CN109467494A - A kind of casting solidification PBX explosive and preparation method thereof - Google Patents
A kind of casting solidification PBX explosive and preparation method thereof Download PDFInfo
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- CN109467494A CN109467494A CN201811522834.3A CN201811522834A CN109467494A CN 109467494 A CN109467494 A CN 109467494A CN 201811522834 A CN201811522834 A CN 201811522834A CN 109467494 A CN109467494 A CN 109467494A
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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
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0033—Shaping the mixture
- C06B21/0058—Shaping the mixture by casting a curable composition, e.g. of the plastisol type
Abstract
The invention discloses a kind of casting to solidify PBX explosive, the component including following mass percentage: the mixture of main explosive and metal powder: 90%~91%；Binder: 3%~4%；Plasticizer: 4%~5%；Curing agent: 0.4%~0.6%；Deterrent: 0.5%~1%；Process auxiliaries: 0.1%~0.3%.The invention also discloses the preparation methods that a kind of casting solidifies PBX explosive.The present invention passes through optimization adhesive composition, tertiary granule gradation design and the comprehensive methods such as adding technology auxiliary agent, the closely knit molding of explosive can be realized without vibration using conventional vacuum casting, it is good to prepare Explosive Technology performance, mechanical property, thermostability, without permeability defect, explosive detonation characteristic is excellent to have both preferable Low vulnerability, there is good application prospect in the warhead charge of larger size and labyrinth.
Description
Technical field
The invention belongs to energetic material fields, and in particular to a kind of casting solidification PBX explosive and preparation method thereof.
Background technique
With modern war to high-performance, insensitiveness, Low vulnerability weapon growth requirement, with PBX (polymerbonded
Explosive it) comes into being for the New Explosives of representative, it is bullet that this kind of explosive, which has good processability and anti-load-carrying ability,
Medicine realizes the important channel of high energy, Low vulnerability.For a long time, the west military power headed by the U.S., develops and largely pours
Curing type PBX explosive, such as PBXN109, PBXW114, PBXW121, KS22a, DLE-C050 explosive are infused, and as research and newly
Equip the main charge of weapon.
The composition of the explosives such as analysis PBXN-109, PBXN-110, DLE-C050 is it is found that external cast PBX explosive solid phase contains
Amount is universal lower, and highest DLE-C050 explosive solid concentration is 89%, thus energy advantage does not protrude.The country is also with height
Can, low vulnerability explosive be application target, Efforts To Develop cast PBX Explosive development, the cast PBX explosive of document report development
Solid content is up to 90%, but medicine slurry initial viscosity is higher, needs to assist styrene solvent or apply vibration just pour
Injection forming increases the complexity and uncertainty of process.
Cast PBX explosive is a kind of using thermosetting polymer polymer as matrix, the filling of energetic material component particles height
Composite material, when solid packing content improves, the processing performance of explosive deteriorates, and explosive medicine slurry needs to have good flowing
Levelability, otherwise often occurs the defects of stomata, crackle inside explosive when moulding by casting, at the same highly filled PBX explosive due to
Binder content is few, plasticizer loading is more, and explosive mechanical property is poor, it is also possible to phenomena such as migration of plasticizer, exudation, pole occurs
The earth affects the stability in explosive use and storage process.Therefore, under the premise of guaranteeing that energy meets, casting is improved
The technique and mechanical property of PBX explosive are imperative.
Summary of the invention
To solve the above-mentioned problems in the prior art, the present invention provides a kind of casting to solidify PBX explosive, by right
The reasonable selection and optimization design of explosive formulation component can be realized highest solid without vibration using conventional vacuum casting and contained
The closely knit molding of PBX explosive of amount 91%, Explosive Technology performance, mechanical property, thermostability are good, no permeability defect, and explosive is quick-fried
Hong function admirable has both preferable Low vulnerability.
The present invention relates to following technical solutions:
A kind of casting solidification PBX explosive, the component including following mass percentage:
The mixture of main explosive and metal powder: 90%~91%；Binder: 3%~4%；Plasticizer: 4%~5%；Gu
Agent: 0.4%~0.6%；Deterrent: 0.5%~1%；Process auxiliaries: 0.1%~0.3%；
Wherein, the main explosive is octogen, and content is 70%~76%, and the metal powder is aluminium powder, content
It is 15%~20%.
