Common test methods for insulating and sheathing materials of electric cables . part 4 : methods specific to polyethylene and polypropylene compounds . section one : resistance to environmental stress cracking - wrapping test after thermal ageing in air - measurement of the melt flow index - carbon black and or mineral filler content measurement in pe 电缆绝缘和护套材料通用试验方法第4部分:聚乙烯和聚丙烯混合料专用试验方法第1节:耐环境应力开裂试验-空气热老化后的卷绕试验-熔体指数测量方法-聚乙烯中碳黑和或矿物质填料含量的测量方法
