CN106083495B - Coated explosive microballoon that a kind of emulsion solidification is prepared and preparation method thereof - Google Patents
Coated explosive microballoon that a kind of emulsion solidification is prepared and preparation method thereof Download PDFInfo
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- CN106083495B CN106083495B CN201610438714.XA CN201610438714A CN106083495B CN 106083495 B CN106083495 B CN 106083495B CN 201610438714 A CN201610438714 A CN 201610438714A CN 106083495 B CN106083495 B CN 106083495B
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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
- C06B21/0033—Shaping the mixture
-
- 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
- C06B21/0083—Treatment of solid structures, e.g. for coating or impregnating with a modifier
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
- C06B23/009—Wetting agents, hydrophobing agents, dehydrating agents, antistatic additives, viscosity improvers, antiagglomerating agents, grinding agents and other additives for working up
Abstract
Coated explosive microballoon being prepared the invention discloses a kind of solidification of emulsion and preparation method thereof.The inventive method is as follows：First, high-molecular coating agent is dissolved in organic solvent and obtains solution, then, explosive is suspended in the solution and forms uniform oil phase, the oil phase is added in the aqueous phase containing emulsifying agent under high velocity agitation and forms spherical emulsion droplet, the organic solvent in spherical emulsion droplet is volatilized by heating, obtain the coated explosive microballoon that covering is evenly coated at explosive surface.Utilize the method for the present invention, both dispersiveness preferably spherical micron order coated explosive particle can be obtained by emulsion droplet, suspension can be infiltrated in Polymer Solution by explosive again, high-molecular coating agent is set to separate out solidification step by step on explosive surface, form clad uniformly, fine and close, it can realize while explosive high-energy level is maintained, sensitivity is greatly lowered.
Description
Technical field
The present invention relates to technical field of composite preparation, and in particular to the coated explosive that a kind of emulsion solidification is prepared
Microballoon and preparation method thereof.
Background technology
High explosive cyclotetramethylene-tetranitramine (HMX), cyclotrimethylene trinitramine (RDX), the azepine of hexanitro six different 5
Hereby alkane (CL-20) etc. is the current most commonly used single chmical compound explosive of army's weaponry practical application.However, HMX, RDX, CL-20 etc.
The impact sensitivity of single chmical compound explosive, friction sensitivity, electric spark sensitivity etc. are higher, and security performance is poor.Coated using deterrent
Technology carries out drop sense research to high explosive, it has also become one of the study hotspot in high energy material field.By high-molecular coating agent and
Other inert materials are coated on single chmical compound explosive surface, are prepared into polymer bonding explosive (PBX), be drop sense it is most effective, before
One of most wide approach of scape.
The drop sense technology that American scholar has carried out the high explosives such as a large amount of high-molecular coating agent cladding HMX, RDX, CL-20 is ground
Study carefully, achieve series of patents achievement (US6881283,2005；US6524706,2003；US6673174,2004).But
The main deficiency of the explosive cladding drop sensing method of invention is shown：The infiltration of explosive surface is inadequate, causes Surface coating degree not high enough,
Partial crystals surface is not carried out effectively coating.
The country, Li Maoguo etc. develop the method for dropping sense agent in explosive Surface coating using vacuum vapor disposing technique
(CN103342619A, 2013).However, surface and interface active force weaker between explosive material and high polymer material is limited to, this
Explosive Surface coating degree prepared by a little methods is not high, and only 60% or so, being evenly coated property is also poor, and drop sense effect is often not yet
Enough ideals.Therefore, using new technological means, strengthen the surface and interface active force of macromolecule and explosive, lift explosive Surface coating
The cladding integrity degree of agent and being evenly coated property, just turn into efficiently one of trend of drop sense.Emulsion solidification method (also referred to as emulsion-solvent
Volatility process) it is most widely used drug microcapsule preparation method, gained microcapsule coated is complete, thickness is controllable, sphericity is high,
But focus mostly in water soluble compound and oil-soluble compounds (CN103169625A, 2013；US6558698B2,
2003), and to the solid such as explosive wastewater particle of slightly solubility, the report of microencapsulation cladding is carried out even with the technology
Seldom.Lu Xiangyang etc. (modern, 2013,12 (2), 4-9) think insoluble solid be prepared into the difficulty of high-quality microcapsules compared with
Greatly, it is that not only solubility is extremely low in water because of insoluble solid, and also is difficult to find and is gone with the immiscible organic solvent of water
It is dissolved, it is difficult to be configured to uniform, stable oil-in-water (W/O) two-phase dispersion；Nevertheless, current domestic and international research aircraft
Strong interest all be present to the microencapsulation of water not soluble drug in structure.