Further, the octogen carries out carse, medium and small three-level grain size distribution, and particle diameter distribution is as follows: particle size range
Account for the 45%~60% of the octogen quality for the coarse granule of 0.220mm~0.450mm, particle size range be 0.100mm~
The middle particle of 0.200mm accounts for the 20%~35% of the octogen quality, and partial size≤0.040mm fine grained accounts for the Losec
Hold in the palm the 15%~25% of golden amount.
Further, the particle size range of the aluminium powder is 0.002mm~0.013mm.
Further, the binder is end hydroxy butadiene, and the terminal hydroxy group that preferred molecular weight is 2000~3600 is poly-
Butadiene.
Further, the plasticizer is naphthenic oil.
Further, the curing agent is isofoer diisocyanate.
Further, the deterrent is 80# microwax.
Further, the process auxiliaries are triethanolamine and 1, the mixture of 3- dihydroxy ethyl -5,5 Dimethyl Hydan.
Further, the triethanolamine and 1, the mass ratio of 3- dihydroxy ethyl -5,5 Dimethyl Hydan are 1:2~1:4.
The invention also discloses the preparation methods that a kind of casting solidifies PBX explosive, include the following steps:
(1) it weighs: weighing octogen, aluminium powder, binder, plasticizer, curing agent, deterrent and technique in proportion and help
Agent, it is spare；
(2) mix: control mixing medicine temperature between 50~55 DEG C, first by aluminium powder, binder, plasticizer, deterrent and
Process auxiliaries put into mixing machine, shut down cleaning after hybrid reaction；Then divide 3 times and put into carse, medium and small granularity octogen reaction,
Continue hybrid reaction after shutting down cleaning；Finally investment curing agent obtains medicine slurry after being divided to two sections of hybrid reactions；
(3) it is poured: the medicine slurry mixed is placed in vacuum pouring hopper, keep temperature of charge between 45~55 DEG C,
Vacuum degree≤0.5kPa of vacuum casting device is controlled, material is poured into mold or body under this vacuum condition；
(4) solidifying: the mold poured or body being put into insulating box and solidified, medicine slurry curing molding is cooled to room temperature,
Demoulding clears up remaining medicine up to PBX explosive.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention is made up of PBX explosive formulation a large number of experiments and proportion carries out reasonable selection and optimization design, system
Standby PBX explosive solid content is up to 91%, and medicine slurry has good flowing levelability, and medicine slurry discharging viscosity is less than 800Pa.s,
The laundering period is poured greater than 5h.
2, the present invention uses end hydroxy butadiene adhesive and naphthenic oil plasticiser system, and explosive stability is good,
It is highly plasticized than lower explosive without permeability phenomenon, good thermal stability at 75 DEG C.
3, present invention employs triethanolamine and glycolylurea group technology auxiliary agent, the mechanical property of explosive is further improved,
Room temperature mechanical strength is greater than 0.6MPa, and elongation percentage is greater than 30%.
4, component design of the present invention has preferable Low vulnerability, wherein three Low vulnerability tests: fast cook off test test,
Slow cook-off test, projectile impact test response grade are burning.
5, the present invention passes through conventional weighing, mixing, casting, solidifies up to PBX explosive, without applying vibration device, letter
Preparation section is changed, has reduced the vibration operation to energetic material, increase the safety of casting process.
The present invention passes through optimization adhesive composition, tertiary granule gradation design and the comprehensive methods such as adding technology auxiliary agent, system
Arming medicine processing performance is good, and the closely knit molding of explosive can be realized without vibration by conventional vacuum casting, prepare explosive actual measurement
Density reaches 99% of theoretical density or more.
Specific embodiment
In order to which technical characteristic of the invention, purpose and beneficial effect are more clearly understood, now in conjunction with specific example
Technical solution of the present invention is carried out it is described further below, techniques not described means of the present invention by usual manner in the art into
Row, it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.
