CN116002634A - Cubic deflection structure polymeric nitrogen and preparation method and application thereof - Google Patents

Abstract

The invention relates to a cubic deflection structure polymeric nitrogen, a preparation method and application thereof. The preparation method of the cubic deflection structure polymeric nitrogen comprises the following steps: providing a diamond anvil cell; and filling glass carbon into the diamond anvil cell, cooling to below-148 ℃, continuously filling liquid nitrogen, pressurizing to above 100GPa, heating to above 2100K, and finally decompressing to normal pressure and cooling to normal temperature to obtain the cubic deflection structure polymeric nitrogen encapsulated in the diamond. The cubic deflection structure polymeric nitrogen prepared by the preparation method can be stably stored at normal temperature and normal pressure, and the storage time is long.

Description

Polymerized nitrogen with cubic deflection structure and its preparation method and application

technical field

The invention relates to the technical field of energetic materials, in particular to polynitrogen with cubic deflection structure and its preparation method and application.

Background technique

Total nitrogen compounds are promising candidates for high-energy-density materials (HEDMs) such as propellants and explosives. Among all nitrogen compounds, polymeric nitrogen, especially cubic deflected polymeric nitrogen (cg-N) has the highest energy. Theoretical calculations show that the density of cg-N is 3.9 g·cm ^-3 , the specific impulse is 500 s, and the detonation pressure is HMX ( Octo today) is more than ten times that. At present, cg-N is mainly prepared by pressurizing the diamond anvil (DAC) to 140GPa and compressing nitrogen at a high temperature of 2000K. However, cg-N obtained by this preparation method cannot be stored stably at room temperature and pressure.

Although a method of using carbon nanotubes or graphene materials for the preparation of polymeric nitrogen has appeared on the market, this method can realize the stable storage of polymeric nitrogen at normal temperature and pressure, but the operation of this preparation method is complicated, and the prepared polymeric nitrogen Nitrogen samples are nano-scale, low yield, and can be stored stably for a short time at normal temperature and pressure, that is, the lifetime is basically on the order of 1 microsecond.

It can be seen that the polymeric nitrogen obtained by traditional preparation methods, especially the cubic deflection structure polymeric nitrogen (cg-N), still has the problem of being difficult to store stably at room temperature and pressure.

Contents of the invention

Based on this, it is necessary to address the above problems and provide a cubic deflection structure polymeric nitrogen and its preparation method and application. The cubic deflection structure polymeric nitrogen obtained by the preparation method can be stored stably at normal temperature and pressure, and the storage time is long.

A method for preparing polynitrogen with a cubic deflection structure, comprising the following steps:

Provide diamond counter-anvil sample cavity;

Fill glassy carbon into the diamond counter-anvil sample cavity, cool down to below -148°C, continue to fill with liquid nitrogen, then pressurize to above 100GPa, and heat to above 2100K, finally release the pressure to normal pressure and cool to normal temperature, Cubic deflection structures aggregated nitrogen encapsulated in diamond were obtained.

In one embodiment, in the pressurizing step, pressurize to 100GPa-120GPa.

In one embodiment, in the step of lowering the temperature, the temperature is lowered to -148°C to -196°C.

In one embodiment, the filling rate of the glassy carbon is selected from 60%-80%, and the filling rate of the liquid nitrogen is selected from 20%-40%.

In one embodiment, in the step of heating, the temperature is heated to 2100K-2500K.

In one of the embodiments, the preparation method of the diamond anvil sample cavity comprises the following steps:

Prepare the diamond counter-anvil;

Pre-pressing the gasket by using the diamond anvil to form an indentation;

A hole is punched in the center of the indentation, and the hole is used as a diamond counter-anvil sample cavity.

In one of the embodiments, the diameter of the anvil surface of the diamond anvil is selected from 70 μm-90 μm;

And/or, the diameter of the hole is selected from 30 μm-50 μm.

In one of the embodiments, the thickness of the gasket is selected from 240 μm-260 μm, and the thickness of the pre-pressed gasket is selected from 10 μm-30 μm;

And/or, the material of the gasket is selected from rhenium or tungsten.

A cubic deflection structure polynitrogen prepared by the above-mentioned preparation method of cubic deflection structure polynitrogen.

