文献类型：期刊文献

中文题名：耐龟裂水性透明防火涂料的制备与性能研究

英文题名：Study on the Preparation and Performance of Crack-resistant Waterborne Transparent Fire Retardant Coatings

作者：罗佳明[1] 何金蓉[1] 蒋金锐[1] 吴玉章[1] 屈伟[1]

第一作者：罗佳明

机构：[1]中国林业科学研究院木材工业研究所,北京100091

年份：2024

卷号：54

期号：3

起止页码：32-40

中文期刊名：涂料工业

外文期刊名：Paint & Coatings Industry

收录：CSTPCD;;北大核心:【北大核心2023】；CSCD:【CSCD_E2023_2024】；

基金：国家重点研发计划(2022YFD2200702)。

语种：中文

中文关键词：防火涂料;透明;膨胀炭层;埃洛石纳米管;耐龟裂;磷酸酯;水性氨基树脂

外文关键词：fire retardant coatings;transparency;intumescent;HNTs;crack resistance;phosphorus-containing reactive agent;waterborne amino resin

分类号：TQ637.6

摘要：为提高涂层防火性能和耐龟裂性能,将埃洛石纳米管(HNTs)与磷酸酯(PRA)分子接枝,再与水性氨基树脂(MF)复配制备透明膨胀型防火涂料。通过傅立叶变换红外光谱、核磁氢谱、X射线晶体衍射等手段分析了反应机制。利用热重分析、扫描电子显微镜、锥形量热仪等探究埃洛石纳米管对涂层膨胀以及炭层形貌的作用机制。结果表明:HNTs可以通过Al—OH与PRA上的P—OH反应接枝到PRA分子链上,同时PRA分子还可以插入到HNTs的层间,接枝后的HNTs对涂层透明性无不良影响;与未添加HNTs的涂层相比,当HNTs添加量为5%时,800℃残炭率增大了42.2%,引燃时间延长了38 s,AveHRR180 s和THR300 s分别降低了66.1%和55.6%,涂层无裂纹产生。
In order to improve the flame retardancy and crack resistance of coating,halloysite nanotubes(HNTs)were grafted with phosphorus-containing reactive agent(PRA)and then combined with waterborne amino resin(MF)to prepare transparent intumescent fire retardant coatings.The reaction mechanism was analyzed by Fourier transform infrared spectroscopy,nuclear magnetic resonance(1 H NMR),X-ray crystallography and other analytical means.Thermogravimetric analysis,scanning electron microscope,and the cone calorimeter were used to explore the action mechanism of the halloysite nanotubes(HNTs)on coating expansion and carbon layer morphology.The results showed that HNTs could be grafted onto the PRA molecule chain through the reaction between Al—OH and P—OH,and PRA molecules could also penetrate the interlayers of HNTs.The grafting of HNTs did not have an adverseeffect on the transparency of the coating.When the HNTs content was 5%,the residual char ratio at 800℃increased by 43.6%.The ignition time,AveHRR180 s,and THR300 s of wood with these coatings with 5%HNTs were extended by 38 seconds,and decreased by 66.1%and 55.6%,respectively.And no cracks generated in the coating.