Non-molecular polymeric phase material and preparation method thereof

A molecular, reciprocating rotation technology, applied in the field of non-molecular polymeric phase materials and their preparation, can solve the problems of unstable configuration, incomplete conversion of non-molecular polymerization, etc., and achieve the effects of low cost, low synthesis pressure and simple process

Inactive Publication Date: 2021-04-16
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

α-phase sodium azide, N 3 - ions perpendicular to Na + The planar orientation of the atoms and the presence of weak interactions with each other make this configuration unstable, and the application of a pressure of a few hundred bars at room temperature r...

Method used

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  • Non-molecular polymeric phase material and preparation method thereof
  • Non-molecular polymeric phase material and preparation method thereof
  • Non-molecular polymeric phase material and preparation method thereof

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preparation example Construction

[0019] The invention provides a method for preparing a non-molecular polymeric phase material, comprising the following steps:

[0020] Put the sodium azide powder in the pressurizing device, after pressurizing to 49.6-51GPa, take 45-90° as a rotation cycle, carry out reciprocating rotation, apply shear stress, and stop when the total angle of reciprocating rotation is ≥405° Spin to obtain a non-molecular polymeric phase material.

[0021] In the present invention, unless otherwise specified, the required preparation materials or devices are commercially available products well known to those skilled in the art.

[0022] In the present invention, the pressurizing device is preferably an unbalanced load static high-pressure press; the present invention has no special limitation on the unbalanced load static high-pressure press, and the corresponding device well known in the art is sufficient, specifically a diamond pair Anvil press, the anvil face of the diamond-to-anvil press...

Embodiment 1

[0029] Use a diamond with an anvil surface of 200 μm to pre-press the rhenium sheet, and drill a circular hole with a diameter of 66 μm in the center of the indentation. The circular hole is used as a sample cavity for loading raw materials, and the excess sodium azide powder is filled Install it into the sample chamber, add two ruby ​​balls with a diameter of 3 μm as the pressure standard, do not add any other medium as the pressure transmission medium, and pressurize at a rate of 4GPa / min. When the pressure is increased to 49.6GPa, the Rotate at a rate of 45° in 10s, 45° is a rotation period, and rotate 405° to obtain a non-molecular polymeric phase material.

[0030] Raman scattering test is carried out to the non-molecular polymeric phase material prepared in this embodiment, the results are shown in figure 1 ;Depend on figure 1 It can be seen that the stretching vibration v1 of azide ion disappears, and the decomposition of sodium azide disappears. At 790cm -1 、1153.18c...

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Abstract

The invention provides a non-molecular polymeric phase material and a preparation method thereof, and belongs to the technical field of nitrogen-rich materials. The preparation method of the non-molecular polymeric phase material comprises the following steps: placing sodium azide powder in a pressurizing device, pressurizing to 49.6-51GPa, performing reciprocating rotation by taking 45-90 degrees as a rotation period, applying shear stress, and stopping rotation when the total angle of the reciprocating rotation is greater than or equal to 405 degrees, thereby obtaining the non-molecular polymeric phase material. Sodium azide powder is used as a raw material, a non-molecular polymer phase is synthesized by utilizing high pressure and shear stress generated by reciprocating rotation at normal temperature, and a pure non-molecular polymer phase material can be obtained; according to the method, other impurities do not need to be introduced in the preparation process, the synthesis pressure is low, the process is simple, the cost is low, environment pollution is avoided, and safety and reliability are achieved.

Description

technical field [0001] The invention relates to the technical field of nitrogen-rich materials, in particular to a non-molecular polymer phase material and a preparation method thereof. Background technique [0002] Numerous theoretical studies have predicted that nitrogen-rich compounds are potential high energy density materials (high energy density material, HEDM). Since the theoretical possibility of synthesizing polymeric nitrogen structures with different morphologies was obtained, the search for new polymeric nitrogen structures by various experimental techniques has received extensive attention. However, due to the harsh synthesis conditions of these polymeric nitrogens, only three polymeric nitrogen structures (three-dimensional network polymeric nitrogen cubic gauche structure (cg-N), layered polymeric nitrogen layered polymeric structure (LP-N) and hexagonal layered polymeric nitrogen hexagonallayered polymeric structure (HLP-N)). Metal-doped nitrogen-rich compo...

Claims

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Application Information

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IPC IPC(8): C01B21/08
Inventor 焦璐刘冰冰王鹏刘然刘波郭琳琳
Owner JILIN UNIV
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