An application of polynitrogen with a cubic deflection structure as described above in energetic materials.

In the present invention, the glassy carbon is firstly filled in the diamond anvil sample chamber, and then filled with liquid nitrogen, since the glassy carbon has pores, the filled liquid nitrogen will enter the pores of the glassy carbon and be mixed into the glassy carbon , so in the high temperature and high pressure environment formed by pressurization and heating treatment, liquid nitrogen and glassy carbon will simultaneously synthesize cubic deflection structure polynitrogen and diamond under high temperature and high pressure, and when glassy carbon is transformed into diamond, it will be sealed inside under high pressure The cubic deflection structure polymerized nitrogen in the state, thus obtaining the cubic deflection structure polymerized nitrogen encapsulated in diamond. Therefore, when the pressure is released to normal pressure and the temperature is lowered to normal temperature, the cubic deflection structure polymerized nitrogen encapsulated in diamond prepared by the present invention can be stored stably and for a long time.

Description of drawings

Fig. 1 is the schematic flow chart of the preparation process of the cubic deflection structure polynitrogen encapsulated in diamond provided by the present invention;

Fig. 2 is the Raman spectrogram of the cubic deflection structure polynitrogen encapsulated in diamond prepared in Example 1 of the present invention under normal temperature and pressure;

Fig. 3 is a 3D crystal structure diagram of cubic deflection structure polynitrogen prepared in Example 1 of the present invention;

Fig. 4 is the Raman spectrogram of the polynitrogen prepared by comparative example 1 of the present invention;

Fig. 5 is the Raman spectrogram of the polynitrogen prepared in comparative example 3 of the present invention;

Fig. 6 is the Raman spectrogram of the polynitrogen prepared in comparative example 5 of the present invention;

Fig. 7 is a Raman spectrum of the polynitrogen with a cubic deflection structure prepared in Example 1 of the present invention after being placed under normal temperature and pressure for one week.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described in more detail below. It should be understood, however, that the present invention may be embodied in many different forms and is not limited to the embodiments or examples described herein. On the contrary, the purpose of providing these embodiments or examples is to make the disclosure of the present invention more thorough and comprehensive.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are only for the purpose of describing specific embodiments or examples, and are not intended to limit the present invention. The optional range of the term "and/or" used herein includes any one of two or more related listed items, and also includes any and all combinations of related listed items, any and all of which Combinations include combinations of any two of the related listed items, any more of the related listed items, or all of the related listed items.

Referring to Fig. 1, Fig. 1 is a schematic flow diagram of the preparation process of polynitrogen with cubic deflection structure provided by the present invention, wherein A represents glassy carbon, B represents liquid nitrogen, C represents diamond, and D represents polynitrogen. As shown in Figure 1, liquid nitrogen and glassy carbon decompose and re-bond under high temperature (above 2100K) and high pressure (above 100GPa) conditions to obtain cubic deflection structure polynitrogen and diamond, and the cubic deflection structure polynitrogen is encapsulated in a high-pressure form in diamond.

Specifically, the preparation method of the cubic deflection structure polynitrogen provided by the present invention comprises the following steps:

S1. Provide a diamond counter-anvil sample cavity;

S2. Fill glassy carbon into the diamond counter-anvil sample cavity, cool down to below -148°C, continue to fill with liquid nitrogen, then pressurize to above 100GPa, and heat to above 2100K, finally release the pressure to normal pressure and cool to At room temperature, a cubic deflection structure polymerized nitrogen encapsulated in diamond was obtained.

Glassy carbon is a non-graphitizable carbon that combines the properties of glass and ceramics. Contrary to crystalline graphite, it is an amorphous, nearly 100% sp ² hybridized carbon material, which is composed of polymeric organic precursors, For example, phenolic resin, furfuryl alcohol resin, etc., are sintered at high temperature in an inert gas atmosphere. Because the whole body is black and the surface is smooth like glass, it is called glassy carbon. Glassy carbon can be divided into two classes, type I and type II glassy carbon. Type I glassy carbon is formed by sintering polymeric organic matter at a temperature lower than 2000 °C, and its interior is mainly composed of disordered curled graphene fragments; type II glassy carbon is sintered at a higher temperature (~2500 °C). It is a disordered three-dimensional multilayer graphene matrix formed by stacking nanoscale self-assembled fullerene-like spheroid structures. It can be seen that compared with graphene materials, glassy carbon is a disordered structure with a three-dimensional pore structure.

