含氢硅油乳液的合成及在磷石膏防水中的应用  

The synthesis of hydrosilicon oil emulsion and its application in the phosphogypsum waterproofing

作　　者：金旭[1] 鲁圣军[2] 胡宗超[1] 王彩红[1] 周秉正[1] 

机构地区：[1]贵州大学化学与化工学院,贵州贵阳550025 [2]贵州大学材料与冶金学院,贵州贵阳550025

出　　处：《新型建筑材料》2013年第9期62-64,共3页New Building Materials

摘　　要：研究了含氢硅油乳液的制备工艺,考察了含氢硅油乳液掺量对石膏砌块吸水率、软化系数及强度的影响,并在含氢硅油乳液最佳用量基础上加入一定量的丙烯酸酯与石蜡复配防水乳液A,增强了磷石膏的防水性能。结果表明:在HLB值为9.7,乳化剂用量为含氢硅油质量的40%,搅拌速度为1000 r/min,m(水)∶m(含氢硅油)=2.6∶1.0时制备的含氢硅油乳液性能稳定。其用量为磷石膏质量的2%时,制得的石膏砌块抗压强度为7.23 MPa,24 h吸水率为20.5%,软化系数为0.64。加入2%含氢硅油基础上再掺入磷石膏质量6%的防水乳液A后24 h吸水率降为18.4%,软化系数升至0.76,24 h浸水断裂强度提高到9.69 kN。The preparation technology of hydrosilicon oil emulsion was studied in this paper. And the effects of the addition of hydrosilicon oil emulsion on the softening coefficient,water absorption and strength of the gypsum block were also investigated. Then we strengthen the waterproofness of phosphogypsum by adding a certain amount of waterproof emulsion A （compound mix of acrylate and paraffin） into the optimum dosage of hydrosilicon oil emulsion. Result： the hydrosilicon oil emulsion with a good sta- bility was prepared under the condition of HLB=9.7,the quantity of emulsifier is 40% of the hydrosilieon oil,the mixing speed is 1000 r/min and the emulsifying water （Mwater/M hydrosilicon oil） is 2.6. When the quantity of hydrosilieon oil emulsion is 2% of phosphogypsum, a gypsum block was prepared,and its compressive strength is 7.23 MPa,24 h water absorption is 20.5%,and soft- ening coefficient is 0.64. And,when the addition of waterproof emulsion A is 6% of phosphogypsum, its water absorption after 24 h dropped to 18.4%,the softening coefficient rose to 0.76 and the water soaking breaking strength rose to 9.69 kN.

关 键 词：含氢硅油 乳化 磷石膏 软化系数 吸水率 

分 类 号：TU572[建筑科学—建筑技术科学]