Alma Mater Studiorum-Università di Bologna, Dipartimento di Ingegneria Chimica, Mineraria e delle Tecnologie Ambientali, Bologna, Italy; Dipartimento di Ingegneria Industriale, Via Marzolo 9, 35131 Padova, Italy.
Health & Safety Laboratory, Harpur Hill, Buxton, Derbyshire SK 179 JN, United Kingdom.
J Hazard Mater. 2014 Apr 15;270:45-52. doi: 10.1016/j.jhazmat.2014.01.038. Epub 2014 Jan 30.
This paper analyzes the effect of an accelerator on the polymerisation of methyl methacrylate (MMA). This study is based on the results of an investigation of an accident in a manufacturing site for resins located in the United Kingdom. As sequence of event to cause the accident the following was assumed: during an unattended batch process a runaway undesired polymerisation of methyl methacrylate occurred, generating rapid vaporisation of monomer, which in contact with an ignition source, led to an explosion followed by a fire. Since no initiator for the polymerisation reaction had been jet added to the blend, it was supposed that the accelerator contributed to the onset of the undesired polymerisation. The accelerator involved in the accident t has therefore been tested by differential scanning calorimetry and adiabatic calorimetry. The experimental data allowed the authors to prove the hypothesis made and to define safety ranges for the polymerisation reaction.
本文分析了一种加速器对甲基丙烯酸甲酯（MMA）聚合的影响。本研究基于对英国一家树脂制造现场事故调查结果。造成事故的事件序列如下：在无人值守的批量过程中，甲基丙烯酸甲酯发生失控的不期望聚合，导致单体迅速蒸发，与点火源接触后引发爆炸，继而引发火灾。由于混合物中未喷射加入引发聚合反应的引发剂，因此推测加速剂促成了不期望的聚合。因此，事故中涉及的加速剂已通过差示扫描量热法和绝热量热法进行了测试。实验数据使作者能够验证所提出的假设，并为聚合反应定义安全范围。
