为了防止RDX在生产过程中发生爆炸事故,采用自行设计的临界爆温测试装置测试了RDX溶液的临界爆温.结果表明,0.4 g RDX在较高温度下加热时只发生分解反应而不会发生爆炸;RDX质量分数为4％～8％时,RDX溶液在193.0℃左右迅速分解并发生爆炸...为了防止RDX在生产过程中发生爆炸事故,采用自行设计的临界爆温测试装置测试了RDX溶液的临界爆温.结果表明,0.4 g RDX在较高温度下加热时只发生分解反应而不会发生爆炸;RDX质量分数为4％～8％时,RDX溶液在193.0℃左右迅速分解并发生爆炸,从而得出丙酮对RDX溶液热分解有一定的催化作用.在RDX溶液质量分数为4％～8％时,浓度变化对RDX溶液的临界爆温影响较小;当RDX溶液质量分数低于4％时,RDX溶液不发生爆炸.展开更多
为了防止RDX在生产以及使用过程中发生爆炸事故,采用本实验室自行设计的临界爆温测试装置,对RDX溶液的临界爆温进行了测试。结果显示,0.3 g RDX在高温下加热时,只会发生热分解反应,反应程度不会引起爆炸;RDX质量分数为3%-7%时,RDX溶液...为了防止RDX在生产以及使用过程中发生爆炸事故,采用本实验室自行设计的临界爆温测试装置,对RDX溶液的临界爆温进行了测试。结果显示,0.3 g RDX在高温下加热时,只会发生热分解反应,反应程度不会引起爆炸;RDX质量分数为3%-7%时,RDX溶液不仅会发生强烈的热分解反应使溶液温度迅速升高,而且会在191℃左右发生爆炸,从而确定,甲苯对RDX溶液的热分解起到一定的催化作用;RDX 3%-7%的质量分数变化,对临界爆炸温度影响很小;当RDX溶液质量分数低于3%时,RDX溶液不发生爆炸。展开更多
In order to study the relationship between charge size and thermal initiation critical temperature of explosive in defined conditions,cook-off test about JH explosive was carried out at a heating rate of 1 ℃/min usin...In order to study the relationship between charge size and thermal initiation critical temperature of explosive in defined conditions,cook-off test about JH explosive was carried out at a heating rate of 1 ℃/min using self-designed cook-off experiment setup based on thermostatic control technology.Numerical simulation was conducted to study the effects of different charge sizes on thermal initiation critical temperature of explosives with FLUENT software.Experiment results show that there is a thermal initiation critical temperature in cook-off bomb.Simulation results show that when the ratio of the length to diameter of explosives grains is a fixed value,the thermal initiation critical temperature of explosives decreases with the increase of the diameter of explosives grains.When the grains diameter of explosives increase up to a certain value,the influence of charge size on thermal initiation critical temperature tends to be weakened.Charge size has no influence on the ignition point of explosives.The ignition point is always in the center of the grain.展开更多
文摘为了防止RDX在生产过程中发生爆炸事故,采用自行设计的临界爆温测试装置测试了RDX溶液的临界爆温.结果表明,0.4 g RDX在较高温度下加热时只发生分解反应而不会发生爆炸;RDX质量分数为4％～8％时,RDX溶液在193.0℃左右迅速分解并发生爆炸,从而得出丙酮对RDX溶液热分解有一定的催化作用.在RDX溶液质量分数为4％～8％时,浓度变化对RDX溶液的临界爆温影响较小;当RDX溶液质量分数低于4％时,RDX溶液不发生爆炸.
文摘为了防止RDX在生产以及使用过程中发生爆炸事故,采用本实验室自行设计的临界爆温测试装置,对RDX溶液的临界爆温进行了测试。结果显示,0.3 g RDX在高温下加热时,只会发生热分解反应,反应程度不会引起爆炸;RDX质量分数为3%-7%时,RDX溶液不仅会发生强烈的热分解反应使溶液温度迅速升高,而且会在191℃左右发生爆炸,从而确定,甲苯对RDX溶液的热分解起到一定的催化作用;RDX 3%-7%的质量分数变化,对临界爆炸温度影响很小;当RDX溶液质量分数低于3%时,RDX溶液不发生爆炸。
文摘In order to study the relationship between charge size and thermal initiation critical temperature of explosive in defined conditions,cook-off test about JH explosive was carried out at a heating rate of 1 ℃/min using self-designed cook-off experiment setup based on thermostatic control technology.Numerical simulation was conducted to study the effects of different charge sizes on thermal initiation critical temperature of explosives with FLUENT software.Experiment results show that there is a thermal initiation critical temperature in cook-off bomb.Simulation results show that when the ratio of the length to diameter of explosives grains is a fixed value,the thermal initiation critical temperature of explosives decreases with the increase of the diameter of explosives grains.When the grains diameter of explosives increase up to a certain value,the influence of charge size on thermal initiation critical temperature tends to be weakened.Charge size has no influence on the ignition point of explosives.The ignition point is always in the center of the grain.
