The invention discloses a steel structure intumescent fire retardant coating, which is made from the following weight components: 20~25 parts ammonium polyphosphate, 15~20 melamine, 25~30 pentaerythritol, 20~25 water based silicone acrylic emulsion, 3~5 nano diatomite dispersions, 1~2 six sodium pentanphosphate, 3~5 modified glass short fibers, 0.3 To 0.5 OP emulsifier 10, 25~30 deionized water. The steel structure expansion fireproof coating of the invention is waterborne silicone acrylate emulsion as the film forming material. The classical ammonium polyphosphate, pentaerythritol and melamine are used as the intumescent flame retardant system, and the nano diatomite dispersions and modified glass short fibers are added, the formula is reasonable and scientific, and the expansion and compactness, carbon layer strength, water resistance and resistance are all reasonable. Good flammability. The invention also discloses a preparation method of steel structure intumescent fire retardant coating. By mixing different raw materials step by step, each component is evenly mixed and has good dispersion, and the process steps are simple, the operability is strong, and the equipment requirements are low, so it is suitable for industrial production.
【技术实现步骤摘要】
一种钢结构膨胀型防火涂料及其制备方法
本专利技术涉及一种特种涂料,尤其是涉及一种钢结构膨胀型防火涂料及其制备方法。
技术介绍
防火涂料可分为膨胀型防火涂料和非膨胀型防火涂料。钢结构常用的防火材料为膨胀型有机防火涂料。为使有机涂层难燃化,可通过向有机聚合物分子中引入难燃的元素,或在涂料中加入难燃剂。膨胀型钢结构防火涂料的阻燃成分主要是季戊四醇(Pentaerythrite简称PER,成炭剂)、聚磷酸铵(Am-moniumPolyphospho-phate简称APP,催化剂)和聚氰胺(Melamine简称MEL,发泡剂),该防火涂料体系已经广泛使用。例如,申请号CN105694627A,申请公布日2016.06.22的中国专利公开了一种水性钢结构防火涂料及其制备方法,取下述重量配比的主要原料制备而成:聚磷酸铵15-23,三聚氰胺11-13,季戊四醇6-12,水性环氧树脂7-13,羟基丙烯酸乳液11-15,酚醛树脂6-10,蒙脱石2-6,去离子水19-25,增稠剂1.0-1.8,分散剂2-4,消泡剂0.14-0.22。该防火涂料采用聚磷酸铵(APP)-季戊四醇(PER) ...
【技术保护点】
1.一种钢结构膨胀型防火涂料,其特征在于,由以下重量份的组分制成:20~25份聚磷酸铵,15~20份三聚氰胺,25~30份季戊四醇,20~25份的水性硅丙乳液,3~5份纳米硅藻土分散液,1~2份六偏磷酸钠,3~5份改性玻璃短纤维,0.3~0.5份OP‑10乳化剂,25~30份去离子水。
【技术特征摘要】
1.一种钢结构膨胀型防火涂料,其特征在于,由以下重量份的组分制成:20~25份聚磷酸铵,15~20份三聚氰胺,25~30份季戊四醇,20~25份的水性硅丙乳液,3~5份纳米硅藻土分散液,1~2份六偏磷酸钠,3~5份改性玻璃短纤维,0.3~0.5份OP-10乳化剂,25~30份去离子水。2.根据权利要求1所述的一种钢结构膨胀型防火涂料,其特征在于,所述纳米硅藻土分散液通过以下方法制得:将10~15ml异丙醇与1.5~2ml水混合均匀后,滴加1~1.5ml硅烷偶联剂KH-570,充分搅拌至少1h后加入10~15g纳米硅藻土,超声分散即得纳米硅藻土分散液。3.根据权利要求1所述的一种钢结构膨胀型防火涂料,其特征在于,所述改性玻璃短纤维通过以下方法制得:将甲醛加入四口烧瓶中并调节pH为5~6后,在搅拌状态下升温至60~70℃,加入尿素,回流至溶液至无色透明,升温至75~80℃并保温反应1.5~3h,调节pH为8~9后,降温至60℃以下,真空脱水至所需黏度,冷却,得浸润改性液,待用;将苯酚加入烧...
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