【摘要】 为解决传统分析方法测定单基发射药中钝感剂（樟脑）含量存在时间长、工作量大等问题,建立了一种采用近红外光谱法快速测定单基发射药中钝感剂（樟脑）组分含量的新方法;通过对比单基发射药药粒样品及钝感剂光谱图特点,确定了钝感剂组分最佳建模光谱范围为8 300⁸ 510cm^-1;并对样品光谱图进行了预处理,对比了多个不同光谱预处理方法的效果,确定出最佳光谱预处理方法是多元散射校正（MSC）+一阶导数的组合;采用偏最小二乘法建立了钝感剂的近红外模型,并对模型的预测能力进行了验证。结果表明,钝感剂的模型校正相关系数（R_c²）和验证相关系数（R_p²）分别为0.972 3和0.973 5,验证的校正标准偏差（RMSEC）和交互验证的校正标准偏差（RMSECV）分别为0.163 6和0.150 8;预测均方根误差（RMSEP）为0.182 7,验证集标准偏差与预测标准偏差的比值（RPD）为6.87;将该模型应用到单基发射药中樟脑含量的检测,可使预测值极差和标准偏差均低于0.2%,表明该方法能实现单基发射药中钝感剂组分含量的快速检测。更多还原

【Abstract】 To solve the problems of long time and heavy workload in determining the content of deterrent（camphor）in single-base gun propellants by traditional analytical methods,a new method for rapid determination of the content of insensitive agent（camphor）in single-base gun propellant by near-infrared spectroscopy was established.By comparing the spectral characteristics of the single-base gun propellant grain sample and the desensitizer,the optimal modeling spectrum range of the desensitizing agent component was determined to be in the range of 8 300-8 510cm^-1.The spectrum of the sample was preprocessed and the effect of several different spectral preprocessing methods was compared.The determined best spectral preprocessing method is a combination of multi-dimensional scattering correction（MSC）and first derivative.The near-infrared model of the desensitizing agent was established using partial least squares method,and the predictive ability of the model was verified.The results show that the model correction correlation coefficient（R_c²）and verification correlation coefficient（R_p²）of the desensitizing agent are 0.972 3and 0.973 5,respectively.The root-mean-square-error of calibration（RMSEC）and root-mean-squareerror of cross-validation（RMSECV）are 0.163 6and 0.150 8,respectively;the root-mean-square-error of prediction（RMSEP）is 0.182 7,and the ratio of the standard deviation of the validation set to the prediction standard deviation（residue prediction deviation RPD）is 6.87.Applying this method to the detection of camphor content in single-base propellant can make the predicted and standard deviations less than 0.2%,indicating that the method can realize the rapid detection of the content of the desensitizing agent component in the single-base gun propellant.更多还原