前沿聚合法制备聚双环戊二烯/纳米碳酸钙复合材料  

Preparation of PDCPD/Nano-CaCO_3 Composite by Frontal Polymerization

作　　者：李旭阳[1] 陈国伟[1] 高喜平[1] 张玉清[1] 

机构地区：[1]河南科技大学高分子科学与纳米技术重点实验室,河南洛阳471023

出　　处：《高分子材料科学与工程》2015年第9期173-177,183,共6页Polymer Materials Science & Engineering

基　　金：河南省杰出人才创新基金资助项目(074200510019)

摘　　要：采用纳米碳酸钙(nano-CaCO3)粒子作为填充剂,运用前沿聚合法合成聚双环戊二烯(PDCPD)。研究了复合材料的微观形貌、热性能及力学性能。微观形貌观察发现,CaCO3粒子以纳米尺寸均匀地分散在PDCPD基体中,并具有良好的结合界面;由热失重分析可知,加入一定量的nano-CaCO3粒子有利于改善复合材料的热稳定性;随着纳米粒子含量的增加,复合材料的冲击强度、拉伸强度、弯曲强度及硬度都有不同程度的提高,而断裂伸长率则逐渐下降;拉伸曲线表明,复合材料属于典型的刚而韧的材料。Polydicyclopentadiene/nano-CaCO3 composite was prepared by frontal polymerization with classical ring- opening metathesis catalyst system. The micromorphology and thermal property as well as mechanical properties of the composites were studied. The SEM indicates that. the nano-CaCO3 particles are dispersed in polydicyclopentadiene matrix at the nanoscale, at the same time there is a good combination of interface. Known by the TGA that a certain amount of nano-CaCO3 will help to improve the thermal stability of the composites. The results show that with the increase of nano-CaCO3 particles content, the impact strength, tensile strength, flexural strength and hardness of the composites increase to different extent, but the elongation at break of the composites decreases gradually. Tensile test curve shows that the composites are typically high rigidity and high toughness material.

关 键 词：双环戊二烯 前沿聚合 纳米碳酸钙 

分 类 号：O632.15[理学—高分子化学]