作　　者： ; ; ; ; ; ;

机构地区： 青岛科技大学高分子科学与工程学院橡塑材料与工程教育部重点实验室

出　　处： 《橡胶工业》 2009年第7期398-401,共4页

摘　　要： 采用聚二甲基二烯丙基氯化铵(PDDA)对二氧化硅进行表面改性,制备改性二氧化硅/NR纳米复合材料,并对其微观结构和物理性能进行研究。结果表明,改性二氧化硅均匀分散在天然胶乳基体中;扫描电子显微镜分析显示复合材料呈界面模糊的海岛结构;改性二氧化硅/NR纳米复合材料的物理性能较NR胶料大幅提高;随着改性二氧化硅用量的增大,改性二氧化硅/NR纳米复合材料的物理性能先提高后降低;当改性二氧化硅的用量为5.3份时,纳米复合材料的综合物理性能较好。 The surface of silica was modified by polydimethyl diallylammonium chloride, and the modified siliea/NR nanocomposite was prepared, and its microstructure and physical properties were investigated. The results showed that modified silica was uniformly dispersed in nature rubber latex;it was found by SEM that there was sea-island structure without clear phase boundary in silica/NR nanocomposite; compared with NR compound, the physical properties of modified silica/NR nanocom posite increased significantly;as the addition level of modified silica increased,the physical properties of modified silica/NR nanoeomposite increased first and then decreased; when the addition level of modified silica was 5.3 phr,the composite possessed better comprehensive physical properties.

关 键 词： 改性二氧化硅 天然胶乳 纳米复合材料 微观结构 物理性能

领　　域： [化学工程] [化学工程]