采用熔融复合的方法制备了纳米TiO2/聚碳酸酯-聚丙烯(TiO2/PC-PP)光扩散复合材料.分别采用SEM和DSC研究了纳米TiO2/PC-PP复合材料的微观结构和等温结晶性能,并研究了复合材料的热稳定性与光学性能.结果表明:纳米TiO2的加入使得光扩散体系中分散相的平均尺寸变小,形态更加均一,并且随着复合材料中纳米TiO2质量分数的增加,复合材料的半结晶时间逐渐延长,总体结晶速率变慢.纳米TiO2的加入使复合材料的初始热降解温度以及最终残余量升高,当PP中纳米TiO2质量分数为5％时,复合材料的透光率达到80％,雾度为88％,此时纳米TiO2/PC-PP复合材料的光扩散性能较好.
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