Thermal hazard of nitrocellulose with different degrees of oxidation

IF 4.8 3区工程技术 Q2 ENGINEERING, CHEMICAL

Journal of Loss Prevention in The Process Industries Pub Date : 2026-04-01 Epub Date: 2025-12-24 DOI:10.1016/j.jlp.2025.105903

Yun-Ting Tsai , Zijun Wang , Jieyu Chen , Yi Yang

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引用次数: 0

Abstract

This study systematically examines the effects of oxidation degree on the microstructure, functional groups, and thermal stability of nitrocellulose (NC) fibers. Oxidation at 80 °C and 100 °C significantly increased surface cracks, nodule formation, and the specific surface area, especially after 6 h of oxidation. No new functional groups were formed during oxidation, but the —NO₂ group showed notable degradation, with N₂O being the primary volatile product. The NC-80-6H sample (oxidized at 80 °C for 6 h) exhibited the lowest decomposition temperature (194.96 °C) and the highest heat release rate (10.25 mW mg⁻¹), indicating a elevated thermal hazard. The thermal decomposition process consisted of three stages: initial (50–155 °C), acceleration (155°C–T_p), and decay (T_p–240 °C). Oxidized samples showed longer decomposition times but more intense reactions. These findings provide a theoretical basis for enhancing the safety of NC during industrial storage and transportation.

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硝基纤维素不同氧化程度的热危害

本研究系统地考察了氧化程度对硝基纤维素（NC）纤维微观结构、官能团和热稳定性的影响。80°C和100°C氧化显著增加了表面裂纹、结核形成和比表面积，特别是氧化6 h后。氧化过程中没有形成新的官能团，但-NO2基团降解明显，主要挥发产物为N2O。NC-80-6H样品（在80℃氧化6 h）表现出最低的分解温度（194.96℃）和最高的放热率（10.25 mW mg−1），表明热危害增加。热分解过程分为三个阶段：初始阶段（50-155℃）、加速阶段（155℃- tp）和衰变阶段（Tp-240℃）。氧化后的样品分解时间更长，反应更激烈。研究结果为提高数控加工在工业储运过程中的安全性提供了理论依据。

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 Loss Prevention in The Process Industries 工程技术-工程：化工

CiteScore

7.20

自引率

14.30%

发文量

226

审稿时长

52 days

期刊介绍： The broad scope of the journal is process safety. Process safety is defined as the prevention and mitigation of process-related injuries and damage arising from process incidents involving fire, explosion and toxic release. Such undesired events occur in the process industries during the use, storage, manufacture, handling, and transportation of highly hazardous chemicals.