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In-situ analysis method of HNIW crystal form crystal transformation rate in propellant powder

An in-situ analysis and propellant technology, applied in the field of explosives, can solve the problem of in-situ analysis of HNIW crystal forms, and achieve the effect of low detection limit and high efficiency

Pending Publication Date: 2020-12-11
XIAN MODERN CHEM RES INST
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Problems solved by technology

[0007] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an in-situ analysis method for the HNIW crystal transformation rate in the propellant, so as to solve the problem that in-situ analysis cannot be performed on the micron-scale HNIW crystal form in the prior art. technical problem

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  • In-situ analysis method of HNIW crystal form crystal transformation rate in propellant powder
  • In-situ analysis method of HNIW crystal form crystal transformation rate in propellant powder
  • In-situ analysis method of HNIW crystal form crystal transformation rate in propellant powder

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Embodiment 1

[0059] This embodiment provides an in-situ analysis method for the HNIW crystal transformation rate in the propellant, the method includes the following steps:

[0060] Step 1. Sample slices are placed on slides:

[0061] The material in the high-energy propellant process is loose white solid powder, which can be directly spread on the glass slide, flattened with a blade, and tested at 20 test points;

[0062] The formed high-energy propellant is in the shape of a white rod, which is radially sliced ​​to test the inside; the rod-shaped propellant is directly fixed on a glass slide with double-sided tape to test the outside, and 20 HNIW crystal test points are tested on the inside and outside.

[0063] Step 2. Determine the crystal region under the optical microscope:

[0064] Under an optical microscope, first focus under a 10x magnifying glass and use the knob on the optical platform to move the platform up, down, left, and right to determine the crystal position, and gradua...

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Abstract

The invention provides an in-situ analysis method of HNIW crystal form crystal transformation rate in propellant powder, which comprises the following steps: step 1, placing a sample slice on a glassslide, step 2, determining a crystal area under an optical microscope, step 3, carrying out in-situ test on a crystal by microscopic Raman to obtain an HNIW Raman spectrogram, and step 4, performing standard crystal Raman data acquistion and crystal form identification, and counting the crystal transformation rate; 401, acquiring a standard Raman spectrogram of the standard crystal: preparing a standard epsilon HNIW crystal, a standard alpha HNIW crystal and a standard gamma HNIW crystal, placing the standard crystal under a microscope, and testing a Raman spectrum to obtain a crystal form standard Raman spectrogram; step 402, performing crystal form identification; and step 403, performing crystal transformation rate statistics. The method is high in efficiency, low in detection limit, accurate, reliable and feasible.

Description

technical field [0001] The invention belongs to the field of explosives and relates to hexanitrohexaazaisowurtzitane, in particular to an in-situ analysis method for the HNIW crystal transformation rate in propellants. Background technique [0002] Containing HNIW high-energy propellant Due to the addition of hexanitrohexaazaisowurtzitane (HNIW, CL-20), the energy of this type of high-energy propellant has been greatly improved. HNIW is a polymorphic compound, and only the ε form is better in fluidity and safety. The ε-type is the initial feeding crystal form. Due to the loading of the solvent, moisture, components and temperature in the process, there may be mutual conversion between ε, γ, and α crystal forms. The optimal crystal form of ε-HNIW is used as the high-energy propellant Raw material input, the mechanism of possible crystal transformation: (1) ε-HNIW crystal transformation to γ ​​crystal form at high temperature, such as: ε-HNIW crystal transformation occurs at ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65G01N1/28
CPCG01N21/65G01N1/286
Inventor 陈智群刘国权栾洁玉徐敏康莹刘可赵娟王民昌张皋常海苏鹏飞
Owner XIAN MODERN CHEM RES INST
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