Effect of hydrophobic ally modified silica on the performance of fluorine-free foam extinguishing agent

被引：0

作者：

Cao H. ^{[1
]}

Wang S. ^{[1
]}

Ou H. ^{[1
]}

Xue H. ^{[1
]}

Bi H. ^{[1
]}

Wang J. ^{[2
]}

机构：

[1] School of Safety Science and Engineering, Changzhou University, Jiangsu, Changzhou

[2] Jiangsu Suolong Fire Science and Technology Shares Limited Company, Jiangsu, Taizhou

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2024年 / 43卷 / 06期

关键词：

fluorine-free foam extinguishing agent; hydrophobic modification; silica nanoparticles; trimethylchlorosilane;

D O I：

10.16085/j.issn.1000-6613.2023-0881

中图分类号：

学科分类号：

摘要：

The hydrophobic silica nanoparticles (NPs) were obtained by the modification of NPs with trimethylchlorosilane (TMCS), and the modified NPs were added to fluorine-free foam extinguishing agents to investigate the effects of the different modification agrees NPs on the performance of fluorine-free foam extinguishing agents. Thermogravimetric analysis (TGA), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and water contact angle measurements were used to characterize hydrophobic modified NPs at different TMCS concentrations. The TGA and EDX results confirmed that the effective surface modification of NPs was achieved with TMCS. The water contact angle test results show that when the mass fraction of TMCS is 16.67%. the contact angle of NPs could reach 150.9°. SEM analysis indicated that the dispersion of NPs was improved. The particle size of the modified NPs was mainly distributed between 60—150nm. The results of the foaming property, foam stability and fire extinguishing effectiveness of the modified NPs on the fluorine-free foam solution showed that the modified NPs had the greatest improvement on the foaming property, stability and fire extinguishing effectiveness of the foam when the mass fraction of TMCS was 13.04%. © 2024 Chemical Industry Press Co., Ltd.. All rights reserved.

引用

页码：3301 / 3309

页数：8

共 27 条

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