建筑用水性有机硅憎水剂的制备及性能研究  

Research on the preparation and properties of water repellent based on waterborne silicone

作　　者：夏小丹[1] 张雄[1] 张永娟[1] 

机构地区：[1]同济大学建筑材料研究所先进土木工程材料教育部重点实验室,上海200092

出　　处：《新型建筑材料》2010年第11期75-77,共3页New Building Materials

摘　　要：将3%～5%的E型异构醇醚系乳化剂和有机硅预先混合搅拌,再加入适量助剂和部分去离子水充分乳化,控制乳化用水量为40%左右,最后调节pH值,成功制备出稳定性良好的聚甲基硅氧烷类建筑用水性有机硅憎水剂。乳液室内贮存6个月,无分层漂油等现象。研究了乳化剂用量与乳液憎水性能的关系,结果表明,乳化剂用量为2.5%～4.5%时,憎水效果最好,与其对乳液稳定性影响得出的结论相近,说明乳液稳定性对其使用效果影响较大。自制憎水乳液稀释稳定性良好,稀释10～50倍憎水效果无明显波动。This paper successfully prepared the poly methyl siloxane bydrophobic agent through the following process：firstly, the 3%-5% E emulsifier（belonged to isomerism alcohol ether system）and silicone material were pre-mixed;then well-emulsified by adding appropriate additives and some deionized water：moreover, put the residual water into the emulsion until it reached 40% of the total expenditure;finally adjusted pH of the emulsion. The phenomenon of layering and drift-free was not found within 6 months indoor. Furthermore,the relationship between the amount of emulsifier and the hydrophobic properties was investigated. The results show that the hydrophobicity was the best when the amount of emulsifier is 2.5%-4.5%,and it was similar to the influence on the emulsion stability, indicating emulsion stability deeply affected the effects of its use. The hydrophobic emulsion has stable dilution,dilution of 10-50 times,no significant fluctuations about the hydrophobic effect.

关 键 词：有机硅憎水剂 乳化工艺 稳定性 

分 类 号：TU572[建筑科学—建筑技术科学]