| 摘要 |
PURPOSE:To restrict the generation of water-tree by adding a specific quantity of amine, which is expressed by a specific formula, to polyethylene or ethylene copolymer or the mixture thereof. CONSTITUTION:Amine at 0.005-1.0 parts by weight, which has four or more of carbon in total, is added to 100 parts by weight of polyethylene or ethylene copolymer or the mixture thereof. In the formula, nnot equal to 0; R<1>, R<2>, R<3>, R<4> is selected among hydrogen or hydrocarbon radical except for phenyl group and substitutional phenyl group. Electrical insulating composition and electric wire and cable, in which the generation of water-tree can be restricted even in the case where a fault such as void, foreign material and unevenness of the interface between an insulating material and a semi-conductor layer exists in the insulating material unavoidably, is thereby obtained. |
