The water building a bridge Characteristic resin constituent which is superior in tracking resistance and weather resistance, and the power cable null melt mass flow rate which has

摘要

PROBLEM TO BE SOLVED: To provide a tracking-resistant resin composition crosslinkable with water, having excellent mechanical characteristics, without causing surface roughness, and therefore having excellent moldability so as to exhibit uniform electrically-insulating performance, and further having an excellent balance between weather resistance and tracking resistance, and to provide a power cable having an insulating coated layer (layer of an insulating material or a sheathing material) formed out of the composition.;SOLUTION: This tracking-resistant resin composition crosslinkable with the water is obtained by mixing (A) an ethylenic resin in an amount of 100 pts.wt. with (B) magnesium hydroxide in an amount of 8-50 pts.wt., (C) carbon black in an amount of 0.2-1.1 pts.wt., (D) an unsaturated alkoxysilane in an amount of 0.1-10 pts.wt., (E) an organic peroxide in an amount of 0.01-1 pt.wt., and (F) a silanol-condensing catalyst in an amount of 0.001-1 pt.wt., wherein the ethylenic resin consists mainly of an ethylene-α-olefin bipolymer and/or a terpolymer and has a melt mass flow rate of 0.8-5.8 g/10 min. The power cable having the insulating coated layer is formed out of the composition.;COPYRIGHT: (C)2004,JPO