CN110066210A - A kind of hud typed nanometer metallic silver and explosive compound preparation method - Google Patents
A kind of hud typed nanometer metallic silver and explosive compound preparation method Download PDFInfo
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- CN110066210A CN110066210A CN201910339480.7A CN201910339480A CN110066210A CN 110066210 A CN110066210 A CN 110066210A CN 201910339480 A CN201910339480 A CN 201910339480A CN 110066210 A CN110066210 A CN 110066210A
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0008—Compounding the ingredient
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
- C06B33/08—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide with a nitrated organic compound
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
- C06B33/08—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide with a nitrated organic compound
- C06B33/10—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide with a nitrated organic compound the compound being an aromatic
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- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of hud typed nanometer metallic silvers and explosive compound preparation method, comprising: and the stirring of dopamine-Tris aqueous solution (1) is added in explosive powder, is filtered, deionized water washing, vacuum drying；(2) silver nitrate solution is prepared, ammonium hydroxide is added and adjusts, is made into silver ammino solution, surfactant is added thereto；(3) it will be added in the mixing suspension that step (2) obtains after explosive powder that step (1) obtains in water ultrasonic disperse；(4) formalin is added to the solution of step (3) when shaking up, mixing suspension is put into certain temperature water-bath, shake mix again is stood after a certain period of time, is filtered, vacuum drying to get arrive hud typed nanometer metallic silver and explosive compound.The present invention coats upper poly-dopamine layer on explosive powder surface in advance, promotes silver in dopamine surface uniform deposition, it is ensured that silver particles are all deposited on explosive surface, do not assemble individually, do not fall off after cladding.
Description
Technical field
The present invention relates to a kind of preparation methods of explosive, and in particular to a kind of hud typed nanometer metallic silver and explosive are compound
Object preparation method belongs to composite material containing energy field.
Background technique
High-energy energetic material is propellant and the target that explosive field is persistently pursued.By be added in the compound containing energy
The catalysis materials such as metal, metal oxide are to improve the exergonic effective means of energetic material.Currently, have Al, Mg, B, W,
The various metals such as Zr, Ni, Cu, Fe, Ag, Co, In, Pt and Pb3O4、CuO、Fe2O3Equal metal oxides contain energy for improving
Releasing for material can (Progress in Energy and Combustion Science, 2016,57,75-136).For example,
Ting An etc. is prepared for Cu2O-Bi2O3/ GO nanocatalyst finds that it has catalytic effect to RDX-CMDB propellant
(Propellants Explos.Pyrotech.2018,43,1087–1095).In the compound of nanocatalyst and energetic material
Object preparation aspect, the prior art mainly use the methods of solid phase reaction, electrolysis, hydro-thermal reaction, precipitating, hydrolysis, sol-gel method
Nanocatalyst is prepared, compound be prepared into of nanocatalyst and energetic material is then contained into energy compound again.However, nano material
It itself is easy to reunite, nano metal is different from energetic material surface polarity itself in addition, and dispersibility is bad in recombination process, causes
The complex catalysts efficiency of combustion containing energy is not high.It, can be very if nano metal and the crystal containing energy are assembled into coreshell type structure
Good solving the problems, such as is dispersed in the compound containing energy, effectively improves nano metal to the catalytic efficiency of energetic material.At present still
Have no the report of core-shell type nano metal Yu energetic material preparation method.
Summary of the invention
It is an object of the invention to disperse for existing nano metal and nano metal in the compound containing energy and energetic material
Non-uniform problem provides a kind of hud typed nanometer metallic silver and explosive compound preparation method.Existed by silver ion solution
The reduction of the crystal in-stiu coating containing energy, forms perfect coreshell type structure.
