MgAl-LDHs煤自燃阻燃剂的制备及阻燃机理研究

doi:10.19286/j.cnki.cci.2025.06.031

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Abstract

A material similar to hydrotalcite was successfully prepared by co-precipitation method, and Mg-Al hydrotalcite flame retardants modified with different zinc contents were further prepared, and their flame retardancy was evaluated. The results show that the flame retardancy of Mg-Al hydrotalcite (MgAl-LDHs) is not affected by the content of zinc. Spontaneous combustion experiment showed that the temperature of exothermic reaction was increased from 146.2 to 193.6 ℃ after the addition of MgAl-LDHs. The changes of functional groups of the materials during the reaction were analyzed by infrared spectroscopy. The oxidation of organic groups on the surface of coal was obviously prevented by the addition of MgAl-LDHs, indicating that the flame retardant has a strong flame retardant effect on coal. The technique studied can be used for temporary fire suppression.

Key words： MgAl-LDHs flame retardant coal spontaneous combustion functional group oxidation heat up

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	Articles by authors
	Wang Yun 1
	Huang Jun 2
	Yang Yujia 2
	Tan Wenjing 2
	Qi Yu 2
	Li Jiangwei 2

Cite this article:

Wang Yun 1,Huang Jun 2,Yang Yujia 2等. Study on preparation and flame retardancy mechanism of MgAl-LDHs coal spontaneous combustion flame retardants[J]. CCI, 2025, 48(6): 146-151.

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http://www.mtyhg.com.cn/EN/10.19286/j.cnki.cci.2025.06.031 OR http://www.mtyhg.com.cn/EN/Y2025/V48/I6/146

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