复合干粉中氢氧化铝的最佳质量分数研究

doi:10.16265/j.cnki.issn1003-3033.2020.01.017

中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (1): 107-113.doi: 10.16265/j.cnki.issn1003-3033.2020.01.017

复合干粉中氢氧化铝的最佳质量分数研究

李杭晨¹, 郭鑫鑫¹, 李顺超¹, 张晗¹, 华敏^**1,2 副教授, 潘旭海^1,3 教授

1.南京工业大学安全科学与工程学院,江苏南京 210009;
2.南京工业大学火灾与消防研究所,江苏南京 210009;
3.江苏省危险化学品本质安全与控制技术重点实验室,江苏南京 210009

收稿日期:2019-11-15 修回日期:2020-01-05 出版日期:2020-01-28 发布日期:2021-01-22
通讯作者: ** 华敏(1981—),女,江苏姜堰人,博士,副教授,主要从事新型干粉灭火剂和灭火机制的研究。E-mail: huamin@njtech.edu.cn。
作者简介:李杭晨 (1994—),女,江苏南京人,硕士研究生,研究方向为干粉灭火剂研发、灭火机制等E-mail: hangchenli@foxmail.com。
基金资助:
国家自然科学基金资助(51704171);中国博士后科学基金面上项目资助(2016M601796);江苏省博士后科研计划(1601033C);江苏省“六大人才高峰”计划(2014-XCL-010)。

Study on optimum mass fraction of aluminum hydroxide in compound powder

LI Hangchen¹, GUO Xinxin¹, LI Shunchao¹, ZHANG Han¹, HUA Min^1,2, PAN Xuhai^1,3

1. College of Safety Science and Engineering, Nanjing Tech University, Nanjing Jiangsu 210009, China;
2. Institute of Fire Science and Engineering, Nanjing Tech University, Nanjing Jiangsu 210009, China;
3. Jiangsu Key Laboratory of Hazardous Chemicals Safety and Control, Nanjing Jiangsu 210009, China

Received:2019-11-15 Revised:2020-01-05 Online:2020-01-28 Published:2021-01-22

摘要/Abstract

摘要： 为开发高效干粉灭火剂,以超细ABC干粉为基料、氢氧化铝为添加剂,制备一种新型复合干粉灭火剂。通过灭火试验,测定含有不同质量分数氢氧化铝的复合超细干粉的灭火效能和对火焰烟气中有毒气体的抑制效能。结果显示,随着复合超细干粉中氢氧化铝质量分数从0%增加到10%,火焰温度下降速率和火焰高度下降率均呈现先上升后下降的趋势,而灭火剂最小灭火浓度(MEC)和灭火时间则先减小后增大;当氢氧化铝质量分数为4%时,灭火效能和抑烟性能最佳。热重(TG)分析结果表明:氢氧化铝可以加快复合超细干粉的热分解速率峰值,从而提升灭火效能。

关键词: 复合超细干粉, 氢氧化铝, 最佳质量分数, 灭火效应, 有毒气体, 热解特性

Abstract: In order to develop efficient dry powder extinguishing agents, a novel compound powder extinguisher was prepared with ultra-fine ABC dry powder as base material and aluminum hydroxide as additive. Then, through experiments, its suppression efficiency and inhibition effects on toxic gases were measured at different mass fraction of aluminum hydroxide. The results show that as mass fraction of aluminum hydroxide rises from 0 to 10%, drop rates of temperature and flame height both increase first and then decrease while minimum extinguishing concentration (MEC) and extinguishing time decrease first and then increase. Fire-extinguishing effect and toxic gas suppression performance would be the best when mass fraction reaches 4%. Furthermore, thermogravimetric (TG) analysis results demonstrate that aluminum hydroxide can enhance thermal decomposition rate of compound ultra-fine dry powder, resulting in better fire-fighting efficiency.

Key words: compound dry powder, aluminum hydroxide, optimal mass fraction, suppression effect, toxic gas, pyrolysis characteristic

中图分类号:

X932

李杭晨, 郭鑫鑫, 李顺超, 张晗, 华敏, 潘旭海. 复合干粉中氢氧化铝的最佳质量分数研究[J]. 中国安全科学学报, 2020, 30(1): 107-113.

LI Hangchen, GUO Xinxin, LI Shunchao, ZHANG Han, HUA Min, PAN Xuhai. Study on optimum mass fraction of aluminum hydroxide in compound powder[J]. China Safety Science Journal, 2020, 30(1): 107-113.

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复合干粉中氢氧化铝的最佳质量分数研究

Study on optimum mass fraction of aluminum hydroxide in compound powder

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