一种聚硅氮烷修饰水性硅酸盐膨胀防火涂料及其制备方法和应用

By modifying aqueous silicate solutions with polysilazane, a polysilazane-modified aqueous silicate intumescent fire-retardant coating was prepared, which solved the problems of short fire-retardant time and poor water resistance of aqueous silicate coatings, and achieved the effects of extended fire resistance time and strong intumescent layer.

CN118307978BActive Publication Date: 2026-07-17BEIJING UNIV OF CHEM TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Filing Date
2024-03-22
Publication Date
2026-07-17

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Abstract

本发明提供了一种聚硅氮烷修饰水性硅酸盐膨胀防火涂料及其制备方法和应用，所述膨胀防火涂料按重量份计包括以下组分：硅酸盐溶液92‑96份、聚硅氮烷2‑6份、阻燃助剂2份。制备方法包括以下步骤：(1)打开搅拌器，先将聚硅氮烷与去离子水通过1000r / min高速搅拌30min配置水分散液；(2)在搅拌器中将聚硅氮烷水分散液与硅酸盐水溶液混合，同时加入阻燃助剂，以500‑1000r / min的转速搅拌1‑2h制备涂料。本发明的聚硅氮烷修饰水性硅酸盐膨胀防火涂料具有优异的膨胀防火隔热性能，制备工艺简单、极限防火时间长、膨胀层坚固不易剥落，完全满足钢结构防火的需求。
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