硼酸三聚氰胺在膨胀型防火涂料中的协同作用

doi:10.16265/j.cnki.issn1003-3033.2018.12.007

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (12): 40-45.doi: 10.16265/j.cnki.issn1003-3033.2018.12.007

硼酸三聚氰胺在膨胀型防火涂料中的协同作用

徐志胜教授, 周寰, 颜龙^**, 贾宏煜

中南大学防灾科学与安全技术研究所,湖南长沙 410075

收稿日期:2018-08-02 修回日期:2018-10-15 发布日期:2020-11-25
通讯作者: ** 颜龙(1987—),男,四川乐山人,博士,主要研究方向为防火及阻燃材料。E-mail:ylong015@163.com。
作者简介:徐志胜 (1962—),男,山东潍坊人,博士,教授,博士生导师,中南大学“防灾减灾及防护工程”、“消防工程”2 个二级学科博士(硕士)点的第一责任教授和学科带头人。
基金资助:
国家自然科学基金资助(51676210);中国博士后科学基金资助(2017M612587);湖南省自然科学基金资助(2018JJ3668);中南大学研究生自主探索创新项目(2018zzts634)。

Synergistic effect of melamine borate in intumescent fire-retardant coatings

XU Zhisheng, ZHOU Huan, YAN Long, JIA Hongyu

Institute of Disaster Prevention Science and Safety Technology, Central South University, Changsha Hunan 410075, China

Received:2018-08-02 Revised:2018-10-15 Published:2020-11-25

摘要/Abstract

摘要： 为研究硼酸三聚氰胺(MB)在膨胀型防火涂料中的阻燃和抑烟作用,采用小室法、隧道法、大板法、锥形量热仪、热重分析(TGA)法、傅里叶红外光谱(FTIR)法和扫描电镜(SEM)研究不同含量的MB对涂料阻燃和抑烟性能的影响。结果表明:添加适量的MB能提高防火涂料的阻燃和抑烟性能,当MB的质量分数为5%时,涂料的协效阻燃和抑烟效果最佳,火焰传播比值为11.9,炭层膨胀倍数为48.4;MB能促进涂料在燃烧过程中形成更多的P-O-C、B-O-P和C=C等热稳定性结构以提高涂层的热稳定性和成炭量,并形成致密的蜂窝状骨架结构以增加炭层致密性和膨胀度,达到协效阻燃和抑烟的目的。

关键词: 膨胀型防火涂料, 硼酸三聚氰胺(MB), 热稳定性, 阻燃性能, 抑烟性能

Abstract: To study the synergistic effect of MB on the flame retardancy and smoke suppression properties of intumescent fire-retardant coatings, the properties of the coatings with different contents of MB were analyzed by cone calorimeter test, cabinet method test, tunnel method test, thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, and scanning electron microscopy (SEM). The results showed that a proper content of MB could improve flame-retardant and smoke suppression properties of the intumescent coatings. The optimum mass fraction of MB corresponding to the best synergistic effect is 5%, which makes the flame spread rating value decrease to 11.9 and the expansion ratio reach 48.4 and that the addition of MB promotes the formation of more thermostable P-O-C, B-O-P and C=C structures in the char residue that improve the high-temperature thermal stability and char-forming ability of the coatings, thus exhibiting a more compact and intumescent char as well as high flame-retardant and smoke suppression efficiencies.

Key words: intumescent fire-retardant coating, melamine borate (MB), thermal stability, flame retardancy, smoke suppression

中图分类号:

X937

徐志胜, 周寰, 颜龙, 贾宏煜. 硼酸三聚氰胺在膨胀型防火涂料中的协同作用[J]. 中国安全科学学报, 2018, 28(12): 40-45.

XU Zhisheng, ZHOU Huan, YAN Long, JIA Hongyu. Synergistic effect of melamine borate in intumescent fire-retardant coatings[J]. China Safety Science Journal, 2018, 28(12): 40-45.

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硼酸三聚氰胺在膨胀型防火涂料中的协同作用

Synergistic effect of melamine borate in intumescent fire-retardant coatings

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