改性淀粉基碳氮硫硅环钢结构防火涂料的研究  

Study on Fire Retardant Coating for Modified Starch-Based Carbon-Nitrogen-Sulfur-Silicon Ring Steel Structure

作　　者：谢婧宁 邓跃全[1] 叶刚 谢金凤 程琳惠 成静 高川林 李恒 Xie Jingning;Deng Yuequan;Ye Gang;Xie Jinfeng;Cheng Linhui;Cheng Jing;Gao Chuanlin;Li Heng(School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang,Sichuan 621010;Sichuan Ruite Fire Protection Technology Co.,Ltd.,Mianyang,Sichuan 620000)

机构地区：[1]西南科技大学材料与化学学院,四川绵阳621010 [2]四川瑞特消防科技有限公司,四川眉山620000

出　　处：《非金属矿》2024年第4期49-52,64,共5页Non-Metallic Mines

基　　金：企业委托开发项目(23zh0292)。

摘　　要：本试验对淀粉进行改性,制备了改性淀粉基碳氮硫硅环保钢结构防火涂料,探究了改性淀粉加入量对涂料性能的影响,并对其进行阻燃机理分析。结果表明,改性淀粉的加入能显著增强涂层黏结性能,对其余基本性能无影响,符合GB 14907—2018的规定;改性淀粉能显著提高涂层发泡性能和耐火性能,改性淀粉加入量为2%~6%时,涂层发泡厚度大于3.0 cm,涂层背面温度小于183.6℃;改性淀粉在受热时形成熔融状态钠醚盐,具有较好传质传热作用,有利于气源物质同步气化,与碳源炭化协调一致,改性淀粉在289.1℃左右时开始分解,相变结束后残碳量约为36.5%,在涂层中主要起碳源和小部分气源作用,且能改善涂层的成膜性能,降低成本,具有较好应用前景。In this paper,starch was modified to prepare modified starch-based carbon-nitrogen-sulfur-silicon environmental protection steel structure fire retardant coating.The effect of modified starch addition on the performance of the coating was investigated,and the flame retardant mechanism was analyzed.The results show that the addition of modified starch can significantly enhance the bonding performance of the coating,and has no effect on the other basic properties,which meets the requirements of GB 14907—2018;the modified starch can significantly improve the foaming performance and fire resistance of the coating,the most suitable addition amount of modified starch is 2%-6%,the foaming thickness of the coating is more than 3.0 cm,and the temperature on the back of the coating is less than 183.6℃.The modified starch forms a molten sodium ether salt when heated,which has a good mass transfer and heat transfer effect,is conducive to the simultaneous gasification of gas source materials,and is consistent with the carbonization of carbon source.The modified starch begins to decompose at about 289.1℃.After the phase transition,the residual carbon content is about 36.5%.It mainly acts as a carbon source and a small part of the gas source in the coating,and can improve the film-forming performance of the coating and reduce the cost.The fire retardant coating has a good application prospect.

关 键 词：改性淀粉 碳氮硫硅环钢结构防火涂料 发泡性能 耐火性能 

分 类 号：TU54[建筑科学—建筑技术科学]