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首页> 外文期刊>Journal of Thermal Analysis and Calorimetry >Degradation of aged nitrocellulose investigated by thermal analysis and chemiluminescence
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Degradation of aged nitrocellulose investigated by thermal analysis and chemiluminescence

机译：通过热分析和化学发光研究老化的硝酸纤维素的降解

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摘要

Non-isothermal thermogravimetry, differential scanning calorimetry and chemiluminescence were used for characterization of degradation of pre-aged nitrocellulose in order to elucidate the optimal route of extrapolation of rate constants from the region of the autoaccelerated reaction to lower temperatures. First order rate constants, the one characterizing the decomposition of nitrocellulose in the rate auto-accelerating region and the two constants corresponding to the slow process in induction period of nitrocellulose decomposition were shown to provide a sufficient description. The rate constants determined for several temperatures were shown to depend on the amount of char residue which is formed from pre-aged samples after the thermogravimetry runs from 40 to 550 °C.
机译：非等温热重法，差示扫描量热法和化学发光法用于表征老化硝化纤维素的降解，以阐明速率常数从自动加速反应区域外推至较低温度的最佳途径。一阶速率常数，表征速率自动加速区域中的硝酸纤维素分解的一个常数以及与硝酸纤维素分解诱导期中的缓慢过程相对应的两个常数被提供了足够的描述。结果表明，在几个温度下确定的速率常数取决于热重分析仪在40至550°C下从老化样品中形成的残炭量。

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