摘要
为研究乙烯基乙炔的热危险性，采用C80微量热仪研究了乙烯基乙炔在空气中的放热现象，得到了升温速率对乙烯基乙炔聚合放热的影响、反应活化能以及绝热条件下达到最大反应速率所需时间TMRad。结果表明：随着升温速率的增大，乙烯基乙炔的起始放热温度和最大放热温度随之升高；活化能范围为50～170kJ／mol；TMRad为1，8，24，48h时对应的起始温度分别为112．69，99．65，93．78，90．23℃。
To evaluate the thermal hazard of vinyl a- cetylene, this paper investigated the heat release phe- nomena of vinyl acetylene in air using C80 micro - calorimeter. The effect of heating rate on the heat re- lease due to polymerization of VA, the reaction acti- vation energy and the time required to reach maximum reaction rate under adiabatic condition （TMRad） were revealed. It was shown that： first, the initial and the peak exothermic temperature raised as the heating rate increased; second, the reaction activation energy ranged from 50 - 170 kJ/mol; the initial exothermic temperatures were 112.69, 99.65, 93.78, 90.23 ℃, when TMRad were 1, 8, 24, 48 h, respectively.
出处
《安全、健康和环境》
2015年第11期38-41,共4页
Safety Health & Environment
