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Lifetime Expectancy of (slow) Autocatalytic Decomposing Materials


A large number of materials and substances show decomposition reactions during handling, production and transport. The amount of heat and pressure generated during this decomposition will determine if a substance can be considered thermally stable in arnspecific packaging size and temperature. Often the so called Self Accelerating Decomposition Temperature (SADT) is calculated for materials showing decomposition. This temperature is defined as the temperature at which the amount of heat produced byrnthe decomposition reaction is equal to the heat loss of its packaging. For materials decomposing according to a pseudo zero order reaction (Arrhenius like reactions) this method can be considered correct. For materials showing autocatalytic decompositions the amount of heat generated is dependent on product lifetime and the conditions it wasrnexposed to, which we will call history. This is in sharp contrast to the constant heat production that is shown in case of apseudo zero order reaction.rnIn order to calculate a conservative value for the SADT of autocatalytic decomposingrnmaterials the heat generated at the maximum speed of the reaction should be used. Thernspeed of decomposition varies a lot among different autocatalytic decomposing materialsrnthe under storage conditions. The time it takes to reach critical levels of heat productionrncan vary between hours to years depending on the type of material. For these type ofrnmaterials it is not relevant to determine the temperature at which self-heating occurs, butrnthe time it takes to reach a critical level of heat production at a certain temperature andrnpackage size.rnThis paper will first discuss the flaws of the different methods to determine the SADT inrncase of autocatalytic decomposing materials. Secondly a method is proposed to determine the life time expectancy of autocatalytic decomposing materials, taken intornaccount for the history of the material.......

【作者名称】: Vincent van den Hoogenband, Wim A. Mak, Nico H.A. Versloot
【作者单位】: TNO Defence, Security and Safety, Department of Energetic Materials Rijswijk, The Netherlands, TNO Defence, Security and Safety, Department of Energetic Materials Rijswijk, The Netherlands, TNO Defence, Security and Safety, Department of Energetic Materials Rijswijk, The Netherlands
【关 键 词】: Lifetime Expectancy of (slow) Autocatalytic Decomposing Materials
【会议名称】: Proceedings of the 43rd annual loss prevention symposium
【期刊论文数据库】: [DBS_Articles_01]
【期刊论文编号】: 100,828,008
【摘要长度】: 1,941
【会议地点】: Tampa, FL(US);Tampa, FL(US);Tampa, FL(US)
【会议组织】: TNO Defence, Security and Safety, Department of Energetic Materials Rijswijk, The Netherlands;TNO Defence, Security and Safety, Department of Energetic Materials Rijswijk, The Netherlands;TNO Defence, Security and Safety, Department of Energetic Materials Rijswijk, The Netherlands;
【会议时间】: 2009
【上篇论文】: 外文会议 - HWMSE APPROACH FOR MACRO-ECONOMIC FORECAST AND ADJUSTMENT ISSUES
【下篇论文】: 外文会议 - Polycentric Integrated Assessment

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