The purpose of the present invention is achieved through the following technical solutions:
A kind of hud typed nanometer metallic silver and explosive compound preparation method, include the following steps:
(1) it is stirred in the dopamine-Tris aqueous solution for being about 8.5 by explosive powder addition pH with 300rpm~500rpm rate
After mixing a period of time, filters, adopt and be washed with deionized 5 times, be dried in vacuo 8~12 hours under the conditions of 60 DEG C；
(2) certain density silver nitrate solution is prepared, ammonium hydroxide is added and adjusts, is made into silver ammino solution, 1~2 is added thereto
Drip surfactant；
(3) step (2) will be added to after explosive powder that step (1) obtains in water ultrasonic disperse 0.5min~2.0min
In obtained mixing suspension；
(4) formalin is added to the solution of step (3) when shaking up, mixing suspension is put into certain temperature water-bath
In, shake mix again after 2min~10min is stood, is filtered, vacuum drying 8 hours~12 hours under the conditions of 40 DEG C~50 DEG C
Afterwards, hud typed nanometer metallic silver and explosive compound can be obtained.
Further scheme is:
The explosive powder is water-insoluble explosive, including octogen (HMX), 1- oxygen-diamino -3,5- dinitro
Pyrazine (LLM-105), 1,1- diamino -2,2- dinitro ethylene explosive (FOX-7), six azepine isoamyl of hexanitro hereby alkane (CL-
20) and 1,3,5- triamidos -1,3,5- trinitrobenzen (TATB), the partial size of explosive powder are 5 μm~100 μm.
Further scheme is:
The raw material of dopamine is dopamine hydrochloride in step (1), the concentration of dopamine-Tris aqueous solution be 2g/L~
The mass ratio of 5g/L, explosive powder and dopamine is 4~10, and stirring rate is 300rpm~500rpm, and mixing time is 0.5 small
When~1 hour.
Further scheme is:
Silver ammino solution is the mixed solution of silver nitrate and ammonium hydroxide in step (2), the concentration of silver nitrate be 0.1mol/L~
0.5mol/L, the surfactant are polyvinylpyrrolidone (PVP), alkyl phenol polyoxyethylene ether (OP-10) and polyoxy second
One of alkene Span 20 (Tween-20), the mass ratio of surfactant and explosive be (1:500)~
(1:200).
Further scheme is:
The frequency of ultrasonic disperse is 25KHz~40KHz in step (3).
Further scheme is:
The molal quantity of step (4) formaldehyde is that the ratio of silver ion molal quantity is 3~8, and the concentration of formalin is 20wt%, water
Bath temperature is 70 DEG C~75 DEG C, in the hud typed nanometer metallic silver and explosive compound silver-colored mass fraction be 2%~
10%.
Reaction principle of the invention is described as follows below:
The purpose of step (1) is control poly-dopamine capsulation condition, so that closely uniformly coating on explosive powder surface
A small amount of poly-dopamine.The covering amount of poly-dopamine is positively correlated with solution concentration, cladding time, and the concentration of solution is higher or wraps
Cover that the time is longer, the covering amount of poly-dopamine is higher；On the other hand, solution concentration, cladding time and mixing speed also will affect
Cladding tightness degree of the poly-dopamine on explosive surface.For example, solution concentration is too low, poly-dopamine is inadequate in explosive surface cladding
Uniformly；Solution concentration is too high, and poly-dopamine is individually reunited, and coats not close.Mixing time is too long, poly-dopamine covering amount mistake
Greatly, it is too thick to will lead to the non-shell containing energy in explosive surface, is unfavorable for metallic silver in the compound containing energy and energy is released to the catalysis of explosive.Cause
This, the capsulation condition optimized in step (1) is that the concentration of aqueous dopamine solution is 2g/L~5g/L, explosive powder and dopamine
Mass ratio be 200~500, stirring rate be 300rpm~500rpm, mixing time be 0.5 hour~1 hour.
The purpose of step (2) is configuration silver ammino solution.Ammonium hydroxide is added dropwise dropwise, forms yellow mercury oxide before this, and then solution becomes
At brown precipitate, stop that ammonium hydroxide is added dropwise when then solution becomes as clear as crystal.