In the present invention, the glassy carbon has a three-dimensional pore structure, so that the liquid nitrogen filled in the sample chamber can enter the pores of the glassy carbon, that is, be mixed in the glassy carbon, and the glassy carbon will transform into diamond under high temperature and high pressure. Therefore, the glassy carbon and liquid nitrogen filled in the sample chamber will be transformed into the corresponding diamond and cubic deflection structure polynitrogen at the same time under the high temperature and high pressure environment formed by heating and pressurization, and the cubic deflection structure polynitrogen will be sealed in a high pressure state. Exists in tiny diamond chambers made of diamonds. Therefore, when the pressure is released to normal pressure and the temperature is lowered to normal temperature, the polynitrogen with cubic deflection structure encapsulated in diamond can exist stably at normal temperature and pressure for a long time.

In the traditional preparation method of polymeric nitrogen, such as: using carbon nanotubes and graphene materials to prepare polymeric nitrogen that can be stored at room temperature and pressure, the raw materials need to be dissolved first, ultrasonicated, and then transferred to carbon nanotubes Or in graphene materials, the preparation method is complicated, and the atomic weight of nitrogen transferred to carbon nanotubes or graphene materials is relatively small, and the content is nanoscale, so that the yield of polymerized nitrogen is low, and the yield is basically about 1%. ; At the same time, the storage time is shorter.

However, the method for preparing polymeric nitrogen with a cubic deflection structure of the present invention does not need to consider the transfer of raw materials. It only needs to directly fill the liquid nitrogen in the sample cavity containing glassy carbon, and the amount of liquid nitrogen and glassy carbon filled are both in micron order. , far larger than the nanoscale, and thus obtained under high temperature and high pressure in the cubic deflection structure polynitrogen encapsulated in diamond, the yield of the cubic deflection structure polynitrogen is more than 30%. Therefore, the method for preparing polynitrogen with a cubic deflection structure of the present invention is simple, easy to operate, and has a high synthesis rate.

Considering the phase inversion effect of glassy carbon and liquid nitrogen and the synthesis amount of cubic deflection structure polymerized nitrogen, in one embodiment, in step S1, the preparation method of the diamond-anvil sample cavity includes the following steps:

S11, preparing the diamond counter-anvil;

S12, using the diamond to pre-press the anvil to form an indentation;

S13. Drilling a hole in the center of the indentation, and the hole is used as a diamond counter-anvil sample cavity.

Preferably, in step S11, the diameter of the anvil surface of the diamond counter-anvil is selected from 70 μm-90 μm, further preferably, the diameter of the anvil surface of the diamond counter-anvil is selected from 80 μm. Such setting can further ensure that the diamond will generate a high pressure of more than 100GPa on the anvil.

In one embodiment, in step S12, the thickness of the gasket is selected from 240 μm-260 μm, and the thickness of the pre-pressed gasket is selected from 10 μm-30 μm. With such a setting, it can ensure that the gasket has sufficient hardness after compression, which is convenient for subsequent use.

Preferably, the gasket is made of rhenium or tungsten. Further preferably, the gasket is selected from rhenium sheets with a thickness of 250 μm and a size of 2.5 mm×2.5 mm.

In one embodiment, in step S13, a hole is formed in the center of the indentation by using an electric spark drill to form a hole as a diamond counter-anvil sample cavity, and the diameter of the hole is selected from 30 μm-50 μm. Such setting can further ensure the generation of sufficient high pressure to facilitate the subsequent transformation of liquid nitrogen and glassy carbon, and at the same time can increase the synthesis amount of polynitrogen with cubic deflection structure.

It should be noted that after the diamond anvil sample cavity is formed, it can be reset into the diamond anvil.

In the present invention, the diamond anvil sample cavity is filled with glassy carbon and liquid nitrogen. Considering the synthesis rate and packaging effect of cubic deflection structure polynitrogen, in one embodiment, the filling rate of the glassy carbon is selected from 60%- 80%, the filling rate of the liquid nitrogen is selected from 20%-40%.

