摘要：

以绢云母和海泡石为添加剂改善水性膨胀防火涂料的防火性能。 研究了绢云母和海泡石对水性膨胀防火涂料性能的影响，并以绢云母替代部分季戊四醇和三聚氰胺制备了水性硅丙膨胀防火涂料。 结果表明：通过添加适量的绢云母和海泡石，水性膨胀防火涂料的膨胀炭层强度、防火性能得到了很大改善。 当绢云母用量为 10%、季戊四醇和三聚氰胺的用量为 5%和 10%时，制备的水性硅丙膨胀防火涂料的防火性能最好，膨胀炭层致密、强度高，耐火时间超过3 600 s。

关键词: 水性, 膨胀型防火涂料, 绢云母, 海泡石

Abstract: The fire-proofing performance of waterborne intumescent fire retardant coatings was improved with addition of sericite and sepiolite. The influence of sericite and sepiolite on the properties of waterborne intumescent fire retardant coatings was also studied. Waterborne silicone-acrylic intumescent fire retardant coatings were prepared wherein pentaerythritol and melamine were partially replaced by sericite. The results showed that the adhesion of carbonized layer and fire-proofing performance of waterborne intumescent fire retardant coatings were improved by adding the appropriate amount of sericite and sepiolite. Especially a type of waterborne silicone-acrylic intumescent fire retardant coatings comprising sericite 10%o, pentaerythritol 5% and melamine 10% showed optimal fire-proofing property exceeding 3 600 s, furthermore, the carbonized layer was dense and firm to substrates.

Key words: waterborne, intumescent fire retardant coatings, sericite, sepiolite