Long chain branching a high-transparent polypropylene / elastomer composition and preparation method

The present invention discloses a highly transparent long-chain branched polypropylene / elastomer composition, which feed comprises the following components: 100 parts by weight of polypropylene; 0.05-5 parts by weight of peroxide; 5-40 parts by weight of elastomer; Anti 0.01 to 1 part by weight of acid-scavengers; clarifying agent 0.01 parts by weight; 0.01 parts by weight of a lubricant, the polypropylene has a melt index of 5-20g / 10min. The present invention has high transparency long unexpected synergistic effect between the components of the branched raw polypropylene / elastomer composition of the present invention is prepared by supercritical fluid mixture such that the raw material components to obtain a uniform dispersion, the resulting high sheer branched polypropylene / elastomer composition is excellent in overall performance, with high transparency properties, melt strength, stiffness and toughness.