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含锡酸钴的绿色阻燃硬质聚氨酯泡沫，用于提高热稳定性、阻燃性和抑烟性能。

Green flame-retardant rigid polyurethane foam with cobalt hydroxystannate to improve the thermal stability, flame retardancy and smoke suppression properties.

作者信息

Zhang Xu, Wang Zhaoqian, Sun Simiao, Wang Zhi, Xie Hua

机构信息

Liaoning Key Laboratory of Aircraft Fire Explosion Control and Reliability Airworthiness Technology, Shenyang Aerospace University, Shenyang, 110136, China.

School of Safety Engineering, Shenyang Aerospace University, Shenyang, 110136, China.

出版信息

Sci Rep. 2024 Aug 27;14(1):19805. doi: 10.1038/s41598-024-70812-w.

DOI:10.1038/s41598-024-70812-w

PMID:39191843

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11349981/

Abstract

The ecological benefits and concerns surrounding fossil fuels had led to increased interest in bio-based rigid polyurethane foam (RPUF). Nonetheless, due to its flammability, it had limited application in various fields. To solve this problem, a green bio-flame retardant, cobalt hydroxystannate (CoSn(OH)), was prepared and compounded with montmorillonite (MMT) and chick feather protein (CF), and applied to RPUF, which not only realized the regeneration of resources, but also provided RPUF with better thermal stability, flame retardancy and smoke suppression properties. The experimental results showed that when 3 wt% CoSn(OH) was added, the RPUF (CF1/MMT3/Co3) had the greatest activation energy. In addition, the peak heat release rate (PHRR) and total heat release (THR) of CF1/MMT3/Co3 decreased by 12.73%, and 11.16% respectively, compared with no CoSn(OH). In addition, its Ds decreased by 28.9% and the light transmittance increased by 17.6% compared with the RPUF without CoSn(OH). At the same time, its peak smoke production rate (PSPR) and the total smoke release (TSR) decreased by 25% and 18%. And CF1/MMT3/Co3 also had the lowest fire risk evaluation index. This study presented possibilities for practical utilization of the RPUF substances founded on bio-based flame inhibitors.

摘要

围绕化石燃料的生态效益和问题引发了人们对生物基硬质聚氨酯泡沫（RPUF）的兴趣增加。尽管如此，由于其易燃性，它在各个领域的应用受到限制。为了解决这个问题，制备了一种绿色生物阻燃剂——羟基锡酸钴（CoSn(OH)），并将其与蒙脱石（MMT）和鸡毛蛋白（CF）复合，应用于RPUF，这不仅实现了资源的再生，还赋予了RPUF更好的热稳定性、阻燃性和抑烟性能。实验结果表明，当添加3 wt%的CoSn(OH)时，RPUF（CF1/MMT3/Co3）具有最大的活化能。此外，与未添加CoSn(OH)相比，CF1/MMT3/Co3的峰值热释放速率（PHRR）和总热释放量（THR）分别降低了12.73%和11.16%。此外，与未添加CoSn(OH)的RPUF相比，其Ds降低了28.9%，透光率提高了17.6%。同时，其峰值产烟速率（PSPR）和总产烟量（TSR）分别降低了25%和18%。并且CF1/MMT3/Co3的火灾风险评估指数也是最低的。本研究为基于生物基阻燃剂的RPUF物质的实际应用提供了可能性。