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涂料工业  2018, Vol. 48 Issue (9): 1-5    https://doi.org/10.12020/j.issn.0253-4312.2018.9.1
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氮化硼膨胀型钢结构防火涂料的理论与实验
王鹏,王霁,肖志行
中国人民武装警察部队学院科研部,河北廊坊 065099
The Theory and Experimental Study on Boron Nitride Intumescent Fire Retardant Coating
Wang Peng, Wang Ji, Xiao Zhixing
The Chinese Armed Police Force Academy, Langfang, Hebei 065099, China
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摘要 建立了以四硼酸钠为氧化剂,5-氨基四氮唑发生氧化还原反应生成氮化硼和大量气体的膨胀体系理论。按照这个理论制备了以四硼酸钠、5-氨基四氮唑、磷酸硅为膨胀体系,铝酸盐水泥为硬化剂的钢结构防火涂料。用正交试验方法设计涂料配方,用电热炉测试涂料耐火性能,得到了最优配方,并分析了隔热层的失效机理。结果表明:采用5-氨基四氮唑可以解决四硼酸钠熔化问题;受热膨胀后的氮化硼隔热层具有疏松多孔的海绵状结构;所得最优配方的耐火性能可达1 h;涂料的失效机理是隔热层的龟裂,解决这一问题的关键因素是铝酸盐水泥的种类和含量。
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王鹏
关键词:  防火涂料  膨胀  氮化硼  5-氨基四氮唑  四硼酸钠  铝酸盐水泥    
Abstract: Abstract:The intumescent theory of sodium tetraborate as oxidizing agent and 5-amino tetrazole was theorized, wherein a redox reaction between sodium tetraborate and 5-amino tetrazole generated boron nitride and large quantity of gas. According to this theory, fire retardant coatings for steel structure were prepared from sodium tetraborate, 5-amino tetrazole and silicon phosphate as intumescent system as well as aluminate cement as hardening agent. The coatings formula was designed by orthogonal experiment and the fire resistance time was tested by an electrothermal furnace to obtain the optimum formula. The failure mechanism of thermal protective layer was analyzed. The results showed that 5-amino tetrazole could solve the melting problem of sodium tetraborate. The heating of coating could form boron nitride thermal protective layer which had a spongy structure. The fire resistance time of the optimum formula was 1 h. The failure mechanism of the coating was the crack of thermal protective layer. The key factor to solve this problem was the type and content of aluminate cement.
Key words:  fire retardant coating    intumescent    boron nitride    5-amino tetrazole    sodium tetraborate    aluminate Cement
收稿日期:  2017-12-07      修回日期:  2018-04-25           出版日期:  2018-09-01      发布日期:  2018-09-13      期的出版日期:  2018-09-01
ZTFLH:  TU545  
基金资助: 河北省高等学校科学技术研究项目《氮化硼膨胀型钢结构防火涂料研究》
通讯作者:  王鹏    E-mail:  wangpengcapf@139.com
引用本文:    
王鹏, 王霁, 肖志行. 氮化硼膨胀型钢结构防火涂料的理论与实验[J]. 涂料工业, 2018, 48(9): 1-5.
Wang Peng, Wang Ji, Xiao Zhixing. The Theory and Experimental Study on Boron Nitride Intumescent Fire Retardant Coating. Paint & Coatings Industry, 2018, 48(9): 1-5.
链接本文:  
http://manu65.magtech.com.cn/Jwk3_tlgy/CN/10.12020/j.issn.0253-4312.2018.9.1  或          http://manu65.magtech.com.cn/Jwk3_tlgy/CN/Y2018/V48/I9/1
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