1、Designation: D3368 14Standard Specification forFEP-Fluorocarbon Sheet and Film1This standard is issued under the fixed designation D3368; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parent
2、heses 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 specification covers unfilled, unpigmented FEP-fluorocarbon
3、 resin sheet and film less than 3.175 mm (0.125in.) thick. Recycled materials are allowed in accordance with6.2.1.2 The values stated in SI units as detailed in IEEE/ASTMSI 10 are to be regarded as standard and the practices ofIEEE/ASTM SI 10 incorporated herein.1.3 The following safety hazards cave
4、at pertains only to thetest methods portion, Section 14, 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 healthpractices and determine t
5、he applicability of regulatory limita-tions prior to use.NOTE 1There is no known ISO equivalent to this standard.2. Referenced Documents2.1 ASTM Standards:2D149 Test Method for Dielectric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power Frequencies
6、D374 Test Methods for Thickness of Solid Electrical Insu-lation (Withdrawn 2013)3D618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD792 Test Methods for Density and Specific Gravity (Rela-tive Density) of Plastics by DisplacementD882 Test Method fo
7、r Tensile Properties of Thin PlasticSheetingD883 Terminology Relating to PlasticsD2116 Specification for FEP-Fluorocarbon Molding andExtrusion MaterialsD3892 Practice for Packaging/Packing of PlasticsD5740 Guide for Writing Material Standards in the Classi-fication FormatE691 Practice for Conducting
8、 an Interlaboratory Study toDetermine the Precision of a Test MethodIEEE/ASTM SI 10 Standard for Use of the InternationalSystem of Units (SI)2.2 Other Standard:TAPPI 411 Standard Thickness (Caliper) of Paper and PaperProducts43. Terminology3.1 Definitions:3.1.1 For definitions of terms used in this
9、specification, seeTerminology D883.3.1.2 lot, none production run or a uniform blend of twoor more production runs.4. Classification4.1 This specification covers four types of FEP-fluorocarbon sheet and film:4.1.1 Type IGeneral purpose.4.1.2 Type IICementable film. Type II materials can besubdivided
10、 into two grades:4.1.2.1 Grade 1One side cementable, and4.1.2.2 Grade 2Two sides cementable.4.1.3 Type IIISpecial film for applications requiring un-usual flexural endurance or extreme thermal and chemicalservice.4.1.4 Type IVFilm for mold release applications.4.2 A line callout system is used to sp
11、ecify materials in thisstandard. The system uses predefined cells to refer to specificaspects of this specification, which are illustrated as follows:1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on Thermoplasti
12、cMaterials D20.15.12 on Fluoropolymers.Current edition approved March 1, 2014. Published March 2014. Originallyapproved in 1975. Last previous edition approved in 2010 as D3368 - 04(2010).DOI: 10.1520/D3368-14.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Custo
13、mer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from Technical Association of the Pulp and Paper Industr
14、y (TAPPI),15 Technology Parkway South, Norcross, GA 30092, http:/www.tappi.org.*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 States1SpecificationStandard NumberBlockType Grad
15、e Class SpecialNotes|Example: SpecificationD3368 XX,II 1 , 0.051 mm thickFor this example, the line callout would be SpecificationD3368 XX, II 1, 0.051 mm thick. This callout specifies a filmof FEP that is cementable on one side and that has all of theproperties listed for that type and grade in the
16、 appropriatespecified properties or tables, or both, in this specification.Inclusion of a class is provided for in the system, but is notused in this particular specification. A comma is used as theseparator between the standard number and the type. Separa-tors are not needed between the type, grade
17、, and class.5Provision for special notes is included in the system so thatother information can be provided when required, in this case,the thickness of the film. When special notes are used, theyshall be preceded by a comma.5. Ordering Information5.1 The sheet and film shall be furnished in the for
18、m ofsheets or rolls in accordance with good commercial practice.Rolls shall be wound evenly and tightly on substantial coressuitably restrained to prevent unwinding.5.2 Dimensions of sheet and film with respect to length,width, and core diameter shall be upon agreement between thepurchaser and the m
19、anufacturer. The agreement shall applyalso to the maximum number of splices per roll and tolerancesfor length and core.5.3 Requests for certification or test results shall be made atthe time of order placement.6. Materials and Manufacture6.1 The sheet and film shall be made from FEP-fluorocarbon res
