Crosslinkable polymeric compositions with methyl-radical scavengers and articles made therefrom
申请人:Dow Global Technologies LLC
公开号:US10851221B2
公开(公告)日:2020-12-01
Crosslinkable polymeric compositions for use in, for instance, cable insulation layers, comprise an ethylene-based polymer, an organic peroxide, a crosslinking coagent, and a methyl-radical scavenger comprising at least one derivative of 2, 2, 6, 6-tetramethyl-1-piperidinyloxyl (“TEMPO”), wherein ratio of crosslinking coagent to organic peroxide is less than 1.72:1 on a molar basis. A crosslinked article prepared from a crosslinkable polymeric composition is also disclosed, the crosslinkable polymeric composition comprising, inter alia, a methyl-radical scavenger comprising at least one TEMPO derivative. In addition, a coated conducttor comprising a conductive core and a polymeric layer at least partially surrounding the conductive core is disclosed, wherein at least a portion of the polymeric layer comprises the crosslinked article.
用于电缆绝缘层等的可交联聚合物组合物包括乙烯基聚合物、有机过氧化物、交联剂和甲基自由基清除剂,甲基自由基清除剂包括至少一种 2,2,6,6-四甲基-1-哌啶基氧基("TEMPO")的衍生物,其中交联剂与有机过氧化物的摩尔比小于 1.72:1。还公开了一种由可交联聚合物组合物制备的交联制品,该可交联聚合物组合物除其他外包括至少一种 TEMPO 衍生物的甲基自由基清除剂。此外,还公开了一种涂层导体,包括导电芯和至少部分环绕导电芯的聚合物层,其中聚合物层的至少一部分包括交联制品。