聚乙烯醇硅溶胶系水性建筑涂料

PVA-Silicasol Waterborne Architectural Coatings

采用一种无机改性交联剂可以有效屏蔽聚乙烯醇(PVA)上部分羟基,改性后的PVA与硅溶胶产生半互穿网络(Semi-IPN)连接,形成复合胶。所得的复合胶既有聚乙烯醇的优良成膜性,又有硅溶胶的耐水性和硬度,再加入优质廉价的颜填料,适当调节体系性能,便可生产出性价比高的环保水溶性建筑涂料。

The use of an inorganic modified - crosslinker could effectively shield off part of the hydroxyl group in polyvinyl alcohol（PVA） , and the modified PVA and silicasol formed a semi -interpenetrating network（ semi- IPN） connection, resulting a compound adhesive. The compound adhesive could provide good fihn forming ability of PVA, as well as the water resistance and film hardness of the siliconsol. Adding quali- ty cheap pigments and fillers in the compound adhesive and properly adjusting system performance, a cost - effective, environmental friendly watersoluble architectural coatings could be formulated.