1、Designation: D3275 08 (Reapproved 2013)D3275 18Standard 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
2、 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.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope Scop
3、e*1.1 This classification system covers melt processible molding, extrusion, and coating materials of ethylene-chlorotrifluoroethylene (E-CTFE) fluoroplastics. The resin is a copolymer of ethylene and chlorotrifluoroethylene containingapproximately 80 weight % of chlorotrifluoroethylene.1.2 The valu
4、es stated in SI units, as detailed in IEEE/ASTM SI-10, are to be regarded as standard.1.3 The following precautionary statement pertains only to the test methods portion, Section 11 of this classification system.This standard does not purport to address all of the safety concerns, if any, associated
5、 with its use. It is the responsibility of theuser of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine theapplicability of regulatory limitations prior to use.NOTE 1Although this classification system and ISO 12086-1ISO 20568-1 and ISO 120
6、86-2ISO 20568-2 differ in approach or detail, data obtainedusing either are technically equivalent.1.4 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International S
7、tandards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D150 Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical InsulationD618 Practice for Condi
8、tioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by DisplacementD883 Terminology Relating to PlasticsD1238 Test Method for Melt Flow Rates of Thermoplastics by Extrusion PlastometerD1600 T
9、erminology for Abbreviated Terms Relating to PlasticsD1708 Test Method for Tensile Properties of Plastics by Use of Microtensile SpecimensD2863 Test Method for Measuring the Minimum Oxygen Concentration to Support Candle-Like Combustion of Plastics(Oxygen Index)D3892 Practice for Packaging/Packing o
10、f PlasticsD4591 Test Method for Determining Temperatures and Heats of Transitions of Fluoropolymers by Differential ScanningCalorimetryIEEE/ASTM SI-10 Use of the International System of Units (SI): The Modern Metric System2.2 ISO Standards:3ISO 12086-1ISO 20568-1 PlasticsFluoropolymer Dispersion and
11、 Moulding and Extrusion MaterialsPart 1: Designation andBasis for Specification1 This classification system is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterialsCurrent edition approved May 1, 2013Nov. 1, 2018. P
12、ublished May 2013November 2018. Originally approved in 1973. Last previous edition approved in 20082013 asD3275 - 08.D3275 - 08(2013). DOI: 10.1520/D3275-08R13.10.1520/D3275-18.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. Fo
13、r Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.This document is not an ASTM standard and is intended o
14、nly 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. In all cases only the current ver
15、sionof 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 States1ISO 12086-2ISO 20568-2 PlasticsFluorop
16、olymer Dispersion and Moulding and Extrusion MaterialsPart 2: Preparation ofTest Specimens and Determination of Properties3. Terminology3.1 Definitions:3.1.1 Definitions of terms used in this classification system shall be in accordance with Terminology D883.3.1.2 lot, none production run or a unifo
17、rm blend of two or more production runs.3.2 Abbreviations:3.2.1 Abbreviations are in accordance with Terminology D1600.4. Classification4.1 ECTFE materials are classified into groups in accordance with their physical appearance.The groups are further divided intoclasses based on melt flow rate. Thes
18、e classes are subdivided into grades as shown in the Table E-CTFE.An example of a materialof this classification system is given as follows: ECTFE 01 1 1TABLE ECTFEGroup Class Description Grade Melt FlowRate,A,Bg/10 minSpecificGravity,C23/23CTensileStrength,D,Emin, MPaElongation,E,Fmin, %MeltingPoin
19、t, C,GminOxygenIndex,Hmin, %DielectricConstant,Imax, 106 HzDissipationFactor,Jmax, 106 Hz01 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 pel
20、let 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 0.0154 Ultra Lowmelt flowrate1 0.81.3 1.651.71 40 200 220 52 2.6 0.0150 Other 000 0 Other 0A See 11.2 for test meth
21、od 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.C See 11.4 for test method for above parameters.D See 11.5 for test method for above parameters.E At 23 2C (73.4 3.6F).F See 11.5 for test method for above parameters.G See 11.3 for test
22、 method for above parameters.H See 11.7 for test method for above parameters.I See 11.6 for test method for above parameters.J See 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 incorporati
23、on of future material, the other category for Group (00), Class (0) and Grade (0) are shown inTableE-CTFE.5. Ordering Information5.1 The purchase order or inquiry for these materials shall state the classification callout. For example, D3275 ECTFE 01 1 2.6. General Requirements6.1 The material cover
24、ed by this classification system shall conform 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 10 shall conform to the requirements prescribed for the particular class.D3275 1828
25、. Sampling8.1 Sampling must be statistically adequate to satisfy the requirements of 12.4.9. Number of Tests9.1 One set of test specimens as prescribed in Section 11 shall be considered sufficient for testing each sample. The averageresult of the specimens tested shall conform to the requirements of
26、 this classification system.10. Specimen Preparation10.1 Test 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 (0.015 to 0.020 in.) thickchromium-plated ferrotype plates. Use a “picture frame” type compression molding chase with inner dimensi
27、ons of 178 by 178mm (7 by 7 in.) and having a thickness suitable to produce the required molded sheet. Use a charge of resin sufficient to providethe thickness sheet specified.10.1.2 Place the mold chase on top of a chromium-plated ferrotype plate. Charge a quantity of resin sufficient to produce a3
