高价态金属离子交联体系防灭火性能影响研究

doi:10.16265/j.cnki.issn 1003-3033.2021.07.016

中国安全科学学报 ›› 2021, Vol. 31 ›› Issue (7): 113-119.doi: 10.16265/j.cnki.issn 1003-3033.2021.07.016

高价态金属离子交联体系防灭火性能影响研究

梁择文^1,2, 王俊峰^2,3 教授, 董凯丽^1,2, 张玉龙^1,2 副教授

1 太原理工大学安全与应急管理工程学院,山西太原 030024;
2 太原理工大学山西省矿井通风与火灾防治工程技术研究中心,山西太原 030024;
3 太原理工大学矿业工程学院,山西太原 030024

收稿日期:2021-04-19 修回日期:2021-06-12 出版日期:2021-07-28 发布日期:2022-01-28
作者简介:梁择文 (1995—),男,山西大同人,硕士研究生,研究方向为矿井火灾防治。E-mail:1830239183@qq.com。
基金资助:
山西省自然科学基金资助(201801D121265)。

Impact on fire-fighting performance of high-valent metal ions cross-linking system

LIANG Zewen^1,2, WANG Junfeng^2,3, DONG Kaili^1,2, ZHANG Yulong^1,2

1 School of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan Shanxi 030024, China;
2 Shanxi Engineering Research Center for Mine Ventilation and Fire Prevention, Taiyuan University of Technology, Taiyuan Shanxi 030024, China;
3 College of Mining and Technology, Taiyuan University of Technology, Taiyuan Shanxi 030024, China

Received:2021-04-19 Revised:2021-06-12 Online:2021-07-28 Published:2022-01-28

摘要/Abstract

摘要： 为比较中心离子高价态对凝胶防灭火性能的影响,以羧甲基纤维素钠与柠檬酸铝和柠檬酸锆交联,试验Zr⁴⁺交联体系和Al³⁺交联体系,测定成胶时间并优化配比方案;通过程序升温测试试验研究指标气体和交叉点温度的变化,使用红外光谱(FTIR)研究凝胶的防灭火机制。研究结果表明:在程序升温过程中,Zr⁴⁺交联体系使得CO的生成量降低56%,C₂H₄的生成量降低54%,且交叉点温度提高32 ℃,阻化效果要优于Al³⁺交联体系;Zr⁴⁺交联体系在加热过程中抑制煤中羟基的氧化,使甲基和亚甲基更少参与煤氧反应,并且促进羰基和含氧官能团的生成。

关键词: 高价态金属离子, 交联体系, 防灭火性能, 凝胶, 程序升温, 红外光谱(FTIR), 煤自燃

Abstract: In order to compare impact of central ion's high valence state on fire extinguishing performance of gel, with sodium carboxymethyl cellulose cross-linking with aluminum citrate and zirconium citrate, Zr⁴⁺ cross-linking system and Al³⁺ cross-linking system were tested, gelling time was measured and proportioning scheme was optimized. Then, changes of index gases and crossing point temperature were studied through programmed temperature test, and FTIR was adopted to explore flame retardant mechanism of gel. The results show that during programmed temperature process, Zr⁴⁺ cross-linking system reduces generation amount of CO by 56%, and that of C₂H₄ by 54% while crossing point temperature is increased by 32 ℃, and its inhibition effect is better than that of Al³⁺ cross-linking system. Moreover, this system better inhibits oxidation of hydroxyl groups in coal, making methyl and methylene groups less involved in coal-oxygen reactions, and promoting generation of carbonyl groups and oxygen-containing functional groups.

Key words: high-valent metal ions, cross-linking system, fire fighting performance, gel, programmed temperature, infrared spectroscopy (FTIR), coal spontaneous combustion

中图分类号:

X936

梁择文, 王俊峰, 董凯丽, 张玉龙. 高价态金属离子交联体系防灭火性能影响研究[J]. 中国安全科学学报, 2021, 31(7): 113-119.

LIANG Zewen, WANG Junfeng, DONG Kaili, ZHANG Yulong. Impact on fire-fighting performance of high-valent metal ions cross-linking system[J]. China Safety Science Journal, 2021, 31(7): 113-119.

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高价态金属离子交联体系防灭火性能影响研究

Impact on fire-fighting performance of high-valent metal ions cross-linking system

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