1、Designation: D3307 10D3307 16Standard Specification forPerfluoroalkoxy (PFA)-Fluorocarbon(PFA) Resin Moldingand Extrusion Materials1This standard is issued under the fixed designation D3307; the number immediately following the designation indicates the year oforiginal adoption or, in the case of re
2、vision, 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*1.1 This specif
3、ication covers melt processable molding and extrusion materials of PFA-perfluoro(alkoxy alkane) fluorocarbonPerfluoroalkoxy (PFA) resin. The materials are copolymers of TFE-fluorocarbon resins containing perfluoroalkoxy side chains.These materials were formerly the subject of this specification and
4、Specification tetrafluoroethylene and perfluoroalkoxy.D6314.1.2 This specification is intended to provide a means for calling out plastic materials used in the fabrication of end items or parts.It is not intended for the selection of materials. Material selection should be made by those having exper
5、tise in the plastics fieldafter careful consideration of the design and the performance required of the part, the environment to which it will be exposed,the fabrication process to be employed, the costs involved, and the inherent properties of the material other than those covered bythis specificat
6、ion.1.3 This specification does not cover recycled plastics.1.4 The tests involved are intended to provide information for identifying the materials covered. It is not the function of thisspecification to provide engineering data for design purposes. Specimens prepared by injection molding or extrus
7、ion could yieldtest results that may vary from the values in this specification.1.4 The values stated in SI units2 are to be regarded as standard. The values given in parentheses are for information only.1.5 The following precautionary caveat pertains only to the test methods portions, Sections 8 an
8、d 9 of this specification: 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 appropriate safety and health practices and determine the applicability of regulatory limitations priorto
9、 use.NOTE 1This specification, ISO 120861(2006), and ISO 120862(2006) differ in approach or detail. Data obtained using either may not be technicallyequivalent.2. Referenced Documents2.1 ASTM Standards:3D150 Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Ele
10、ctrical InsulationD618 Practice for Conditioning 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 Therm
11、oplastics by Extrusion PlastometerD1600 Terminology for Abbreviated Terms Relating to PlasticsD1708 Test Method for Tensile Properties of Plastics by Use of Microtensile SpecimensD2116 Specification for FEP-Fluorocarbon Molding and Extrusion Materials1 This specification is under the jurisdiction of
12、 ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materials(Section D20.15.12).Current edition approved July 1, 2010April 1, 2016. Published July 2010April 2016. Originally approved in 1974. Last previous edition approved in 20082010 asD3307 - 0
13、8.D3307 - 10. DOI: 10.1520/D3307-10.10.1520/D3307-16.2 As defined in Guide D5033.2 As defined in IEEE/ASTM SI-10.3 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
14、standards Document Summary page on the ASTM website.This document is not 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 accu
15、rately, ASTM recommends that users consult prior editions as appropriate. 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
16、 Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1D3892 Practice for Packaging/Packing of PlasticsD4591 Test Method for Determining Temperatures and Heats of Transitions of Fluoropolymers by Differential ScanningCalorimetryD4895 Specification for Polytetrafluoroethylene (PTFE) Res
17、in Produced From DispersionD5033 Guide for Development of ASTM Standards Relating to Recycling and Use of Recycled Plastics (Withdrawn 2007)5D6314 Specification for Fluorocarbon Perfluoromethoxy (MFA) Resin Molding and Extrusion Materials (Withdrawn 2002)5E177 Practice for Use of the Terms Precision
18、 and Bias in ASTM Test MethodsIEEE/ASTM SI-10 Standard for Use of the International System of Units (SI): The Modern Metric System2.2 ISO Standards:4ISO 120861 PlasticsFluoropolymer Dispersions and Moulding and Extrusion MaterialsPart 1ISO 120862 PlasticsFluoropolymer Dispersions and Moulding and Ex
