ASTM WK40982

    Work Item: ASTM WK40982 - New Test Method for Standard Test Method for Evaluation Method of Scrub Tests for Coated Fabric

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    Developed by Subcommittee: D13.20 | Committee D13 | Contact Staff Manager



    1. Scope

    This test method provides a Pass/Fail result by visual inspection of scrub test specimens obtained from coated fabrics and tested according to ISO 5981 Rubber or plastics-coated fabrics Determination of resistance to combined shear flexing and rubbing. 1.1.1 The adhesive strength of a specified laminate is determined by peeling the laminate apart at one hundred eighty degrees angle. 1.1.1.1 Discussion : The laminate can be of 2 coated or uncoated surfaces laminated with a seam sealant or of a film and an uncoated surface. 1.1.2 There are options to perform these tests under different test conditions. 1.1.2.1 Option 1: Standard lab conditions 1.1.2.2 Option 2: 85 degrees Celsius 1.1.2.3 Option 3: -35 degrees Celsius 1.1.3 The average peak load required to separate one layer from the other is reported in Newtons per centimeter of width. 1.1.4 Since the results are based on the method of laminate preparation, they may not be indicative of adhesive strength under other conditions. 1.1.5 The freshly exposed surface is examined at the completion of the test and an estimation of the percent cohesive failure is reported. 1.1.6 This method references ASTM D 903 and ASTM D 1876. 1.2 This test method does not predict actual performance of the seam in the end use of the seam sealed inflatable restraint.

    The ISO standard 5981 Rubber or Plstics-coated fabrics Determination of Resistance to Combined Shear Flexing and Rubbing is used by the inflatable restraint industry. The D13.20 Inflatable Restraint members require a more detailed procedure for evaluating the specimens after testing to ensure repeatable/reproducible results within and between mills/labs running this test.


    Keywords

    Adhesion, scrub, silicone, coating, ISO 5981, pinhole, delamination, abrasion

    The title and scope are in draft form and are under development within this ASTM Committee.

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    Work Item Status

    Date Initiated:
    02-19-2013

    Technical Contact:
    William Blackwood

    Status:
    Draft Under Development