1996 Volume 45 Issue 4 Pages 449-454
By considering the compatibilizing effect for polymer alloy, two kinds of polymer type silane coupling agents, poly (methyl methacrylate) type (MacTMS-Ia-e) with Mn=1000-9800 and poly (styrene) type (MacTMS-IIa-e) with Mn=8300-11700 were prepared from the reaction of corresponding ω-allyl macromonomers and trimethoxysilane using H2PtCl6 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.
