O-3-氯-2-丙烯基羟胺热危险性及其淬灭研究

为研究O-3-氯-2-丙烯基羟胺(简称氯代胺)的热危险性及其淬灭,采用差示扫描量热仪(DSC)和绝热量热仪(Phi-TEC)对其进行了测试.DSC测试结果表明,与气氛、升温速率相比,样品质量对氯代胺热危险性的影响较大,当氯代胺质量超过1 mg时,热分解过程中会出现爆炸性放热.在样品质量为0.56 mg、升温速率为4 ℃...

Study on thermal hazard and quenching of O-(3-chloro-2-propenyl)-hydroxylamine

In order to study the thermal hazard and quenching of O-(3-chloro-2-propenyl)-hydroxyla-mine, differential scanning calorimeter (DSC) and adiabatic calorimeter (Phi-TEC) were used. DSC test results show that compared with testing atmosphere and heating rate, sample mass has a greater influence on the thermal risk of O-(3-chloro-2-propenyl)-hydroxylamine. When the mass of O-(3-chloro-2-propenyl)-hydroxylamine exceeds 1 mg, its DSC curve at the peak temperature is very sharp, which indicates an explosive exothermic reaction occurs. Under the DSC test conditions of 0.56 mg, 4 ℃·min^-1 and air atmosphere for O-(3-chloro-2-propenyl)-hydroxylamine, the onset temperature of decomposition reaction is 114 ℃, the peak temperature is 192 ℃, and the specific heat release is 2 105 J·g^-1. Phi-TEC test results show that in addition to releasing a large amount of heat, a large amount of non-condensable gas was produced during the thermal decomposition of O-(3-chloro-2-propenyl)-hydroxylamine, which may lead to an overpressure explosion in a hermatic container. A preliminary study shows that at the initial exothermic stage of O-(3-chloro-2-propenyl)-hydroxylamine the decomposition reaction can be quenched by adding 1.5 times the mass of O-(3-chloro-2-propenyl)-hydroxylamine of water. In order to obtain a practical quenching process, further detailed research is needed.