Formaldehyde is added dropwise in step (4) to be formed uniformly on explosive powder surface to make silver ion reduction at metallic silver
Metallic silver shell, and guarantee surface reduction deposition metallic silver do not fall off, need to control formaldehyde dripping quantity and reaction
Temperature.
The present invention is using the principle of silver mirror reaction by silver ion reduction at metallic silver.The present invention is in advance on explosive powder surface
Poly-dopamine layer in cladding promotes silver in dopamine surface uniform deposition, passes through the control of preparation condition, it is ensured that silver particles are whole
It is deposited on explosive surface, is not assembled individually, is not fallen off after cladding, it is multiple to form closely hud typed nanometer metallic silver and explosive
Close object.
Detailed description of the invention
Fig. 1 is (100 μm of stereoscan photograph of the hud typed nanometer metallic silver and explosive compound of 1 gained of embodiment
Grade)；
Fig. 2 is the stereoscan photograph (200nm of the hud typed nanometer metallic silver and explosive compound of 1 gained of embodiment
Grade)；
Fig. 3 is the hud typed nanometer metallic silver and explosive compound SEM photograph that embodiment 6 obtains；
Fig. 4 is the compound SEM photograph that embodiment 7 obtains.
Specific embodiment
The present invention is further illustrated in the following with reference to the drawings and specific embodiments.
Embodiment 1
A kind of hud typed nanometer metallic silver and explosive compound preparation method, include the following steps:
(1) the HMX explosive powder that 10g average grain diameter is 100 μm is added in 500mL dopamine-Tris aqueous solution
(2g/L, pH are about 8.5), after 500rpm rate stirring 0.5 hour, to filter, adopt and be washed with deionized 5 times, in 60 DEG C of items
It is dried in vacuo 8 hours under part；
(2) 20mL silver nitrate solution (concentration 0.1mol/L) is prepared, ammonium hydroxide is added and adjusts, is made into silver ammino solution, Xiang Qi
Middle addition 0.02g polyvinylpyrrolidone (PVP)；
(3) by HMX explosive powder that step (1) obtains in 20mL water to be added to step after 25KHz ultrasonic disperse 1min
Suddenly in the mixing suspension that (2) obtain；
(4) formalin that 2g mass concentration is 20% is added to the solution of step (3) when shaking up, by mixing suspension
It is put into 70 DEG C of water-baths, stands shake mix again after 10min, filter, under the conditions of 50 DEG C after vacuum drying 8 hours
Obtain hud typed nanometer metallic silver and explosive compound.Silver-colored mass fraction is 2% in compound.Attached drawing 1 and attached drawing 2 are institutes
Obtain the stereoscan photograph of hud typed nanometer metallic silver and explosive compound.As can be seen that silver particles are evenly distributed on explosive
Particle surface, the partial size of silver particles are about 30nm.
Embodiment 2
A kind of hud typed nanometer metallic silver and explosive compound preparation method, include the following steps:
(1) the HMX explosive powder that 10g average grain diameter is 50 μm is added to (5g/ in 500mL dopamine-Tris aqueous solution
L, pH are about 8.5), after 400rpm rate stirring 0.5 hour, to filter, adopt and be washed with deionized 5 times, under the conditions of 60 DEG C
Vacuum drying 8 hours；
(2) 20mL silver nitrate solution (concentration 0.25mol/L) is prepared, ammonium hydroxide is added and adjusts, is made into silver ammino solution, Xiang Qi
Middle addition 0.03g polyoxyethylene sorbitan monolaurate (Tween-20)；
(3) by HMX explosive powder that step (1) obtains in 10mL water to be added to step after 25KHz ultrasonic disperse 2min
Suddenly in the mixing suspension that (2) obtain；
(4) formalin that 4g mass concentration is 20% is added to the solution of step (3) when shaking up, by mixing suspension
It is put into 72 DEG C of water-baths, shake mix, suction filtration under the conditions of 50 DEG C after vacuum drying 8 hours, can obtain again after standing 8min
To hud typed nanometer metallic silver and explosive compound.Silver-colored mass fraction is 4% in compound.
