一种羟基乳化硅油的合成与影响因素研究

摘要

The emulsified hydroxyl silicone oil was synthesized by one step method using dimethylcyclosiloxane (DMC) as raw material, tetramethylammonium hydroxide as catalyst, sodium dodecyl benzene sulfonate (SDBS) and alkyl glycoside as emulsifiers, glycerol as co-emulsifier. Three factors influencing the emulsification reaction and the properties of emulsified hydroxyl silicone oil were investigated:reaction time,temperature,the amount of catalyst.Results show that the following conditions give a maximum yield and best stability of the emulsified hydroxyl silicone oil: mass ratio of tetramethylammonium hydroxide to DMC=8 ‰,reaction temperature=70 ℃,reaction time=8 h.%以二甲基环硅氧烷(DMC)为原料、四甲基氢氧化铵为催化剂、十二烷基苯磺酸钠和烷基糖苷为乳化剂、甘油为助乳化剂、六甲基二硅氧烷为封端剂,通过阴离子型乳液聚合法制备羟基乳化硅油.研究了反应时间、反应温度、催化剂用量等因素对乳液聚合及羟基乳化硅油稳定性的影响.结果表明:催化剂四羟基氢氧化铵用量为DMC的8‰、反应时间为8 h、反应温度为70 ℃时,羟基硅油乳液的产率最高、稳定性最好.