ULTRA-HIGH-MOLECULAR-WEIGHT POLYETHYLENE RESIN COMPOSITION HAVING IMPROVED RESISTANCE TO IMPACT AND WEAR

摘要

PURPOSE:To provide the titled resin compsn. which gives moldings having a coefficient of static friction approximately equal to that of ultra-high-molecular- weight polyethylene homopolymer molding and excellent resistance to impact and wear, by blending an org. peroxide and vulcanized rubber powder in specified quantities. CONSTITUTION:0.004-0.2pts.wt. org. peroxide (A) having a half life temp. of 10hr at 90-135 deg.C, such as dicumyl peroxide, and 3-100pts.wt. vulcanized rubber powder (B), (e.g. powder having a particle size of 1mm. or below formed when rubber goods such as tire or belt are grinded) are blended with 100pts.wt. ultra- high-molecular-weight polyethylene powder (C) (viscosity-average MW: 1,000,000 or above, light scattering average MW: 3,000,000 or above).