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Article

Study on Preparation and Flame-Retardant Mechanism of Cerium-Doped Mg-Al Hydrotalcite

by
Yanan Li
1,†,
Genli Shen
2,†,
Mi Liu
2,
Zhen Wang
2,
Yan Gong
2,
Yong Ma
3,
Daiyu Ji
3,
Jianqiang Li
1,
Min Yang
1,* and
Qi Wang
2,*
1
School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
2
CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, China
3
Inner Mongolia XinYu Rare Earth Functional Materials Co., Ltd., Baotou 014060, China
*
Authors to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Coatings 2025, 15(1), 68; https://doi.org/10.3390/coatings15010068
Submission received: 22 November 2024 / Revised: 31 December 2024 / Accepted: 2 January 2025 / Published: 9 January 2025
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Abstract

Cerium-doped hexagonal lamellar hydrotalcite was prepared via the hydrothermal method and applied to epoxy resin (EP) composites. The characterization results of cerium-doped hydrotalcite showed that the interlayer spacing of hydrotalcite increased with an increase in the cerium doping amount, and an appropriate amount of cerium doping will not destroy the layered structure of hydrotalcite. This study also determined the best cerium doping ratio. The combustion performance of the composite was studied using thermogravimetric infrared analysis, smoke density test, and limiting oxygen index (LOI). The results showed that the addition of cerium-doped hydrotalcite reduced the amount of smoke and the escape of hydrocarbons during the combustion and decomposition of epoxy resin. The main flame-retardant mechanism was that the addition of cerium-doped Mg-Al hydrotalcite promoted the formation of a dense protective layer on the surface of the composite to inhibit the escape of combustible substances, so as to achieve the purpose of a flame retardant and smoke suppression.
Keywords: hydrotalcite; cerium doped; flame retardant; smoke suppression; hydrothermal method hydrotalcite; cerium doped; flame retardant; smoke suppression; hydrothermal method

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MDPI and ACS Style

Li, Y.; Shen, G.; Liu, M.; Wang, Z.; Gong, Y.; Ma, Y.; Ji, D.; Li, J.; Yang, M.; Wang, Q. Study on Preparation and Flame-Retardant Mechanism of Cerium-Doped Mg-Al Hydrotalcite. Coatings 2025, 15, 68. https://doi.org/10.3390/coatings15010068

AMA Style

Li Y, Shen G, Liu M, Wang Z, Gong Y, Ma Y, Ji D, Li J, Yang M, Wang Q. Study on Preparation and Flame-Retardant Mechanism of Cerium-Doped Mg-Al Hydrotalcite. Coatings. 2025; 15(1):68. https://doi.org/10.3390/coatings15010068

Chicago/Turabian Style

Li, Yanan, Genli Shen, Mi Liu, Zhen Wang, Yan Gong, Yong Ma, Daiyu Ji, Jianqiang Li, Min Yang, and Qi Wang. 2025. "Study on Preparation and Flame-Retardant Mechanism of Cerium-Doped Mg-Al Hydrotalcite" Coatings 15, no. 1: 68. https://doi.org/10.3390/coatings15010068

APA Style

Li, Y., Shen, G., Liu, M., Wang, Z., Gong, Y., Ma, Y., Ji, D., Li, J., Yang, M., & Wang, Q. (2025). Study on Preparation and Flame-Retardant Mechanism of Cerium-Doped Mg-Al Hydrotalcite. Coatings, 15(1), 68. https://doi.org/10.3390/coatings15010068

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