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采用一种可以与氯乙烯(VC)发生共聚反应的可反应性纳米SiO2,通过原位悬浮聚合的方法制备了PVC/SiO2纳米复合材料。通过TGA、XPS分析,说明可反应性的纳米SiO2与PVC之间存在强烈的化学作用;考察了该纳米复合材料的微观形貌、力学性能,结果发现纳米SiO2在PVC基体中分散良好,含量为0.3%时,材料的拉伸强度、杨氏模量和断裂伸长率有最佳值,提出了纳米SiO2与PVC相互作用的机理。
PVC / SiO2 nanocomposites were prepared by in-situ suspension polymerization using a reactive nano-SiO2 copolymerized with vinyl chloride (VC). Through TGA, XPS analysis, indicating that there is a strong chemical reaction between the reactivity of nano-SiO2 and PVC; the microstructure and mechanical properties of the nano-composite were investigated. It was found that the nano-SiO2 dispersed well in the PVC matrix with a content of 0.3%, the tensile strength, Young’s modulus and elongation at break have the best value, and the mechanism of the interaction between nano-SiO2 and PVC is proposed.