双基火药储存过程中安定剂含量的快速检测技术  

Rapid Determination of the Content of Stabilizer in Double-Base Propellants during Storage

作　　者：谢亮 邓国栋[1] 王伟斌 王照轩 XIE Liang;DENG Guodong;WANG Weibin;WANG Zhaoxuan(National Special Superfine Powder Engineering Research Center,Nanjing University of Science and Technology,Jiangsu Nanjing210094)

机构地区：[1]南京理工大学国家特种超细粉体工程技术研究中心,江苏南京210094

出　　处：《爆破器材》2022年第4期40-46,共7页Explosive Materials

摘　　要：为解决传统检测方法耗时长、操作复杂等问题,研究了近红外光谱法快速定量检测双芳-3双基火药中安定剂含量的可行性。通过分析安定剂的特征光谱区间,得到合适的建模波段。采用不同的光谱预处理方法和选取最佳主因子数优化模型,使用偏最小二乘法建立安定剂的定量校正模型,对模型进行了外部验证。结果表明:使用11001248 nm、13231515 nm波段,采用标准正态变量变化(SNV)预处理原始光谱,主因子数为7时建立的定量校正模型的预测准确性和稳定性较高。校正模型决定系数(R 2 C)以及交互验证的决定系数(R 2 CV)分别为0.991和0.987;校正标准偏差(R MSEC)和交互验证的标准偏差(R MSECV)分别为0.065和0.077。使用预测集样品对建立的最佳校正模型进行外部验证,安定剂含量预测值与参考值的平均误差为0.044%。该方法可用于双芳-3双基火药中安定剂含量的快速检测。维也里试验证明,近红外光谱法可以用于评估双芳-3双基火药安定性的好坏。Given that the disadvantages of traditional detection methods such as time-consuming and complex operation,near-infrared spectroscopy(NIRS)was used to rapidly detection the stabilizer content of SF-3 double-base propellants.Appropriate modeling band was obtained by analyzing the characteristic spectral range of stabilizer.The quantitative correction model of the stabilizer was established by partial least square method after pretreatment of the optimal spectral and determination of the optimal number of principal factors.Finally,the predictability of the developed model was evaluated by external validation.Results show that using 1100-1248 nm and 1323-1515 nm bands,when the original spectra are pretreated with standard normal variable change(SNV),the quantitative correction model with a principal factor of 7 had high prediction accuracy and stability.The determination coefficient of calibration model(R 2 C)and the determination coefficient of cross validation(R 2 CV)are 0.991 and 0.987 respectively.The corrected standard deviation(R MSEC)and cross validation standard deviation(R MSECV)are 0.065 and 0.077 respectively.The average error between the predicted value and the reference value of stabilizer content is 0.044%.This method could be used for the rapid determination of stabilizer content of SF-3 double-base propellants.It can be seen from Vieille test that NIRS can be used as a method to evaluate the stability of SF-3 double-base propellants.

关 键 词：双基火药 安定剂含量 近红外光谱法 组分模型 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] TQ562[化学工程—炸药化工]