1、Designation: D 3275 08Standard Classification System forE-CTFE-Fluoroplastic Molding, Extrusion, and CoatingMaterials1This standard is issued under the fixed designation D 3275; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the y
2、ear 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 Department of Defense.1. Scope*1.1 This classification system co
3、vers melt processible mold-ing, extrusion, and coating materials of ethylene-chlorotrifluoroethylene (E-CTFE) fluoroplastics. The resin is acopolymer of ethylene and chlorotrifluoroethylene containingapproximately 80 weight % of chlorotrifluoroethylene.1.2 The values stated in SI units, as detailed
4、in IEEE/ASTM SI-10, are to be regarded as standard.1.3 The following precautionary statement pertains only tothe test methods portion, Section 11 of this classificationsystem.This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility
5、 of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.NOTE 1Although this classification system and ISO 12086-1 andISO 12086-2 differ in approach or detail, data obtained using either aretechnically
6、 equivalent.2. Referenced Documents2.1 ASTM Standards:2D 150 Test Methods for AC Loss Characteristics and Per-mittivity (Dielectric Constant) of Solid Electrical Insula-tionD 618 Practice for Conditioning Plastics for TestingD 638 Test Method for Tensile Properties of PlasticsD 792 Test Methods for
7、Density and Specific Gravity (Rela-tive Density) of Plastics by DisplacementD 883 Terminology Relating to PlasticsD 1238 Test Method for Melt Flow Rates of Thermoplasticsby Extrusion PlastometerD 1600 Terminology for Abbreviated Terms Relating toPlasticsD 1708 Test Method for Tensile Properties of P
8、lastics byUse of Microtensile SpecimensD 2863 Test Method for Measuring the Minimum OxygenConcentration to Support Candle-Like Combustion ofPlastics (Oxygen Index)D 3892 Practice for Packaging/Packing of PlasticsD 4591 Test Method for Determining Temperatures andHeats of Transitions of Fluoropolymer
9、s by DifferentialScanning CalorimetryIEEE/ASTM SI-10 Use of the International System of Units(SI): The Modern Metric System2.2 ISO Standards:3ISO 12086-1 PlasticsFluoropolymer Dispersion andMoulding and Extrusion MaterialsPart 1: Designationand Basis for SpecificationISO 12086-2 PlasticsFluoropolyme
10、r Dispersion andMoulding and Extrusion MaterialsPart 2: Preparation ofTest Specimens and Determination of Properties3. Terminology3.1 Definitions: Definitions of terms used in this classifica-tion system shall be in accordance with Terminology D 883.3.1.1 lot, none production run or a uniform blend
11、of twoor more production runs.3.2 Abbreviations:Abbreviations are in accordance withTerminology D 1600.4. Classification4.1 ECTFE materials are classified into groups in accor-dance with their physical appearance. The groups are furtherdivided into classes based on melt flow rate. These classes ares
12、ubdivided into grades as shown in the Table E-CTFE.1This classification system is under the jurisdiction ofASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterialsCurrent edition approved Aug. 15, 2008. Published September 2008. Originallyapprov
13、ed in 1973. Last previous edition approved in 2006 as D 3275 - 06.2For 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 web
14、site.3Available 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 this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, U
15、nited States.TABLE ECTFEGroup Class Description Grade Melt FlowRate,A,Bg/10 minSpecificGravity,C23/23CTensileStrength,D,Emin, MPaElongation,E,Fmin, %MeltingPoint, C,GminOxygenIndex,Hmin, %DielectricConstant,Imax, 106HzDissipationFactor,Jmax, 106Hz01 powder 1 Low melt flowrate1 0.051.50 1.651.71 40 2