From the point of view of existing open source information, emulsion curing technology is combined with composite material surface coating technology, is drop
One of main means of low high explosive mechanical sensitivity.The coating technology of the high explosive of high energy how is further improved, is from now on
One of direction of development.
The content of the invention
[technical problems to be solved]
Present invention aim to address above-mentioned problem of the prior art, there is provided the cladding that a kind of emulsion solidification is prepared is fried
Medicine microballoon and preparation method thereof.It this method solve existing high explosive and coat imperfect, poor safety performance technical problem.
[technical scheme]
In order to reach above-mentioned technique effect, the present invention takes following technical scheme：
A kind of emulsion solidification prepares the preparation method of coated explosive microballoon, and this method is as follows：
First, high-molecular coating agent is dissolved in organic solvent and obtains solution, then, explosive is suspended in the solution
Uniform oil phase is formed, the oil phase is added in the aqueous phase containing emulsifying agent forms spherical emulsion droplet under high velocity agitation, is led to
Crossing heating makes the organic solvent in spherical emulsion droplet volatilize, and the coated explosive that acquisition covering is evenly coated at explosive surface is micro-
Ball.
Above-mentioned emulsion solidification prepares the preparation method of coated explosive microballoon, and it comprises the following steps：
(a) preparation of explosive oleaginous suspension：High-molecular coating agent is added in organic solvent, in heating, stirring bar
The polymeric PTC materials agent solution that concentration is 1.9wt%~10wt% is dissolved under part, it is stand-by to be cooled to room temperature；Explosive is taken to be added to
It is down in the polymeric PTC materials agent solution of room temperature, stirs to form explosive oleaginous suspension, it is standby；The high-molecular coating agent
For explosive and 5wt%~20wt% of high-molecular coating agent total amount；
(b) preparation of emulsion oil-in-water：Obtained explosive oleaginous suspension is slowly dropped under stirring and contained
Have in the aqueous phase of emulsifying agent, emulsify 10min~30min, form homogeneous latex emulsion drop；
(c) solidification of emulsion：Emulsion droplet is heated to the temperature below organic solvent boiling point while stirring, treated organic molten
After agent volatilization completely, centrifugation, washing, dry, obtain coated explosive microballoon.
According to the further technical scheme of the present invention, in step a, described high-molecular coating agent is fluorubber
(F2311), fluororesin (F2314), polyurethane (Estane5703), SAN (SAN), thermoplastic polyether
Ester (TPEE), acetylbutyrylcellulose (CAB), ethylene-vinyl acetate copolymer (EVA), polyvinyl butyral resin (PVB)
In one kind.
According to the further technical scheme of the present invention, in step a, described organic solvent is ethyl acetate, acetic acid
One kind in butyl ester, dichloromethane, chloroform, acetone, butanone, N,N-dimethylformamide, ethylene carbonate.
According to the further technical scheme of the present invention, in step a, described explosive is that granularity is 1 μm~80 μm
One in cyclotetramethylene-tetranitramine (HMX), cyclotrimethylene trinitramine (RDX), Hexanitrohexaazaisowurtzitane (CL-20)
Kind.
According to the further technical scheme of the present invention, in step a, refer to heat under described heating, stirring condition
To temperature be 30 DEG C~60 DEG C, stir speed (S.S.) be 300rpm~600rpm；Described stirring refers to mechanical agitation or ultrasound
Stirring.
