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Rapid determination method of moisture content in HMX (cyclotetramethylenete-tranitramine) explosive

A technology of measurement method and detection method, applied in measurement devices, analysis materials, material analysis by optical means, etc., can solve the problems of cumbersome operation of detection methods, reduce sample variability, poor sample stability, etc., and achieve a wide range of predictions, Good prediction effect and non-destructive testing effect

Inactive Publication Date: 2017-06-20
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a rapid detection method for the moisture content of HMX explosives, which is used for the rapid, non-destructive and accurate detection of the moisture content in HMX explosives, and solves the problems of cumbersome operation, time-consuming and labor-consuming of the existing detection methods
The water in the HMX sample is easy to evaporate during the test process, resulting in poor sample stability and large error in the results. The sample is sealed in a plastic bag, and multiple copies of the same sample are scanned by near-infrared spectroscopy to obtain the average spectrum to reduce sample variability.

Method used

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  • Rapid determination method of moisture content in HMX (cyclotetramethylenete-tranitramine) explosive
  • Rapid determination method of moisture content in HMX (cyclotetramethylenete-tranitramine) explosive
  • Rapid determination method of moisture content in HMX (cyclotetramethylenete-tranitramine) explosive

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Experimental program
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Effect test

Embodiment 1

[0042] 1 Sample preparation

[0043] 134 HMX samples with different moisture content were prepared for building the whole data set. Each sample was placed in a uniform plastic packaging bag, and the whole experiment was carried out at room temperature 20±2°C.

[0044] 2 Determination of moisture content by chemical method

[0045] According to the national military standard "GJB772A-1997 Explosive Test Method", the chemical method-drying method is used to determine the moisture of the sample; the measured value is the content value (g) in 10 grams of the sample. The measurement results are shown in Table 3.

[0046] After sorting according to the moisture measurement value, 2 / 3 of the total samples (a total of 89 samples) were evenly selected as the calibration set, and the remaining 1 / 3 was used as the prediction set to ensure that the concentration distribution of the prediction set was uniform and the range did not exceed the calibration set.

[0047] The moisture conten...

Embodiment 2

[0058] 1 Sample preparation

[0059] 134 HMX samples with different moisture content were prepared for building the whole data set. Each sample was placed in a uniform plastic packaging bag, and the whole experiment was carried out at room temperature 20±2°C.

[0060] 2 Determination of moisture content by chemical method

[0061] According to the national military standard "GJB772A-1997 Explosive Test Method", the chemical method-drying method is used to determine the moisture of the sample; the measured value is the content value (g) in 10 grams of the sample. The measurement results are shown in Table 4.

[0062] After sorting according to the moisture measurement value, 2 / 3 of the total samples (a total of 89 samples) were evenly selected as the calibration set, and the remaining 1 / 3 was used as the prediction set to ensure that the concentration distribution of the prediction set was uniform and the range did not exceed the calibration set.

[0063] The moisture conten...

Embodiment 3

[0074] 1 Sample preparation

[0075] 134 HMX samples with different moisture content were prepared for building the whole data set. Each sample was placed in a uniform plastic packaging bag, and the whole experiment was carried out at room temperature 20±2°C.

[0076] 2 Determination of moisture content by chemical method

[0077] According to the national military standard "GJB772A-1997 Explosive Test Method", the chemical method-drying method is used to determine the moisture of the sample; the measured value is the content value (g) in 10 grams of the sample. The measurement results are shown in Table 5.

[0078] After sorting according to the moisture measurement value, 2 / 3 of the total samples (a total of 89 samples) were evenly selected as the calibration set, and the remaining 1 / 3 was used as the prediction set to ensure that the concentration distribution of the prediction set was uniform and the range did not exceed the calibration set.

[0079] The moisture conten...

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Abstract

The invention discloses a rapid determination method of moisture content in HMX (cyclotetramethylenete-tranitramine) explosive. The rapid determination method comprises the following steps: preparing HMX explosive samples with different moisture content and determining the moisture content; collecting near infrared spectrums of the HMX explosive samples; pre-processing spectrum data and establishing a correction model by adopting a partial least squares (PLS) method; collecting a near infrared spectrum of a sample to be detected and calculating through the correction model to obtain the moisture content of the sample to be detected. The method disclosed by the invention has the advantages that 1) the prepared sample is sealed by adopting a plastic bag in a sample preparation process aiming at overcoming the difficulties that the moisture in the HMX samples is easy to evaporate in a testing process, the stability of the samples is poor and result errors are great; 2) the plurality of same samples are subjected to near infrared spectrum scanning to obtain an average spectrum, so as to reduce the difference of the samples; 3) characteristic wave bands are selected by adopting a correlation coefficient method to carry out modeling. An established PLC regression model has high reliability and a good predication effect, and rapid, accurate and non-destructive inspection of the moisture content in the HMX explosive can be realized.

Description

technical field [0001] The invention relates to the field of component detection of HMX explosives, in particular to a rapid detection method for the moisture content of HMX explosives. Background technique [0002] The traditional chemical analysis method formed in the explosives industry in the 1980s has high accuracy in analyzing constant components, but the analysis period is long and human error is large. For complex systems, new formulas and new characteristic products with more components and less content cannot Measure accurately. The existing propellant and explosive physical and chemical performance analysis and test methods cannot meet the needs of new parameter testing and evaluation for the new propellant and explosive complex system. This situation has endangered the development of new propellant and explosive products; However, due to the backward testing methods, it is difficult for a large number of analytical instruments and equipment invested in technical...

Claims

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Application Information

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IPC IPC(8): G01N21/359G01N21/3554G01N21/3563
CPCG01N21/359G01N21/3554G01N21/3563
Inventor 刘志伟董小虎严蕊王婧娜胡岚刘红妮温晓燕陈曼
Owner XIAN MODERN CHEM RES INST
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