GFRP用高分子型シランカップリング剤の合成と性能

概要

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By considering the compatibilizing effect for polymer alloy, two kinds of polymer type silane coupling agents, poly(methyl methacrylate)type(MacTMS-Ia〜e)with M_n=1000〜9800 and poly(styrene)type(MacTMS-IIa〜e)with M_n=8300〜11700 were prepared from the reaction of corresponding ω-allyl macromonomers and trimethoxysilane using H_2PtCl_6 as a catalyst, where ω-allyl macromonomers with a different molecular weight were prepared by radical polymerization of methyl methacrylate(or styrene)initiated with 2, 2'-azobisisobutyronitrile, varying the concentration of allyl mercaptan as a chain transfer agent. From the reaction of MacTMS and glass beads, the grafting efficiency(GE) of polymer onto glass beads was found to be 6.14〜15.45 %. A series of glass fiber reinforced plastics(GFRP-Ia〜e, GFRP-IIa〜e)were fabricated from GF cloth modified with MacTMS and bisphenolic epoxy acrylate resin oligomer as a matrix resin. It was found that the mechanical properties, such as flexural strength, flexural modulus, and ILSS, were affected by both the degree of polymerization and grafting efficiency of MacTMS.
1996-04-15