摘要
为了改善纳米碳酸钙在聚氯乙烯(PVC)基体中的分散性和相容性,分别采用十八胺、十二胺和辛胺与马来酸酐反应,制备出三种改性剂;然后分别用这三种改性剂对纳米碳酸钙进行湿法改性,制备了PVC/纳米碳酸钙复合材料,系统研究了改性纳米碳酸钙对PVC复合材料力学性能的影响。结果表明:三种改性剂均可以与纳米碳酸钙表面结合,阻止了纳米碳酸钙的团聚,改性后的粒子可以均匀地分散在PVC基体中;三种改性剂改性的纳米碳酸钙都可以显著提高PVC复合材料的缺口冲击强度,但其弯曲强度和拉伸强度变化不大。
In order to improve the dispersion and compatibility of nano-CaCO3 in PVC, three different modifiers were synthesized by the reaction of MA and octadecanamine, dodecanamine and octylamine, respectively. Wet modification was used to treat the surface of nano-CaCO3 and PVC/ nano-CaCO3 composites were prepared. The influence of modified nano-CaCO3 with different modifiers on the mechanical properties of PVC composites was investigated systematically. The results show that three kinds of modifier can be combined with the surface of nano-CaCO3 well, and the nano-CaCO3 can be evenly dispersed in PVC. Modified nano-CaCO3 by three kinds of modifiers can dramatically increase the impact strength of the PVC composites, and the flexural strength and tensile strength of the PVC composites change slightly.
出处
《塑料科技》
CAS
北大核心
2015年第5期85-89,共5页
Plastics Science and Technology
基金
上海市科学技术委员会资助课题(12nm0502800)
