Abstract

AbstractThe dependence of joint strength upon the molecular weight between crosslinks Mc of an adhesive has been investigated for joints which consist of a crosslinked, amorphous rubber adhering to a rigid polymeric substrate. The joint strength was found to be independent of Mc if results were compared at the same effective rate of testing. If, however, values of joint strength were compared at a particular test temperature and rate, the joint strength generally increased as the value of Mc decreased. This result can be explained by the increase of the glass transition temperature of the adhesive with increasing crosslink density.

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