A kind of casting solidification PBX explosive, the component including following mass percentage:
The mixture of main explosive and metal powder: 90%~91%；Binder: 3%~4%；Plasticizer: 4%~5%；Gu
Agent: 0.4%~0.6%；Deterrent: 0.5%~1%；Process auxiliaries: 0.1%~0.3%；
Wherein, the main explosive is octogen HMX, and content is 70%~76%, and the metal powder is aluminium powder Al,
Content is 15%~20%.
Further, the octogen HMX carries out carse, medium and small three-level grain size distribution, and particle diameter distribution is as follows: partial size
Range is that the coarse granule of 0.220mm~0.450mm accounts for the 45%~60% of the octogen HMX mass, and particle size range is
The middle particle of 0.100mm~0.200mm accounts for the 20%~35% of the octogen HMX mass, and partial size≤0.040mm thin
Grain accounts for the 15%~25% of the octogen HMX mass.
The present invention, by carrying out grain composition to it, is mentioned by selecting high explosive octogen HMX to make main body explosive
High casting system solid phase main body explosive content, obtains higher energy.
Further, the particle size range of the aluminium powder Al is 0.002mm~0.013mm, by adding appropriate fine particle
The aluminium powder Al of degree improves Explosive Heat.
Further, the binder is end hydroxy butadiene HTPB, and preferred molecular weight is low point of 2000~3600
Son amount HTPB, reduces the viscosity of mixing medicine slurry, improves the processing performance of explosive；Contain the pre- of flexible molecule chain by selection
Aggressiveness end hydroxy butadiene HTPB can effectively adjust the elasticity of casting curing type PBX explosive after molding as binder substrate
Modulus guarantees the Low vulnerability of explosive in use.
Further, the plasticizer is naphthenic oil SWY.
Further, the curing agent is isofoer diisocyanate IPDI.
Further, the deterrent is 80# microwax.
By the way that function additive is added, poured as the use of plasticizer, curing agent and deterrent not only improves composite explosives
The rheological characteristic of note process Traditional Chinese medicine pulp, at the same improved by the lubrication of plasticising and main explosive to binder solidify after explosive power
Learn performance and security performance.
Further, the process auxiliaries are triethanolamine TA and 1, the combination of 3- dihydroxy ethyl -5,5 Dimethyl Hydan HY
Object, wherein the mass ratio of the triethanolamine TA and 1,3- dihydroxy ethyl -5,5 Dimethyl Hydan HY are 1:2~1:4, pass through choosing
The Polar adjuvants HY for selecting polar micromolecules auxiliary agent TA and two degree of functionality hydroxyls with three-functionality-degree hydroxyl, is conducive to be deposited on pole
The surface of property filler octogen, while hydroxyl enters binder network by curing reaction, significantly enhances binder and master
The adhesion strength at blasting explosive granules interface；By controlling the proportion and content of three-functionality-degree TA and two degree of functionality HY, further adjust
Curing network structure, improves the maximum elongation rate of explosive after solidifying.
The invention also discloses the preparation methods that a kind of casting solidifies PBX explosive, include the following steps:
(1) it weighs: weighing octogen, aluminium powder, binder, plasticizer, curing agent, deterrent and technique in proportion and help
Agent, it is spare；
(2) mix: control mixing medicine temperature between 50~55 DEG C, start to feed intake, first by aluminium powder, binder, plasticizer,
Deterrent and process auxiliaries put into mixing machine, and mixing 8min shuts down cleaning；Then divide 3 times and put into carse, medium and small granularity Losec support
Gold mixes 10min every time, continuess to mix 15min after shutting down cleaning；Finally investment curing agent be divided to two sections respectively mixing 15min,
Medicine slurry is obtained after 20min；
(3) it is poured: the medicine slurry mixed is placed in vacuum pouring hopper, keep temperature of charge between 45~55 DEG C,
Vacuum degree≤0.5kPa of vacuum casting device is controlled, material is poured into mold or body under this vacuum condition；
(4) solidify: it is solid that the mold poured or body being put into 144~168h of solidification, medicine slurry in 50 ± 2 DEG C of insulating box
Chemical conversion type, is cooled to room temperature, and demoulds, clears up remaining medicine up to PBX explosive.
