钨尾矿填料在膨胀型防火涂料中的协效作用*

doi:10.16265/j.cnki.issn1003-3033.2021.10.007

中国安全科学学报 ›› 2021, Vol. 31 ›› Issue (10): 46-53.doi: 10.16265/j.cnki.issn1003-3033.2021.10.007

钨尾矿填料在膨胀型防火涂料中的协效作用^*

王飞跃副教授, 刘辉, 颜龙^** 副教授

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:2021-07-09 修回日期:2021-09-15 出版日期:2021-10-28 发布日期:2022-04-28
通讯作者: ** 颜龙(1987—),男,四川乐山人,博士,副教授,主要从事灭火及阻燃材料研究。E-mail:ylong015@163.com。
作者简介:王飞跃 (1977—),男,重庆人,博士,副教授,主要从事安全科学与防灾减灾方面的研究。E-mail:40370203@qq.com。
基金资助:
国家自然科学基金资助(51906261);湖南省重点研发计划项目(2020SK2057,2021SK2054);中南大学研究生自主探索创新项目(2020zzts636)。

Synergistic effect of tungsten tailing filler in intumescent fire-retardant coatings

WANG Feiyue, LIU Hui, YAN Long

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

Received:2021-07-09 Revised:2021-09-15 Online:2021-10-28 Published:2022-04-28

摘要/Abstract

摘要： 为实现钨尾矿的高效回收利用,以其为原料,经过洗涤、粉碎和表面改性制备钨尾矿填料(TTF)应用于膨胀型防火涂料,并通过大板燃烧法、烟密度测试仪、热重分析(TG)、扫描电镜(SEM)和傅里叶红外光谱(FTIR)等考察TTF在膨胀型防火涂料中的阻燃和抑烟作用。研究结果表明:当TTF的质量分数为3%时,涂料的协效阻燃和抑烟作用最佳,火焰传播比值为4.3,900 s时背面平衡温度为84.8℃,烟密度等级为14.2%。炭层分析显示,TTF的加入能促进涂层在燃烧过程中形成更多的热稳定性交联结构和芳香结构,以促进形成更加致密和稳定的膨胀炭层结构,以阻隔热量和物质的传递,达到较好的协效阻燃和抑烟作用。

关键词: 膨胀型防火涂料, 钨尾矿填料(TTF), 阻燃性能, 抑烟作用, 协效剂

Abstract: In order to reuse tungsten tailing, TTF was prepared through washing, pulverizing and surface modification processes, and applied in intumescent fire-retardant coatings. Then, flame retardancy and smoke suppression properties of TTF were studied by using big panel method, smoke density tests, thermogravimetric analysis (TG), scanning electron microscope (SEM) and fourier transform infrared spectroscopy (FTIR). The results show that synergistic flame retardancy and smoke suppression effect will be the best when TTF mass fraction is 3%, which exhibits flame spread rate of 4.3, equilibrium backside temperature of 84.8 ℃ at 900s, and smoke density rate of 14.2%. Char residue analysis indicates that adding TTF can promote coating to form more cross-linked structures and aromatic structures during burning, thus producing a more dense and thermally stable intumescent char layer against heat and mass transfer, which achieves better synergistic flame retardancy and smoke suppression effect.

Key words: intumescent fire-retardant coating, tungsten tailing filler (TTF), flame retardancy, smoke suppression effect, synergist

中图分类号:

X936

王飞跃, 刘辉, 颜龙. 钨尾矿填料在膨胀型防火涂料中的协效作用^*[J]. 中国安全科学学报, 2021, 31(10): 46-53.

WANG Feiyue, LIU Hui, YAN Long. Synergistic effect of tungsten tailing filler in intumescent fire-retardant coatings[J]. China Safety Science Journal, 2021, 31(10): 46-53.

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钨尾矿填料在膨胀型防火涂料中的协效作用^*

Synergistic effect of tungsten tailing filler in intumescent fire-retardant coatings

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