无机纳米粒子改性复合防水乳液及其制备方法

Inorganic nano particle modified composite waterproof emulsion and preparation method thereof

Abstract

The invention provides inorganic nano particle modified composite waterproof emulsion and a preparation method thereof and belongs to the technical field of preparation of an exterior wall water-based paint. The composite waterproof emulsion comprises the following components in percentage by mass: 2 to 3 percent of acrylic acid, 15 to 20 percent of methyl methacrylate, 12 to 16 percent of butyl acrylate, 1 to 3 percent of other monomers, 2.4 to 4.8 percent of modified nano particle mixture, 1.5 to 3 percent of complex emulsifying agent, 0.4 to 0.8 percent of initiator, 2.4 to 4.8 percent of organic silicone monomer, a right amount of pH regulator, 45 to 55 percent of deionized water and 0.3 to 0.7 percent of buffering agent. In the invention, the addition speed, the addition ratio and the stirring speed of nano particles are strictly controlled. Compared with emulsion which is not modified, the prepared emulsion provided by the invention has the advantage that the waterproofness, themechanical strength, the self-cleaning property and the aging resistance of the emulsion are improved.
本发明提供一种无机纳米粒子改性复合防水乳液及其制备方法,属于外墙水性涂料制备技术领域。该复合防水乳液的组成及质量百分比为:丙烯酸2~3%;甲基丙烯酸甲酯15~20%;丙烯酸丁酯12~16%;其它单体1~3%;改性纳米粒子混合物;2.4~4.8%;复合乳化剂1.5~3%;引发剂0.4~0.8%;有机硅单体2.4~4.8%;pH调节剂:适量;去离子水45~55%;缓冲剂0.3~0.7%。本发明严格控制纳米粒子的加入速率、加入比例、搅拌速度,制得的乳液与改性前相比较,提高了乳液的防水性、机械强度、自清洁性、抗老化性。

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Patent Citations (3)

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NO-Patent Citations (1)

    Title
    徐瑞芬等: "原位聚合法制备纳米TiO2/有机硅改性丙烯酸酯复合乳液", 《有机硅材料》, vol. 17, no. 6, 31 December 2003 (2003-12-31), pages 11 - 14

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