汽车用薄壁注塑高流动高刚性聚丙烯复合材料的制备及表面优化

该论文为汽车用薄壁注塑高流动性高刚性聚丙烯(PP)复合材料的制备及优化.通过在配方中组合采用高流动抗虎皮纹PP、包覆型滑石粉母粒(解决滑石粉与PP的相容性)、三元共聚PP(解决乙烯-辛烯共混物(POE)与PP的相容性)三种主要材料,以及K树脂、有机硅和其他助剂,再结合薄壁注塑模具在加强筋、卡扣部位的专门设计,结合了材料...

Preparation and Surface Optimization of Thin-wall Injection Molded Polypropylene Composites with High Flow and Rigidity for Automobiles

The preparation and optimization of thin-walled injection molding high-fluidity and high-rigidity polypropylene composite materials for automobiles were introduced.A thin-wall injection molding high-fluidity and high-rigidity polypropylene composite material for automobiles was obtained by using the combination of high-flow anti-tiger skin texture polypropylene(PP),coated talc masterbatch(to solve the compatibility of talc and PP),ternary copolymer PP[to solve the compatibility of ethylene and octene copolymer(POE)and PP]three main types,as well as K resin,silicone and other additives,combining with the special design of the thin-wall injection mold in the reinforcement and buckle parts,comprehensively combining the crystallization,fluidity,dispersion,compatibility,shear viscosity and process and other factors.The materials have a density of 1.05 g/cm³,a melt index of 45 g/10min,a flexural modulus(maximum)1919 MPa,and an impact strength of 42 kJ/cm².The tensile strength is 19 MPa,the thickness of the molded product is 2.1 mm(≤2.2 mm),and the surface of the manufactured part has no sink marks or deformation.