According to the further technical scheme of the present invention, in stepb, described emulsifying agent refers to isooctylphenol polycyclic oxygen
Ethane ether (OP) series, sorbitan fatty acid ester (SPAN) series, polyoxyethylene sorbitan fatty acid ester
(TWEEN) series, polyacrylamide (PAAm), carboxymethyl cellulose (CMC), PVP (PVP), dodecyl
One or both of benzene sulfonic acid sodium salt (SDBS), lauryl sodium sulfate (SDS), polyvinyl alcohol (PVA), gelatin；It is described containing
The aqueous phase of emulsifying agent refers to the emulsifier aqueous solution that emulsifier content is 0.5wt%~5wt%.
According to the further technical scheme of the present invention, in stepb, the explosive oleaginous suspension is with containing emulsifying agent
Aqueous phase volume ratio be 1；3~1：12；It is 900rpm~1500rpm to refer to stir speed (S.S.) under described stirring.
According to the further technical scheme of the present invention, in step c, described mixing speed 300rpm~600rpm；
The time that the organic solvent volatilization uses is 2h~5h.
A kind of coated explosive microballoon being prepared using preparation method described above.
The present invention is will be described in detail below.
According to the further technical scheme of the present invention, in step c, emulsion droplet is heated to while stirring organic molten
Temperature below agent boiling point, decompression measure can also be increased, promote the volatilization of solvent.Emulsion droplet is heated under stirring
Less than the boiling temperature of organic solvent, the organic solvent in emulsion droplet is diffused to aqueous phase and volatilized at water/Air Interface,
High-molecular coating agent separates out and is coated on explosive particle surface, forms spherical compacted coating.
Using emulsion-solvent evaporation method of the present invention, it is preferably spherical micro- both dispersiveness can to have been obtained by emulsion droplet
Meter level coated explosive particle, suspension can be infiltrated in Polymer Solution by explosive again, make high-molecular coating agent on explosive surface
Solidification is separated out step by step, is formed clad uniformly, fine and close, can be realized while explosive high-energy level is maintained, significantly
Degree reduces sensitivity.Therefore, the method that emulsion solidification of the present invention prepares spherical high explosive cladding microballoon, collects emulsion microballoon
Technology, in one, is a kind of very potential explosive cladding drop sense technological approaches, high energy is fried with composite coating technology
The practical application of medicine has great importance.
In the present invention, the granularity of explosive, high molecular species, the ratio of explosive and high-molecular coating agent, solution it is dense
The state (oil phase/water phase ratio, mixing speed and emulsification times) of emulsion droplet is to production in degree, the species of emulsifying agent, emulsion process
Quality has a great influence.From relatively fine particle of the granularity at 1 μm~80 μm, suitable explosive and high-molecular coating agent ratio, choosing
The relatively low organic solvent of boiling point, the higher mixing speed emulsification of use are selected, moderate heating-up temperature solvent flashing can be coated
The binary explosive particle to be worked well with drop sense.
[beneficial effect]
The present invention compared with prior art, has following beneficial effect：
Explosive cladding microballoon prepared by the present invention is fine particulate, and high-molecular coating agent is to high explosive HMX, RDX, CL-
20 surfaces form membranaceous even compact clad, and the mechanical sensitivity of gained explosive coating significantly reduces.The present invention is applied to
The preparation of the high explosive coating of each kind, its technological process is simple, and reaction condition is gentle, and favorable reproducibility, yield approaches
98%, suitable for batch production.
The explosive cladding microballoon that the present invention is prepared is in ten micron orders, spherical in shape, and HMX, RDX, CL-20 surface quilt
High-molecular coating agent fine and close cladding in the form of membranaceous.
The spherical explosive coated prod that the present invention obtains is carried out using the methods of characteristic drop height method GJB772A-97 601.2
Impact sensitivity tests (10kg drops hammer, 50mg samples) and friction sensitivity test (3.92MPa, 90 ° of pivot angles), the results showed that, in height
In the case of molecule cladding agent content is 5%, HMX impact sensitivities after cladding are reduced to 4%~20% by 100%, friction sensitivity
8%~50% is reduced to by 100%, drop sense significant effect.
