| 摘要 |
PURPOSE: To effectively retard generation of water tree by containing a specified weight part of a compound having a phenyl group and a phenyl acrylate group in a molecule in polyolefin. CONSTITUTION: 0.03-5 pts.wt. compound having a phenyl group and a phenyl acrylate group in a molecule such as 2-tert-butyl-6-(3-tert-butyl-2-hydroxy-5- methylbenzyl)-4-methyl phenyl acrylate is mixed to 100 pts.wt. polyolefin such as polyethylene. A lubricant, a colorant, a filler, and a crosslinking accelerator or the like are added if necessary. A mixture is kneaded with a hot roller, formed in a pellet, then put into an extruder, extruded on a copper conductor together with an internal semiconductor layer 2 and an external semiconductor layer 4, crosslinked in a nitrogen gas, pressed, then cooled to form an electric cable 5. |
