ASTM D3393-1991(2005) Standard Specification for Coated Fabrics-Waterproofness《涂层织物 耐水性》.pdf
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1、Designation: D 3393 91 (Reapproved 2005)Standard Specification forCoated FabricsWaterproofness1This standard is issued under the fixed designation D 3393; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A
2、 number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification sets forth the minimum requirementsfor hydrostatic resistance of fabrics coated with rubber orplastics. Coated fab
3、rics satisfying these requirements are con-sidered to be waterproof.1.2 The values stated in SI units are to be regarded as thestandard. The inch-pound units given in parentheses are forinformation only.1.3 The following precautionary caveat pertains only to thetest method portion of this specificat
4、ion: This standard doesnot purport to address all of the safety concerns, if any,associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.2. Referenced Docum
5、ents2.1 ASTM Standards:2D 751 Test Methods for Coated FabricsD 1566 Terminology Relating to Rubber3. Terminology3.1 Definitions:3.1.1 merrow seama sewn seam made to unite fabricpieces for coating: not to be included in the finished product.3.1.2 waterproofnessthe property of impenetrability byliquid
6、 water. (See Terminology D 1566.)3.1.3 water repellencythe property of being resistant towetting by liquid water. (See Terminology D 1566.)3.1.4 water resistancethe property of retarding both pen-etration and wetting by liquid water. (See TerminologyD 1566.)4. Summary of Test Method4.1 Circular spec
7、imens of the coated fabric to be tested forwaterproofness are exposed to a specific hydrostatic pressure,as detailed in Sections 6-9, and the upper exposed surface isexamined visually for penetration of water.4.2 Records to document compliance with this specificationshall be maintained by producers
8、and fabricators. Statisticallybased sampling plans may be utilized. In cases where resultsare in dispute, additional sampling and testing as agreed uponbetween the purchaser and the seller may be necessary.5. Significance and Use5.1 The purpose of this specification is to establish arecognized crite
9、rion for “waterproofness” in terms of a mini-mum hydrostatic resistance. The necessary definitions to pro-vide a common understanding of the meaning of this charac-teristic when it is used to describe a fabric coated with rubberor plastics are also given. The specification does not coverrequirements
10、 for water repellency or water resistance of fabricscoated with rubber or plastics.TEST METHOD6. Apparatus6.1 Hydrostatic Tester, capable of applying within6sapressure of 207 kPa (30 psi) on the specimen with an accuracyof 67.0 kPa (1.0 psi). The apparatus shall be equipped withtwo concentric ring c
11、lamps, having an inner diameter of 31.5 60.5 mm (1.24 6 0.02 in.) between which the specimens can beclamped in order to avoid slippage. The inside edges of the ringclamps that come into contact with the test specimen shall berounded to 0.3 to 0.5 mm (0.01 to 0.02 in.) to avoid cutting thespecimen. A
12、 seal shall be fitted on the lower clamp to preventleakage during the test.6.2 A type of equipment suitable for performing this test isdescribed in more detail in Section 37 of Test Methods D 751.7. Test Specimens7.1 At least ten specimens shall be cut from samples takenat random from the roll of co
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