Brief description of the drawings
Fig. 1 is the HMX explosives cladding microballoon SEM figures that the embodiment of the present invention 1 is prepared by covering of TPEE；
Fig. 2 is the HMX explosives cladding microballoon SEM figures that the embodiment of the present invention 2 is prepared by covering of SAN；
Fig. 3 is the RDX explosives cladding microballoon SEM figures that the embodiment of the present invention 3 is prepared by covering of Estane5703；
Fig. 4 is the CL-20 explosives cladding microballoon SEM figures that the embodiment of the present invention 4 is prepared by covering of TPEE.
Embodiment
With reference to embodiments of the invention, the invention will be further elaborated.
The particle diameter range of choice of explosive in following embodiments is in 1 μm~80 μ ms.
Embodiment 1：
The preparation method of microballoon is coated using TPEE as HMX explosives prepared by covering：
Step 1：Polyether ester TPEE 1.0g, dichloromethane 30g are weighed, is stirred under the conditions of 35 DEG C, 500rpm to complete
Dissolving, it is stand-by to be cooled to room temperature.HMX explosive 4.0g are weighed, are added in TPEE solution, the stirring formation oil under the conditions of 400rpm
Phase suspension.
Step 2：By the HMX explosives suspension in step 1 under 1000rpm mechanical agitation, 150g is slowly added into
In aqueous phase containing 2.0%PVA, 15min is emulsified, forms homogeneous latex emulsion drop.
Step 3：Make methylene chloride under conditions of being 300rpm in 38 DEG C, mixing speed by the emulsion in step 2
Volatilization, solvent are volatilized after 3h, and the solid product in water is centrifuged, washed, is dried, you can obtains the spherical HMX blastings charge
Cover microballoon 4.9g.
The present embodiment Product Rendering is as shown in figure 1, mechanical sensitivity test result shows that HMX is coated in the present embodiment
Afterwards, impact sensitivity 4%, friction sensitivity 8%.
Embodiment 2
The preparation method of microballoon is coated using SAN as HMX explosives prepared by covering：
Step 1：SAN SAN 1.0g are weighed, under the conditions of ethyl acetate 50g, with 50 DEG C, 250rpm
It is stand-by to be cooled to room temperature to being completely dissolved for stirring.HMX explosive 5g are weighed, is added in SAN solution, is stirred under the conditions of 450rpm
Mix to form oleaginous suspension.
Step 2：By the HMX explosives suspension in step 1 under 1200rpm mechanical agitation, 250g is slowly added into
In aqueous phase containing 1.0%PVA and 0.5%SDS, 18min is emulsified, forms homogeneous latex emulsion drop.
Step 3：Make solvent ethyl acetate under conditions of being 450rpm in 50 DEG C, mixing speed by the emulsion in step 2
Volatilization, solvent are volatilized after 4h, and the solid product in water is centrifuged, washed, is dried, you can obtains the spherical HMX blastings charge
Cover microballoon 5.9g.
The present embodiment Product Rendering is as shown in Fig. 2 mechanical sensitivity test result shows that HMX is coated in the present embodiment
Afterwards, impact sensitivity 20%, friction sensitivity 50%.
Embodiment 3
The preparation method of microballoon is coated using Estane5703 as RDX explosives prepared by covering：
Step 1：Stirring is weighed under the conditions of Estane 5703 polyurethane 2.0g, butanone 80g, with 50 DEG C, 250rpm to complete
Fully dissolved, it is stand-by to be cooled to room temperature.RDX explosive 20g are weighed, is added in Estane solution, shape is stirred under the conditions of 450rpm
Into oleaginous suspension.
Step 2：By the RDX explosives suspension in step 1 under 900rpm mechanical agitation, it is slowly added into 400g and contains
In 1.0%PVA and 1.0%SDBS aqueous phase, 12min is emulsified, forms homogeneous latex emulsion drop.
Step 3：Make solvent ethyl acetate under conditions of being 450rpm in 50 DEG C, mixing speed by the emulsion in step 2
Volatilization, solvent are volatilized after 4h, and the solid product in water is centrifuged, washed, is dried, you can obtains the spherical RDX blastings charge
Cover microballoon 21.6g.
