摘要
研究纳米CaCO3/PVC复合材料的微观结构、力学性能及流变性能,SEM观察复合材料冲击缺口的断面微观形态和纳米CaCO3粒子在PVC中的分散情况.结果表明:在PVC共混体系中加入纳米CaCO3可明显提高材料的韧性.当CaCO3用量在10份左右时,纳米CaCO3/PVC复合材料的冲击强度达到最大值,是普通CaCO3/PVC复合材料冲击强度的2倍,且复合材料的拉伸强度也略有提高.在流变学研究方面,纳米CaCO3/PVC复合材料与普通CaCO3/PVC复合材料同是假塑性流体.
The microscopic structure and the mechanical and thermal properties of PVC/CaCO3 composite were studied in this paper. The micro conformation of impact surface and the dispersion of thenanometer particle were analyzed by using SEM. The results showed that the toughness of PVC composite increased dramatically by the addition of nano-CaCO3 particles. Impact strength of the PVC nanocomposite reached the maximum when the mass ratio of nano-CaCO3/PVC was about 10 % （by mass）, which was twice the impact strength of the composites without nano-CaCO3 particles and the tensile strength of the composites also improved marginally. The rheological research indicated that both of them are pseudoplastic.
出处
《沈阳化工学院学报》
2007年第4期268-271,共4页
Journal of Shenyang Institute of Chemical Technolgy
