Significantly suppressing CO release achieved by the catalysis effect of nanostructured rare earth/manganese oxides: Application in flame retardant thermoplastic polyurethane

Suhong Li, Chuanshen Wang, Wei Cai, Wenzong Xu, Liangyuan Qi, Jing Wang, Mingtong Zhang, Zhimin Song, Di Zhang, Jing Gao, Lei Song*, Hongyang Zhu, Weiyi Xing

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

There is significant smoke and toxic volatiles generated from the combustion of thermoplastic polyurethane (TPU), which has compromised its application and posed a significant threat to human life. Here, the hydrothermal-citrate complexation method synthesised the rare earth Mn-based composite catalyst and blended with TPU to mitigate smoke release and toxic gas generation during TPU combustion. The results demonstrate that the inclusion of 3 wt% Mn-La and Mn-Ce catalysts into TPU leads to a 41.3% and 33.6% decrease in maximum smoke density (Ds max), respectively, along with a 52.4% and 50.5% reduction in peak CO production rate (pCOPR). The mechanism of rare earth Mn-based catalyst-based smoke suppression and toxicity reduction in TPU is explained at a microscopic scale based on density functional theory (DFT) research: the introduction of catalyst bolsters the adsorption of O2 and CO on the surface of TPU nanocomposites and facilitates the oxidation of CO. Additionally, it can expedite the formation of dense carbon layers and impede heat and mass transfer. The TPU nanocomposites exhibit excellent flame retardancy and effective smoke suppression. A feasible strategy for manufacturing fire-safety TPU nanocomposites with favorable comprehensive properties is proposed.

源语言英语
页(从-至)30-39
页数10
期刊Journal of Colloid and Interface Science
679
DOI
出版状态已出版 - 2月 2025
已对外发布

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Li, S., Wang, C., Cai, W., Xu, W., Qi, L., Wang, J., Zhang, M., Song, Z., Zhang, D., Gao, J., Song, L., Zhu, H., & Xing, W. (2025). Significantly suppressing CO release achieved by the catalysis effect of nanostructured rare earth/manganese oxides: Application in flame retardant thermoplastic polyurethane. Journal of Colloid and Interface Science, 679, 30-39. https://doi.org/10.1016/j.jcis.2024.10.089