16、00 240 52 2.6 0.0152 Medium meltflow rate1 1.516.0 1.651.71 40 200 240 52 2.6 0.0153 High meltflow rate1 6.125 1.651.71 40 200 240 52 2.6 0.0150 Other 002 pellet 1 Low melt flowrate1 0.051.50 1.651.71 40 200 240 52 2.6 0.0152 Medium meltflow rate1 1.516.0 1.651.71 40 200 240 52 2.6 0.0153 High meltf
17、low rate1 6.125 1.651.71 40 200 240 52 2.6 0.0154 Ultra Lowmelt flow rate1 0.81.3 1.651.71 40 200 220 52 2.6 0.0150 Other 000 0 Other 0ASee 11.2 for test method for above parameters.BSee 11.2 for test method for group 2 class 4 grade 1 replace 2.16 kg mass with 5 kg mass.CSee 11.4 for test method fo
18、r above parameters.DSee 11.5 for test method for above parameters.EAt 23 6 2C (73.4 6 3.6F).FSee 11.5 for test method for above parameters.GSee 11.3 for test method for above parameters.HSee 11.7 for test method for above parameters.ISee 11.6 for test method for above parameters.JSee 11.6 for test m
19、ethod for above parameters.An example of a material of this classification system isgiven as follows: ECTFE 01 1 1where:01 = ECTFE powder1 = low melt flow2 = properties in accordance with Table E-CTFE (Grade1)4.1.1 To facilitate incorporation of future material, the othercategory for Group (00), Cla
20、ss (0) and Grade (0) are shown inTable E-CTFE.5. Ordering Information5.1 The purchase order or inquiry for these materials shallstate the classification callout. For example, D 3275ECTFE 01 1 2.6. General Requirements6.1 The material covered by this classification system shallconform to the requirem
21、ents prescribed in Table E-CTFE whentested by the procedures specified herein.7. Detail Requirements7.1 Test specimens prepared in accordance with Section 10shall conform to the requirements prescribed for the particularclass.8. Sampling8.1 Sampling must be statistically adequate to satisfy therequi
22、rements of 12.4.9. Number of Tests9.1 One set of test specimens as prescribed in Section 11shall be considered sufficient for testing each sample. Theaverage result of the specimens tested shall conform to therequirements of this classification system.10. Specimen Preparation10.1 Test Specimens:10.1
23、.1 Prepare test moldings 3.18 6 0.3 mm(0.125 6 0.012 in.) thick between two 0.38 to 0.51 mm (0.015to 0.020 in.) thick chromium-plated ferrotype plates. Use a“picture frame” type compression molding chase with innerdimensions of 178 by 178 mm (7 by 7 in.) and having athickness suitable to produce the
24、 required molded sheet. Use acharge of resin sufficient to provide the thickness sheetspecified.10.1.2 Place the mold chase on top of a chromium-platedferrotype plate. Charge a quantity of resin sufficient to producea 3.18 6 0.30-mm (0.125 6 0.012-in.) sheet in a diagonalpattern from corner to corne
25、r forming an “X” pattern. Place theother chromium-plated ferrotype plate on top of the resincharge and place the assembly in a compression molding presswhich has been heated to 264 6 3C (507 6 5.4F). Apply apressure of 0.34 MPa (50 psi) and hold for 4 min. Increasepressure to 1.72 MPa (250 psi) and
26、hold for 1 min followed byincreasing the pressure to not less than 2.24 MPa (325 psi) andholding for 5 min. Remove the chase assembly from the pressand immediately quench it in an ice-water bath, vigorouslyD3275082agitating the chase. Remove the ferrotype plates, keeping thechase and molded sheet in
27、 the ice water bath until quenching iscomplete.11. Test Methods11.1 Conditioning:11.1.1 For tests of specific gravity, tensile properties, oxy-gen index, and electrical properties, condition the molded testspecimens in accordance with Procedure A of Practice D 618,with the exception that only 4-h co
28、nditioning is required.11.1.2 Conduct tests at the standard laboratory temperaturesof 23 6 2C (73.4 6 3.6F) for determination of specificgravity, tensile properties, and electrical properties. Since theresin does not absorb water, the maintenance of constanthumidity during testing is not necessary.
