CN105924324B - The non-aqueous kneading prilling process of fuel-rich metallic explosive - Google Patents
The non-aqueous kneading prilling process of fuel-rich metallic explosive Download PDFInfo
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- CN105924324B CN105924324B CN201610261343.2A CN201610261343A CN105924324B CN 105924324 B CN105924324 B CN 105924324B CN 201610261343 A CN201610261343 A CN 201610261343A CN 105924324 B CN105924324 B CN 105924324B
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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
- C06B21/0066—Shaping the mixture by granulation, e.g. flaking
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of non-aqueous kneading prilling process of fuel-rich metallic explosive, comprise the following steps：It is by mass percentage 50~65%, 30~40%, 5~10% mixing by explosive, metal powder and swelling class binding agent, solvent is added in mixed process makes mix wetting, then being mediated in kneader makes swelling class binding agent fully infiltrate explosive and metal powder, after material be sufficiently mixed uniformly and solid phase particles bond it is agglomerating after, decompression or heating evaporation solvent by kneader, little particle is kneaded into kneader simultaneously, finally material is dried, obtains fuel-rich metallic explosive.Quantity of solvent used in the method for the present invention is small, and technological process is simple, is adapted to batch to mass produce, and is advantageous to the technology and in industry amplifies and promote rapidly.
Description
Technical field
The invention belongs to energetic material field, and in particular to a kind of non-aqueous kneading granulation side of fuel-rich metallic explosive
Method, there is preferable application prospect in the modeling powder preparation field of pressed explosives.
Background technology
Fuel-rich metallic explosive is a kind of special explosive for introducing high heating value metal powder in explosive and being formed, by it
The features such as high quick-fried heat, detonation reaction zone increase, after-burning effect, it can be widely applied to penetration, bore the warheads such as ground, underwater ordnance dress
Medicine, it is the emphasis direction for efficiently injuring ammunition technology research and application.
In terms of technology of preparing, generally use two technology paths of casting type and press fitting type both at home and abroad, wherein press fitting type with
It was granulated mode and mediated with extrusion molding, water suspension method, wet method as the emphasis of Developing the characteristics of high solids content and high-power
Based on technique.These methods have obtained different degrees of application, realize the manufacturing ability of certain scale, but these
There is also some unsafe factors to need improve and perfect for technique.Explosive bears Strong shear power and brought in extrusion molding prilling
Higher security risk, metal directly contacts with water in water suspension method technique causes production process dangerous, and wet method mediate by
In being brought using a large amount of organic solvents, the cost of raw material is high, solvent recovery process is complicated, unwanted volatile causes professional wound
The problems such as evil.Therefore, it is necessary to according to the characteristic of fuel-rich metallic explosive, a kind of preparation technology side being adapted therewith of exploitation
Method, this is significant for improving production efficiency, improvement working environment, raising process safety and product quality.
The content of the invention
It is an object of the invention to provide a kind of non-aqueous kneading prilling process of fuel-rich metallic explosive.
In order to reach above-mentioned technique effect, the present invention takes following technical scheme：
A kind of non-aqueous kneading prilling process of fuel-rich metallic explosive, comprises the following steps：
Explosive, metal powder and swelling class binding agent are mixed for 50~65%, 30~40%, 5~10% by mass percentage
Close, solvent is added in mixed process makes mix wetting, and then being mediated in kneader makes swelling class binding agent by explosive and gold
Category powder fully infiltrates, after material be sufficiently mixed uniformly and solid phase particles bond it is agglomerating after, steamed by the decompression of kneader or heating
Solvent is sent out, while little particle is kneaded into kneader, finally material is dried, obtains fuel-rich metallic explosive.
Further technical scheme is that described explosive is one kind in RDX, HMX, TATB, and described metal powder is aluminium
Powder, magnesium powder, boron powder etc. or its alloyed powder, described swelling class binding agent is polyvinyl butyral resin, and solvent is absolute ethyl alcohol.
Further technical scheme is that described explosive, metal powder and swelling class binding agent are fed intake using segmentation, first
Feed intake to be swelled class binding agent, second batch feeds intake as explosive, and the 3rd batch feeds intake as aluminium powder.
