| 摘要 |
PURPOSE:To produce a crosslinked molded article capable of suppressing occurrence of water tree, subjecting a specific silane grafted block copolymer and a silanol condensation catalyst to extrusion molding with reacting them under heating to give a molded article by extrusion molding, crosslinking it in the presence of water. CONSTITUTION:An A-B-A block copolymer(A is polystyrene; B is a polymer obtained by adding hydrogen to polybutadiene or polyisoprene so that an unsaturated part is collapsed) is reacted with a silane compound(e.g., vinyltrimethoxysilane, etc.) and a radical generator(e.g., dicumyl peroxide, etc.) at about 200 deg.C under heating to give a silane grafted A-B-A block copolymer, which is subjected to extrusion molding with reacting them under heating, and a molded article by extrusion is brought into contact with water and crosslinked, to give the desired crosslinked molded article. USE:An insulating material for electric wire and cable. |