28、.18 6 0.30-mm (0.125 6 0.012-in.) sheet in a diagonal pattern from corner to corner forming an “X” pattern. Place the otherchromium-plated ferrotype plate on top of the resin charge and place the assembly in a compression molding press which has beenheated to 264 6 3C (507 6 5.4F).Apply a pressure o
29、f 0.34 MPa (50 psi) and hold for 4 min. Increase pressure to 1.72 MPa (250psi) and hold for 1 min followed by increasing the pressure to not less than 2.24 MPa (325 psi) and holding for 5 min. Removethe chase assembly from the press and immediately quench it in an ice-water bath, vigorously agitatin
30、g the chase. Remove theferrotype plates, keeping the chase and molded sheet in the ice water bath until quenching is complete.11. Test Methods11.1 Conditioning:11.1.1 For tests of specific gravity, tensile properties, oxygen index, and electrical properties, condition the molded testspecimens in acc
31、ordance with Procedure A of Practice D618, with the exception that only 4-h conditioning is required.11.1.2 Conduct tests at the standard laboratory temperatures of 23 6 2C (73.4 6 3.6F) for determination of specific gravity,tensile properties, and electrical properties. Since the resin does not abs
32、orb water, the maintenance of constant humidity duringtesting is not necessary. Conduct tests for melt flow rate, oxygen index, and melting endotherm under ordinary laboratoryconditions.11.2 Melt Flow RateDetermine the melt flow rate in accordance with Test Method D1238 modified by use of corrosion-
33、resistant alloy for the barrel lining, orifice, and piston tip.11.3 Melting Endotherm PeakDetermine the melting endotherm peak in accordance withTest Method D4591. For instrumentscapable of digital data processing of the melting endotherm curve, the peak maximum, as determined by the point on the cu
34、rvefor which the tangent has zero slope, will be reported as the melting point. Additionally, the heat of fusion and recrystallizationwill be reported directly from the display of the data processing equipment provided that the instrument has been calibrated witha standard material as defined in Tes
35、t Method D4591.11.3.1 The use of other thermal techniques, such as differential thermal analysis (DTA), capable of measuring the meltingendotherm peak and giving equivalent results, is allowed.11.4 Specific GravityCut two specimens from the compression molded sheet and test in accordance with Test M
36、ethods D792.11.5 Tensile PropertiesDetermine the tensile properties in accordance with Test Method D638 with the following exceptions:11.5.1 Use the test specimen and die identified in Test Method D1708 and shown in Fig. 1. The initial jaw separation shall be22.2 6 0.13 mm (0.875 6 0.005 in.), and t
37、he speed of testing shall be 51 mm/min (2 in./min). Clamp the specimens withessentially equal lengths in each jaw. Determine the elongation from the chart, expressing it as a percentage of the initial jawseparation.11.6 Dielectric Constant and Dissipation FactorDetermine the dielectric constant and
38、dissipation factor on three specimens,each 50.8 mm (2 in.) in diameter in accordance with Test Methods D150. Testing shall be at 60 Hz and 106 Hz.11.7 Oxygen IndexDetermine the oxygen index in accordance with Test Method D2863.12. Inspection and Certification12.1 Inspection and certification of the
39、material supplied with reference to a specification based on this classification systemshall be for conformance to the requirements specified herein.12.2 Lot-acceptance shall be the basis on which acceptance or rejection of the lot is made. The lot-acceptance inspection shallconsist of melt flow rat
40、e determination.12.3 Periodic check inspection with reference to a specification based on this classification system shall consist of the tests forall requirements of the material under the specification. Inspection frequency shall be adequate to insure the material is certifiablein accordance with
41、12.4.D3275 18312.4 Certification shall be that the material was manufactured by a process in statistical control, sampled, tested, and inspectedin accordance with this classification system, and that the average values for the lot meet the requirements of the specification (linecallout).12.5 Areport
42、 of test results shall be furnished when requested.The report shall consist of results of the lot-acceptance inspectionfor the shipment and the results of the most recent periodic-check inspection.13. Packaging and Package Marking13.1 PackagingThe material shall be packaged in standard commercial co
43、ntainers so constructed as to ensure acceptance bycommon or other carriers for safe transportation to the point of delivery unless otherwise specified in the contract or order.13.2 MarkingShipping containers shall be marked with the name of the material, type, or melt index, and quantity therein.13.
44、3 All packing, packaging, and marking provisions of Practice D3892 shall apply to this classification system.14. Keywords14.1 chlorotrifluoroethylene copolymers; chlorotrifluoro- ethylene-ethylene copolymers; E-CTFE; extrusion material; fluoropo-lymer; fluoropolymers; melt flow; melt-processible flu
45、oropolymer; molding material; powder coating; roto-lining ; roto-moldingFIG. 1 Test Specimen and DieD3275 184SUMMARY OF CHANGESCommittee D20 has identified the location of selected changes to this standard since the last issue(D327508(2013) that may impact the use of this standard. (November 1, 2018
46、)(1) Changed “ISO 12086-1 and ISO 12086-2” to “ISO 20568-1 and ISO 20568-2” in Note 1.(2) Changed “ISO 12086-1” to “ISO 20568-1, and changed “ISO 12086-2” to “ISO 20568-2” in 2.2.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item me
47、ntionedin 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 responsibility.This standard is subject to revision at any time by the responsible technical committe
48、e 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 ASTM International Headquarters. Your comments will receive careful consideration at a meetin
49、g 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 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
