主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2021, Vol. 40 ›› Issue (9): 1388-1390.

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纳米SiO2对膨胀型防火涂料的紫外老化影响研究

鲁 宁，唐信程，崔智勇，朱丹青   

  1. 重庆科技学院，重庆 401331
  • 出版日期:2021-09-15 发布日期:2021-09-15
  • 作者简介:鲁 宁（1975-），男，四川资阳人，重庆科技学院安全工程学院副院长，副教授，博士，主要从事消防安全、阻燃材料研究，重庆市沙坪坝区大学城东路20号，401331。

Study on the effect of nano-silica on the ultraviolet aging of intumescent fireproof coatings

LU Ning, TANG Xin-cheng, CUI Zhi-yong, ZHU Dan-qing   

  1. Chongqing University of Science & Technology, Chong-qing 401331, China
  • Online:2021-09-15 Published:2021-09-15

摘要： 为了研究纳米SiO2对膨胀型防火涂料的耐紫外线性能的影响，对膨胀型防火涂料KB（不添加纳米SiO2）、SY-1（1%纳米SiO2）、SY-2（2%纳米SiO2）和SY-3（3%纳米SiO2）进行了人工紫外加速老化实验，并利用锥形量热仪、扫描电镜、热重分析仪和傅里叶红外光谱分析仪对样品的理化性能进行了分析。结果表明：添加纳米SiO2提高了膨胀型防火涂料的防火性能和耐紫外线性能，并且添加2%纳米SiO2的效果最明显。从对SY-2和KB的老化机理分析发现，纳米SiO2提高膨胀型防火涂料的热稳定性及耐紫外线性能，主要是通过促进树脂与聚磷酸铵交联，抑制酰胺形成，与季戊四醇形成交联结构完成。

关键词: 纳米SiO2, 膨胀型防火涂料, 紫外线老化

Abstract: The effect of nano-silica on the UV resistance of intumescent fire-retardant coatings were studied.Artificial ultraviolet accelerated aging experiments were carried out on the intumescent fireproof coating KB (no nano-SiO2 added), SY-1 (1% nano-SiO2), SY-2 (2% nano-SiO2) and SY-3 (3% nano-SiO2).The physical and chemical properties of the samples were analyzed using cone calorimeter, scanning electron microscope, thermogravimetric analyzer and Fourier infrared spectrometer. The results showed that the addition of nano-SiO2 improved the fire resistance and ultraviolet resistance of intumescent fire-retardant coatings, and the effected of adding 2% nano-SiO2 was the most obvious. From the analysis of the aging mechanism of SY-2 and KB, it is found that nano-SiO2 can improve the thermal stability and UV resistance of intumescent fireproof coatings, mainly by promoting the cross-linking of the resin with ammonium polyphosphate, inhibiting the formation of amide, and forming cross-linking with pentaerythritol.

Key words: nano-silica, intumescent fireproof coating, UV-aging