The Contrastive Study of Desensitization Effects of Plasticizer on CYHPO

Abstract

Cyclohexanone peroxide (CYHPO) is an important raw material for the chemical industry. But it's easy to out of control which leads to explode. In order to reduce the risk, it is always mixed with different plasticizers during the production, transportation and storage. To research the different influence of plasticizers on CYHPO when it out of control and analyzing the thermal hazard of it, the runaway reaction of CYHPO (sampleA), mixture of CYHPO and dibutyl phthalate (DBP) in the same mass (sampleB), mixture of CYHPO and diethylene glycol dibenzoate (DEDB) in the same mass (sampleC), mixture which is mixed by half of mass CYHPO, quarter of mass DBP and quarter of mass DEDB (sampleD) are simulated by Accelerating Rate Calorimeter(ARC). From the test data, the comparison of the initial temperatures and the temperature rise rates of four samples were judged by Origin8.6, and the reaction order, the activation energy of four samples were calculated by rate constant model. Then thermal decomposition characteristic data under adiabatic conditions could be modified by thermal inertia factor, and the self-accelerating decomposition temperatures (SADT) were calculated by Semenov model. The results showed that mixture of DBP and DEDB can reduce the thermal hazards efficaciously. It can be seen that thermodynamic parameters is not the only way to judge the influence of plasticizers on CYHPO, the intensity of the runaway reaction also should be considered.