19、trusion MaterialsPart 23. Terminology3.1 DefinitionsDefinitions are in accordance with Terminologies D883 and D1600.3.1.1 lot, none production run or a uniform blend of two or more productions runs.4. Classification4.1 This specification covers 1418 types of PFA-fluorocarbon resins supplied in pelle
20、t form for molding and extrusion.classifiedaccording to their melting points. The resins of each type are divided into two to four grades according to their melt flow rates.4.2 Aone-line system may be is used to specify materials covered by this specification. The system uses predefined cells to ref
21、erto specific aspects of this specification, illustrated as follows:SpecificationStandard Number : Type : Grade : Class : SpecialBlock : : : : Notes: : : : : Example: Specification D3307 06, IIn this standard, the only specifications are type; no grade or class is required. specifications are type a
22、nd grade. A comma isused as the separator between the standard number and the type.type, and a separator is not needed between the type and grade.55. General Requirements5.1 The materials shall be of uniform composition and so prepared as to conform to the requirements of this specification.5.2 The
23、materials described in this specification shall be free of foreign matter to such a contamination level as may be requiredin at the best commercially practical level.10.4.6. Detail Requirements6.1 The materials covered by this specification shall conform to the requirements prescribed in Table 1 and
24、 Table 2 when testedby the procedures specified herein. Table 2 lists those tests requiring a specimen molded as described in 9.1.7. Sampling7.1 Sampling shall be statistically adequate to satisfy the requirements of 10.4.8. Number of Tests8.1 One set of test specimens as prescribed in Section 9 sha
25、ll be considered sufficient for testing each sample. The average resultof the specimens tested shall conform to the requirements of this specification.9. Test Methods9.1 Test Specimens:9.1.1 Prepare a molded sheet 1.50 6 0.25-mm (0.0606 0.010-in.) thick. Use a picture-frame-type chase having a suita
26、bleblanked-out section and thickness to produce the desired sheet. Use clean aluminum foil, 0.13 to 0.18 mm (0.005 to 0.007 in.)thick, in contact with the resin. A high temperature mold release agent may be sprayed on the aluminum foil helps to help preventthe foil from sticking to the sheet. Use st
27、eel molding plates at least 1.0 mm (0.040 in.) thick and of an area adequate to cover thechase.4 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.5 See ASTM Form and Style Manual.D3307 162TABLE 1 Detail Requirements for Te
28、st on Molding and Extrusion MaterialsTypeITypeIITypeIIITypeIVTypeVTypeVITypeVIITypeVIIITypeIXTypeXTypeXITypeXIITypeXIIITypeXIVMelt flow,A g/10min:min 7 1 3 10 1 3 10 2 24 1 $4 $8 $18 $63max 19 3 7 30 3 10 17 5 #50 4 8 18 40 81Melting endotherm peaktemperature,Bmin, C300 300 300 285 285 285 280 280 3
29、00 265 265 265 265 290TABLE 1 Detail Requirements for Test on Molding and Extrusion MaterialsTypeITypeIITypeIIITypeIVTypeVTypeVITypeVIITypeVIIITypeIXTypeXTypeXITypeXIITypeXIIITypeXIVTypeXVTypeXVITypeXVIITypeXVIIIMelt flow,A g/10min:min 7 1 3 10 1 3 10 2 24 1 $4 $8 $18 $63 1 2.5 5 9max 19 3 7 30 3 10
30、 17 5 #50 4 8 18 40 81 2.5 5 9 13Melting endotherm peaktemperature,Bmin, C300 300 300 285 285 285 280 280 300 265 265 265 265 290 311 311 311 311ASee 9.3 of this specification.BSee 9.4 of this specification.D3307163TABLE 2 Detailed Requirements for Molded SpecimensTypeITypeIITypeIIITypeIVTypeVTypeVI
31、TypeVIITypeVIIITypeIXTypeXTypeXITypeXIITypeXIIITypeXIVTensile 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, %A 275 300 275 275 260
32、 275 275 300 275 275 275 275 275 230Note: The following properties are the same for all types except as noted.Specific gravity, 23C(73.4F):B All 2.12-2.17Dielectric constant, max:C All 2.2 at 102 Hz and 106 HzDissipation factor, max:C102 All 0.0003106 All 0.0005 except Type 7, which is 0.0003TABLE 2
33、 Detailed Requirements for Molded SpecimensTypeITypeIITypeIIITypeIVTypeVTypeVITypeVIITypeVIIITypeIXTypeXTypeXITypeXIITypeXIIITypeXIVTypeXVTypeXVITypeXVIITypeXVIIITensile 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 20.00 25.00 25.00 20.
