Kinetic and thermal safety analysis for tert-butyl peroxy-3,5,5-trimethylhexanoate by advanced calorimetric technology

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• 作者：Yi Yang ; Yun-Ting Tsai ; Chen-Rui Cao…
• 关键词：Environmental pollution ; Model ; fitting method ; Model ; free technique ; Process thermal accident ; Thermal stability parameters
• 刊名：Journal of Thermal Analysis and Calorimetry
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：127
• 期：3
• 页码：2253-2262
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Physical Chemistry; Analytical Chemistry; Polymer Sciences; Inorganic Chemistry; Measurement Science and Instrumentation;
• 出版者：Springer Netherlands
• ISSN：1588-2926
• 卷排序：127

文摘

Thermal stability parameters were evaluated for the decomposition reaction of tert-butyl peroxy-3,5,5-trimethylhexanoate (TBPMH), a free-radical initiator, by differential scanning calorimetry. According to the results, the apparent exothermic onset temperature, heat of decomposition, and time to maximum rate under adiabatic conditions of TBPMH were 103.0 °C, −924.0 kJ mol−1, and 9.81 min (at 90.0 °C), respectively. A kinetic model was also established under different nonisothermal conditions to evaluate the kinetic behavior of TBPMH by model-free technique and model-fitting method. The self-accelerating decomposition temperature (SADT) was calculated and was similar to that reported in the literature; the SADT values corresponding to various package sizes were also calculated, and an increase in mass caused a drop in SADT. These results can provide a solution to prevent runaway reactions during the storage and transportation of TBPMH, and the applied technique can be a substitute for the complicated procedures and large-scale experiments inherent in traditional analysis methods, thereby preventing process thermal accidents, environmental pollution, and energy depletion.