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    • 4. 发明授权
    • 전선피복용흑색폴리에틸렌계수지조성물
    • 用于涂覆电线的黑色聚乙烯组合物
    • KR100288182B1
    • 2001-09-17
    • KR1019930008008
    • 1993-05-10
    • 한화종합화학 주식회사
    • 이호성김승오이상우
    • C08L23/06
    • PURPOSE: Provided is a black polyethylene composition for coating the electric wire which has excellent mechanical property, resistance to environment and stress cracking, and extruding processability at high temperature. Unlike using the conventional ethylene vinylacetate copolymer, this composition uses low crystallinity and very low density polyethylene(VLDPE) of low pressure method together with polyethylene as a base resin, anti-oxidant, carbon black and lubricant. CONSTITUTION: The composition comprises: 77-95wt.%(based on the whole composition) of the base polyethylene(PE) with 0.910-0.970g/cm¬3 density and 0.1-3.0g/10min melt index; 3-20wt.%(based on 100 wt.% of the base resin) of VLDPE with 0.880-0.910g/cm¬3 density and 0.1-100g/10min melt index, made by polymerization of ethylene with α-olefin with more than C4, as an improver for anti environment stress cracks; 2-5wt.%(based on 100wt.% of the base PE) of carbon black with the particle size of not more than 20nm, pH 3.0-8.0, surface area of 80-150m¬2/g and DBP absorbance of 100-200cc/100g; 0.05-2.0wt.%(base on 100wt.% of base PE) of an antioxidant; and 0.5-8wt.%(based on 100wt.% of the carbon black) of one lubricant selected from metal stearate, aluminum monoalkoxy compound, low mol.wt. polyethylene wax and low mol.wt. polypropylene wax, saturated or unsaturated fatty acid and their derivatives.
    • 目的:提供具有优异机械性能,耐环境性和应力开裂性以及高温挤出加工性能的黑色聚乙烯组合物。 与使用传统的乙烯乙酸乙烯酯共聚物不同,该组合物使用低结晶度和低密度聚乙烯(VLDPE)以及聚乙烯作为基础树脂,抗氧化剂,炭黑和润滑剂。 组成:该组合物包含:具有0.910-0.970g / cm 3密度和0.1-3.0g / 10min熔体指数的基础聚乙烯(PE)的77-95wt。%(基于整个组合物); 3-20重量%(基于100重量%的基础树脂)VLDPE,0.880-0.910克/厘米3密度和0.1-100克/ 10分钟熔体指数,通过乙烯与α-烯烃的聚合制得的多于 C4,作为抗环境应力裂缝的改良剂; 2-5重量%(基于100重量%的基体PE)炭黑,粒径不大于20nm,pH 3.0-8.0,表面积为80-150m 2 / g,DBP吸光度为100- 200毫升/ 100克; 0.05-2.0重量%(基于100重量%的基础PE)的抗氧化剂; 和0.5-8重量%(基于炭黑的100重量%)的一种润滑剂,其选自金属硬脂酸酯,单烷氧基化合物,低摩尔重量 聚乙烯蜡和低摩尔重量 聚丙烯蜡,饱和或不饱和脂肪酸及其衍生物。