It should be noted that in the preparation method of the present invention, liquid nitrogen is used not only as a raw material, but also as a pressure transmission medium, so that no pressure transmission medium is required when pressurizing.

Considering that liquid nitrogen will boil at room temperature, it is difficult to stably fill it into the diamond anvil sample cavity at room temperature, thus affecting the synthesis rate of polynitrogen with cubic deflection structure.

In one embodiment, in step S2, the temperature is lowered to -148°C to -196°C. Such setting can better ensure that the liquid nitrogen is stably filled in the sample cavity of the diamond counter-anvil, and better enters the glassy carbon. In the pores, the synthesis rate of the cubic deflection structure polymerized nitrogen is further improved.

Considering that both glassy carbon and liquid nitrogen need to undergo structural phase transition under high temperature and pressure, and the control of temperature and pressure will affect the crystal structure obtained by glassy carbon and liquid nitrogen phase inversion, in order to make glassy carbon and liquid nitrogen better Simultaneously transforming into corresponding diamond and cubic deflection structure polymerized nitrogen, in step S2, preferably pressurize to 100GPa-120GPa and heat to 2100K-2500K.

In one embodiment, in step S2, a laser is used for laser heating to above 2100K, and the laser wavelength is selected from 1060nm-1070nm. Preferably, the laser is a carbon dioxide laser. In this way, the present invention uses laser heating, which has high heating efficiency and can quickly reach a high temperature. The high temperature can promote the complete transformation of liquid nitrogen over a higher potential barrier to the cubic deflection structure polymer nitrogen of the cubic network structure, and make the cubic deflection structure polymer nitrogen crystallization Sex is better.

The present invention obtains a high-density cubic deflection structure polymerized nitrogen encapsulated in diamond that can exist stably at normal temperature and pressure through pressurization and laser heating.

At the same time, the present invention also provides a cubic deflection structure polynitrogen prepared by the above-mentioned preparation method of cubic deflection structure polynitrogen. The cubic deflection structure polynitrogen is a high molecular polymer formed by the nitrogen-nitrogen single bond between nitrogen atoms. The space group of the crystal structure of the cubic deflection structure polynitrogen is I2 ₁ 3, and its energy density is as high as 10.33KJ/ g.

In addition, the present invention also provides an application of the above-mentioned cubic deflection structure polynitrogen in energetic materials.

In one embodiment, the energetic material may be propellant, explosive, propellant, priming charge, pyrotechnic agent and the like.

Hereinafter, the polynitrogen with cubic deflection structure, its preparation method and application will be further described through the following specific examples.

It should be noted that in the specific examples involved in the present invention, HORIBA HR EVOLUTION Raman spectrometer is used to detect the obtained cubic deflection structure polynitrogen and polynitrogen encapsulated in diamond respectively, and the corresponding Raman spectrum is obtained , wherein the spectral scanning range: 100cm ^-1 -1200cm ^-1 or 100cm ^-1 -1400cm ^-1 , laser wavelength: 532nm, resolution: 1cm ^-1 .

Example 1

Use a diamond with an anvil surface of 80 μm to pre-press a rhenium sheet with a thickness of 250 μm and a size of 2.5mm×2.5mm to form an indentation. The thickness of the pre-pressed rhenium sheet is 20 μm, and then use an electric spark drill A hole with a diameter of 40 μm is formed in the center of the indentation, and the hole is used as the sample cavity of the diamond anvil; fill the sample cavity with glassy carbon, cool down to -150°C, and continue to fill the liquid nitrogen to fill the entire sample cavity. And the Raman peak of diamond is used as pressure calibration to calibrate the pressure in the sample chamber, wherein the filling rate of the glassy carbon is 60%, and the filling rate of the liquid nitrogen is 40%, and then the diamond is sealed against the top. The anvil is subjected to pressure loading, pressurized to 110GPa, and laser heated to 2100K, and finally released to normal pressure and cooled to normal temperature to obtain a cubic deflection structure polynitrogen encapsulated in diamond. The yield of aggregated nitrogen of cubic deflection structures encapsulated in diamond obtained in this example was 36%.