Embodiment 3
A kind of hud typed nanometer metallic silver and explosive compound preparation method, include the following steps:
(1) the CL-20 explosive powder that 10g average grain diameter is 70 μm is added in 500mL dopamine-Tris aqueous solution
(2g/L, pH are about 8.5), after 400rpm rate stirring 1 hour, to filter, adopt and be washed with deionized 5 times, in 60 DEG C of conditions
Lower vacuum drying 8 hours；
(2) 20mL silver nitrate solution (concentration 0.5mol/L) is prepared, ammonium hydroxide is added and adjusts, is made into silver ammino solution, Xiang Qi
Middle addition 0.02g alkyl phenol polyoxyethylene ether (OP-10)；
(3) by CL-20 explosive powder that step (1) obtains in 20mL water to be added after 25KHz ultrasonic disperse 0.5min
In the mixing suspension obtained to step (2)；
(4) formalin that 12g mass concentration is 20% is added to the solution of step (3) when shaking up, by mix suspending
Liquid is put into 75 DEG C of water-baths, stands shake mix again after 2min, is filtered, under the conditions of 40 DEG C after vacuum drying 8 hours
Obtain hud typed nanometer metallic silver and explosive compound.Silver-colored mass fraction is 5% in compound.
Embodiment 4
A kind of hud typed nanometer metallic silver and explosive compound preparation method, include the following steps:
(1) the LLM-105 explosive powder that 10g average grain diameter is 60 μm is added in 500mL dopamine-Tris aqueous solution
(2g/L, pH are about 8.5), after 500rpm rate stirring 1 hour, to filter, adopt and be washed with deionized 5 times, in 60 DEG C of conditions
Lower vacuum drying 8 hours；
(2) 30mL silver nitrate solution (concentration 0.1mol/L) is prepared, ammonium hydroxide is added and adjusts, is made into silver ammino solution, Xiang Qi
Middle addition 0.02g polyvinylpyrrolidone (PVP)；
(3) the LLM-105 explosive powder for obtaining step (1) is in 20mL water to add after 40KHz ultrasonic disperse 0.5min
Enter in the mixing suspension obtained to step (2)；
(4) formalin that 3g mass concentration is 20% is added to the solution of step (3) when shaking up, by mixing suspension
It is put into 70 DEG C of water-baths, shake mix, suction filtration under the conditions of 40 DEG C after vacuum drying 8 hours, can obtain again after standing 5min
To hud typed nanometer metallic silver and explosive compound.Silver-colored mass fraction is 3% in compound.
Embodiment 5
A kind of hud typed nanometer metallic silver and explosive compound preparation method, include the following steps:
(1) the FOX-7 explosive powder that 10g average grain diameter is 30 μm is added in 500mL dopamine-Tris aqueous solution
(4g/L, pH are about 8.5), after 400rpm rate stirring 1 hour, to filter, adopt and be washed with deionized 5 times, in 60 DEG C of conditions
Lower vacuum drying 8 hours；
(2) 20mL silver nitrate solution (concentration 0.2mol/L) is prepared, ammonium hydroxide is added and adjusts, is made into silver ammino solution, Xiang Qi
Middle addition 0.04g polyvinylpyrrolidone (PVP)；
(3) by FOX-7 explosive powder that step (1) obtains in 20mL water to be added to after 40KHz ultrasonic disperse 2min
In the mixing suspension that step (2) obtains；
(4) formalin that 2g mass concentration is 20% is added to the solution of step (3) when shaking up, by mixing suspension
It is put into 70 DEG C of water-baths, shake mix, suction filtration under the conditions of 40 DEG C after vacuum drying 8 hours, can obtain again after standing 3min
To hud typed nanometer metallic silver and explosive compound.Silver-colored mass fraction is 4% in compound.
