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powder filling polypropylene (PP) scratch resistant performance effect/influence factors
矿 powder filling polypropylene (PP) （PP） as is most 广泛 一 type modified PP材 material, very good PP resistant temperature property 差, easy warpage deformation, molding shrinkage large defect, and can in 一定程 degree upper reduce material cost, from large degree expand PP in home appliances, automotive, toys, and other field/area application. powder filling PP strong/high degree relatively low, material surface easy by outer force 刮伤, make product appearance 不佳并造 formed 一定程 degree force in in use safety 风险. is 此, group corporation has company through melt blending made 备 矿 powder filling polypropylene (PP) (PP) composite/compounding material, 探究 矿 powder types type, different tough property resin and lubricant for filling PP resistant scratch property can effect/influence.
1, 矿 powder types type effect/influence selection powder has slip powder , carbon acid 钙, silicon 灰石, this 3 types powder for PP resistant scratch property can effect/influence lower: （1）添 add types powder rear, PP resistant scratch property can has reduce; （2） in types powder filling PP in, silicon filling PP resistant scratch property can most good, carbon acid and slip powder filling PP resistant scratch property can versus large; （3）以20% slip powder 填充PP is 例, in formulation in add year-on-year maleic anhydride grafted polypropylene (PP) （PP-g-MAH） rear, material resistant scratch property can 随PP-g-MAH content increase improve/increase, 当PP-g-MAH quality separation to 12%之 rear stability; （4）以20% slip powder filling PP is 例, slip powder decrease small, material resistant scratch property can improve/increase, 当 slip powder is 4 μm时, material resistant scratch property can most good. 2, 基体 resin effect/influence 以20% slip powder filling PP is 例, selection PP基体 resin has homopolymer PP, copolymer PP, high crystallization PP and toughened PP[ toughened PP基体由 copolymer PP, homopolymer PP and type low density polyethylene (PE) （PE–LLD）组 formed, quality ratio is 37／35／8], 实验发现以 toughened PP is 基体 材 material resistant scratch property can most good, its is copolymer PP, homopolymer PP and high crystallization PP. 3, lubricant effect/influence 以20% slip powder filling PP is 例, selection lubricant is acid amine and silicon ketone masterbatch, 实验发现, lubricant content increase, material resistant scratch property can good, its in acid amine type lubricant in quality separation 数约 is 0.5%时就 can to relatively good resistant scratch 效果, to same resistant scratch 效果 need add 入约5% silicon ketone. in content lower again 继续 increase type lubricant content for PP resistant scratch property can improves again obvious. summary in 本实验 scope/range inner to 结论如 lower: （1）矿 powder hardness high, 粒径越 small, and adhesion function force large, dispersion property good, has increase material anti-scratch 形变 can force. （2）矿 powder filling PP in can active separation 子链越 more, material 塑 property 形变恢复 can force strong/high, resistant scratch property good. in add less amount PE–LLD rear, can improves PP材 material in generate property 形变 rear can force, and can reduce PP surface scratch 系数, large degree decrease/reduce scratch rear material surface deep degree and wide degree, improves material resistant scratch property. （3）添 add a small amount of acid amine or a small amount of silicon ketone in 材 material surface formed good lubricated film, 但随 两者 content 继续 increase, powder filling PP resistant scratch property can improves again obvious.
