| 摘要 |
PROBLEM TO BE SOLVED: To enable a surface of a coated wire with good molding property to be cleanly finished even in extrusion and coating processing at a high speed by using a linear low density polyethylene(LLDPE) with high melting point. SOLUTION: An LLDPE is mate of a powder of 0.880 to 0.940g/cm in density and 0.25 to 1.0mm in average particle size and is a copolymer obtained by copolymerizing an ethylene and α-olefin of 3 to 8 in the number of carbons. To reduce a molding torque and improve molding property, a melt flow rate is within a range of 1.0 to 8.0 (g/10 minutes), and a linear low density polyethylene resin of which HLMFR/MFR is within a range of 50 to 100 is employed. To this resin, a non-saturation silane compound expressed by a general formula RSiR'n Y3-n in the presence of a radical generator is graft-reacted, then a condensation catalysis is fixed, and a lead wire is extruded and coated and is cross- liked in water. R and R' is a saturation hydrocarbon group, Y is an organic group targeted for hydrolysis, and n is 0, 1 or 2. |
