| 摘要 |
PURPOSE:To obtain a composition, consisting of ethylene-propylene copolymer, bromine-containing aromatic compound, antimony trioxide, specific hindered phenol and 2-mercaptobenzimidazole and having high-degree flame retardance and toughness. CONSTITUTION:A composition obtained by blending (A) 100pts.wt. ethylene- propylene copolymer with >=70mol.%, preferably 70-85mol.% ethylene content with (B) a bromine-containing aromatic compound with >=50wt.% bromine content (e.g. decabromodiphenyl ether) in an amount of 10-40pts.wt. expressed in terms of bromine quantity, (C) 5-30pts.wt. antimony trioxide, (D) 0.2-5pts.wt. hindered phenol containing ester group or carbonyl group and (E) 3-30pts.wt. 2-mercaptobenzimidazole, preferably adding an organic peroxide (e.g. dicumyl peroxide), crosslinking assistant, etc., molding the resultant composition into a given shape and crosslinking the molded composition.
|
