Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for identifying the eutectic structure of explosives

An identification method and crystal structure technology, applied in Raman scattering, material excitation analysis, etc., can solve the problems of weak vibration frequency of Raman spectrum and difficult distinction of Raman peaks, etc., and achieve the effect of simple operation and simple principle

Active Publication Date: 2018-03-27
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the vibration frequency of the Raman spectrum is weak, and the Raman peaks are not easy to distinguish

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for identifying the eutectic structure of explosives
  • A method for identifying the eutectic structure of explosives
  • A method for identifying the eutectic structure of explosives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] First, take the pure sample of ε-crystal form CL-20 and the pure sample of BTF and mix them in equal proportions. And the eutectic sample was prepared by using the eutectic explosive preparation method reported in the literature. Weigh 3-5mg of CL-20 pure sample and BTF pure sample respectively and stick them on the stage of Fourier Raman spectrometer, keep the surface of the samples flat, and directly conduct Raman test to obtain the Raman 2000-200cm of explosives CL-20 and BTF -1 Spectrum, and the mixed sample was subjected to Raman characterization in turn. From the Raman spectrum of the mixed sample, it can be seen that there are two characteristic Raman peaks of explosives, and the peak position does not move or split. Through analysis, it can be seen that the two There is no interaction between them.

[0037] According to the density functional theory (DFT), the structure optimization and vibration form simulation of the simple explosive CL-20 etc. were carried o...

Embodiment 2

[0047] First, take the pure sample of explosive TNT and the pure sample of ε-crystal form CL-20 and mix them in equal proportions. The total amount of each part is 0.2g, and two sets of samples are made. uniform. Weigh 3-5 mg of pure sample and stick it on the stage of Fourier Raman spectrometer, keep the surface of the sample flat, and directly conduct Raman test to obtain the Raman 2000-200cm of explosives CL-20 and TNT -1 Spectrum, and the mixed sample was subjected to Raman characterization in turn. The mixed sample can be seen to have two characteristic Raman peaks of explosives, and the peak position does not move or split. Through analysis, it can be seen that there is no interaction between the two .

[0048] According to the density functional theory (DFT), the structural optimization and vibration form simulation of the simple explosive TNT etc. are carried out, and the molecular configuration is constructed through GaussView 5.0 as follows Figure 5 shown by Fig...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for identifying the eutectic structure of explosives. Firstly, the Raman spectra of eutectic explosive samples and single-substance explosive samples are measured to obtain corresponding fingerprint characteristic peaks; Theoretically calculate the vibration frequencies of explosive molecules, then identify the characteristic peaks of the fingerprints of explosive molecules, and assign their vibration modes; finally, compare the Raman spectra of the eutectic explosive samples with the two simple explosive samples. The vibrational peak shift of the characteristic peak of the fingerprint of a simple explosive sample is used to assign the vibration mode of the eutectic explosive sample, and the reason for the formation of the eutectic structure is analyzed through the Raman characteristic shift. In the present invention, the rapid analysis and identification of the explosive eutectic is carried out by utilizing the inconsistency of the Raman spectra of the eutectic formed by the single explosive, the simple mixture of the single explosive in pairs, and the co-crystal formed by the reaction of the single explosive in pairs, resulting in different Raman peak position changes.

Description

technical field [0001] Embodiments of the present invention relate to the field of energetic materials, and more specifically, embodiments of the present invention relate to a method for identifying the eutectic structure of explosives. Background technique [0002] In the field of energetic materials, researchers have been working on developing explosives with high energy, low sensitivity and low cost. At present, there are two main approaches to the development of high-energy insensitive explosives: the development of new single-substance explosives, and the modification of existing explosive formulations. Since it is difficult to make breakthroughs in the research and development of new single-substance explosives in a short period of time, and the process of modifying explosive formulations will also involve problems such as uneven mixing and different thermal expansion coefficients, these two methods have many problems in actual research. ,Slow progress. Therefore, st...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/65
Inventor 何璇王慧杨宗伟李洪珍陈东罗毅威王蔺
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com