车用聚丙烯内饰材料耐划伤性能研究

采用衰减全反射红外光谱(ATR)研究酰胺类耐划伤剂在车用聚丙烯(PP)耐划伤内饰材料表面和内部的含量分布.ATR及十字划格实验结果表明,酰胺耐划伤剂能有效地迁移到材料表面,降低表面摩擦系数,且酰胺耐划伤剂在材料表面和内部的分布有所差异.ATR及扫描电子显微镜(SEM)证明车用PP耐划伤内饰材料呈皮芯结构,未加入耐划伤剂...

STUDY OF SCRATCH RESISTANCE PROPERTY OF POLYPROPYLENE INTERIOR MATERIAL FOR AUTOMOBILE

The content distribution of amide anti-scratch agent on the surface and in the internal of polypropylene scratch-resistance interior material for automobile was investigated by attenuated total reflection infrared spectrum(ATR).The results of ATR and cross cut test showed that the anti-scratch agent could migrate to the surface of material effectively and decreased the coefficient of skin friction,while the content distribution of amide anti-scratch agent on the surface was different from the internal.The ATR and Scanning Electron Microscope(SEM) confirmed that the skin-core morphology of polypropylene interior material.The skin of sample,with the "stick-slip" phenomenon,was damaged seriously without adding anti-scratch agent,but the scratch scar depth of sample with adding anti-scratch was shallow.When the mass fraction of anti-scratch agent was more than 2%,the scratch resistance of material was improved and the color difference ΔL between before-scratching and after-scratching was smaller than 1.The polypropylene scratch-resistance interior material had been applied to automobile interior parts.