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New method for quantitatively recognizing mixed explosive components by combining infrared spectroscopy and chemometrics

A technique of chemometrics and infrared spectroscopy, applied in the new field of infrared spectroscopy combined with chemometrics to qualitatively identify the components of mixed explosives, can solve the problems of identification of components of mixed explosives that have not been applied to PBX, and achieve fast detection speed, simple and accurate pretreatment high degree of effect

Inactive Publication Date: 2016-02-03
SICHUAN UNIV
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Problems solved by technology

However, at present, the multi-label method has not been applied to the component identification of PBX explosive mixtures.

Method used

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  • New method for quantitatively recognizing mixed explosive components by combining infrared spectroscopy and chemometrics
  • New method for quantitatively recognizing mixed explosive components by combining infrared spectroscopy and chemometrics

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[0021] specific implementation plan

[0022] Chemometrics combined with multi-label strategy assisted infrared spectroscopy of the present invention can identify multiple components of HMX, RDX, TATB and TNT in PBX explosives, and is suitable for FT-IR infrared spectrometers of various models and manufacturers. The instruments used in this example are: Nicolet5700 Fourier transform infrared spectrometer. Test temperature: room temperature;

[0023] 1) Configure and collect PBX explosive samples, adopt the triangular mixture design strategy, prepare and collect 146 PBX explosive samples with different concentrations, including single-component samples, two-component mixed samples and three-component mixed samples. Among them, 118 samples of the training set and 28 samples of the independent test set were prepared. In addition, 5 real samples were prepared according to the real explosive ratio; the explosive samples were mixed with potassium bromide (KBr) at a ratio of 1:10 wit...

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Abstract

The invention discloses a new multi-label algorithm analysis method combining infrared spectroscopy and chemometrics. Four components of (octogen (HMX), hexogen(RDX), triamino trinitrobenzene (TATB) and trinitrotoluene (TNT)) in plastic bonded explosives (PBX) can be fast and quantitatively recognized at the same time, and measurable samples comprise single-component, double-component and three-component PBX. The method includes the following main steps that PBX samples in different concentrations are prepared, wherein 118 training sets exist, 28 independent testing sets exist, four kinds of explosives in the training sets are recognized through a support vector machine to be subjected to modeling and optimization, an optimal model is applied to the training sets and five true samples, and whether unknown mixed explosives contain HMX, RDX, TATB and TNT or not can be directly predicted. Compared with a traditional experimental method, no pre-separation needs to be performed on PBX, only the sample infrared spectrum needs to be measured, operation is easy, analysis speed is high, and accuracy is high.

Description

technical field [0001] The invention belongs to the technical field of rapid non-destructive detection of explosives, and relates to the simultaneous qualitative identification of infrared spectra of components in mixed explosives. Specifically, a method combining infrared spectroscopy and chemometrics (multi-label algorithm) is established A new analytical method that can achieve rapid and accurate analysis of components (HMX, RDX, TATB and TNT) in PBX explosives (including one-component, two-component and three-component PBX explosives) without any pre-separation of the sample. Simultaneously identify and predict the category of explosives. Background technique [0002] Polymer bonded explosives (Polymer bonded explosives, PBX) is a high-filling composite material, generally composed of one to three high-energy explosive materials as the main part and one of the mass percentages in the range of 5-10% or Composed of a variety of polymer materials, such as Octokin (HMX), RD...

Claims

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Application Information

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IPC IPC(8): G01N21/3563
Inventor 蒲雪梅王敏琦何璇徐涛文志宁李梦龙
Owner SICHUAN UNIV
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