Di(2,4-dichlorobenzoyl) peroxide (DCBP), as an important organic peroxide (ops), is commonly used as a vulcanizing agent in the vulcanization process of organosilicon pressure-sensitive rubber belts. Due to double peroxide bonds, DCBP may incur decomposition and release much energy. The thermal decomposition characteristics of DCBP were investigated by differential scanning calorimetry (DSC). The initial decomposition temperature (T₀), peak temperature (T_p), and heat of decomposition (ΔH) have been obtained from non-isothermal experimental data. The autocatalytic properties are determined by DCBP isothermal experiments. Based on the Kissinger, Flynn–Wall–Ozawa (FWO), Starink, and Malek methods, the kinetic analysis of the experimental results obtained from the non-isothermal experiments was carried out. The three kinetic factors, such as the apparent activation energy E_α, the pre-exponential factor A, and the mechanism function f(α), were calculated. The thermodynamic parameters such as the maximum temperature rise rate ((dT/dt)_max) and adiabatic temperature rise (ΔT_ad) under adiabatic conditions were obtained by accelerated rate calorimetry (ARC). The kinetic factors were calculated. The risk assessment of DCBP was carried out through the oxygen balance method and Self-Accelerating Decomposition Temperature (SADT) to provide safety guidance for DCBP in practical applications.

中文翻译：

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二（2,4-二氯苯甲酰）过氧化物 （DCBP） 的热分解特性和热危害评估


二（2,4-二氯苯甲酰）过氧化物（DCBP）作为一种重要的有机过氧化物（ops），在有机硅压敏胶带的硫化过程中常用作硫化剂。由于双过氧化物键，DCBP 可能会发生分解并释放大量能量。采用差示扫描量热法 （DSC） 研究了 DCBP 的热分解特性。初始分解温度 （T₀）、峰值温度 （T_p） 和分解热 （ΔH） 已从非等温实验数据中获得。自催化特性由 DCBP 等温实验确定。基于 Kissinger、Flynn-Wall-Ozawa （FWO）、Starink 和 Malek 方法，对非等温实验获得的实验结果进行了动力学分析。计算了表观活化能 E_α、指数前因子 A 和机理函数 f（α 等三个动力学因子。通过加速速率量热法 （ARC） 获得绝热条件下的最大升温速率 （（dT/dt）_max） 和绝热温升 （ΔT_ad） 等热力学参数。计算动力学因素。通过氧平衡法和自加速分解温度 （SADT） 进行 DCBP 的风险评估，为实际应用中的 DCBP 提供安全指导。