34、00 20.00psi 3000 3625 3000 3300 3700 3300 3000 3800 3000 3000 3000 3000 2500 2900 3625 3625 2900 2900Elongation, 23C (73.4F),min, %A 275 300 275 275 260 275 275 300 275 275 275 275 275 230 300 300 200 200Note: The following properties are the same for all types except as noted.Specific gravity, 23C(
35、73.4F):B All 2.12-2.17Dielectric constant, max:C All 2.2 at 102 Hz and 106 HzDissipation factor, max:C102 All 0.0003106 All 0.0005 except Type 7, which is 0.0003ASee 9.6 of this specification.BSee 9.5 of this specification.CSee 9.7 of this specification.D33071649.1.2 Lay down and smoothly cover one
36、plate with a sheet of aluminum foil. a sheet of aluminum foil down to smoothly coverone plate. Place the mold chase on top of this assembly. Place within the mold chase sufficient molding material to produce therequired sheet in such manner that the polymer charge is a mound in the middle of the cha
37、se. Place a second sheet of aluminumfoil on top of the granules and add the top mold plate. Place the assembly in a compression molding press having platens that havebeen heated to 380 6 5C (716 6 10F).9.1.3 Bring the press platens to incipient contact with the mold assembly. Hold for 2 to 4 min wit
38、hout pressure. Applyapproximately 1 MPa (145 psi) and hold for 1 to 1.5 min. Then apply 2 to 4 MPa (290 to 580 psi) and hold for 1 to 1.5 min.Maintain the press at 380 6 5C (716 6 10F) during these steps. Remove the assembly from the press and place between two20 6 7-mm (0.75 6 0.25-in.) steel plate
39、s whose temperature is less than 40C (104F).9.1.4 When the sheet is cool enough to touch (about 50 to 60C (122 to 140F), remove the aluminum foil from the sheet. (Ifthe sheet is allowed to cool to room temperature, the aluminum foil cannot be pulled free.)9.2 Conditioning:9.2.1 For tests of specific
40、 gravity, tensile properties, and electrical properties, condition the molded test specimens in accordancewith Procedure A of Practice D618 for a period of at least 4 h prior to test. The other tests require no conditioning.9.2.2 Conduct tests at the Standard Laboratory Temperature of 23 6 2C (73.4
41、6 3.6F) for determination of specific gravity,tensile properties, and electrical properties only. Since the resin does not absorb water, the maintenance of constant humidity duringtesting is not necessary. Conduct tests for melt flow rate and melting endotherm under ordinary laboratory conditions.9.
42、3 Melt Flow RateDetermine the melt flow rate in accordance with Test Method D1238, Test Method A or B, with atemperature of 372 6 1C and using a total load, including piston, of 5000 g. The same requirements apply for the use ofcorrosion-resistant alloy for the barrel lining, orifice, and piston tip
43、.9.4 Melting Endotherm Peak Temperature:9.4.1 Determine the melting endotherm peak temperature using techniques Use differential scanning calorimetry (DSC) asdescribed in Test Method D4591 and Specificationfor this D4895. Place a 20-mg specimen in a 4-mm tube with a thermocouple.Premelt the specimen
44、 at 325C, and push the thermocouple into intimate contact with the melt. Cool determination. Forspecification purposes, the test shall be run on a 10 6 2-mg specimen cut from a pellet of the resin as sold or received. The heatingrate shall be run at 10 6 1C (18 6 1.8F)/min to 350C (626F). Two peaks
45、during the initial melting test are observedoccasionally. In this case, the peak temperatures shall be reported as Tlthe sample in air. Run for the lower temperature and Tu thedifferential thermal analysis at 10C/min with glass beads as a reference to a maximum temperature of 350C. Extend straight l
46、inesdown tangent to bothfor the upper temperature. The peak temperature of the peak largest in height shall be reported as the meltingpoint if a single value is required. If a peak temperature is difficult to discern from the curves, that is, if the peak is rounded ratherthan pointed, straight lines
47、 shall be drawn tangent to the sides of the melting endotherm, and take the temperature at which thelines intersect (peak minimum) as the melting endotherm peak. The temperature corresponding to the point where these linesintersect beyond the peak shall be taken as the peak temperature.9.4.2 Precisi
48、onThe single instrument precision of the differential thermal analysis applied to this material is 61.2C (2S) asdefined in Practice E177.9.5 Specific GravityCut two specimens from the compression molded sheet and test in accordance with Test Method D792.9.6 Tensile PropertiesCut five specimens with
49、the microtensile die shown in Fig. 1, which is exactly the same as Fig. 1 ofTest Method D1708.The die shall be of the steel-rule type of curvature of 560.5-mm (0.2060.02-in.) type. Determine the tensileproperties in accordance with the procedures described in Test Method D638, except that the specimens used shall be as detailedabove, the initial jaw separation shall be 22 6 0.13 mm (0.866 6 0.005 in.), and the speed of testing shall be 50 mm/min (2in./min). Clamp the specimens with essentially equ
