【摘要】 用未经表面处理和经表面处理的纳米 Ti O2 对不饱和聚酯 ( UP)树脂进行填充改性。研究了纳米Ti O2 用量对不饱和聚酯树脂的拉伸强度、弯曲强度、冲击强度、断裂伸长率的影响。结果表明 ,经表面处理的纳米 Ti O2 用量为 4 %时 ,材料的增韧增强效果最好。用 DSC测定复合材料的玻璃化温度 ( Tg) ,可以发现复合材料的玻璃化温度比纯不饱和聚酯树脂大 ,且经处理的填充的复合材料的 Tg 更高 ,这与力学性能结果相一致更多还原

【Abstract】 In this paper, unsaturated polyester resin was modified by filling treated and untreated nano titanium dioxide. The effects of content of nano TiO 2 on the tensile strength, bending strength, impact strength and elongation at break of UP were studied. The results show that, when the content of treated nano TiO 2 is 4%, the mechanical properties are optimal. The glass temperature( T g) of composite materials were measured by DSC. It is found that the T g of composite materials is higher than that of UP resin, and the composite materials of treated TiO 2 has a higher T g, which is in agreement to the results of mechanical properties.更多还原