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首页> 外文期刊>Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems >Combined use of adiabatic calorimetry and heat conduction calorimetry for quantifying propellant cook-off hazards
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Combined use of adiabatic calorimetry and heat conduction calorimetry for quantifying propellant cook-off hazards

机译:绝热量热法和热传导量热法结合使用以量化推进剂蒸煮危险

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摘要

Recent work performed at DERA (now QinetiQ) has shown how accelerating rate calorimetry (ARC) can be used to obtain time to maximum rate curves using larger samples of energetic materials. The use of larger samples reduces the influence of thermal inertia, permitting experimental data to be gathered at temperatures closer to those likely to be encountered during manufacture, transportation or storage of an explosive device. However, in many cases, extrapolation of the time to maximum rate curve will still be necessary. Because of its low detection limit compared to the ARC, heat conduction calorimetry can be used to obtain data points at, or below, the region where an explosive system might exceed its temperature of no return and undergo a thermal explosion. Paired ARC and heat conduction calorimetry experiments have been conducted on some energetic material samples to explore this possibility further. Examples of where both agreement and disagreement are found between the two techniques are reported and the significance of these discussed. Ways in which combining ARC and heat conduction calorimetry experiments can enhance, complement and validate the results obtained from each technique are examined. (C) 2003 Elsevier Science B.V. All rights reserved. [References: 7]
机译:在DERA(现为QinetiQ)进行的最新工作表明,如何使用更大的高能材料样品,使用加速量热法(ARC)来获得时间到最大速率曲线。使用较大的样品可以减少热惯性的影响,从而可以在更接近爆炸装置的制造,运输或存储过程中可能遇到的温度下收集实验数据。但是,在许多情况下,仍然需要将时间推断为最大速率曲线。由于与ARC相比其检测极限较低,因此可以使用热导量热法获得爆炸系统可能超过其回火温度并发生热爆炸的区域或以下的数据点。已经对一些高能材料样品进行了成对的ARC和热传导量热法实验,以进一步探索这种可能性。报告了在两种技术之间找到一致和不同意见的示例,并讨论了这些方法的重要性。研究了将ARC和热传导量热法实验相结合可以增强,补充和验证从每种技术获得的结果的方法。 (C)2003 Elsevier Science B.V.保留所有权利。 [参考:7]

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