Use of montmorillonite to improve flame retardancy, thermal stability and reducing smoke toxicity of chicken feather protein-based rigid polyurethane foam

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2023-10-17 DOI:10.1002/vnl.22062

Xu Zhang, Simiao Sun, Dehe Yuan, Zhi Wang, Hua Xie

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引用次数: 0

Abstract

The aim of this article is to solve the problem of improving the flame retardancy of rigid polyurethane foam (RPUF) while improving the environmental pollution caused by flame retardancy. Using the special layered structure of montmorillonite (MMT) and the stable chemical bond formed by the reaction with chicken feather (CF) protein, RPUF co-modified with MMT and CF was successfully prepared by using the “one-step method” of all-water foaming. It was found by experiments and theoretical calculations that the addition of MMT improved the flame retardancy of the samples. When 3 wt% of MMT was added, RPUF-CF1/MMT3 had the highest initial decomposition temperature and the largest activation energy, and its thermal stability was the best. In addition, RPUF-CF1/MMT3 had the smallest peak heat release rate (28.77, 32.04, and 42.18 kW/m²) and total heat release (1.87, 2.15, and 2.38 MJ/m²) at different radiation fluxes. Meanwhile, RPUF-CF1/MMT3 had the smallest smoke density (32.17 and 28.32), the largest light transmission (57.05% and 60.91%), the lowest toxic gas emission and the lowest fire risk.

Highlights

Flame retardant modified bioprotein-based RPUF by MMT is proposed.
The flame retardant mechanism depends on the “sandwich biscuit” structure of MMT and its POSi bond with chicken hair protein.
MMT-modified RPUF can improve its thermal stability, flame retardancy and smoke toxicity.

Abstract Image

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使用蒙脱石改善以鸡毛蛋白为基础的硬质聚氨酯泡沫的阻燃性、热稳定性并降低烟雾毒性

本文旨在解决提高硬质聚氨酯泡沫（RPUF）阻燃性的问题，同时改善阻燃造成的环境污染。利用蒙脱石（MMT）的特殊层状结构和与鸡毛（CF）蛋白反应形成的稳定化学键，采用全水发泡 "一步法 "成功制备了蒙脱石和鸡毛（CF）共改性 RPUF。通过实验和理论计算发现，MMT 的加入提高了样品的阻燃性。当添加 3 wt% 的 MMT 时，RPUF-CF1/MMT3 的初始分解温度最高，活化能最大，热稳定性最好。此外，在不同的辐射通量下，RPUF-CF1/MMT3 的峰值放热率（28.77、32.04 和 42.18 kW/m2）和总放热量（1.87、2.15 和 2.38 MJ/m2）最小。同时，RPUF-CF1/MMT3 的烟密度最小（32.17 和 28.32），透光率最大（57.05% 和 60.91%），有毒气体排放量最少，火灾风险最低。亮点提出了 MMT 阻燃改性生物蛋白基 RPUF。其阻燃机理取决于 MMT 的 "夹心饼干 "结构及其与鸡毛蛋白的 POSi 键。 MMT 改性 RPUF 可提高其热稳定性、阻燃性和烟毒性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Vinyl & Additive Technology 工程技术-材料科学：纺织

CiteScore

5.40

自引率

14.80%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.