Embodiment 1
A kind of casting solidification PBX explosive, the component of mass percentage are as follows: HMX:75%；Al:15%；HTPB:
3.97%；SWY:4.85%；IPDI:0.48%；80# microwax: 0.5%；TA:0.05%；HY:0.15%.
Wherein HMX particle takes grain size distribution: particle size range is that the coarse granule of 0.220mm~0.450mm accounts for HMX mass
45%, particle size range is that the middle particle of 0.100mm~0.200mm accounts for the 35% of HMX mass, partial size≤0.040mm fine grained
Account for 0.002~0.013mm of particle size range of 20%, the Al powder of HMX mass.
It is described to be poured the preparation method for solidifying PBX explosive, it mainly comprises the steps that
(1) it weighs: weighing formula each component in proportion, it is spare；
(2) mix: control mixing medicine temperature is between 50~55 DEG C, first by Al, HTPB, SWY, 80# microwax, TA and HY
Mixing machine is put into, mixing 8min shuts down cleaning；Then divide 3 times and put into carse, medium and small granularity HMX, mix 10min every time, shut down clear
15min is continuesd to mix after reason；Finally investment IPDI is divided to two sections to mix 15min, 20min respectively, obtains with good flow levelling
The medicine slurry of property；
(3) it is poured: the medicine slurry mixed is placed in vacuum pouring hopper, keep temperature of charge between 45~55 DEG C,
Vacuum degree≤0.5kPa of vacuum casting device is controlled, material is poured into mold or body under this vacuum condition；
(4) solidify: it is solid that the mold poured or body being put into 144~168h of solidification, medicine slurry in 50 ± 2 DEG C of insulating box
Chemical conversion type, is cooled to room temperature, and demoulds, clears up remaining medicine up to PBX explosive.
Performance according to PBX explosive obtained by above-mentioned preparation process is as follows:
(1) solid concentration 90%, casting flowing levelability is good, and medicine slurry discharging viscosity 523Pa.s, the casting laundering period is greater than
5h；
(2) 20 DEG C of mechanical properties of explosive: tensile strength 0.68MPa, maximum elongation rate 31.5%；
(3) Ф 30mm × 30mm explosive column actual density 1.782g/cm3, theoretical density 1.790g/cm3, reach theoretical
The 99.5% of density；
(4) explosive surveys explosion velocity 8204m/s (density 1.782g/cm3), quick-fried hot 6306kJ/kg matches with U.S. DLE-C050
Side compares, density 1.77g/cm3, explosion velocity 8120m/s, quick-fried hot 6221kJ/kg, performance significantly improves；
(5) explosive passes through 75 DEG C of heat stabilization tests, laser heating 48h, and significant change, weight-loss ratio do not occur for sample
0.025%~0.033%, less than 0.5%, thermostability is good；
(6) explosive slow cook-off test (1 DEG C/min), fast cook off test test, projectile impact test response grade are combustion
It burns, low vulnerability is excellent.
Embodiment 2
A kind of casting solidification PBX explosive, the component of mass percentage are as follows: HMX:75%；Al:15%；HTPB:
3.98%；SWY:4.91%；IPDI:0.46%；80# microwax: 0.5%；TA:0.05%；HY:0.10%.
Wherein HMX particle takes grain size distribution: particle size range is that the coarse granule of 0.220mm~0.450mm accounts for HMX mass
55%, particle size range is that the middle particle of 0.100mm~0.200mm accounts for the 28% of HMX mass, partial size≤0.040mm fine grained
Account for 0.002~0.013mm of particle size range of 17%, the Al powder of HMX mass.
