass 2 %L lubricants (for example PTFE,graphite, silicone, andmolybdenum disulfide)depends upon material andprocess to be specifiedM mineral 2 %R combinations of reinforce-ments or fillers, or both3 % for the totalAAsh content of filled, or reinforced material, or both, is d
39、etermined using either Test Method D5630 or ISO 3451-1 where applicable.NOTE 5This part of the system uses the percent of reinforcements or additives, or both, in the callout of the modified basic material. The types andpercentages of reinforcements and additives are shown on the suppliers technical
40、 data sheet unless they are proprietary in nature. If necessary, additionalcallout of these reinforcements and additives can be accomplished by the use of the suffix part of the system (see Section 5).4.2.2 Specific requirements shall be shown by a six-character specification. The specification will
41、 consist of the letterAand thefive digits comprising the cell numbers for the property requirements in the order as they appear in Table A.4.2.2.1 Although the values listed are necessary to include the range of properties available in existing materials, this does notimply that every possible combi
42、nation of properties exists or can be obtained.4.2.3 When the grade or class of the basic material is not known or is not important, the “0” classification shall be used.NOTE 6An example of this classification for specifying a reinforced LCP material is given as follows: The specification LCP0120G30
43、A22450 wouldindicate the following material requirements:LCP = Liquid Crystal Polymer as found in Terminology D160001 = Unsubstituted or methyl substituted, wholly aromatic copolyester, polyether, or polyester amide (group),2 = medium temperature (class)0 = unspecified (grade)G30 = Glass reinforced
44、at 30 % nominal levelA = Table A property requirements2 = Tensile strength, min, 100 MPa2 = Flexural modulus, min, 8 GPa4 = Notched izod impact, min, 15 kJ/m5 = Deflection temperature under load, min, 260C at 1.8 MPa,0 = UnspecifiedTABLE B (Formerly Table A in D5138 90) Property Requirements for LCP
45、 Based on ASTM Test Methods0 1 2 3 4 5 6 7 8 9Tensile strength, MPa, min,A(D638)unspecified 70 100 120 140 160 180 200 220 specify valueFlex modulus, GPa, min,B(D790)unspecified 4 8 12 16 20 24 28 32 specify valueNotched Izodimpact, min,J/m, (D256)Cunspecified 40 75 100 125 150 200 300 400 specify v
46、alueDeflection temperature, min,C at 1.8 MPa, (D648)Dunspecified 140 180 220 240 260 300 340 380 specify valueTo be determined unspecified specify valueA Type 1 tensile bar, 3.2 mm thick tested at 5 mm/min 25 % (minimum length 200 mm).B 127 by 12.7 by 3.2-mm bar tested at 1.3 mm/min.C Bar thickness
47、3.2 mm.DTest Method D648, Method A.TABLE 4 Reinforcement-FillerA SymbolsB and TolerancesSymbol Material Tolerance(Based on Total MassA )C carbon and graphite fiber 2 %G glass 2 %L lubricants (for example PTFE,graphite, silicone, andmolybdenum disulfide)depends upon material andprocess to be specifie
48、dM mineral 2 %R combinations of reinforcementsor fillers, or both3 % for the totalAAsh content of filled, or reinforced material, or both, is determined using eitherTest Method D5630 or ISO 3451-1 where applicable.BAdditional symbols will be added to this table as required.D5138 164If no properties
49、are specified, the specification would be LCP0120G30A00000.5. Suffixes Requirements5.1 When additional requirements are needed that are not covered by the basic requirements or cell-table requirements, theyshall be indicated through the use of suffixes.5.2 Alist of suffixes is found in Classification System D4000 (Table 3) and are used for additional requirements as appropriate.5.2.1 Additional suffixes will be added to that standard as test methods and requirements are developed and requested.6. Gene
