High-transparency rigid-tough balanced polypropylene composition and preparation method of blow-molded product of high-transparency rigid-tough balanced polypropylene composition

The invention relates to a high-transparency rigid-tough balanced polypropylene composition and a preparation method of a blow-molded product thereof. The composition is mainly used for manufacturing products such as storage boxes and the like. The polypropylene random copolymer is used as base resin, the elastomer SEBS, the novel stiffening nucleating agent and other auxiliaries are added, the polypropylene composition with high transparency, high gloss and balanced rigidity and toughness is obtained through twin-screw extrusion granulation, the nucleating agent is added for the second time during product blow molding, and the obtained polypropylene product is attractive and not prone to damage. 本发明涉及一种高透明刚韧平衡的聚丙烯组合物及其吹塑制品的制备方法，主要用于制作收纳盒等产品。本发明以无规共聚聚丙烯为基础树脂，通过添加弹性体SEBS、新型增刚成核剂和其他助剂，经双螺杆挤出造粒，得到高透明高光泽、刚韧平衡的聚丙烯组合物，并且吹塑过制品时二次加入成核剂，得到的聚丙烯制品美观且不易损坏。