【摘要】 讨论了发泡助剂纳米ZnO、普通ZnO、复合助剂对发泡剂分解及在聚丙烯基体中形成微孔的影响。通过TG技术讨论发泡剂、发泡剂加不同助剂在塑料中热分解的影响,扫描电镜观察助剂在塑料中的分散情况,复合助剂较好。并对不同助剂的PP发泡材料进行性能的比较和探索,冲击强度得到极大提高;筛选出了制备优质PP微孔发泡材料的理想发泡助剂。更多还原

【Abstract】 The effects of three foaming accelerators,ZnO,nanometer ZnO,and ZnO/Zn(st)2,on the thermal decomposition property of foaming agents and the ability to create microcellular foam in polypropylene(PP) microcellular foaming plastics are studied.The influence of these accelerators on the microcellular structure of PP microcellular foaming plastics is analyzed by using a thermogravimetry technique.The dispersion of foaming accelerators in resins is observed using scanning electron microscopy.It is shown that the compositing foaming accelerators exhibite a comparatively better dispersion.The properties of different accelerators containing foaming materials are investigated and compared.Compared to those without foaming accelerators,the impact strength of PP microcellular foaming plastics with foaming accelerators is significantly enhanced.更多还原