| 摘要 |
The present invention relates an electrically conductive wire having a metal core and an outer electrically insulative, polymer coating wherein the polym er composition contains polyphenylene sulfide, a polymeric grafting agent and a n ethylene copolymer. The polymeric grafting agent is a copolymer of at least about 50% by weight ethylene, about 0.5% to about 15% by weight of a reactiv e comonomer selected from the group consisting of: (i) an unsaturated epoxide of 4-11 carbon atoms, (ii) an unsaturated isocyanate of 2-11 carbon atoms, (iii ) an unsaturated alkoxy silane and/or unsaturated alkyl silane wherein the alkoxy or alkyl group is from 1-12 carbon atoms, and (iv) an oxazoline; and about 0 to about 49% by weight of a third optional comonomer selected from a t least one of an alkyl acrylate, alkyl methacrylate, vinyl ether, carbon monoxide, and sulfur dioxide, where the alkyl and ether groups are of 1-12 carbon atoms. The ethylene copolymer comprises at least about 50% by weight ethylene, about 1% to about 35% by weight of an acid-containing unsaturated mono-carboxylic acid, and about 0 to about 49% by weight of a moiety selecte d from at least one of alkyl acrylate, alkyl methacrylate, vinyl ether, carbon monoxide, and sulfur dioxide, and further wherein the acid groups are neutralized from 0-100% by a metal ion. Such wire meets SAE J1678 specifications at 125~C or higher at a thickness of polymeric coating of les s than 12 mils and/or withstands temperatures as high as 150~C at a thickness of polymeric coating of from 15 mils to 30 mils. |
