ASTM D3307-2008 Standard Specification for Perfluoroalkoxy (PFA)-Fluorocarbon Resin Molding and Extrusion Materials.pdf

1、Designation: D 3307 08Standard Specification forPerfluoroalkoxy (PFA)-Fluorocarbon Resin Molding andExtrusion Materials1This standard is issued under the fixed designation D 3307; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the

2、 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. Scope*1.1 This specification covers m

3、elt processable molding andextrusion materials of PFA-perfluoro(alkoxy alkane) fluorocar-bon resin. The materials are copolymers of TFE-fluorocarbonresins containing perfluoroalkoxy side chains. These materialswere formerly the subject of this specification and Specifica-tion D 6314.1.2 This specifi

4、cation is intended to provide a means forcalling out plastic materials used in the fabrication of end itemsor parts. It is not intended for the selection of materials.Material selection should be made by those having expertise inthe plastics field after careful consideration of the design andthe per

5、formance required of the part, the environment to whichit will be exposed, the fabrication process to be employed, thecosts involved, and the inherent properties of the material otherthan those covered by this specification.1.3 This specification does not cover recycled plastics.21.4 The tests invol

6、ved are intended to provide informationfor identifying the materials covered. It is not the function ofthis specification to provide engineering data for design pur-poses. Specimens prepared by injection molding or extrusioncould yield test results that may vary from the values in thisspecification.

7、1.5 The values stated in SI units3are to be regarded asstandard. The values given in parentheses are for informationonly.1.6 The following precautionary caveat pertains only to thetest methods portions, Sections 8 and 9 of this specification:This standard does not purport to address all of the safet

8、yconcerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.NOTE 1This specification, ISO 120861(2006), andISO 120862(2006) differ in approac

9、h or detail. Data obtained usingeither may not be technically equivalent.2. Referenced Documents2.1 ASTM Standards:4D 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 Met

10、hod for Tensile Properties of PlasticsD 792 Test Methods for 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 Rela

11、ting toPlasticsD 1708 Test Method for Tensile Properties of Plastics byUse of Microtensile SpecimensD2116 Specification for FEP-Fluorocarbon Molding andExtrusion MaterialsD 3892 Practice for Packaging/Packing of PlasticsD 4591 Test Method for Determining Temperatures andHeats of Transitions of Fluor

12、opolymers by DifferentialScanning CalorimetryD 4895 Specification for Polytetrafluoroethylene (PTFE)Resin Produced From DispersionD 5033 Guide for Development of ASTM Standards Relat-ing to Recycling and Use of Recycled Plastics5D 6314 Specification for Fluorocarbon Perfluoromethoxy(MFA) Resin Moldi

13、ng and Extrusion Materials5E 177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsIEEE/ASTM SI 10 Standard for Use of the InternationalSystem of Units (SI): The Modern Metric System1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct res

14、ponsibility of Subcommittee D20.15 on ThermoplasticMaterials (Section D20.15.12).Current edition approved Nov. 1, 2008. Published November 2008. Originallyapproved in 1974. Last previous edition approved in 2006 as D 3307 - 06.2As defined in Guide D 5033.3As defined in IEEE/ASTM SI 10.4For reference

15、d 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 website.5Withdrawn. The last approved version of this historical standard is refere

16、ncedon www.astm.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, United States.2.2 ISO Standards:6ISO 120861 PlasticsFluoropolymer Dispersions andMoulding and Extrusion Materials

17、Part 1ISO 120862 PlasticsFluoropolymer Dispersions andMoulding and Extrusion MaterialsPart 23. Terminology3.1 DefinitionsDefinitions are in accordance with Termi-nologies D 883 and D 1600.3.1.1 lot, none production run or a uniform blend of twoor more productions runs.4. Classification4.1 This speci

18、fication covers 14 types of PFA-fluorocarbonresins supplied in pellet form for molding and extrusion.4.2 A one-line system may be used to specify materialscovered by this specification. The system uses predefined cellsto refer to specific aspects of this specification, illustrated asfollows:Specific

19、ationStandard Number :Type : Grade :Class : SpecialBlock : : : : Notes: : : Example: Specification D 3307 06, IIn this standard, the only specifications are type; no grade orclass is required. A comma is used as the separator between thestandard number and the type.75. General Requirements5.1 The ma