20、in as specified in Specification D2116 withoutfiller or plasticizer.6.2 This specification allows for the use of recycled,reprocessed, and reworked FEP materials provided the follow-ing:6.2.1 The final physical, mechanical, and performance re-quirements as stated in this specification are met.6.2.2
21、The toxicological characteristics are essentially unal-tered from that of virgin material.7. Other Requirements7.1 The sheet and film shall conform to the physical,mechanical, and performance property requirements specifiedin Table 1.The nominal thickness of sheet or film and thicknesstolerances sha
22、ll be in accordance with Table 2.7.2 The film and sheet shall be uniform in appearance andshall be sufficiently free of contamination, wrinkles, holes,scratches, and other imperfections so as to be functionallyacceptable. The color shall be uniform and be characteristic ofunpigmented sheet or film t
23、hat ranges from clear to translucentand is dependent upon the thickness.5See the ASTM Form and Style Manual. Available from ASTM Headquarters.TABLE 1 Detail Requirements for Property ValuesType I Type II Type III Type IVTensile Strength, min, MPa (psi), at nominal thickness, mm (in.):0.0127 (0.0005)
24、 13.8 (2000) 13.8 (2000) . 11.0 (1600)0.025 to 3.175 (0.001 to 0.125) 17.2 (2500) 17.2 (2500) 17.2 (2500) 14.5 (2100)Elongation at Break, min, %, at nominal thickness, mm (in.):0.0127 to 0.025 (0.0005 to 0.001) 175 175 . 1500.051 to 3.175 (0.002 to 0.125) 250 250 250 250Dimensional Change on Heating
25、, max, %, at nominal thickness, mm (in.):0.0127 to 0.025 (0.0005 to 0.001) 5 5 . 50.051 (0.002) 3 3 4 30.076 to 0.508 (0.003 to 0.020) 2 2 3 .0.762 to 1.524 (0.030 to 0.060) . . 4 .2.285 to 3.175 (0.090 to 0.125) . . 5 .Cementability, min, peel strength, kg/m (g/in.), at nominal thickness, mm (in.):
26、0.0127 (0.0005) . 6.69 (170) . .0.025 (0.001) . 11.8 (300) . .0.051 (0.002) . 29.5 (750) . .0.076 (0.003) . 31.5 (800) . .0.102 (0.004) . 47.2 (1200) . .0.127 (0.005) . 78.7 (2000) . .0.254 (0.010) . 94.5 (2400) . .0.508 (0.020) . 94.5 (2400) . .Dielectric Strength, min, kV/mm (V/mil), at nominal th
27、ickness, mm (in.):0.0127 to 0.025 (0.0005 to 0.001) 157 (4000) 157 (4000) . .0.051 (0.002) 138 (3500) 138 (3500) . .0.076 (0.003) 118 (3000) 118 (3000) . .0.102 (0.004) 108 (2750) 108 (2750) . .0.127 (0.005) 98 (2500) 98 (2500) . .0.254 (0.010) 71 (1800) 71 (1800) . .0.356 (0.014) 63 (1600) 63 (1600
28、) . .0.508 (0.020) 55 (1400) 55 (1400) . .Density at 23C, g/cm32.13 to 2.17 2.13 to 2.17 2.13 to 2.17 2.13 to 2.17D3368 1427.3 Tolerances for width of rolls shall be 61.6 mm(60.0625 in.) for film or sheet thickness less than 0.508 mm(0.020 in.) and 63.2 mm (60.125 in.) for sheet thickness equalto or
29、 greater than 0.508 mm.8. Sampling8.1 Sampling shall be statistically adequate to satisfy therequirements of 15.4.9. Number of Tests9.1 One set of test specimens as prescribed in Section 10shall be considered sufficient for testing each batch. Theaverage result of the specimens tested shall conform
30、to therequirements of this specification.10. Specimen Preparation10.1 Take test specimens across the width of film excludingareas of wrinkles, folds, gel, and other obvious, visuallydetermined, imperfections.11. Conditioning11.1 For those tests where conditioning is required andunless otherwise spec
31、ified in the test method, condition the testspecimens in accordance with Procedure A of Practice D618for a period of at least 4 h prior to test.12. Apparatus12.1 Heat Sealer,6single heated jaw with silicone rubberpad, temperature range from 150 to 275C (300 to 525F),pressure 138 kPa (20 psi), and dw
32、ell time 10 s.12.2 Rod,7or other means for coating aluminum evenlywith adhesive.13. Reagents and Materials13.1 Methyl Ethyl Ketone.13.2 Acrylic Adhesive.813.3 Anodized Aluminum,90.5 mm (0.019 in.) thick. Othersheet aluminum, either plain or anodized, should be satisfac-tory if it can be shown that t
33、he peel failure of the seal isbetween the treated film surface and the adhesive, and notbetween the adhesive and the aluminum.14. Test Methods14.1 Test ConditionsUnless otherwise specified, conducttests at the standard laboratory temperature of 23 6 2C (70 to77F). Since this film and sheeting does n
34、ot absorb water, theimportance of constant humidity during testing is not impor-tant.14.2 Specific GravityDetermine the specific gravity ontwo specimens in accordance with Method A of Test MethodsD792. Add two drops of a wetting agent (liquid detergent)10tothe water in order to reduce the surface te
