磷硅协同阻燃水性氯醚丙烯酸酯树脂的制备及性能  

Preparation and Performances of the Waterborne Chloroether Acrylate Resins with Phosphorus-Silicon Synergistic Flame Retardancy

作　　者：邵详 张虹 李晓明 张国军 黄勇杰 裴克梅[1] SHAO Xiang;ZHANG Hong;LI Xiaoming;ZHANG Guojun;HUANG Yongjie;PEI Kemei(School of Chemistry and Chemical Engineering,Zhejiang University of Technology,Hangzhou 310018,China;Zhejiang Litai Composite Materials Co.,Ltd.,Deqing 313000,China)

机构地区：[1]浙江理工大学化学与化工学院,浙江杭州310018 [2]浙江立泰复合材料股份有限公司,浙江德清313000

出　　处：《塑料工业》2024年第9期57-62,共6页China Plastics Industry

基　　金：浙江省“尖兵”“领雁”研发攻关计划项目(2023C01199)。

摘　　要：为提高水性丙烯酸树脂的阻燃性,本文采用硅烷偶联剂(KH550)改性处理的纳米SiO_(2)作为填料,并将其均匀地分散在甲基丙烯酸-2-羟乙基酯磷酸酯(PM2)改性氯醚丙烯酸酯水分散体中,搭配氨基树脂固化剂制备出水性磷硅/氯醚丙烯酸酯涂层,测试了涂层的力学性能、防腐性和阻燃性,并与纯丙烯酸酯涂层、PM2改性氯醚丙烯酸酯涂层的性能进行比较。结果表明,当改性纳米SiO_(2)占树脂固体质量的4%时,涂层力学性能最佳;改性纳米SiO_(2)的引入可显著增强复合涂层的耐腐蚀性;磷硅/氯醚丙烯酸酯涂层的极限氧指数达到25.3%、阻燃等级为HB;PM2改性氯醚丙烯酸酯涂层燃烧后表面呈多孔状,而磷硅/氯醚丙烯酸酯涂层燃烧后表面呈现致密状,二者阻燃机理存在差异;燃烧残炭率的结果显示磷硅/氯醚丙烯酸酯涂层中磷硅组分具有协同阻燃作用。To enhance the flame retardancy of waterborne acrylic resin,the nano-SiO_(2)modified by the silane coupling agent(KH550)was used as the filler and evenly dispersed in the aqueous dispersion of methyl 2-hydroxyethyl acrylate phosphate(PM2)modified chloroether acrylate.Then,the waterborne phosphosilicate/chloroether acrylate coating was formulated with the addition of an amino resin curing agent.The mechanical properties,corrosion resistance,and flame retardancy of the coating were tested and compared with those of a pure acrylate coating and a PM2-modified chloroether acrylate coating.The results indicate that the coating mechanical properties are optimal when the mass fraction of modified nano-SiO_(2)is 4%in the resin solid mass.The introduction of modified nano-SiO_(2)significantly enhances the corrosion resistance of the composite coating.The phosphosilicate/chloroether acrylate coating achieves an oxygen index of 25.3%and a flame retardancy rating of HB.The surface of the PM2-modified chloroether acrylate coating after combustion is porous,whereas the surface of the phosphosilicate/chloroether acrylate coating after combustion is dense.Their flame retardancy mechanisms are different.The results of the residual carbon rate after combustion indicate that the phosphosilicate component in the phosphosilicate/chloroether acrylate coating plays a synergistic flame retardant effect.

关 键 词：协同阻燃 纳米二氧化硅 水性氯醚丙烯酸酯 磷硅/氯醚丙烯酸酯涂层 

分 类 号：TQ325.7[化学工程—合成树脂塑料工业]