中空SiO_2微球及聚丙烯酸酯/中空SiO_2复合乳液的研究  

Research on hollow silica spheres and polyacrylate/hollow silica composite emulsion

作　　者：鲍艳[1] 岳海鹏[1] 时春华[1] 杨永强[1] 

机构地区：[1]陕西科技大学资源与环境学院,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2015年第2期19-22,26,共5页Journal of Shaanxi University of Science & Technology

基　　金：教育部新世纪优秀人才支持计划项目(NCET-13-0885);陕西省教育厅重点实验室科研计划项目(13JS016);国家级大学生创新创业训练计划项目(201310708015);陕西科技大学科研创新团队计划项目(TD12-03)

摘　　要：采用乳液聚合法合成聚苯乙烯微球,将其作为模板,以正硅酸乙酯和乙烯基三乙氧基硅烷为硅源,制备中空SiO2微球.采用透射电子显微镜对中空SiO2微球的形貌进行表征,并对中空SiO2微球的制备工艺进行优化.然后,采用原位乳液聚合法制备了聚丙烯酸酯/中空SiO2复合乳液.对加入中空SiO2微球前后乳液涂膜各项性能进行了测试,结果表明,中空SiO2微球可以显著提高聚丙烯酸酯乳液涂膜的透水汽性、耐水性和抗张强度,但断裂伸长率有所降低.Polystyrene（PS）spheres were first synthesized by emulsion polymerization,and hollow silica spheres were prepared using PS spheres as templates,ethyl orthosilicate and vinyl triethoxysilane as the silicon sources.The morphology of hollow silica spheres were characterized by transmission electron microscopy,and the preparation process of them were optimized.Then polyacrylate/hollow silica composite emulsion was synthesized by in-situ emulsion polymerization.Performance testing for polyacrylate film and polyacrylate/hollow silica composite film were carried out,and the results showed that the hollow SiO2 spheres can significantly improve the water vapor permeability,water resistance and tensile strength of polyacrylate film,but decrease its elongation at break.

关 键 词：聚丙烯酸酯 中空二氧化硅 透水汽性 

分 类 号：TB34[一般工业技术—材料科学与工程]