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含组氨酸和改性氧化石墨烯的硬质聚氨酯泡沫的燃烧行为

Burning Behaviour of Rigid Polyurethane Foams with Histidine and Modified Graphene Oxide.

作者信息

Sałasińska Kamila, Leszczyńska Milena, Celiński Maciej, Kozikowski Paweł, Kowiorski Krystian, Lipińska Ludwika

机构信息

Department of Chemical, Biological and Aerosol Hazards, Central Institute for Labour Protection-National Research Institute, 00-701 Warsaw, Poland.

Faculty of Materials Science and Engineering, Warsaw University of Technology, 02-507 Warsaw, Poland.

出版信息

Materials (Basel). 2021 Mar 3;14(5):1184. doi: 10.3390/ma14051184.

DOI:10.3390/ma14051184
PMID:33802345
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7959139/
Abstract

Since rigid polyurethane (PU) foams are one of the most effective thermal insulation materials with widespread application, it is an urgent requirement to improve its fire retardancy and reduce the smoke emission. The current work assessed the fire behavior of PU foam with non-halogen fire retardants system, containing histidine (H) and modified graphene oxide (GO). For investigated system, three loadings (10, 20, and 30 wt.%) were used. The Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), thermogravimetric analysis, cone calorimetry (CC) and smoke density chamber tests as well as pre- and post-burning morphological evaluation using scanning electron microscope (SEM) were performed. Moreover, TGA combined with FT-IR was conducted to determine the substances, which could be evolved during the thermal decomposition of the PU with fire retardant system. The results indicated a reduction in heat release rate (HRR), maximum average rate of heat emission (MAHRE), the total heat release (THR) as well as the total smoke release (TSR), and maximum specific optical density (Ds) compared to the polyurethane with commercial fire retardant, namely ammonium polyphosphate (APP). A significantly improvement, especially in smoke suppression, suggested that HGO system may be a candidate as a fire retardant to reduce the flammability of PU foams.

摘要

由于硬质聚氨酯（PU）泡沫是应用广泛的最有效的保温材料之一，因此提高其阻燃性并减少烟雾排放是一项迫切需求。当前的工作评估了含有组氨酸（H）和改性氧化石墨烯（GO）的无卤阻燃剂体系的PU泡沫的燃烧行为。对于所研究的体系，使用了三种负载量（10、20和30重量%）。进行了傅里叶变换红外光谱（FT-IR）、差示扫描量热法（DSC）、热重分析、锥形量热法（CC）和烟密度室测试，以及使用扫描电子显微镜（SEM）进行的燃烧前和燃烧后的形态评估。此外，进行了TGA与FT-IR联用实验，以确定在含阻燃剂体系的PU热分解过程中可能释放的物质。结果表明，与含有商业阻燃剂聚磷酸铵（APP）的聚氨酯相比，热释放速率（HRR）、最大平均热释放速率（MAHRE）、总热释放（THR）以及总烟雾释放（TSR）和最大比光密度（Ds）均有所降低。显著的改进，尤其是在抑烟方面，表明HGO体系可能是一种降低PU泡沫可燃性的阻燃剂候选物。

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