以丙烯酸类乳液为成膜物质,以季戊四醇、三聚氰胺、聚磷酸铵与无机增强填料作为阻燃体系,制备了水性超薄型钢结构防火涂料.采用模拟大板燃烧法对防火涂料的耐火性能进行了研究,系统考察了乳液种类、颜基比以及无机填料对防火性能的影响,确定了无机填料的最佳用量.研究结果表明:以硅丙乳液作为基料树脂,当体系颜基比为3.5以及珍珠岩的添加量为7%时,防火涂料的耐火时间能达到128.7 min;珍珠岩与炭质层的生成具有明显的协同效应,这大大提高了炭质层的强度,而且还表现出显著的隔热效果.
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