Using thermal analysis with kinetic calculation method to assess the thermal stability of azo compound on construction materials |
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| Institution: | 1. Graduate School of Engineering Science and Technology, National Yunlin University of Science and Technology (YunTech), 123, University Rd., Sec. 3, Douliou, Yunlin, 64002, Taiwan;2. Department of Civil and Construction Engineering, YunTech, 123, University Rd., Sec. 3, Douliou, Yunlin, 64002, Taiwan;1. Industry School of Standardization, University of Jinan, Jinan, China;2. State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, China;3. Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Nanjing University of Information Science & Technology, Nanjing, Jiangsu, China;1. Department of Materials Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran;2. Pars Oil and Gas Company (POGC), Asaluyeh, Bushehr, Iran;3. Isfahan Gas Company, Isfahan, Iran;1. School of Safety Science and Engineering, Xi''an University of Science and Technology, Xi''an, 710054, China;2. Shaanxi Industrial Process Safety and Emergency Rescue Engineering Technology Research Center, Xi''an University of Science and Technology, Xi''an, 710054, China;3. Shaanxi Key Laboratory of Coal Fire Disaster Prevention and Control, Xi''an University of Science and Technology, Xi''an, 710054, China;4. Department of Safety Health, And Environmental Engineering, National Yunlin University of Science and Technology, 123, University Rd., Sec 3, Douliou, Yunlin, 64002, Taiwan, ROC;1. College of Safety Science and Engineering, Nanjing Tech University, Nanjing, 211816, China;2. Jiangsu Key Laboratory of Hazardous Chemicals Safety and Control, Nanjing Tech University, Nanjing, 211816, China;1. Q Rådgivning AS, Øvregata 126, 5527, Haugesund, Norway;2. Department of Physics and Technology, University of Bergen, 5020, Bergen, Norway;3. Fire Disasters Research Group, Department of Safety, Chemistry and Biomedical Laboratory Sciences, Western Norway University of Applied Sciences, 5528, Haugesund, Norway;4. Gassco Inc., Bygnesvegen 75, 4250, Kopervik, Norway;1. Hunan University of Science and Technology, School of Resource, Environment and Safety Engineering, Xiangtan, Hunan, 411201, China;2. Central South University, School of Resources and Safety Engineering, Changsha, Hunan, 410083, China |
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| Abstract: | The application of construction polymers in engineering and alternative materials has always occupied a place in the market. In the production process of polymer resins, initiators can be used to lower the polymerization reaction energy threshold, which can improve reaction efficiency and reduce energy loss. However, as a commonly used energetic substance in the polymerization process, azos have caused related process hazards due to their exothermic characteristics. Because of this, it is essential to examine and analyze the thermal hazard characteristics of emerging azo substances, such as 2-cyanopropan-2-imemicarbazide (CABN). Although previous literature performs the calculation on related thermal hazard parameters of CABN, there is still exists a void for discussion in estimating the reaction model to avoid analogous hazards and enhance the existing thermal analysis. Based on the past literature, the reaction model is improved with thermogravimetric analysis as evidence. The revised thermal hazard parameters are calculated as the basis of control and mitigation measures, the kinetic model is used to estimate the modified safety parameters, and in the judgment of the runaway reaction, the critical temperature of the runaway is found by analyzing the influence of slight changes in ambient temperature on the reaction temperature. The results show that the critical temperature that causes CABN to enter the runaway reaction is delayed, and the hazard is lower than in the storage situation. Therefore, the thermal hazard to CABN mainly focuses on the safety environment and measures during storage. |
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| Keywords: | Construction polymers Polymer resins Thermal hazard Thermogravimetric analysis Critical temperature |
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