Fabrication of flame-retardant and smoke-suppressant rigid polyurethane foam modified by hydrolyzed keratin

IF 1.1 4区工程技术 Q4 ENGINEERING, CHEMICAL

International Polymer Processing Pub Date : 2023-02-14 DOI:10.1515/ipp-2022-4303

Xu Zhang, Chen Xu, Zhi Wang, Hua Xie

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引用次数: 2

Abstract

Abstract Rigid polyurethane foam (RPUF) has been fabricated and modified by hydrolyzed keratin to improve its flame retardancy and smoke suppression. Then, the limiting oxygen index (LOI), cone calorimeter (CONE), thermogravimetric analyzer and scanning electron microscope (SEM) were used to characterize the modified RPUFs. It was found that the LOI of the modified RPUFs increased with the presence of hydrolyzed keratin. In addition, the peak heat release rate (PHRR) and total heat release (THR) of the modified RPUF tended to decrease. The HRR of RPUF-HK5 reduced 28.8 kW/m2 compared with RPUF-0, and the THR of RPUF-HK5 was 0.74 MJ/m2 lower than that of RPUF-0. RPUF-HK5 had the most obvious smoke suppression effect. Compared with RPUF-0, the smoke density (Ds) and light transmittance (T) of RPUF-HK5 decreased by 8.88 and increased by 11.26%, respectively. The current research results showed that hydrolyzed keratin can improve the flame-retardant and smoke-suppression performances of RPUFs and that 5 wt% hydrolyzed keratin was the most suitable ratio for the modified RPUF.

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水解角蛋白改性阻燃抑烟硬质聚氨酯泡沫的制备

摘要采用水解角蛋白对硬质聚氨酯泡沫塑料（RPUF）进行制备和改性，以提高其阻燃性和抑烟性。然后，用极限氧指数（LOI）、锥形量热计（cone）、热重分析仪和扫描电子显微镜（SEM）对改性的RPUFs进行了表征。研究发现，改性RPUFs的LOI随着水解角蛋白的存在而增加。此外，改性RPUF的峰值放热率（PHRR）和总放热率（THR）有降低的趋势。与RPUF-0相比，RPUF-HK5的HRR降低了28.8kW/m2，并且RPUF-HK5的THR比RPUF-0低0.74MJ/m2。RPUF-HK5抑烟效果最为明显。与RPUF-0相比，RPUF-HK5的烟密度（Ds）和透光率（T）分别下降了8.88和11.26%。目前的研究结果表明，水解角蛋白可以提高RPUF的阻燃和抑烟性能，其中5wt%的水解角蛋白是改性RPUF最合适的比例。

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来源期刊

International Polymer Processing 工程技术-高分子科学

CiteScore

2.20

自引率

7.70%

发文量

审稿时长

6 months

期刊介绍： International Polymer Processing offers original research contributions, invited review papers and recent technological developments in processing thermoplastics, thermosets, elastomers and fibers as well as polymer reaction engineering. For more than 25 years International Polymer Processing, the journal of the Polymer Processing Society, provides strictly peer-reviewed, high-quality articles and rapid communications from the leading experts around the world.