中空SiO2微球对聚丙烯酸酯薄膜性能的影响∗

摘要

Hollow silica microspheres were introduced into polyacrylate emulsion by physical blending approach. The effect of hollow cavity and wall thickness of hollow silica microspheres on insulation resistance,water re-sistance,alkali resistance and mechanical properties of polyacrylate film were investigated.The results showed that hollow SiO2 microspheres can enhance the thermal insulation properties,water and alkali resistance,and mechanical properties of polyacrylate film.The hollow cavity and wall thickness of hollow SiO2 microspheres have a significant impact on the performance of composite films.With increasing of the hollow cavity and wall thickness of hollow SiO2 microspheres,the properties of composite films were basically first upgrade and then decrease.%将中空二氧化硅(SiO2)微球通过物理共混的方式引入到聚丙烯酸酯薄膜中，考察中空 SiO2微球空心粒径和壁厚对聚丙烯酸酯薄膜保温性能、耐水性能、耐碱液性能和力学性能的影响。结果表明，中空 Si O 2微球的加入可提升聚丙烯酸酯薄膜的保温性能、耐水性能、耐碱液性能和力学性能。中空 Si O 2微球的空心粒径和壁厚对复合薄膜的各项性能均有显著影响，随着中空Si O 2微球空心粒径和壁厚的增加，复合薄膜的各项性能基本上都呈现先提升后降低的趋势。