基于溶液在非饱和孔隙结构中的毛细作用理论,涂料渗透深度主要受孔隙结构以及涂料的表面张力、接触角、黏度和作用时间等因素影响.本文利用酚酞遇碱显色原理,研究了水玻璃涂料的表面张力与接触角、黏度以及涂刷量对其在水泥基复合材料中渗透深度的影响规律.试验结果表明:添加表面活性剂降低水玻璃涂料的接触角,适当降低固含量以降低涂料黏度,或增加涂刷量均能提升涂料在水泥基复合材料表层的渗透深度.
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