CN106752538A - 膨胀型钢结构防火涂料 - Google Patents

膨胀型钢结构防火涂料 Download PDF

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CN106752538A
CN106752538A CN201710018878.1A CN201710018878A CN106752538A CN 106752538 A CN106752538 A CN 106752538A CN 201710018878 A CN201710018878 A CN 201710018878A CN 106752538 A CN106752538 A CN 106752538A
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倪世宏
王华林
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Hefei Insulate New Material Technology Co Ltd
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Abstract

本发明涉及一种膨胀型钢结构防火涂料，按照重量百分比的原料包括：丙烯酸树脂20~30%，三聚氰胺聚磷酸盐10~15%，季戊四醇10~15%，三聚氰胺10~15%，纳米可膨胀石墨5~7.5%，碳纤维12~18%，纳米Mg(OH)21.5~3%，纳米TiO26~10%，助溶剂5~8%。得到的涂料与钢结构附着力强，保证涂料的耐火能力。

Description

膨胀型钢结构防火涂料
技术领域
本发明属于化工涂料技术领域,具体涉及一种膨胀型钢结构防火涂料。
背景技术
钢结构建筑材料本身虽然不燃,但在火灾高温作用下,其力学性能都会随温度的升高而降低。当温度达到600℃时,钢结构基本丧失全部强度和刚度。而一般火场的温度能达到800～1000℃,在这样高的温度下,裸露的钢结构会很快出现塑性变形,造成钢结构建筑整体在短时间内（15min左右）就会丧失承载能力而垮塌。因此钢结构建筑必须采取一些相应的防火措施来提高其耐火极限,满足防火设计规范规定的要求。钢结构防火涂料是指施涂于建筑物及构筑物的钢结构表面,能形成耐火隔热保护层以提高钢结构耐火极限的涂料。现有的钢结构防火涂料主要有可膨胀石墨钢结构防火涂料。其是基于可膨胀石墨受热膨胀和Mg(OH)2的阻燃功能得到的涂料，可膨胀石墨形成的受热膨胀形成“蠕虫”状石墨穿插于炭质层中,使熔融体系的黏度变大,发泡更加均匀,体系成炭固化后可获得更高的强度,而Mg(OH)2颗粒无毒、无味,具有阻燃、填充及抑烟三重功能。但是在实际配比中发现可膨胀石墨与Mg(OH)2占比不佳时，可膨胀石墨受热膨胀时受体系的粘附限制作用小,在膨胀过程中易脱离防火涂料体系,造成了膨胀石墨形成的“蠕虫”状炭体与金属基材附着力较差,防火涂料失去对钢结构的保护作用。
发明内容
本发明目的是提供一种膨胀型钢结构防火涂料，涂料与钢结构附着力强，保证涂料的耐火能力。
为了实现以上目的，本发明采用的技术方案为：一种膨胀型钢结构防火涂料，按照重量百分比的原料包括：丙烯酸树脂20~30%，三聚氰胺聚磷酸盐10~15%，季戊四醇10~15%，三聚氰胺10~15%，纳米可膨胀石墨5~7.5%，碳纤维12~18%，纳米Mg(OH)21.5~3%，纳米TiO26~10%，助溶剂5~8%。
优选的，所述的膨胀型钢结构防火涂料，按照重量百分比的原料包括：丙烯酸树脂23%，三聚氰胺聚磷酸盐12%，季戊四醇13%，三聚氰胺13%，纳米可膨胀石墨6.5%，碳纤维15%，纳米Mg(OH)22.5%，纳米TiO28%，助溶剂7%。