The cubic deflection structure polynitrogen encapsulated in diamond of this embodiment is respectively carried out Raman analysis, Fig. 2 is the Raman spectrogram of the cubic deflection structure polynitrogen encapsulated in diamond under normal temperature and pressure conditions, Fig. 3 is the embodiment 1 The 3D crystal structure diagram of the prepared cubic deflection structure polymerized nitrogen. From the Raman spectrum shown in Figure 2, the characteristic peak of cubic deflection structure polymeric nitrogen appears at 950cm ^-1 , which is in good agreement with the theoretically calculated Raman peak position of the cubic deflection structure polymeric nitrogen structure predicted by theory.

At the same time, the cubic deflection structure polynitrogen prepared in this example was analyzed. FIG. 3 is a 3D crystal structure diagram of the cubic deflection structure polynitrogen prepared in Example 1, and the lattice constant is 0.345nm.

It can be seen that, in this embodiment, polynitrogen with a cubic deflection structure encapsulated in diamond was successfully obtained under high pressure and high temperature.

Example 2

Use a diamond with an anvil surface of 80 μm to pre-press a rhenium sheet with a thickness of 250 μm and a size of 2.5mm×2.5mm to form an indentation. The thickness of the pre-pressed rhenium sheet is 25 μm, and then use an electric spark drill A hole with a diameter of 30 μm is formed in the center of the indentation, and the hole is used as the sample cavity of the diamond anvil; fill the sample cavity with glassy carbon, cool down to -180°C, and continue to fill the liquid nitrogen to fill the entire sample cavity. And the Raman peak of diamond is used as pressure calibration to calibrate the pressure in the sample chamber, wherein the filling rate of the glassy carbon is 70%, and the filling rate of the liquid nitrogen is 30%, and then the diamond is sealed against the top. The anvil is subjected to pressure loading, pressurized to 120GPa, and laser heated to 2200K, and finally released to normal pressure and cooled to normal temperature to obtain a cubic deflection structure polynitrogen encapsulated in diamond. The cubic deflection structure encapsulated in diamond yielded a 42% yield of aggregated nitrogen.

Example 3

Use a diamond with an anvil surface of 80 μm to pre-press a tungsten sheet with a thickness of 250 μm and a size of 2.5mm×2.5mm on the anvil to form indentations. The thickness of the pre-pressed tungsten sheet is 25 μm, and then use an electric spark drill A hole with a diameter of 40 μm is formed in the center of the indentation, and the hole is used as the sample cavity of the diamond anvil; fill the sample cavity with glassy carbon, cool down to -170°C, and continue to fill the liquid nitrogen to fill the entire sample cavity. And the Raman peak of diamond is used as pressure calibration to calibrate the pressure in the sample chamber, wherein the filling rate of the glassy carbon is 80%, and the filling rate of the liquid nitrogen is 20%, and then the diamond is sealed against the top. The anvil is subjected to pressure loading, pressurized to 100GPa, and laser heated to 2300K, and finally released to normal pressure and cooled to normal temperature to obtain a cubic deflection structure polynitrogen encapsulated in diamond. The cubic deflection structure encapsulated in diamond yielded 48% of aggregated nitrogen.

Example 4

Compared with Example 1, the only difference is that in Example 4, the filling rate of the glassy carbon is 50%, and the filling rate of the liquid nitrogen is 50%. The yield of polymerized nitrogen of cubic deflection structures encapsulated in diamond obtained in this example was 30%.

Example 5

Compared with Example 1, the only difference is that in Example 5, the rhenium sheet with a thickness of 240 μm and a size of 2.5mm×2.5mm is pre-pressed on the anvil by using a diamond with an anvil surface of 70 μm to form an indentation. The thickness of the pressed rhenium sheet is 20 μm, and then a hole with a diameter of 25 μm is formed in the center of the indentation by an electric spark drilling machine, and the hole is used as a sample cavity for the diamond counter-anvil. The yield of aggregated nitrogen of cubic deflection structures encapsulated in diamond obtained in this example was 36%.

