Abstract
AbstractSystems of partially neutralized carboxyl‐terminated liquid rubber (PNCTLR)‐anhydride–bisepoxide were evaluated for adhesive properties. The PNCTLRs were prepared by the partial neutralization with MgO and CaO from a polymer of butadiene (BD) (Hycar CTB 2000X162) and copolymers of BD–acrylonitrile (Hycar CTBN 1300X8 and CTBNX 1300X9). As the bisepoxide, bisphenol A diglycidyl ether was used, and hexahydrophthalic anhydride was the anhydride used. The adhesive properties of the metal‐containing systems were superior to those of the reference systems not containing metal, owing to the polarity effect of the metal carboxylate groups. Further, the CTBN‐ and CTBNX‐series systems showed higher tensile shear and peel strengths than the CTB‐series systems, owing to the enhanced polarity effect of the nitrile groups.
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