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ASTM D4393 2004 Edition, October 1, 2004
Complete Document
Superseded By: ASTM D4393/D4393M
Standard Test Method for Strap Peel Adhesion of Reinforcing Cords or Fabrics to Rubber Compounds
Additional Comments: W/D S/S BY ASTM D4393/D4393M
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This test method covers the determination of peel adhesion of reinforcing fabrics that are bonded to rubber compounds. It is applicable to either woven or parallel cord textile structures from both natural and manmade fibers and to parallel steel cord structures.

This test method is primarily used to evaluate tire cords and tire cord fabrics, including steel tire cords, using a suitable tire cord adhesive and a suitable rubber compound. This test method may be used to evaluate tire cord adhesives (fabric dip), metallic (usually brass) coatings on steel cord, and the process of adhesive reaction on the cord using one consistent form of tire cord or fabric and one consistent rubber compound. This test method may be used to evaluate cords and fabrics in industrial hose and belting products and other cord or fabric reinforced rubber products.

Variables that may contribute to differences in results of this test method include adhesive type, adhesive application procedure, adhesive cure, fiber type, construction of cords or reinforcing fabrics, rubber type, rubber cure, rubber thickness, and cord spacing.(Footnote 2)

The deleterious effect of ozone in combination with atmospheric moisture on the ability of adhesives to bond with rubber requires assiduous protection of cords prior to rubber embedment.(Footnote 3)

This test method is written in SI units. The inch-pound units in parentheses are provided in this test method are not necessarily exact equivalents of the SI units. Either system of units may be used in this test method.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Footnote 2 - Iyengar, Y., "Adhesion Behavior of Nylon Tire Cord/Adhesive/Rubber Systems," Journal of Applied Polymer Science, Vol 13, 1969, pp. 353-363.

Footnote 3 - Wenghoefer, H. M., "Environmental Effects on RFL Adhesion," Rubber Chemistry and Technology, Vol 47, No. 5, December 1974, pp. 1066-1073.