1、Designation: D4637/D4637M 12D4637/D4637M 13Standard Specification forEPDM Sheet Used In Single-Ply Roof Membrane1This standard is issued under the fixed designation D4637/D4637M; the number immediately following the designation indicates theyear of original adoption or, in the case of revision, the
2、year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript 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 specification covers fle
3、xible sheet made from ethylene-propylene-diene terpolymer (EPDM) intended for use insingle-ply roofing membranes exposed to the weather. The tests and property limits used to characterize the sheet are values toensure minimum quality for the intended use. The sheet may be non-reinforced, fabric- or
4、scrim-reinforced, or fabric-backedvulcanized rubber sheet.1.2 In-place roof system design criteria, such as fire resistance, field seaming strength, material compatibility, and upliftresistance, among others, are factors that must be considered but are beyond the scope of this specification.1.3 The
5、values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the s
6、tandard.1.4 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address allof the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriatesafety and health practices and de
7、termine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D412 Test Methods for Vulcanized Rubber and Thermoplastic ElastomersTensionD413 Test Methods for Rubber PropertyAdhesion to Flexible SubstrateD471 Test Method for Rubber PropertyEffect of Liqu
8、idsD518 Test Method for Rubber DeteriorationSurface Cracking (Withdrawn 2007)3D573 Test Method for RubberDeterioration in an Air OvenD624 Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic ElastomersD751 Test Methods for Coated FabricsD816 Test Methods for Rubber Cemen
9、tsD1149 Test Methods for Rubber DeteriorationCracking in an Ozone Controlled EnvironmentD1204 Test Method for Linear Dimensional Changes of Nonrigid Thermoplastic Sheeting or Film at Elevated TemperatureD2137 Test Methods for Rubber PropertyBrittleness Point of Flexible Polymers and Coated FabricsD5
10、602 Test Method for Static Puncture Resistance of Roofing Membrane SpecimensD5635 Test Method for Dynamic Puncture Resistance of Roofing Membrane SpecimensD6382 Practice for Dynamic Mechanical Analysis and Thermogravimetry of Roofing and Waterproofing Membrane MaterialD7635/D7635M Test Method for Me
11、asurement of Thickness of Coatings Over Fabric ReinforcementG151 Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light SourcesG155 Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials1 This specification is under the juri
12、sdiction of ASTM Committee D08 on Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.22D08.18 onWaterproofing and Dampproofing SystemsNonbituminous Organic Roof Coverings.Current edition approved Jan. 1, 2012April 1, 2013. Published January 2012April 2013. Originally appr
13、oved in 1987. Last previous edition approved in 20102012 asD4637 10.D4637/D4637M 12. DOI: 10.1520/D4637_D4637M-12.10.1520/D4637_D4637M-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume i
14、nformation, refer to the standards Document Summary page on the ASTM website.3 The last approved version of this historical standard is referenced on www.astm.org.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 bee
15、n 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 versionof the standard as published by ASTM is to be considered the official document
16、.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13. Classification3.1 Types describe the sheet construction:3.1.1 Type INon-reinforced.3.1.2 Type IIScrim (or fabric) internally reinforced.3.1.3 Type IIIFabric backed.4. Materials and M
17、anufacture4.1 The sheet shall be formulated from EPDM polymers and other compounding ingredients. EPDM shall be the principalpolymer used in the sheet and shall be greater than 95 % of the total polymer content.4.2 To make seams and repairs, the sheet shall be capable of being bonded watertight to i
18、tself and the supplier or fabricator shallrecommend suitable methods.5. Physical Properties and Tolerances5.1 The sheet shall conform to the physical requirements prescribed in Table 1.5.2 The tolerance for time conditions (aging, weathering, and so forth) is 615 min or 61 % of the period; whichever
19、 is greater,unless otherwise specified.5.3 Tolerances for temperature shall be 62C 64F.6. Dimensions6.1 The width and length of the sheet shall be agreed upon between the purchaser and the supplier.6.1.1 The width and length tolerance shall be +3 %, 0 %.6.2 The thickness tolerance shall be +15 %, 10