20、terials shall be of uniform composition and soprepared as to conform to the requirements of this specifica-tion.5.2 The materials described in this specification shall be freeof foreign matter to such a contamination level as may berequired in 10.4.6. Detail Requirements6.1 The materials covered by

21、this specification shall con-form to the requirements prescribed in Table 1 and Table 2when tested by the procedures specified herein. Table 2 liststhose tests requiring a specimen molded as described in 9.1.7. Sampling7.1 Sampling shall be statistically adequate to satisfy therequirements of 10.4.8

22、. Number of Tests8.1 One set of test specimens as prescribed in Section 9shall be considered sufficient for testing each sample. Theaverage result of the specimens tested shall conform to therequirements of this specification.9. Test Methods9.1 Test Specimens:9.1.1 Prepare a molded sheet 1.50 6 0.25

23、-mm (0.06060.010-in.) thick. Use a picture-frame-type chase having asuitable blanked-out section and thickness to produce thedesired sheet. Use clean aluminum foil, 0.13 to 0.18 mm (0.005to 0.007 in.) thick, in contact with the resin.Ahigh temperaturemold release agent may be sprayed on the aluminum

24、 foil tohelp prevent the foil from sticking to the sheet. Use steelmolding plates at least 1.0 mm (0.040 in.) thick and of an areaadequate to cover the chase.9.1.2 Lay down and smoothly cover one plate with a sheetof aluminum foil. Place the mold chase on top of this assembly.Place within the mold c

25、hase sufficient molding material toproduce the required sheet in such manner that the polymercharge is a mound in the middle of the chase. Place a secondsheet of aluminum foil on top of the granules and add the topmold plate. Place the assembly in a compression molding presshaving platens that have

26、been heated to 380 6 5C (716 610F).9.1.3 Bring the press platens to incipient contact with themold assembly. Hold for 2 to 4 min without pressure. Applyapproximately 1 MPa (145 psi) and hold for 1 to 1.5 min. Thenapply 2 to 4 MPa (290 to 580 psi) and hold for 1 to 1.5 min.Maintain the press at 380 6

27、 5C (716 6 10F) during thesesteps. Remove the assembly from the press and place betweentwo 20 6 7-mm (0.75 6 0.25-in.) steel plates whose tempera-ture is less than 40C (104F).9.1.4 When the sheet is cool enough to touch (about 50 to60C (122 to 140F), remove the aluminum foil from thesheet. (If the s

28、heet is allowed to cool to room temperature, thealuminum foil cannot be pulled free.)9.2 Conditioning:9.2.1 For tests of specific gravity, tensile properties, andelectrical properties, condition the molded test specimens inaccordance with Procedure A of Practice D 618 for a period ofat least 4 h pri

29、or to test. The other tests require no conditioning.6Available from the American National Standards Institute, 25 W. 43rd St., 4thFloor, New York, NY 10036.7See ASTM Form and Style Manual.TABLE 1 Detail Requirements for Test on Molding and Extrusion MaterialsTypeITypeIITypeIIITypeIVTypeVTypeVITypeVI

30、ITypeVIIITypeIXTypeXTypeXITypeXIITypeXIIITypeXIVMelt flow,Ag/10min:min 7 1 3 10 1 3 10 2 24 1 $4 $8 $18 $63max 19 3 7 30 3 10 17 5 #40 4 8 18 40 81Melting endotherm peaktemperature,Bmin, C300 300 300 285 285 285 280 280 300 265 265 265 265 290ASee 9.3 of this specification.BSee 9.4 of this specifica

31、tion.D33070829.2.2 Conduct tests at the Standard Laboratory Temperatureof 23 6 2C (73.4 6 3.6F) for determination of specificgravity, tensile properties, and electrical properties only. Sincethe resin does not absorb water, the maintenance of constanthumidity during testing is not necessary. Conduct

32、 tests for meltflow rate and melting endotherm under ordinary laboratoryconditions.9.3 Melt Flow RateDetermine the melt flow rate inaccordance with Test Method D 1238, Test Method A or B,with a temperature of 372 6 1C and using a total load,including piston, of 5000 g. The same requirements apply fo

33、rthe use of corrosion-resistant alloy for the barrel lining, orifice,and piston tip.9.4 Melting Endotherm Peak Temperature:9.4.1 Determine the melting endotherm peak temperatureusing techniques in Test Method D 4591 and SpecificationD 4895. Place a 20-mg specimen in a 4-mm tube with athermocouple. P

