聚醚接枝聚硅氧烷共聚物改进环氧树脂表面性能的研究  

Surface Properties of Epoxy Resins Modified by Polyether-grafted Polysiloxanes

作　　者：孙秀武[1] 黄英[1] 余云照[1] 

机构地区：[1]中国科学院化学研究所

出　　处：《应用化学》2000年第4期353-357,共5页Chinese Journal of Applied Chemistry

摘　　要：通过氢硅烷化反应制备了聚醚接枝聚硅氧烷共聚物 ,将它与环氧树脂共混 ,研究了共聚物的结构与用量对改性环氧树脂固化物的微观形态与表面性能的影响 .结果表明 ,引入聚硅氧烷明显降低了环氧树脂的静摩擦系数 ,增大了其对水的接触角 .共聚物中接枝聚醚链段的结构与聚醚含量以及环氧树脂中共聚物的加入量是影响改性环氧树脂的微观形态与表面性能的最重要因素 .表面组成的 XPS分析表明 ,聚硅氧烷链段在材料表面明显富集 ,从而大大降低了环氧树脂的静摩擦系数 ,增大了对水的接触角 .Polyether g polysiloxane copolymers were prepared through hydrosilylation and used as a modifier for epoxy resin. The results indicated that the static friction coefficient of the cured epoxy resin was effectively reduced by the incorporation of the copolymers, and the contact angle with water enhanced. The morphology and surface properties of the cured epoxy resin depended mainly on the structure and content of polyether chains in the graft copolymers, as well as the level of the copolymer. The surface composition of the cured epoxy resin was analyzed by XPS. It was suggested that remarkable enrichment of the polysiloxane chain on the surface of the cured epoxy resin was responsible for the improvement of the surface properties. [WT5HZ]

关 键 词：环氧树脂 共混改性 形态 表面性能 

分 类 号：O633.13[理学—高分子化学]