20、 % of the thickness agreed upon between the purchaser and supplier, but in nocase shall the thickness be less than the minimum listed in Table 1.7. Workmanship, Finish, and Appearance7.1 The sheet, including the full width of factory seams if present, shall be fully adhered, watertight, and visibly
21、free of pinholes,particles of foreign matter, undispersed raw material, or other manufacturing defects that might affect serviceability. If the numberof irregularities in the form of pockmarks (see Note 1) appear excessive on the sheet (or portion thereof), then its rejection shallbe negotiated betw
22、een involved parties.TABLE 1 Physical Requirements for EPDM SheetType I II IIIThickness, min, mm in.:Sheet-overall 1.016 0.040 1.016 0.040 .Coating over scrim or fabric . 0.38 0.015 0.76 0.030Breaking strength, min, N lbf . 400 90 400 90Tensile strength, min, MPa psi 9.0 1305 . .Dynamic Puncture Res
23、istance, Type I at 5 J, Type II at at 10 J pass passStatic Puncture Resistance, Type I at 20 kg 44.1 lbf, Type II at25 kg 55.1 lbfpass passElongation, ultimate, min,% 300 250A 300AElongation fabric break, ultimate, min, %Machine directionCross direction1515Tensile set, max, % 10 . .Tear resistance,
24、min, kN/m lbf/in. 26.27 150 . .Tearing strength, min, N lbf . 45 10 45 10Brittleness point, max, C F 45 49 45 49 45 49Ozone resistance, no cracks pass pass passHeat aging:Breaking strength, min, N lbf . 356 80 356 80Tensile strength, min, MPa psi 8.3 1205 . .Elongation, ultimate, min,% 200 200A 200A
25、Tear resistance, min, kN/m lbf/in. 21.9 125 . .Linear dimensional change, max, % 1 1 1Water absorption, max, mass % + 8, 2 + 8, 2A 8, 2AWater absorption, max, mass % + 8, 2 + 8, 2A +8/ 2AFactory seam strength, min, kN/m lbf/in. 8.8 50 or sheet failureWeather resistance:Visual inspection no cracks or
26、 crazing no cracks or crazing no cracks or crazingPRFSE, min, % 30 . .Elongation, ultimate, min, % 200 . .Fabric adhesion, min, N/m lbf/in. . . 525 3A Specimens to be prepared from coating rubber compound, vulcanized in a similar method to the reinforced products.D4637/D4637M 1327.2 Edges of the she
27、ets shall be straight and flat so that they may be seamed to one another without fishmouthing.NOTE 1Pockmarks are oblong depressions, cavities, or craters on the surface of the sheet that have an approximate surface dimension of 3.2 by 1.6mm 18 by 116 in., and have a maximum depth approaching one ha
28、lf of the sheet thickness.8. Test Methods8.1 DimensionsTest Methods D751, after permitting the sheet to relax at 23 6 2C 73.4 6 4F for 1 h 6 15 min.8.2 Thickness, Sheet OverallFrom across the full width of the unbuffed sheet, take three samples, 300 by 300 mm 1 by 1 ft.Measure the thickness of each
29、corner. On fabric backed (Type III) the coating thickness can be measured after cutting or buffingfabric from the rubber. Refer to Test Method D412 for Type I sheet and Test Method D751 for Type II and Type III sheet.8.3 Thickness of Coating Over Scrim (Reinforcing Fabric)Follow preparation procedur
30、es as specified in Test MethodD7635/D7635M. The thickness measurements shall be conducted as described in the test method on the coating on the sideintended to be exposed to the weather.8.4 Breaking StrengthTest Methods D751, Grab Method.8.5 Tensile StrengthTest Methods D412, Die C.8.6 Dynamic Punct
31、ure ResistanceTest Method D5635, at an energy of 5 J min at 23 6 2C 73.4 6 4F for Type I and anenergy of 10 J min for Type II.8.7 Static Puncture ResistanceTest Method D5602, at a load of 20 kg 44.1 lbf min for Type I and a load of 25 kg 55.1 lbfmin for Type II at 23 6 2C 73.4 6 4F.8.8 Elongation, U
32、ltimateTest Methods D412, Die C.8.9 Elongation at Fabric Break, UltimateTest Method D751, Grab Method, 50 mm 2 in. per minute jaw separation rate.8.10 Tensile SetTest Methods D412, Method A, Die C, 50 % elongation.8.11 Tear ResistanceTest Method D624, Die C.8.12 Tearing StrengthTest Methods D751, B-
33、Tongue Tear.8.13 Brittleness PointTest Methods D2137.8.14 Ozone ResistanceTest Method D1149. Inspect at 7 magnification on specimens exposed to 100 mPa 1 105 psiozone in air at 40 6 2C 104 6 4F. Elongate Type I specimens 50 % for 166 6 1.66 h exposure. Type II and Type III specimensmust be wrapped a
34、round a 75 mm 3 in. diameter mandrel for 166 6 1.66 h exposure. The required specimen width is 25 mm1 in.8.15 Dark Oven Heat ExposureTest Method D573. Expose black sheet to dark oven heat at 116 6 2C 240 6 4F for 6706 6.7 h and non-black sheet for 166 6 1.66 h. Sample that has been exposed to dark o
