基于近红外技术的火药安定期评价新方法

New Approach for Evaluating the Stability Period of Propellant Based on Near-infrared Spectroscopy

为解决现存火药安定性评价方法安全性差、操作繁琐、耗时等问题,提出一种火药安定期评价新方法。采用热加速老化方法获取不同安定剂含量的实验试样,开展火药老化的动力学方程研究。借助近红外技术与化学计量学方法建立了安定剂含量的近红外定量模型,经过对模型的分析和优化得到安定剂含量的最佳定量模型。实例应用结果表明:该模型的决定系数R2为0.999 6,预测最大误差低于0.04%,证明了该模型具有高度可行性,可实现火药安定期的无损、快速、实时评估。

A new approach to evaluate the stability period of propellant is presented to solve the problems of poor safety,fussy operation and time-consuming of the existing methods for evaluating the stability of propellants. The propellant samples with different stabilizer contents were prepared by thermal accelerated aging test,and the kinetic equation of propellant aging was studied. A quantitative model for the determination of stabilizer content in propellant is established using near-infrared spectroscopy and chemometrics algorithm. The best quantitative model is obtained by analyzing and optimizing the proposed model. Applied results show that the determination coefficient（ R2） of the model is 0. 999 6,and the maximum predicted error is no larger than 0. 04%. It proves that the proposed model can be used for the nondestructive,rapid and real-time evaluation of the stability period of propellant.