34、remelt the specimen at 325C, and push thethermocouple into intimate contact with the melt. Cool thesample in air. Run the differential thermal analysis at 10C/minwith glass beads as a reference to a maximum temperature of350C. Extend straight lines down tangent to both sides of themelting endotherm,

35、 and take the temperature at which the linesintersect (peak minimum) as the melting endotherm peaktemperature.9.4.2 PrecisionThe single instrument precision of thedifferential thermal analysis applied to this material is 61.2C(2S) as defined in Practice E 177.9.5 Specific GravityCut two specimens fr

36、om the compres-sion molded sheet and test in accordance with Test MethodD 792.9.6 Tensile PropertiesCut five specimens with the micro-tensile die shown in Fig. 1, which is exactly the same as Fig.1 of Test Method D 1708. The die shall be of the steel-rule typeof curvature of 5 6 0.5-mm (0.20 6 0.02-

37、in.) type. Determinethe tensile properties in accordance with the procedures de-scribed in Test Method D 638, except that the specimens usedshall be as detailed above, the initial jaw separation shall be 226 0.13 mm (0.866 6 0.005 in.), and the speed of testing shallbe 50 mm/min (2 in./min). Clamp t

38、he specimens with essen-tially equal lengths in each jaw. Determine the elongation fromthe chart, expressing it as a percentage of the initial jawseparation. Details appear in the Tensile Properties section ofSpecification D2116.9.7 Dielectric Constant and Dissipation FactorDetermine dielectric cons

39、tant and dissipation factor on threespecimens, each 101.6 mm (4 in.) in diameter in accordancewith Test Methods D 150. Testing shall be at 102Hz and 106Hz.10. Inspection and Certification10.1 Inspection and certification of the material suppliedwith reference to a specification based on this classif

40、icationsystem shall be for conformance to the requirements specifiedherein.10.2 Lot-acceptance shall be the basis on which acceptanceor rejection of the lot is made. The lot acceptance inspectionshall consist of melting endotherm peak temperature and meltflow rate.10.3 Periodic check inspection with

41、 reference to a specifi-cation based on this classification system shall consist of thetest for all requirements of the material in accordance with thisspecification.10.4 Certification shall be that the material was manufac-tured by a process in statistical control, sampled, tested, andinspected in

42、accordance with this classification system, andthat the average values for the lot meet the requirements of thisspecification.10.5 A report of test results shall be furnished when re-quested. The report shall consist of results of the lot-acceptanceinspection for the shipment and the results of the

43、most recentperiodic-check inspection.11. Packaging and Package Marking11.1 All packing, packaging, and marking provisions ofPractice D 3892 shall apply to this specification.TABLE 2 Detailed Requirements for Molded SpecimensTypeITypeIITypeIIITypeIVTypeVTypeVITypeVIITypeVIIITypeIXTypeXTypeXITypeXIITy

44、peXIIITypeXIVTensile strength, min, 23C(73.4F):AMPa 20.68 25.00 20.68 22.75 25.51 22.75 20.68 26.20 20.68 20.68 20.68 20.68 17.24 20.00psi 3000 3625 3000 3300 3700 3300 3000 3800 3000 3000 3000 3000 2500 2900Elongation, 23C (73.4F),min, %A275 300 275 275 260 275 275 300 275 275 275 275 275 230Note:

45、The following properties are the same for all types except as noted.Specific gravity, 23C(73.4F):BAll 2.12-2.17Dielectric constant, max:CAll 2.2 at 102Hz and 106HzDissipation factor, max:C102All 0.0003106All 0.0005 except Type 7, which is 0.0003ASee 9.6 of this specification.BSee 9.5 of this specifi

46、cation.CSee 9.7 of this specification.D330708312. Keywords12.1 extrusion; injection molding; fluoropolymer, perfluo-roalkoxy; PFA-fluorocarbon resin; tetrafluoroethylene copoly-mer; TFE-fluorocarbonNOTE 1All dimensions are in millimetres.FIG. 1 Microtensile Die and Test SpecimenD3307084SUMMARY OF CH

47、ANGESCommittee D20 has identified the location of selected changes to this standard since the last issue,D 3307 - 06, that may impact the use of this standard. (November 1, 2008)(1) Added a new type to Table 1 and Table 2.ASTM International takes no position respecting the validity of any patent rig

48、hts 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 responsibility.This standard is subject to revision at any

49、 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 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 your views known to the AST