Study on the factors influencing the thermal runaway hazards of styrene-acrylonitrile bulk copolymerization

IF 3.1 2区化学 Q2 CHEMISTRY, ANALYTICAL

Thermochimica Acta Pub Date : 2024-11-21 DOI:10.1016/j.tca.2024.179912

Yang Liu , Weixin Li , Shudong Lin , Hui Liu , Zicheng Xie , Wanyan Li , Jiwen Hu , Xuefeng Gui

{"title":"Study on the factors influencing the thermal runaway hazards of styrene-acrylonitrile bulk copolymerization","authors":"Yang Liu , Weixin Li , Shudong Lin , Hui Liu , Zicheng Xie , Wanyan Li , Jiwen Hu , Xuefeng Gui","doi":"10.1016/j.tca.2024.179912","DOIUrl":null,"url":null,"abstract":"<div><div>The styrene-acrylonitrile bulk copolymerization reaction has a high risk of thermal runaway, but the factors influencing the thermal hazards of the reaction have not been adequately investigated. In this paper, the effects of different factors on the thermal runaway behavior of the styrene-acrylonitrile copolymerization are investigated using a combination of simulation and calorimetric testing. The simulation results indicate that increasing the proportion of styrene in the monomer feed significantly delays the onset of thermal runaway. The calorimetric results show that for di-tert-butyl peroxide (DTBP), azodiisobutyronitrile (AIBN) and tert-butyl peroxy benzoate (TBPB) initiators as examples, the TBPB-initiated copolymerization is found to have the maximum temperature-rising rate and pressure-rising rate. Under adiabatic runaway, the temperature and pressure change significantly with increasing TBPB concentration, indicating a great potential risk of thermal runaway. Calculation of kinetic parameters based on calorimetric data reveals thermal runaway mechanism.</div></div>","PeriodicalId":23058,"journal":{"name":"Thermochimica Acta","volume":"743 ","pages":"Article 179912"},"PeriodicalIF":3.1000,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thermochimica Acta","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S004060312400251X","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}

引用次数: 0

Abstract

The styrene-acrylonitrile bulk copolymerization reaction has a high risk of thermal runaway, but the factors influencing the thermal hazards of the reaction have not been adequately investigated. In this paper, the effects of different factors on the thermal runaway behavior of the styrene-acrylonitrile copolymerization are investigated using a combination of simulation and calorimetric testing. The simulation results indicate that increasing the proportion of styrene in the monomer feed significantly delays the onset of thermal runaway. The calorimetric results show that for di-tert-butyl peroxide (DTBP), azodiisobutyronitrile (AIBN) and tert-butyl peroxy benzoate (TBPB) initiators as examples, the TBPB-initiated copolymerization is found to have the maximum temperature-rising rate and pressure-rising rate. Under adiabatic runaway, the temperature and pressure change significantly with increasing TBPB concentration, indicating a great potential risk of thermal runaway. Calculation of kinetic parameters based on calorimetric data reveals thermal runaway mechanism.

查看原文本刊更多论文

苯乙烯-丙烯腈大量共聚热失控危害影响因素研究

苯乙烯-丙烯腈大体积共聚反应具有很高的热失控风险，但影响该反应热危害的因素尚未得到充分研究。本文采用模拟和量热测试相结合的方法，研究了不同因素对苯乙烯-丙烯腈共聚反应热失控行为的影响。模拟结果表明，增加单体进料中苯乙烯的比例可显著延缓热失控的发生。热量测定结果表明，以二叔丁基过氧化物（DTBP）、偶氮二异丁腈（AIBN）和过氧化苯甲酸叔丁酯（TBPB）引发剂为例，TBPB 引发的共聚具有最大的温度上升率和压力上升率。在绝热失控的情况下，温度和压力随着 TBPB 浓度的增加而显著变化，这表明热失控的潜在风险很大。基于量热数据的动力学参数计算揭示了热失控机制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Thermochimica Acta 化学-分析化学

CiteScore

6.50

自引率

8.60%

发文量

210

审稿时长

40 days

期刊介绍： Thermochimica Acta publishes original research contributions covering all aspects of thermoanalytical and calorimetric methods and their application to experimental chemistry, physics, biology and engineering. The journal aims to span the whole range from fundamental research to practical application. The journal focuses on the research that advances physical and analytical science of thermal phenomena. Therefore, the manuscripts are expected to provide important insights into the thermal phenomena studied or to propose significant improvements of analytical or computational techniques employed in thermal studies. Manuscripts that report the results of routine thermal measurements are not suitable for publication in Thermochimica Acta. The journal particularly welcomes papers from newly emerging areas as well as from the traditional strength areas: - New and improved instrumentation and methods - Thermal properties and behavior of materials - Kinetics of thermally stimulated processes