Abstract
When a vulcanized laminate of nylon 6 fabric spread-proofed by butyl rubber is exposed to high energy radiation, free radicals are formed in both rubber and nylon. Such free radicals have considerable mobility due to their high energy states and hence it is postulated that the now mobile rubber free radicals diffuse into the adjacent nylon fibres and the nylon active free radicals reciprocate by diffusing into the rubber. Within each polymer material the respective rubber and nylon molecular free radicals can be considered to react together producing covalent bonds. By this means adhesion between rubber and nylon is greatly enhanced so that a physical surface energy wetting bond between rubber and nylon can be transformed into a high energy, and hence high strength, chemical bond which will only break by tearing within the rubber, ie a rubber-rubber failure.
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