Further technical scheme is that first feeds intake after 4~6min of kneading under 5~8r/min of rotating speed rotating speed；The
Two batches feed intake after 4~6min of kneading under 5~8r/min of rotating speed rotating speed；3rd batch feed intake after mediate 3~6 sections, first paragraph in
4~6min of kneading under 5~8r/min of rotating speed rotating speed, remaining the every section kneading 10 under 10~15r/min of rotating speed rotating speed~
15min。
Further technical scheme is to add to account for explosive, metal powder and swelling class binding agent gross mass 1 when second batch feeds intake
~2% solvent；3rd batch feed intake first paragraph when add plus account for explosive, metal powder and swelling class binding agent gross mass 5~10%
Solvent, the 3rd batch feed intake after remaining every section add and account for explosive, metal powder and swelling class binding agent gross mass 1~2%
Solvent.
Further technical scheme is, described drying is to dry at least 20h at 40~50 DEG C of temperature.
Further technical scheme is the mode that described kneading inverts using blade.
Explanation that the present invention will be further explained below.
It is for some explosive molding powder molding modes for being swelled class bonding agents that non-aqueous kneading, which is granulated, takes full advantage of such
The characteristic of bonding agent volumetric expansion in a solvent, significantly increases bonding agent volume by adding appropriate solvent, improves itself and explosive
Contact between particle, so as to improve cladding and adhesive effect of the bonding agent to blasting explosive granules, finally by the mode vacuumized
Plus solvent is removed, obtains explosive molding powder.
Step of the present invention is as follows：By explosive, metal powder and swelling class binding agent by mass percentage for 50~65%, 30~
40%th, 5~10% mixing, addition solvent makes mix wetting in mixed process, and then being mediated in kneader glues swelling class
Knot agent explosive and metal powder are fully infiltrated, after material be sufficiently mixed uniformly and solid phase particles bond it is agglomerating after, pass through kneader
Decompression or heating evaporation solvent, while little particle is kneaded into kneader, finally material is dried, obtains fuel-rich
Metallic explosive modeling powder.
In the method for the invention, explosive, metal powder and swelling class bonding agent are sufficiently mixed, it is only necessary to ensure mixing
The process safety in stage, mode and parameter to mixing do not have strict limitation.Solvent is added in mixed process makes thing
Material wetting, so that swelling class binder swells, significantly increase bonding agent volume, improve its contact between blasting explosive granules,
So as to improve cladding and adhesive effect of the bonding agent to blasting explosive granules.
The method of the present invention is applied to all types of solid phase explosives, such as RDX, HMX, TATB.
According to a particular embodiment of the invention, described swelling class binding agent is polyvinyl butyral resin, and solvent is anhydrous
Ethanol.
Following technological means is for making swelling class binding agent and explosive and metal powder covered effect more preferable.Explosive,
Metal powder and swelling class binding agent use fed batch, and first feeds intake to be swelled class binding agent, feeds intake after 5~8r/ of rotating speed
4~6min is mediated under min rotating speed；Second batch feeds intake as explosive, while adds that to account for explosive, metal powder and swelling class binding agent total
The solvent of quality 1~2%, 4~6min is then mediated under 5~8r/min of rotating speed rotating speed；3rd batch feeds intake as metal powder, and
Three batches feed intake after mediate 3~6 sections, first paragraph mediates 4~6min under 5~8r/min of rotating speed rotating speed, remaining every section in turn
Mediate 10~15min under 10~15r/min of speed rotating speed, the 3rd batch feed intake first paragraph when add plus account for explosive, metal powder and molten
The solvent of swollen class binding agent gross mass 5~10%, the 3rd batch feed intake after remaining every section depending on material humidity situation add account for
The solvent of explosive, metal powder and swelling class binding agent gross mass 1~2%.
In the method for the invention, the mode inverted using blade is mediated, blade reversion can be realized mixed
Material is broken into small agglomerate under the effect of blade Strong shear, until forming little particle, realizes the granulating in situ of modeling powder.
The present invention compared with prior art, has following beneficial effect：
Quantity of solvent used in the method for the present invention is small, and technological process is simple, is adapted to batch to mass produce, is advantageous to
The technology is in industry amplified and promoted rapidly；The present invention realizes the cladding of metal powder and explosive from polyvinyl butyral resin
And bonding, the fuel-rich metallic explosive modeling powder that particle diameter is less than 12 mesh can be directly obtained after kneader mixing.
