近红外光谱法快速测试改性双基推进剂组分的均匀性  

Rapid Test of Modified Double-base Propellant Component Uniformity by NIR Spectroscopy

作　　者：程士超 蔺向阳[1] 李燕[1] 菅桂星 

机构地区：[1]南京理工大学化工学院,江苏南京210094 [2]山西北方兴安化学工业有限公司,山西太原030008

出　　处：《含能材料》2016年第4期343-347,共5页Chinese Journal of Energetic Materials

基　　金：基础产品创新计划火炸药科研专项;江苏高校优势学科建设工程资助项目(PAPD)

摘　　要：为了建立改性双基推进剂组分混合均匀性快速定量测试的方法,采用近红外光谱仪对系列双基吸收药样品进行了测试,并对各组分的含量及分散均匀性进行了定量分析。首先,在样品测试基础上建立了组分硝化棉(NC)、硝化甘油(NG)、黑索今(RDX)、水的定量校正模型,各组分模型相关系数均大于0.98,内部预测验证的各组分绝对误差平均值小于2%;然后,连续采集混合过程中样品的光谱,用建好的模型对样品组分含量进行预测,预测结果与实际值的绝对误差小于2%。用各组分含量的变异系数(CV)法和样品原始光谱移动窗口标准差(MBSD)法对样品的混合均匀性进行了分析,各组分的CV值均小于1.5%,MBSD值在0.001以下,两种评价指标都在2.5 min以后达到稳定状态,表明样品各组分分布已经均匀。结果表明,用近红外光谱法测试改性双基推进剂的组分均匀性是可行的。To establish a rapid quantitative test method of blending uniformity of modified double-base propellant components, a near infrared （NIR） spectrometer was adopted to test the double-base absorbed sample and to quantitatively analyze the contents of each component and their dispersion uniformity. Firstly, based on sample testing, the quantitative calibration models of the components ： nitrocellulose（ NC）, nitroglycerine（ NG）, cyclotrimethylenetrinitramine（RDX） and water were established and the correlation coefficients of each component model are more than 0.98, and the mean values of components＇ absolute errors ob- tained by internal validation are less than 2%. Then NIR spectra of samples in the blending process were continually collected. The component contents of sample were predicted by the established models. The absolute errors of the predicted results and the actual values are less than 2%. The blending uniformity of sample was analyzed by coefficient of variation （CV） method for the contents of each component and and moving block standard deviation （MBSD） method for the original spectra of samples. The CV values of each component are less than 1.5%, while A4BSD value of the sample is less than 0. 001. Two kinds of evaluation indexes have reached steady state after 2.5 min, indicating that sample components had uniform distribution. Results show that it is feasible to use near infrared （NIR） spectroscopy to test the blending uniformity of modified double-base propellant components.

关 键 词：材料检测与分析技术 近红外 改性双基推进剂 吸收药 

分 类 号：V51[航空宇航科学与技术—航空宇航推进理论与工程]