Polypropylene resin and method for producing the same, polypropylene composition and use thereof
By introducing an ethylene propylene rubber phase into polypropylene resin and controlling the deformation index, a balance between high gloss and impact resistance of polypropylene materials under filler-filled conditions was achieved, solving the problem of difficulty in achieving both gloss and toughness in existing technologies.
CN122404841APending Publication Date: 2026-07-17SOUTH CHINA UNIV OF TECH +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SOUTH CHINA UNIV OF TECH
- Filing Date
- 2025-01-17
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing polypropylene materials struggle to achieve a balance between improving gloss and impact resistance, especially with a significant decrease in gloss when filled with fillers.
Method used
By using polypropylene resin containing an ethylene propylene rubber phase and controlling the deformation index D to 0.2-5, the rubber phase is ensured to have high fluidity and high dispersibility during processing, thereby improving gloss and toughness.
Benefits of technology
In the case of filler filling, the polypropylene composition maintains high gloss and excellent impact resistance, solving the balance problem between gloss and toughness.
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Abstract
本发明提供一种聚丙烯树脂及其制备方法、聚丙烯组合物及其应用，所述聚丙烯树脂包括丙烯均聚物和乙丙橡胶的组合；所述聚丙烯树脂的形变指数为0.2‑5；所述形变指数的计算公式为：D＝Mw1 / Mw2，其中，D表示形变指数，Mw1表示所述聚丙烯树脂中二甲苯不溶物的重均分子量，Mw2表示所述聚丙烯树脂中二甲苯可溶物的重均分子量。所述聚丙烯树脂的橡胶相与丙烯均聚物基体相容性好，橡胶相在加工过程中具有高流动性和高分散性，降低光的散射，使所述聚丙烯树脂具有高光泽度，同时具有优良的韧性和抗冲击性能，尤其能够充分满足填料填充情况下聚丙烯组合物的高光泽度要求。
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