Brief description of the drawings
Fig. 1 is the SEM figures of fuel-rich metallic explosive moulding powder particles prepared by embodiment 1；
Fig. 2 is the SEM figures of the bonding interface situation of fuel-rich metallic explosive modeling powder prepared by embodiment 1.
Embodiment
With reference to embodiments of the invention, the invention will be further elaborated.
Embodiment 1：
RDX171g, aluminium powder 105g, polyvinyl butyral resin 24g are weighed, raw material amounts to 300g.
Polyvinyl butyral resin is put into 1L kneaders, 5min is mediated under rotating speed 8r/min rotating speed；Then put into
RDX, while the absolute ethyl alcohol for accounting for material quality 1% (3g) is added, mediate 5min under rotating speed 8r/min rotating speed；Then put into
Aluminium powder, 5 sections are mediated altogether, the absolute ethyl alcohol for accounting for material quality 6% (18g) is added during first paragraph, under rotating speed 8r/min rotating speed
5min is mediated, at remaining 4 sections of every section of shutdown cleaning kneader blade and dead angle and addition accounts for the anhydrous of material quality 1% (3g)
Ethanol, 10min is mediated under rotating speed 10r/min rotating speed.Decide whether that opening kneader vacuumizes depending on material humidity situation
And open the time that kneader vacuumizes.Material is in fine particle or reunion large grained during discharging, using 12 eye mesh screen mistakes
Sieve, more than 48h is dried at 45 DEG C, obtains the good fuel-rich metallic explosive of free-running property.
Embodiment 2：
RDX100g, aluminium powder 80g, polyvinyl butyral resin 20g are weighed, raw material amounts to 200g.
Polyvinyl butyral resin is put into 1L kneaders, 5min is mediated under rotating speed 8r/min rotating speed；Then put into
RDX, while the absolute ethyl alcohol for accounting for material quality 2% (4g) is added, mediate 5min under rotating speed 8r/min rotating speed；Then put into
Aluminium powder, 4 sections are mediated altogether, the absolute ethyl alcohol for accounting for material quality 10% (20g) is added during first paragraph, under rotating speed 8r/min rotating speed
5min is mediated, at remaining 3 sections of every section of shutdown cleaning kneader blade and dead angle and addition accounts for the anhydrous of material quality 1% (2g)
Ethanol, 10min is mediated under rotating speed 10r/min rotating speed.Decide whether that opening kneader vacuumizes depending on material humidity situation
And open the time that kneader vacuumizes.Material is in fine particle or reunion large grained during discharging, using 12 eye mesh screen mistakes
Sieve, more than 48h is dried at 45 DEG C, obtains the good fuel-rich metallic explosive of free-running property.
Embodiment 3：
RDX954g, aluminium powder 466g, polyvinyl butyral resin 80g are weighed, raw material amounts to 1500g.
Polyvinyl butyral resin is put into 5L kneaders, 5min is mediated under rotating speed 8r/min rotating speed；Then put into
RDX, while the absolute ethyl alcohol for accounting for material quality 1% (15g) is added, mediate 5min under rotating speed 8r/min rotating speed；Then throw
Enter aluminium powder, mediate 3 sections altogether, the absolute ethyl alcohol for accounting for material quality 6% (90g) is added during first paragraph, in rotating speed 8r/min rotating speed
Lower kneading 5min, remaining 3 sections of every section of shutdown, which is cleared up at kneader blades and dead angle and added, accounts for material quality 1% (15g)
Absolute ethyl alcohol, 10min is mediated under rotating speed 10r/min rotating speed.Decide whether that opening kneader takes out depending on material humidity situation
The time that vacuum and unlatching kneader vacuumize.Material is in fine particle or reunion large grained during discharging, using 12 mesh sieves
Net sieving, more than 48h is dried at 45 DEG C, obtains the good fuel-rich metallic explosive of free-running property.
Embodiment 4：
HMX 275g, magnesium powder 200g, polyvinyl butyral resin 25g are weighed, raw material amounts to 500g.