Embodiment 6
A kind of hud typed nanometer metallic silver and explosive compound preparation method, include the following steps:
(1) the TATB explosive powder that 10g average grain diameter is 5 μm is added to (4g/ in 500mL dopamine-Tris aqueous solution
L, pH are about 8.5), after 400rpm rate stirring 1 hour, to filter, adopt and be washed with deionized 5 times, true under the conditions of 60 DEG C
Sky is 8 hours dry；
(2) 20mL silver nitrate solution (concentration 0.5mol/L) is prepared, ammonium hydroxide is added and adjusts, is made into silver ammino solution, Xiang Qi
Middle addition 0.05g polyvinylpyrrolidone (PVP)；
(3) by TATB explosive powder that step (1) obtains in 20mL water to be added to step after 40KHz ultrasonic disperse 2min
Suddenly in the mixing suspension that (2) obtain；
(4) formalin that 10g mass concentration is 20% is added to the solution of step (3) when shaking up, by mix suspending
Liquid is put into 75 DEG C of water-baths, stands shake mix again after 5min, is filtered, under the conditions of 50 DEG C after vacuum drying 8 hours
Obtain hud typed nanometer metallic silver and explosive compound.Silver-colored mass fraction is 10% in compound.
Attached drawing 3 is the hud typed nanometer metallic silver and explosive compound SEM photograph obtained.
Embodiment 7
The present embodiment is the comparative example of embodiment 6, is uniformly received with illustrating that formaldehyde additional amount forms explosive powder surface
The influence of rice metallic silver shell.If the control of formaldehyde amount is bad, it will lead to surface metal silver layer and fall off.Specific step is as follows:
(1) the TATB explosive powder that 10g average grain diameter is 5 μm is added to (4g/ in 500mL dopamine-Tris aqueous solution
L, pH are about 8.5), after 400rpm rate stirring 1 hour, to filter, adopt and be washed with deionized 5 times, true under the conditions of 60 DEG C
Sky is 8 hours dry；
(2) 20mL silver nitrate solution (concentration 0.5mol/L) is prepared, ammonium hydroxide is added and adjusts, is made into silver ammino solution, Xiang Qi
Middle addition 0.05g polyvinylpyrrolidone (PVP)；
(3) by TATB explosive powder that step (1) obtains in 20mL water to be added to step after 40KHz ultrasonic disperse 2min
Suddenly in the mixing suspension that (2) obtain；
(4) formalin that 20g mass concentration is 20% is added to the solution of step (3) when shaking up, by mix suspending
Liquid is put into 75 DEG C of water-baths, stands shake mix again after 5min, is filtered, under the conditions of 50 DEG C after vacuum drying 8 hours
Obtain compound.
Attached drawing 4 is the compound SEM photograph obtained.Exposed explosive crystal and empty metallic silver shell as we can see from the figure
Layer illustrates that in the case where a large amount of formaldehyde acts on, metallic silver shell falls off from explosive crystal surface, is unfavorable for forming hud typed nanometer
Metallic silver and explosive compound.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiment of the present invention are not limited by the above embodiments, it should be appreciated that those skilled in the art
Member can be designed that a lot of other modification and implementations, these modifications and implementations will fall in principle disclosed in the present application
Within scope and spirit.
Claims (6)
1. a kind of hud typed nanometer metallic silver and explosive compound preparation method, it is characterised in that include the following steps:
(1) with 300rpm~500rpm rate stirring one in the dopamine-Tris aqueous solution for being about 8.5 by explosive powder addition pH
After the section time, filters, adopt and be washed with deionized 5 times, be dried in vacuo 8~12 hours under the conditions of 60 DEG C；
(2) certain density silver nitrate solution is prepared, ammonium hydroxide is added and adjusts, is made into silver ammino solution, surface-active is added thereto
Agent；
(3) step (2) will be added to after explosive powder that step (1) obtains in water ultrasonic disperse 0.5min~2.0min to obtain
Mixing suspension in；
(4) formalin is added to the solution of step (3) when shaking up, mixing suspension is put into certain temperature water-bath, it is quiet
Shake mix again is set after 2~10min, filters, under the conditions of 40 DEG C~50 DEG C after vacuum drying 8 hours~12 hours, can obtain
To hud typed nanometer metallic silver and explosive compound.
