核壳型有机硅改性丙烯酸聚氨酯乳液的合成研究

Study on synthesis of silane modified polyurethane acrylic emulsions of core-shell structure

采用乳液聚合的方法,制备了有机硅改性丙烯酸聚氨酯乳液,利用透射电子显微镜对乳液粒子的形态进行分析证明乳液粒子具有核壳型结构。讨论了有机硅种类和用量,对乳液成膜后的机械性能、光泽和耐热性的影响。结果表明:经有机硅改性的丙烯酸聚氨酯乳液,在附着力、稳定性、硬度。

Silane modified polyurethane acrylic emulsions were prepared by emulsion polymerization Through the morphological analysis of the emulsion particles with TEM, the core-shell structure was demonstrated The effects of the species and quantity of the silane on the mechanic performances, gloss and heat resistance of the film was discussed The result shows that the adhesion, stability, gloss and hardness were greatly promoted