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Heat-resistant vibration-damping pressure-sensitive adhesive composition, process for producing the same and vibration-damping adhesive tape or sheet using the composition
Heat-resistant vibration-damping pressure-sensitive adhesive composition, process for producing the same and vibration-damping adhesive tape or sheet using the composition
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机译:耐热减震压敏胶粘剂组合物,其制备方法以及使用该组合物的减震胶粘带或减震片
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摘要
A vibration-damping pressure-sensitive adhesive composition containing a crosslinked structure of a copolymer comprising (A) from 75 to 92% by weight of a main monomer comprising an alkyl (meth)acrylate containing from 8 to 12 carbon atoms in the alkyl moiety thereof and (B) from 8 to 25% by weight of a carboxyl-containing monomer whose homopolymer has a glass transition temperature of 50 C. or more, said crosslinked structure having a solvent-insoluble content of 80% by weight or more and a weight loss of 3% by weight or less on heating at 120 C. for 240 hours, and said composition having a T-peel strength of 400 g/20 mm- width or more from a SUS plate and a loss factor of 0.05 or more at 60. degree. C. in the vicinity of 1 kHz as determined by a half-value width method. The composition exhibits satisfactory heat resistance against long-term use in high temperatures as well as satisfactory adhesion to various parts at room temperature.
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