For preparation method such as embodiment 1, the performance of gained PBX explosive is as follows:
(1) solid concentration 90%, casting flowing levelability is good, and medicine slurry discharging viscosity 509Pa.s, the casting laundering period is greater than
5h；
(2) 20 DEG C of mechanical properties of explosive: tensile strength 0.67MPa, maximum elongation rate 31.0%；
(3) Ф 30mm × 30mm explosive column actual density 1.782g/cm3, theoretical density 1.790g/cm3, reach theoretical
The 99.5% of density；
(4) explosive surveys explosion velocity 8204m/s (density 1.782g/cm3), quick-fried hot 6306kJ/kg, performance significantly improves；
(5) explosive passes through 75 DEG C of heat stabilization tests, laser heating 48h, and significant change, weight-loss ratio do not occur for sample
0.015%~0.033%, less than 0.5%, thermostability is good；
(6) explosive slow cook-off test (1 DEG C/min), fast cook off test test, projectile impact test response grade are combustion
It burns, low vulnerability is excellent.
Embodiment 3
A kind of casting solidification PBX explosive, the component of mass percentage are as follows: HMX:73%；Al:17%；HTPB:
3.87%；SWY:4.94%；IPDI:0.49%；80# microwax: 0.5%；TA:0.06%；HY:0.14%.
Wherein HMX particle takes grain size distribution: particle size range is that the coarse granule of 0.220mm~0.450mm accounts for HMX mass
48%, particle size range is that the middle particle of 0.100mm~0.200mm accounts for the 37% of HMX mass, partial size≤0.040mm fine grained
The particle size range for accounting for 15%, the Al powder of HMX mass is 0.002~0.013mm.
For preparation method such as embodiment 1, the performance of gained PBX explosive is as follows:
(1) solid concentration 90%, casting flowing levelability is good, and medicine slurry discharging viscosity 480Pa.s, the casting laundering period is greater than
5h；
(2) 20 DEG C of mechanical properties of explosive: tensile strength 0.67MPa, maximum elongation rate 31.8%；
(3) Ф 30mm × 30mm explosive column actual density 1.785g/cm3, theoretical density 1.798g/cm3, reach theoretical
The 99.3% of density；
(4) explosion velocity of explosive 8145m/s (density 1.785g/cm3), quick-fried hot 6472kJ/kg is had excellent performance；
(5) explosive passes through 75 DEG C of heat stabilization tests, laser heating 48h, and significant change, weight-loss ratio do not occur for sample
0.028%~0.043%, less than 0.5%, thermostability is good；
(6) explosive slow cook-off test (1 DEG C/min), fast cook off test test, projectile impact test response grade are combustion
It burns, low vulnerability is excellent.
Embodiment 4
A kind of casting solidification PBX explosive, the component of mass percentage are as follows: HMX:73%；Al:17%；HTPB:
3.91%；SWY:4.90%；IPDI:0.48%；80# microwax: 0.5%；TA:0.06%；HY:0.15%.
Wherein HMX particle takes grain size distribution: particle size range is that the coarse granule of 0.220mm~0.450mm accounts for HMX mass
57%, particle size range is that the middle particle of 0.100mm~0.200mm accounts for the 26% of HMX mass, partial size≤0.040mm fine grained
The particle size range for accounting for 19%, the Al powder of HMX mass is 0.002~0.013mm.
For preparation method such as embodiment 1, the performance of gained PBX explosive is as follows:
(1) solid concentration 90%, casting flowing levelability is good, and medicine slurry discharging viscosity 478Pa.s, the casting laundering period is greater than
5h；
(2) 20 DEG C of mechanical properties of explosive: tensile strength 0.69MPa, maximum elongation rate 31.7%；
(3) Ф 30mm × 30mm explosive column actual density 1.785g/cm3, theoretical density 1.798g/cm3, reach theoretical
The 99.3% of density；
(4) explosion velocity of explosive 8145m/s (density 1.785g/cm3), quick-fried hot 6472kJ/kg is had excellent performance；
(5) explosive passes through 75 DEG C of heat stabilization tests, laser heating 48h, and significant change, weight-loss ratio do not occur for sample
0.019%~0.053%, less than 0.5%, thermostability is good；
(6) explosive slow cook-off test (1 DEG C/min), fast cook off test test, projectile impact test response grade are combustion
It burns, low vulnerability is excellent.