The present embodiment Product Rendering is as shown in figure 3, mechanical sensitivity test result shows that RDX is coated in the present embodiment
Afterwards, impact sensitivity 12%, friction sensitivity 20%.
Embodiment 4
The preparation method of microballoon is coated using TPEE as CL-20 explosives prepared by covering：
Step 1：Polyether ester TPEE 1.0g, dichloromethane 50g are weighed, is stirred under the conditions of 35 DEG C, 500rpm to complete
Dissolving, it is stand-by to be cooled to room temperature.CL-20 explosive 19.0g are weighed, is added in TPEE solution, shape is stirred under the conditions of 400rpm
Into oleaginous suspension.
Step 2：By the CL-20 explosives suspension in step 1 under 1000rpm mechanical agitation, it is slowly added into
In aqueous phases of the 250g containing 2.0%PVA and 0.5%SDBS, 10min is emulsified, forms homogeneous latex emulsion drop.
Step 3：Make methylene chloride under conditions of being 500rpm in 36 DEG C, mixing speed by the emulsion in step 2
Volatilization, solvent are volatilized after 2.5h, and the solid product in water is centrifuged, washed, is dried, you can obtains spherical CL-20 and fries
Pack covers microballoon 19.8g.
The present embodiment Product Rendering is as shown in figure 4, mechanical sensitivity test result shows that HMX is coated in the present embodiment
Afterwards, impact sensitivity 16%, friction sensitivity 24%.
Embodiment 5
The preparation method of microballoon is coated using F2311 as HMX explosives prepared by covering：
Step 1：FluororubberF2311 covering 1.0g is weighed, ethyl acetate 50g, is stirred under the conditions of 50 DEG C, 450rpm
To being completely dissolved, it is stand-by to be cooled to room temperature.HMX explosive 8.0g are weighed, are added in F2311 solution, are the super of 20Hz in frequency
5min is handled under the conditions of sound, forms oleaginous suspension.
Step 2：By the HMX explosives suspension in step 1 under 1100rpm mechanical agitation, 300g is slowly added into
In aqueous phase containing 2.0%PVA and 0.5%OP-10,10min is emulsified, forms homogeneous latex emulsion drop.
Step 3：Make solvent ethyl acetate under conditions of being 500rpm in 55 DEG C, mixing speed by the emulsion in step 2
Volatilization, solvent are volatilized after 4h, and the solid product in water is centrifuged, washed, is dried, you can obtains the spherical HMX blastings charge
Cover microballoon 8.9g.
Mechanical sensitivity test result shows, after HMX is coated in the present embodiment, impact sensitivity 12%, friction sensitivity is
28%.
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, embodiments of the present invention are simultaneously not restricted to the described embodiments, it should be appreciated that people in the art
Member can be designed that a lot of other modifications and embodiment, and these modifications and embodiment will fall in principle disclosed in the present application
Within scope and spirit.
