摘要
对纳米二氧化钛的改性方法进行了优化。研究了环形反应器类型、反应温度、pH对纳米二氧化钛改性效果的影响。粒径分析结果表明,最佳改性温度为80℃,pH为10,环形反应器可以提高纳米二氧化钛的分散效果。扫描电镜观察结果表明,改性后纳米二氧化钛的团聚现象得到改善,在聚氯乙烯中分散良好。改性后的纳米二氧化钛提高了聚氯乙烯复合材料的拉伸强度和断裂伸长率。
The modification method of Nano-TiO_2 was optimized. The influences of ring reactor type, reaction temperature, reaction pH on Nano-TiO_2 modification effect were investigated. The results of particle size analysis showed that the optimum modification temperature was 80℃ and pH was 10. The dispersion effect of Nano-TiO_2 in the ring reactor was better than the traditional reactor. The SEM showed that the aggregation of the modified TiO_2 was improved and well dispersed in PVC. And the tensile strength and elongation at break of PVC composite were improved by the modified Nano-TiO_2.
引文
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