采用化学方法制备了一种中空二氧化硅微球掺杂改性的聚氨酯水性分散体乳液,并采用扫描电镜、投射电镜、热失重、紫外-可见光吸收和涂膜力学性能等测试手段对该中空二氧化硅微球掺杂聚氨酯分散体及其涂膜的微观结构、热、光和力学等性能进行研究.实验结果表明,该乳液具有良好的室温贮存稳定性能,中空二氧化硅微球与水性聚氨酯分散体具有良好的相容性和协同增强效应.中空二氧化硅微球的掺杂改性不仅能够提高聚氨酯涂膜的耐热性能,显著提高水性聚氨酯涂膜的硬度和耐水性,同时该掺杂聚氨酯涂膜还具有优异的抗紫外光能力.
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