2. hud typed nanometer metallic silver and explosive compound preparation method according to claim 1, it is characterised in that:
The explosive powder is water-insoluble explosive, including octogen, 1- oxygen-diamino -3,5- dinitro pyrazine, 1,1-
Diamino -2,2- dinitro ethylene explosive, six azepine isoamyl of hexanitro hereby alkane and 1,3,5- triamidos -1,3,5- trinitrobenzen,
The partial size of explosive powder is 5 μm~100 μm.
3. hud typed nanometer metallic silver according to claim 1 or claim 2 and explosive compound preparation method, it is characterised in that:
The raw material of dopamine is dopamine hydrochloride in step (1), and the concentration of dopamine-Tris aqueous solution is 2g/L~5g/L,
The mass ratio of explosive powder and dopamine is 4~10, and stirring rate is 300rpm~500rpm, and mixing time is 0.5 hour~1
Hour.
4. hud typed nanometer metallic silver according to claim 1 or claim 2 and explosive compound preparation method, it is characterised in that:
Silver ammino solution is the mixed solution of silver nitrate and ammonium hydroxide in step (2), and the concentration of silver nitrate is 0.1mol/L~0.5mol/
L, the surfactant are polyvinylpyrrolidone, alkyl phenol polyoxyethylene ether and polyoxyethylene sorbitan mono laurate
One of ester, the mass ratio of the surfactant and explosive that are added in silver ammino solution are 1:(200~500).
5. hud typed nanometer metallic silver according to claim 1 or claim 2 and explosive compound preparation method, it is characterised in that:
The frequency of ultrasonic disperse is 25KHz~40KHz in step (3).
6. hud typed nanometer metallic silver according to claim 1 or claim 2 and explosive compound preparation method, it is characterised in that:
The molal quantity of step (4) formaldehyde is that the ratio of silver ion molal quantity is 3~8, and the concentration of formalin is 20wt%, water-bath temperature
Degree is 70 DEG C~75 DEG C, and silver-colored mass fraction is 2%~10% in the hud typed nanometer metallic silver and explosive compound.
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Cited By (5)
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| CN112299936A (en) * | 2020-11-06 | 2021-02-02 | 西南科技大学 | Preparation method and application of photo-thermal material for explosive laser detonation |
| CN113620759A (en) * | 2021-07-16 | 2021-11-09 | 西北工业大学 | Composite solid propellant based on multi-scale modified nitramine oxidant and preparation method thereof |
| CN113979819A (en) * | 2021-11-29 | 2022-01-28 | 西南科技大学 | Preparation method of high-energy composite structure explosive |
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| CN110981670A (en) * | 2019-11-15 | 2020-04-10 | 上海航天化工应用研究所 | Solid propellant containing core-shell modified oxidant and preparation method thereof |
| CN110981670B (en) * | 2019-11-15 | 2021-12-07 | 上海航天化工应用研究所 | Solid propellant containing core-shell modified oxidant and preparation method thereof |
| CN112299936A (en) * | 2020-11-06 | 2021-02-02 | 西南科技大学 | Preparation method and application of photo-thermal material for explosive laser detonation |
| CN113620759A (en) * | 2021-07-16 | 2021-11-09 | 西北工业大学 | Composite solid propellant based on multi-scale modified nitramine oxidant and preparation method thereof |
| CN113620759B (en) * | 2021-07-16 | 2022-06-07 | 西北工业大学 | Composite solid propellant based on multi-scale modified nitramine oxidant and preparation method thereof |
| CN113979819A (en) * | 2021-11-29 | 2022-01-28 | 西南科技大学 | Preparation method of high-energy composite structure explosive |
| CN113979819B (en) * | 2021-11-29 | 2022-12-06 | 西南科技大学 | Preparation method of high-energy composite structure explosive |
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