29、Conduct tests for meltflow rate, oxygen index, and melting endotherm under ordinarylaboratory conditions.11.2 Melt Flow RateDetermine the melt flow rate inaccordance with Test Method D 1238 modified by use ofcorrosion-resistant alloy for the barrel lining, orifice, and pistontip.11.3 Melting Endothe
30、rm PeakDetermine the melting en-dotherm peak in accordance with Test Method D 4591. Forinstruments capable of digital data processing of the meltingendotherm curve, the peak maximum, as determined by thepoint on the curve for which the tangent has zero slope, will bereported as the melting point. Ad
31、ditionally, the heat of fusionand recrystallization will be reported directly from the displayof the data processing equipment provided that the instrumenthas been calibrated with a standard material as defined in TestMethod D 4591.11.3.1 The use of other thermal techniques, such as differ-ential th
32、ermal analysis (DTA), capable of measuring themelting endotherm peak and giving equivalent results, isallowed.11.4 Specific GravityCut two specimens from the com-pression molded sheet and test in accordance with TestMethods D 792.11.5 Tensile PropertiesDetermine the tensile properties inaccordance w
33、ith Test Method D 638 with the following excep-tions:11.5.1 Use the test specimen and die identified in TestMethod D 1708 and shown in Fig. 1. The initial jaw separationshall be 22.2 6 0.13 mm (0.875 6 0.005 in.), and the speed oftesting shall be 51 mm/min (2 in./min). Clamp the specimenswith essent
34、ially equal lengths in each jaw. Determine theelongation from the chart, expressing it as a percentage of theinitial jaw separation.11.6 Dielectric Constant and Dissipation FactorDetermine the dielectric constant and dissipation factor onthree specimens, each 50.8 mm (2 in.) in diameter in accor-dan
35、ce with Test Methods D 150. Testing shall be at 60 Hz and106Hz.11.7 Oxygen IndexDetermine the oxygen index in accor-dance with Test Method D 2863.12. Inspection and Certification12.1 Inspection and certification of the material suppliedwith reference to a specification based on this classificationsy
36、stem shall be for conformance to the requirements specifiedherein.FIG. 1 Test Specimen and DieD327508312.2 Lot-acceptance shall be the basis on which acceptanceor rejection of the lot is made. The lot-acceptance inspectionshall consist of melt flow rate determination.12.3 Periodic check inspection w
37、ith reference to a specifi-cation based on this classification system shall consist of thetests for all requirements of the material under the specifica-tion. Inspection frequency shall be adequate to insure thematerial is certifiable in accordance with 12.4.12.4 Certification shall be that the mate
38、rial was manufac-tured by a process in statistical control, sampled, tested, andinspected in accordance with this classification system, andthat the average values for the lot meet the requirements of thespecification (line callout).12.5 A report of test results shall be furnished when re-quested. T
39、he report shall consist of results of the lot-acceptanceinspection for the shipment and the results of the most recentperiodic-check inspection.13. Packaging and Package Marking13.1 PackagingThe material shall be packaged in stan-dard commercial containers so constructed as to ensure accep-tance by
40、common or other carriers for safe transportation to thepoint of delivery unless otherwise specified in the contract ororder.13.2 MarkingShipping containers shall be marked withthe name of the material, type, or melt index, and quantitytherein.13.3 All packing, packaging, and marking provisions ofPra
41、ctice D 3892 shall apply to this classification system.14. Keywords14.1 chlorotrifluoroethylene copolymers; chlorotrifluoro-ethylene-ethylene copolymers; E-CTFE; extrusion material;fluoropolymer; fluoropolymers; melt flow; melt-processiblefluoropolymer; molding material; powder coating; roto-lining;
42、roto-moldingSUMMARY OF CHANGESCommittee D20 has identified the location of selected changes to this standard since the last issue,D 3275 - 06, that may impact the use of this standard. (August 15, 2008)(1) Revised Oxygen Index in Table E-CTFE from 60 % min to52 % min.ASTM International takes no posi
43、tion respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibili
44、ty.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to AST
45、M International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address
46、shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D3275084