Claims (4)
1. a kind of emulsion solidification prepares the preparation method of coated explosive microballoon, it is characterised in that this method is as follows：
First, high-molecular coating agent is dissolved in organic solvent and obtains solution, then, explosive is suspended in the solution and formed
Uniform oil phase, the oil phase is added in the aqueous phase containing emulsifying agent forms spherical emulsion droplet under high velocity agitation, by adding
Heat makes the organic solvent in spherical emulsion droplet volatilize, and obtains the coated explosive microballoon that covering is evenly coated at explosive surface；
Comprise the following steps：
(a) preparation of explosive oleaginous suspension：High-molecular coating agent is added in organic solvent, under heating, stirring condition
The polymeric PTC materials agent solution that concentration is 1.9wt%~10wt% is dissolved into, it is stand-by to be cooled to room temperature；Take explosive to be added to be down to
In the polymeric PTC materials agent solution of room temperature, stir to form explosive oleaginous suspension, it is standby；The high-molecular coating agent is fried
Medicine and 5wt%~20wt% of high-molecular coating agent total amount；
(b) preparation of emulsion oil-in-water：Obtained explosive oleaginous suspension is slowly dropped under stirring containing breast
In the aqueous phase of agent, 10min~30min is emulsified, forms homogeneous latex emulsion drop；
(c) solidification of emulsion：Emulsion droplet is heated to the temperature below organic solvent boiling point while stirring, treats that organic solvent is waved
After distributing entirely, centrifugation, washing, dry, obtain coated explosive microballoon；
In step (a), described high-molecular coating agent be fluorubber, fluororesin, polyurethane, SAN,
One kind in thermoplastic polyether ester, acetylbutyrylcellulose, ethylene-vinyl acetate copolymer, polyvinyl butyral resin；
In step (a), described explosive is the cyclotetramethylene-tetranitramine that granularity is 1 μm~80 μm, the nitre of ring trimethylene three
One kind in amine, Hexanitrohexaazaisowurtzitane；
In step (a), refer to be heated under described heating, stirring condition temperature be 30 DEG C~60 DEG C, stir speed (S.S.) be
300rpm~600rpm；Described stirring refers to mechanical agitation or ultrasonic agitation；
In step (b), described emulsifying agent refers to isooctylphenol PEO ether series, sorbitan fatty acid ester system
Row, polyoxyethylene sorbitan fatty acid ester series, polyacrylamide, carboxymethyl cellulose, PVP,
Two kinds in neopelex, lauryl sodium sulfate, polyvinyl alcohol, gelatin；The aqueous phase containing emulsifying agent is
Refer to the emulsifier aqueous solution that emulsifier content is 0.5wt%~5wt%；
In step (b), the volume ratio of the explosive oleaginous suspension and the aqueous phase containing emulsifying agent is 1：3~1：12；Described
It is 900rpm~1500rpm to refer to stir speed (S.S.) under stirring.
2. emulsion solidification according to claim 1 prepares the preparation method of coated explosive microballoon, it is characterised in that in step
(a) in, described organic solvent is ethyl acetate, butyl acetate, dichloromethane, chloroform, acetone, butanone, N, N- diformazans
One kind in base formamide, ethylene carbonate.
3. emulsion solidification according to claim 1 prepares the preparation method of coated explosive microballoon, it is characterised in that in step
(c) in, described mixing speed 300rpm~600rpm；The time that the organic solvent volatilization uses is 2h~5h.
4. a kind of emulsion solidification prepares coated explosive microballoon, it is characterised in that employs described in claims 1 to 3 any one
Preparation method is prepared.
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| CN108586166B (en) * | 2018-05-04 | 2020-09-18 | 北京理工大学 | TKX-50 coating method |
| CN108640806B (en) * | 2018-08-27 | 2020-05-22 | 安徽理工大学 | Underground mining colloidal emulsion explosive and preparation method thereof |
| CN113024332B (en) * | 2020-03-03 | 2022-04-19 | 西南科技大学 | Process for the preparation of an explosive composition |
| CN111423290B (en) * | 2020-04-10 | 2021-12-21 | 西安近代化学研究所 | Overload-resistant explosive and forming process thereof |
| CN111302877B (en) * | 2020-04-13 | 2021-10-22 | 西安宇电新材料科技有限公司 | Modified HATO explosive and preparation method thereof |
| CN112457144B (en) * | 2020-12-11 | 2021-11-05 | 湖北航天化学技术研究所 | HMX explosive microsphere containing cross-linked fluoropolymer coating layer and preparation method thereof |
| CN114230425A (en) * | 2021-12-06 | 2022-03-25 | 中北大学 | F2314Coated molecular perovskite energetic material and preparation method thereof |
| CN114149295B (en) * | 2021-12-06 | 2023-02-10 | 中北大学 | Coated molecular perovskite energetic material and preparation method thereof |
| CN114634390A (en) * | 2022-03-09 | 2022-06-17 | 中国工程物理研究院化工材料研究所 | Preparation method of multi-element composite energetic microspheres |
| CN116803963B (en) * | 2023-05-26 | 2024-04-26 | 中北大学 | TATB/RDX/PSt/GO composite microsphere and preparation method thereof |
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