35、ven heat is then used for testing of breakingstrength, tensile strength, elongation, tear resistance, and linear dimensional change. (Linear dimensional change tests samplebefore and after exposure to dark oven heat.)8.15.1 Breaking StrengthTest Method D751, Grab Method.8.15.2 Tensile StrengthTest M
36、ethod D412, Die C.8.15.3 Elongation, UltimateTest Method D412, Die C.8.15.4 Tear ResistanceTest Method D624, Die C.8.15.5 Linear Dimensional ChangeTest Method D1204.8.16 Water AbsorptionTest Method D471, at 70 6 2C 158 6 4F for 166 6 1.66 h.8.17 Factory Seam StrengthMethods D816, Method B. Modify pr
37、ocedure by cutting a 25-mm 1-in. wide by 300-mm12-in. long sample across the lap seam. Place in jaws approximately 50 mm 2 in. from edges of the overlap area and test at50 mm 2 in./min.8.18 Fabric AdhesionTest Method D413. Perform test on strip specimen-Type A, using 180 peel.8.19 Weather Resistance
38、Accelerated weathering tests shall be performed in accordance with Practices G151 and G155.These tests are performed on the intact sheet with the weathering side facing the lamps. Mount specimens for exposure under nostrain. After exposure the specimens shall be removed and inspected immediately for
39、 cracks and crazing at 10 % strain in the bentloop configuration in accordance with Test Method D518 under 7 magnification. A specimen is rated “pass” if no cracks orcrazing are observed. In addition, for Type I sheet, determine tensile strength and ultimate elongation after weather exposure.Calcula
40、te the specimen percent retained fractional strain energy (PRFSE):PRFSE5 Tensile Strength3Elongation! agedTensile Strength3Elongation! original 31008.20 Weather ResistancePractices G151 and G155 Xenon-Arc shall be operated in accordance with the following conditions:D4637/D4637M 133Filter Type Dayli
41、ght filterIrradiance 0.35 to 0.70 W/(m2nm) at 340nm. The maximumallowable operationalfluctuation of the irradiancesetting is 0.02 W/(m2 nm).(42 to 84 W/m2 at 300 to 400nm. The maximumallowable operationalfluctuation of theirradiance setting is 2.5W/m2.)Cycle 690 15 min light, 30 min light,plus water
42、 spray on the frontsurface.UninsulatedBlack PanelTemperature80C 176F during the dryperiod. The maximumallowable operationalfluctuation is 2.5C 5F.Chamber AirTemperature(where applicable)50C. The maximum allowableoperational fluctuationis 2C.RelativeHumidity50 %. The maximum allowableoperational fluc
43、tuationis 5 %.Spray Water Refer to Practice G155, Section6.6.1.SpecimenReposit-ioning(if required)Refer to Practice G155, Section9.5.Every 315 KJ/(m2 nm) at 340nm (37.8 MJ/m2 at300 to 400 nm.).ExposuredurationWhite2520 KJ/(m2nm) at 340nm (302.4 MJ/m2 at300 to 400 nm.)Black5040 KJ/(m2nm) at 340nm (60
44、4.8 MJ/m2 at300 to 400 nm.)NOTE 2If the operational fluctuations are greater than the maximum allowable after the equipment has stabilized, discontinue the test and correct thecause of the problem before continuing.9. Inspection and Special Testing9.1 The manufacturer shall inspect and test producti
45、on to ensure compliance of the product with this specification.10. Rejection and Resubmittal10.1 Failure to conform to any one of the requirements prescribed in this specification shall constitute grounds for rejection.Rejection shall be reported to the producer or supplier promptly and in writing.
46、The seller shall have the right to reinspect therejected shipment and resubmit the lot after removal of those packages not conforming to the specified requirements.11. Product Marking11.1 The sheet shall be identified on the side intended to be exposed to the weather with this ASTM designation numbe
47、r(Specification D4637) and ASTM type, the name of the manufacturer or supplier, or the generic sheet type. The type and size ofthe identification is at the manufacturers option. Such identification shall occur at intervals not to exceed 4 m 13 ft in the longdirection of the sheet and not be located
48、near an intended seam area. The identification shall be applied in such a manner as tobe legible at least five years from installation. Identification shall not be required when so specified by the purchaser.12. Packaging and Package Marking12.1 The material shall be rolled on a substantial core and
49、 packaged in a standard commercial manner, unless otherwisespecified in the contract or order.12.2 Shipping containers shall be marked with the name of the material, the stock and lot numbers, the ASTM designationnumber and type, the size and quantity as defined by the contract or order under which shipment is made and the name of themanufacturer or supplier.D
