Effect of Composition on Waterproofing Property of Silicone Modified Polyacrylate Emulsion-Sulphoaluminate Cement Composite Coating: Optimization by Response Surface Methodology
Effect of Composition on Waterproofing Property of Silicone Modified Polyacrylate Emulsion-Sulphoaluminate Cement Composite Coating: Optimization by Response Surface Methodology
复制标题
组成对有机硅改性聚丙烯酸酯乳液-硫铝酸盐水泥复合涂料防水性能的影响：响应面法优化
DOI：
10.1007/s10904-018-1013-6
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发表时间：
2019
影响因子：
4
通讯作者：
Cheng Xin
中科院分区：
文献类型：
--
作者：
Liu Honghua;Zhao Piqi;Lu Lingchao;Wang Shoude;Chen Mingxu;Cheng Xin
聚合物改性胶凝涂料被认为是最有前途的防水材料之一。在提高防水性能的基础上，采用响应面法（RSM）对硅酮改性聚丙烯酸酯乳液(SPA)-硫铝酸盐水泥（SAC）复合涂料（SSCC）的组成进行了优化。以SAC与SPA、REP（再分散乳化粉）与SPA、sio2与SPA的比例为最重要的影响因素。结果表明，二次多项式模型与实验数据拟合较好，吸水系数r2和adj - r2分别为0.9852和0.9662。SAC/SPA和REP/SPA的变化差异非常显著。随着SAC与SPA比例的增加，SSCC的吸水率先降低后升高。由REP/SPA引起的趋势是逐渐减少的。相比之下，SiO2/SPA的影响并不显著。综合考虑所有因素，SAC/SPA的最佳范围为0.8-1.0，REP/SPA为0.10-0.11，SiO2/SPA为1.1-1.3。此时吸水率可降至4.25%。
Polymer-modified cementitious coatings are considered to be one of the most promising waterproofing materials. In this paper, response surface methodology (RSM) is used to optimize composition of silicone modified polyacrylate emulsion (SPA)-sulphoaluminate cement (SAC) composite coating (SSCC) based on improvement of waterproofing property. Being considered as the most important factors, the ratios of SAC to SPA, REP (redispersion emulsion powder) to SPA and SiO2to SPA are studied. The results show that the quadratic polynomial model fits experiment data fairly well, and R2and Adj-R2values for water absorption are 0.9852 and 0.9662, respectively. The differences observed from variation of SAC/SPA and REP/SPA are extremely significant. The water absorption of SSCC decreases first and increases afterwards with increasing the ratio of SAC to SPA. And a trend caused by REP/SPA is gradually decreasing. By contrast, the factor of SiO2/SPA is not that significant. The optimal ranges, taken all factors into consideration, are 0.8–1.0 for SAC/SPA, 0.10–0.11 for REP/SPA and 1.1–1.3 for SiO2/SPA. In this case, the water absorption ratio can drop to 4.25%.