Polyvinyl butyral resin is put into 5L kneaders, 5min is mediated under rotating speed 8r/min rotating speed；Then put into
HMX, while the absolute ethyl alcohol for accounting for material quality 1% (5g) is added, mediate 5min under rotating speed 8r/min rotating speed；Then put into
Magnesium powder, 3 sections are mediated altogether, the absolute ethyl alcohol for accounting for material quality 6% (30g) is added during first paragraph, under rotating speed 8r/min rotating speed
5min is mediated, at remaining 3 sections of every section of shutdown cleaning kneader blade and dead angle and addition accounts for the anhydrous of material quality 1% (5g)
Ethanol, 10min is mediated under rotating speed 10r/min rotating speed.Decide whether that opening kneader vacuumizes depending on material humidity situation
And open the time that kneader vacuumizes.Material is in fine particle or reunion large grained during discharging, using 12 eye mesh screen mistakes
Sieve, more than 48h is dried at 45 DEG C, obtains the good fuel-rich metallic explosive of free-running property.
Embodiment 5：
Weigh TABA 150g, boron powder 120g, polyvinyl butyral resin 30g, raw material amount to 300g.
Polyvinyl butyral resin is put into 1L kneaders, 5min is mediated under rotating speed 8r/min rotating speed；Then put into
TABA, while the absolute ethyl alcohol for accounting for material quality 1% (3g) is added, mediate 5min under rotating speed 8r/min rotating speed；Then throw
Enter boron powder, mediate 3 sections altogether, the absolute ethyl alcohol for accounting for material quality 6% (18g) is added during first paragraph, in rotating speed 8r/min rotating speed
Lower kneading 5min, remaining 3 sections every section is shut down at cleaning kneader blade and dead angle and adds the nothing for accounting for material quality 1% (3g)
Water-ethanol, 10min is mediated under rotating speed 10r/min rotating speed.Decide whether that opening kneader takes out very depending on material humidity situation
The time that empty and unlatching kneader vacuumizes.Material is in fine particle or reunion large grained during discharging, using 12 eye mesh screens
Sieving, more than 48h is dried at 45 DEG C, obtains the good fuel-rich metallic explosive of free-running property.
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 (1)
1. the non-aqueous kneading prilling process of a kind of fuel-rich metallic explosive, it is characterised in that comprise the following steps：
It is by mass percentage 50~65%, 30~40%, 5~10% mixing, institute by explosive, metal powder and swelling class binding agent
The swelling class binding agent stated is polyvinyl butyral resin, and solvent is added in mixed process makes mix wetting, then in kneader
Middle kneading makes swelling class binding agent fully infiltrate explosive and metal powder, treats that material is sufficiently mixed uniformly and solid phase particles are bonded to
After group, decompression or heating evaporation solvent by kneader, while little particle is kneaded into kneader, finally material is carried out
Dry, obtain fuel-rich metallic explosive；
Described explosive is one kind in RDX, HMX, TATB, and described metal powder is aluminium powder, magnesium powder, boron powder or its alloyed powder,
Solvent is absolute ethyl alcohol；
Described explosive, metal powder and swelling class binding agent are fed intake using segmentation, and first feeds intake to be swelled class binding agent, and second
Batch feed intake as explosive, the 3rd batch feeds intake as metal powder；
First feeds intake after 4~6min of kneading under 5~8r/min of rotating speed rotating speed；Second batch feeds intake after 5~8r/ of rotating speed
4~6min is mediated under min rotating speed；3rd batch feed intake after mediate 3~6 sections, first paragraph is pinched under 5~8r/min of rotating speed rotating speed
4~6min is closed, remaining every section is mediated 10~15min under 10~15r/min of rotating speed rotating speed；
The solvent for accounting for explosive, metal powder and swelling class binding agent gross mass 1~2% is added when second batch feeds intake；3rd batch feeds intake
Add plus account for the solvent of explosive, metal powder and swelling class binding agent gross mass 5~10% during first paragraph, the 3rd batch feed intake after its
Remaining every section adds the solvent for accounting for explosive, metal powder and swelling class binding agent gross mass 1~2%；
Described drying is that at least 20h is dried at 40~50 DEG C of temperature；
The mode that described kneading inverts using blade.
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| CN110343026A (en) * | 2019-07-18 | 2019-10-18 | 中国工程物理研究院化工材料研究所 | A kind of low cost high security PBX and preparation method thereof |
| CN110240531A (en) * | 2019-07-18 | 2019-09-17 | 中国工程物理研究院化工材料研究所 | Low sense aluminum composition of a kind of high energy and preparation method thereof |
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