Dialkyl peroxide, cross-linking composition containing the same, method for cross-linking, and electric power cable
申请人:NOF CORPORATION
公开号:EP0579434A1
公开(公告)日:1994-01-19
A novel dialkyl peroxide is disclosed which is represented by the formula:
wherein R₁ and R₂ independently stand for a hydrogen atom or a methyl group, R₃ stands for an alkyl group of 1 to 5 carbon atoms, X stands for an alkylene group of 1 to 3 carbon atoms, -C(O)-, -CH₂-(O-CH₂-CHR₄)m-OC(O)- [wherein R₄ stands for a hydrogen atom or a methyl group and m stands for an integer in the range of 0 to 10], or -C(O)-(O-CH₂-CHR₅)n-OC(O)- (wherein R₅ stands for a hydrogen atom or a methyl group and n stands for an integer in the range of 1 to 10). A composition for the production of a cross-linked ethylene type polymer comprises the dialkyl peroxide and an ethylene type polymer. An electric power cable excelling in electrical characteristics (AC breakdown strength) comprises a conductor and a resin layer deposited on the periphery of the conductor and formed of a cross-linked ethylene type polymer obtained by using the dialkyl peroxide as a cross-linking agent.
本发明公开了一种新型二烷基过氧化物,其化学式为
其中 R₁ 和 R₂ 各自代表氢原子或甲基,R₃ 代表 1 至 5 个碳原子的烷基,X 代表 1 至 3 个碳原子的亚烷基,-C(O)-、-CH₂-(O-CH₂-CHR₄)m-OC(O)-[其中 R₄ 代表氢原子或甲基,m 代表 0 至 10 之间的整数]、或-C(O)-(O-CH₂-CHR₅)n-OC(O)-(其中 R₅ 代表氢原子或甲基,n 代表 1 至 10 范围内的整数)。一种用于生产交联乙烯聚合物的组合物包括过氧化二烷基和乙烯聚合物。一种电气特性(交流击穿强度)优异的电力电缆包括导体和沉积在导体外围的树脂层,该树脂层由通过使用过氧化二烷基作为交联剂而获得的交联乙烯聚合物形成。