Comparative example 1

Compared with Example 1, the only difference is that in Comparative Example 1, glassy carbon was filled into the sample cavity, the temperature was lowered to -130° C., and liquid nitrogen was continuously filled to fill the entire sample cavity.

The Raman spectrum of the polymerized nitrogen prepared in this comparative example is shown in FIG. 4 , and the crystal structure of the polymerized nitrogen is not a cubic deflection structure polymerized nitrogen.

Comparative example 2

Compared with Example 1, the only difference is that in Comparative Example 2, glassy carbon was filled into the sample cavity, the temperature was lowered to 0° C., and liquid nitrogen was continued to fill the entire sample cavity.

Comparative example 3

Compared with Example 1, the only difference is that in Comparative Example 3, the pressure was increased to 90GPa.

The Raman spectrum of the polymerized nitrogen prepared in this comparative example is shown in FIG. 5 , and the crystal structure of the polymerized nitrogen is not a cubic deflection structure polymerized nitrogen.

Comparative example 4

Compared with Example 2, the only difference is that in Comparative Example 4, the pressure was increased to 95GPa.

Comparative example 5

Compared with Example 1, the only difference is that in Comparative Example 5, it was heated to 2000K.

The Raman spectrum of the polymerized nitrogen prepared in this comparative example is shown in FIG. 6 , and the crystal structure of the polymerized nitrogen is not a cubic deflection structure polymerized nitrogen.

In order to better illustrate that the cubic deflection polynitrogen prepared by the preparation method of the present invention can be stored stably at normal temperature and pressure, and the storage time is long, the applicant placed the cubic deflection polynitrogen prepared in Example 1 under normal temperature and pressure for one week. , and then perform Raman analysis on it, the results are shown in Figure 7. It can be clearly seen from Fig. 7 that the cubic deflection polynitrogen prepared by the preparation method of the present invention can not only be stored stably at normal temperature and pressure, but also has a long storage time.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. a preparation method of cubic deflection structure polynitrogen, is characterized in that, comprises the following steps: Provide diamond counter-anvil sample cavity; Fill glassy carbon into the diamond counter-anvil sample chamber, then lower the temperature to below -148°C, continue to fill with liquid nitrogen, then pressurize to above 100GPa, and heat to above 2100K, finally release the pressure to normal pressure and cool to normal temperature , to obtain a cubic deflection structure polynitrogen encapsulated in diamond. 2. The method for preparing polynitrogen with a cubic deflection structure according to claim 1, characterized in that, in the step of pressurizing, pressurize to 100GPa-120GPa. 3 . The method for preparing polynitrogen with cubic deflection structure according to claim 1 , characterized in that, in the step of lowering the temperature, the temperature is lowered to -148°C to -196°C. 4. The preparation method of cubic deflection structure polynitrogen according to claim 1, characterized in that, the filling rate of the glassy carbon is selected from 60%-80%, and the filling rate of the liquid nitrogen is selected from 20%-40% %. 5. The method for preparing polynitrogen with a cubic deflection structure according to claim 1, characterized in that, in the heating step, the heating is to 2100K-2500K. 6. according to the preparation method of the cubic deflection structure polynitrogen described in any one of claim 1 to claim 5, it is characterized in that, the preparation method of described diamond anvil sample cavity, comprises the following steps: Prepare the diamond counter-anvil; Pre-pressing the gasket by using the diamond anvil to form an indentation; A hole is punched in the center of the indentation, and the hole is used as a diamond counter-anvil sample cavity. 7. the preparation method of cubic deflection structure polynitrogen according to claim 6 is characterized in that, the diameter of the anvil surface of the diamond anvil is selected from 70 μm-90 μm; And/or, the diameter of the hole is selected from 30 μm-50 μm. 8. The method for preparing polynitrogen with cubic deflection structure according to claim 6, characterized in that, the thickness of the gasket is selected from 240 μm-260 μm, and the thickness of the gasket after pre-pressing is selected from 10 μm-30 μm; And/or, the material of the gasket is selected from rhenium or tungsten. 9. A cubic deflection structure polynitrogen prepared by the preparation method of the cubic deflection structure polynitrogen according to any one of claims 1 to 8. 10. An application of the cubic deflection structure polynitrogen as claimed in claim 9 in energetic materials.

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