35、nsion and insurecomplete wetting of the sample.14.3 Tensile Properties:14.3.1 Film 0.254 mm (0.010 in.) or less in nominalthickness.14.3.1.1 Determine the tensile strength and elongation inaccordance with Method A of Test Methods D882.14.3.2 Sheet greater than 0.254 mm (0.010 in.) in nominalthicknes
36、s.14.3.2.1 Cut five bars with the microtensile die shown inFig. 1. If the die is the steel rule type it shall have a curvatureof 5 6 0.8 mm (532 6132 in.). Tabs at each end of the dielonger than specified in Fig. 1 are allowed.14.3.2.2 Determine the tensile properties in accordance withthe procedure
37、s described in Test Method D638, except that the6Sentinel Model 12AS or 12-12AS, available from Packaging Industries Group,Inc., 130 North St., Hyannis, MA 02601, or equivalent, has been found satisfactoryfor this purpose.7No. 24 “Draw Down” rod, available from R. D. Specialities, Inc., P.O. Box 206
38、,Webster, NY 14580, has been found satisfactory for this purpose.8No. 68040 acrylic adhesive available from E. I. DuPont de Nemours “Joy” detergent, Proctor and Gamble, Inc.; and “Triton” X-100, Rohm and Haas Co.TABLE 2 Thickness and Tolerance RequirementsNominal Thickness,mm (in.)ApplicableTypesThi
39、ckness, mm (in.)min max0.0127 (0.0005) I, II, IV 0.0089 (0.00035) 0.0165 (0.00065)0.025 (0.001) I, II, IV 0.018 (0.0007) 0.033 (0.00130.051 (0.002) I, II, III 0.038 (0.0015) 0.064 (0.0025)0.076 (0.003) I, II, III 0.057 (0.00225) 0.095 (0.00375)0.102 (0.004) I, II, III 0.080 (0.00315) 0.123 (0.00485)
40、0.127 (0.005) I, II, III 0.102 (0.004) 0.152 (0.006)0.254 (0.010) I, II, III 0.216 (0.0085) 0.292 (0.0115)0.356 (0.014) I 0.320 (0.0126) 0.391 (0.0154)0.508 (0.020) I, II, III 0.432 (0.017) 0.584 (0.023)0.762 (0.030) I, III 0.648 (0.0255) 0.876 (0.0345)1.016 (0.040) III 0.889 (0.0350) 1.143 (0.0450)
41、1.524 (0.060) III 1.372 (0.054) 1.676 (0.0660)2.413 (0.095) III 2.172 (0.0855) 2.654 (0.1045)3.175 (0.125) III 2.870 (0.113) 3.480 (0.137)D3368 143specimens shall be as detailed in 14.3.1 14.3.2.1, the initialjaw separation shall be 22.2 6 0.13 mm (0.875 6 0.005 in.),and the speed of testing shall b
42、e 51 mm/min (2 in./min). Clampthe specimen with essentially equal lengths of the tabs in eachjaw. If an extensiometer is not available, the elongation atbreak is determined from the chart record, expressing the valueas a percentage of the initial jaw separation. Average the testresults. In making th
43、e test for tensile properties, a full-scaleload of 22.5 kg (50 lb) has been found suitable. If thespecimens break quickly, increase the chart speed so that thechart record for each specimen covers at least 51 mm (2 in.) onthe time axis of the chart.NOTE 2In determining elongation from the chart reco
44、rd, draw aperpendicular from the break point to the time axis. Measure the distancealong the time axis from the intersection of this perpendicular with theaxis to the intersection of an extension of the linear part of the load-timecurve and the time axis. Then, calculate percent elongation as follow
45、s:Elongation 5 100d/22.2 or 0.875!m (1)where:d = distance on chart, mm (in.),m = hart speed magnification,= chart speed/crosshead speed (both in same units), and22.2 = factor when d is in millimetres, or0.875 = factor when d is in inches.14.4 Dielectric StrengthDetermine the dielectric strengthin ac
46、cordance with Test Methods D149, using the short-timetest and a 6.35-mm (14-in.) brass electrode with a 0.79-mm(132-in.) radius.14.5 Dimensional Change on HeatingDetermine length-wise change in dimensions by averaging five measurements onspecimens immediately before and after oven heating. Eachspeci
47、men shall be 101.6 6 1.6 by 101.6 6 1.6 mm (4 6116 by4 6116 in.) and be freely suspended in an oven controlled at200 6 3C (392 6 5.4F) for a minimum of 30 min. After theheating period, cool the specimens to 23 6 2C (73.4 6 3.6F),and remeasure them.14.6 CementabilitySeal the treated surface of the ma
48、terialby the application of controlled heat, pressure, and time ofdwell to an adhesive-coated strip of aluminum sheet. Measurethe peel strength at a peel angle of 180, and a speed of 30.5cm/min (12 in./min).14.6.1 Procedure for Preparation of Adhesive-Coated Alu-minum:14.6.2 Coat sheets of aluminum
49、254 by 254 mm (10 by 10in.) evenly with No. 68040 adhesive using a No. 24 “DrawDown” rod and allow to dry in air for 8 h. The thickness ofcoating is not critical but it is important that the coating besmooth and bubble-free. Use methyl ethyl ketone to thin theadhesive if necessary, and for cleaning the equipment.14.6.3 Cut the coated sheets into strips 38.1 by 127 mm (1.5by 5 in.) and store in a desiccator. It is not advisable to preparemore thana2or3-month supply of coated aluminum at onetime, as the adhesive slowly crosslinks i