本发明的技术效果在于：上述配比中丙烯酸树脂为基料，三聚氰胺聚磷酸盐为脱水催化剂，季戊四醇为成炭剂，三聚氰胺为发泡剂,碳纤维为含碳本质阻燃纤维，提高涂料的耐火极限，纳米TiO2能够降解空气中的有害有机物，具有光催化性能和超亲水性、超亲油性，不仅能杀死环境中的细菌、能降解由细菌释放出的有毒复合物，而且还具有自清洁效应，提高涂料的防污、防雾性能，纳米可膨胀石墨穿插于炭质层中,起到类似纤维材料的增强作用,使熔融体系的黏度变大,发泡更加均匀,体系成炭固化后获得了更高的强度, 涂料的防火性能迅速上升，加入Mg(OH)2,涂料的耐火极限比单加可膨胀石墨时得到了提高，提高纳米可膨胀石墨与纳米Mg(OH)2颗粒的协同作用, 按照上述配比得到的涂料发泡好,碳层致密,强度高，钢结构上涂有干燥涂层厚度2mm，可耐700℃的高温，耐火极限达到100min且膜层较为平整，耐火能力优异。符合技术指标GB1490722002的要求。
具体实施方式
下面将结合本发明实施例，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例1：一种膨胀型钢结构防火涂料，按照重量百分比的原料包括：丙烯酸树脂23%，三聚氰胺聚磷酸盐12%，季戊四醇13%，三聚氰胺13%，纳米可膨胀石墨6.5%，碳纤维15%，纳米Mg(OH)22.5%，纳米TiO28%，助溶剂7%。
采用上述配比，纳米可膨胀石墨穿插于炭质层中,起到类似纤维材料的增强作用,使熔融体系的黏度变大,发泡更加均匀,体系成炭固化后获得了更高的强度, 涂料的防火性能迅速上升，加入Mg(OH)2,涂料的耐火极限比单加可膨胀石墨时得到了提高，提高纳米可膨胀石墨与纳米Mg(OH)2颗粒的协同作用,所谓协同作用指的就是协效作用，其是由两种(其中一种是阻燃剂,另一种是协效剂)或两种以上组分构成阻燃涂料，其阻燃作用优于由单一组分所测定的阻燃作用之和。按照上述配比得到的涂料发泡好,碳层致密,强度高，钢结构上涂有干燥涂层厚度2mm，可耐700℃的高温，耐火极限达到110min且膜层较为平整，耐火能力优异。
实施例2：一种膨胀型钢结构防火涂料，按照重量百分比的原料包括：丙烯酸树脂26%，三聚氰胺聚磷酸盐13%，季戊四醇12%，三聚氰胺12%，纳米可膨胀石墨6%，碳纤维16%，纳米Mg(OH)22%，纳米TiO27%，助溶剂6%。
按照上述配比得到的涂料发泡好,碳层致密,强度高，钢结构上涂有干燥涂层厚度2mm，可耐700℃的高温，耐火极限达到100min且膜层较为平整，耐火能力优异。
实施例3：一种膨胀型钢结构防火涂料，按照重量百分比的原料包括：丙烯酸树脂26%，三聚氰胺聚磷酸盐12%，季戊四醇13%，三聚氰胺12%，纳米可膨胀石墨7%，碳纤维15%，纳米Mg(OH)22%，纳米TiO27%，助溶剂6%。
按照上述配比得到的涂料发泡好,碳层致密,强度高，钢结构上涂有干燥涂层厚度2mm，可耐700℃的高温，耐火极限达到100min且膜层较为平整，耐火能力优异。
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。

Claims (2)

1.一种膨胀型钢结构防火涂料，其特征在于，按照重量百分比的原料包括：丙烯酸树脂20~30%，三聚氰胺聚磷酸盐10~15%，季戊四醇10~15%，三聚氰胺10~15%，纳米可膨胀石墨5~7.5%，碳纤维12~18%，纳米Mg(OH)21.5~3%，纳米TiO26~10%，助溶剂5~8%。
2.根据权利要求1所述的膨胀型钢结构防火涂料，其特征在于，按照重量百分比的原料包括：丙烯酸树脂23%，三聚氰胺聚磷酸盐12%，季戊四醇13%，三聚氰胺13%，纳米可膨胀石墨6.5%，碳纤维15%，纳米Mg(OH)22.5%，纳米TiO28%，助溶剂7%。
CN201710018878.1A 2017-01-11 2017-01-11 膨胀型钢结构防火涂料 Pending CN106752538A (zh)

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