氟硅改性苯丙无皂乳液的制备和性质研究

以N-烯丙基全氟戊基磺酰胺、乙烯基三乙氧基硅烷、苯乙烯、丙烯酸丁酯、丙烯酸为主要单体,马来酸酯为反应性乳化剂,过硫酸铵为引发剂,通过乳液聚合制备了有机氟硅改性苯丙无皂乳液.讨论了聚合工艺、聚合温度、水用量、氟硅单体用量对乳液性能的影响.结果表明,采用预乳化法、反应性乳化剂的质量分数2.5%、水的质量分数50%～60%、乙烯基三乙氧基硅烷的质量分数为1.6%、N-烯丙基全氟戊基磺酰胺质量分数为1%、聚合温度75～80℃、聚合时间5～6 h时,单体转化率较高,改性乳液的稳定性较好、乳胶膜的吸水率和表面张力大大降低.

Preparation and Properties of Styrene-acrylic Emulsion Modified by Organofluorine-silicone

Styrene-acrylic emulsion was prepared with N-alyl-perfluoropentyl sulfonamide,styrene,butyl acrylate,acrylic acid and vinyltriethoxysilane(VTES) by polymerization.Polymerization temperature,dosage of the water and fluorine-silicon monomer were discussed.The results showed that the property and stability of modification emulsion were high compared with ordinary styrene-acrylic emulsion in conditions of using pre-emulsification method,3% reactive emulsifier,1.6% silicone and 1% fluorine containing monomer,and...