1、Designation: D3275 08 (Reapproved 2013)Standard Classification System forE-CTFE-Fluoroplastic Molding, Extrusion, and CoatingMaterials1This standard is issued under the fixed designation D3275; 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 Department of Defense.1. Scope1.1 This classific
3、ation system covers melt processiblemolding, 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,
4、 as detailed 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 ther
5、esponsibility 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 a
6、retechnically equivalent.2. Referenced Documents2.1 ASTM Standards:2D150 Test Methods for AC Loss Characteristics and Permit-tivity (Dielectric Constant) of Solid Electrical InsulationD618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD792 Test Meth
7、ods 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 PlastometerD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD1708 Test Method for Tensile Properties
8、 of Plastics by Useof Microtensile SpecimensD2863 Test Method for Measuring the Minimum OxygenConcentration to Support Candle-Like Combustion ofPlastics (Oxygen Index)D3892 Practice for Packaging/Packing of PlasticsD4591 Test Method for Determining Temperatures andHeats of Transitions of Fluoropolym
9、ers 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 PlasticsFluoropoly
10、mer Dispersion andMoulding and Extrusion MaterialsPart 2: Preparation ofTest Specimens and Determination of Properties3. Terminology3.1 Definitions:3.1.1 Definitions of terms used in this classification systemshall be in accordance with Terminology D883.3.1.2 lot, none production run or a uniform bl
11、end of twoor more production runs.3.2 Abbreviations:3.2.1 Abbreviations are in accordance with TerminologyD1600.4. 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 cla
12、sses aresubdivided into grades as shown in the Table E-CTFE. Anexample of a material of this classification system is given asfollows: ECTFE 01 1 11This classification system is under the jurisdiction ofASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on Thermopl
13、asticMaterialsCurrent edition approved May 1, 2013. Published May 2013. Originallyapproved in 1973. Last previous edition approved in 2008 as D3275 - 08. DOI:10.1520/D3275-08R13.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org.
14、For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American 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
15、 standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1TABLE ECTFEGroup Class Description Grade Melt FlowRate,A,Bg/10 minSpecificGravity,C23/23CTensileStrength,D,Emin, MPaElongation,E,Fmin, %MeltingPoint, C,GminOxygenIndex,Hmin, %Di
16、electricConstant,Imax, 106HzDissipationFactor,Jmax, 106Hz01 powder 1 Low meltflow rate1 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 meltflow rate1 6.125 1.651.71 40 200 240 52 2.6 0.0150 Other 002 pellet 1 Low meltflow rate1 0.051.5
17、0 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 meltflow rate1 6.125 1.651.71 40 200 240 52 2.6 0.0154 Ultra Lowmelt flowrate1 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
18、 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 for above parameters.DSee 11.5 for test method for above parameters.EAt 23 2C (73.4 3.6F).FSee 11.5 for test method for above parameters.GSee 11.3 for test method for above parameters.HSee 11.7
19、 for test method for above parameters.ISee 11.6 for test method for above parameters.JSee 11.6 for test method for above parameters.where:01 = ECTFE powder1 = low melt flow2 = properties in accordance with Table E-CTFE (Grade 1)4.1.1 To facilitate incorporation of future material, the othercategory
20、for Group (00), Class (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, D3275ECTFE 01 1 2.6. General Requirements6.1 The material covered by this classification system shallconfo
21、rm to the requirements 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 t
22、o satisfy therequirements 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 T
23、est Specimens:10.1.1 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 suita
24、ble to produce the 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 fr
25、om corner to corner 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
26、MPa (250 psi) and 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, vigorouslyagitating the chase. Remove the ferrotype plates, keeping thechase and molde
27、d sheet in the ice water bath until quenching iscomplete.11. Test Methods11.1 Conditioning:D3275 08 (2013)211.1.1 For tests of specific gravity, tensile properties, oxy-gen index, and electrical properties, condition the molded testspecimens in accordance with Procedure A of Practice D618,with the e
28、xception that only 4-h conditioning 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 t
29、esting is not necessary. 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 D1238 modified by use ofcorrosion-resistant alloy for the barrel lining, orifice, and piston
30、tip.11.3 Melting Endotherm PeakDetermine the melting en-dotherm peak in accordance with Test Method D4591. 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 a
31、s the melting point. Additionally, 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 D4591.11.3.1 The use of other thermal techniques, su
32、ch as differ-ential thermal 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 D792.11.5 Tensile PropertiesDetermine the tensile prop
33、erties inaccordance with Test Method D638 with the following excep-tions:11.5.1 Use the test specimen and die identified in TestMethod D1708 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 s
34、pecimenswith essentially 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 di
35、ameter in accor-dance with Test Methods D150. Testing shall be at 60 Hz and106Hz.11.7 Oxygen IndexDetermine the oxygen index in accor-dance with Test Method D2863.FIG. 1 Test Specimen and DieD3275 08 (2013)312. Inspection and Certification12.1 Inspection and certification of the material suppliedwit
36、h reference to a specification based on this classificationsystem shall be for conformance to the requirements specifiedherein.12.2 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 Pe
37、riodic check inspection with 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 Certificati
38、on shall be that the material 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 fur
39、nished when re-quested. The 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
40、to ensure accep-tance by 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
41、 marking provisions ofPractice D3892 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; powd
42、er coating; roto-lining ;roto-moldingASTM International takes no position 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 ri
43、skof infringement of such rights, are entirely their own responsibility.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 th
44、is standard or for additional standardsand should be addressed to ASTM 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
45、 your views known to the ASTM Committee on Standards, at the address 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D3275 08 (2013)4