Embodiment 5
A kind of casting solidification PBX explosive, the component of mass percentage are as follows: HMX:70%；Al:20%；HTPB:
3.94%；SWY:4.91%；IPDI:0.47%；80# microwax: 0.5%；TA:0.06%；HY:0.12%.
Wherein HMX particle takes grain size distribution: particle size range is that the coarse granule of 0.220mm~0.450mm accounts for HMX mass
50%, particle size range is that the middle particle of 0.100mm~0.200mm accounts for the 33% of HMX mass, partial size≤0.040mm fine grained
Account for the 17% of HMX mass.The particle size range of Al powder is 0.002~0.013mm.
For preparation method such as embodiment 1, the performance of gained PBX explosive is as follows:
(1) solid concentration 90%, casting flowing levelability is good, and medicine slurry discharging viscosity 477Pa.s, the casting laundering period is greater than
5h；
(2) 20 DEG C of mechanical properties of explosive: tensile strength 0.69MPa, maximum elongation rate 31.5%；
(3) Ф 30mm × 30mm explosive column actual density 1.805g/cm3, theoretical density 1.816g/cm3, reach theoretical
The 99.4% of density；
(4) explosion velocity of explosive 8078m/s (density 1.805g/cm3), quick-fried hot 6686kJ/kg is had excellent performance；
(5) explosive passes through 75 DEG C of heat stabilization tests, laser heating 48h, and significant change, weight-loss ratio do not occur for sample
0.016%~0.033%, less than 0.5%, thermostability is good；
(6) explosive slow cook-off test (1 DEG C/min), fast cook off test test, projectile impact test response grade are combustion
It burns, low vulnerability is excellent.
Embodiment 6
A kind of casting solidification PBX explosive, the component of mass percentage are as follows: HMX:70%；Al:20%；HTPB:
3.89%；SWY:4.99%；IPDI:0.46%；80# microwax: 0.5%；TA:0.04%；HY:0.12%.
Wherein HMX particle takes grain size distribution: particle size range is that the coarse granule of 0.220mm~0.450mm accounts for HMX mass
45%, particle size range is that the middle particle of 0.100mm~0.200mm accounts for the 35% of HMX mass, partial size≤0.040mm fine grained
The particle size range for accounting for 20%, the Al powder of HMX mass is 0.002~0.013mm.
For preparation method such as embodiment 1, the performance of gained PBX explosive is as follows:
(1) solid concentration 90%, casting flowing levelability is good, and medicine slurry discharging viscosity 475Pa.s, the casting laundering period is greater than
5h；
(2) 20 DEG C of mechanical properties of explosive: tensile strength 0.70MPa, maximum elongation rate 32.1%；
(3) Ф 30mm × 30mm explosive column actual density 1.805g/cm3, theoretical density 1.816g/cm3, reach theoretical
The 99.4% of density；
(4) explosion velocity of explosive 8078m/s (density 1.805g/cm3), quick-fried hot 6686kJ/kg is had excellent performance；
(5) explosive passes through 75 DEG C of heat stabilization tests, laser heating 48h, and significant change, weight-loss ratio do not occur for sample
0.025%~0.053%, less than 0.5%, thermostability is good；
(6) explosive slow cook-off test (1 DEG C/min), fast cook off test test, projectile impact test response grade are combustion
It burns, low vulnerability is excellent.
Embodiment 7
A kind of casting solidification PBX explosive, the component of mass percentage are as follows: HMX:71%；Al:20%；HTPB:
3.43%；SWY:4.43%；IPDI:0.44%；80# microwax: 0.5%；TA:0.05%；HY:0.15%.
Wherein HMX particle takes grain size distribution: particle size range is that the coarse granule of 0.220mm~0.450mm accounts for HMX mass
60%, particle size range is that the middle particle of 0.100mm~0.200mm accounts for the 20% of HMX mass, partial size≤0.040mm fine grained
Account for 0.002~0.013mm of particle size range of 20%, the Al powder of HMX mass.
For preparation method such as embodiment 1, the performance of gained PBX explosive is as follows:
(1) solid concentration 91%, casting flowing levelability is good, and medicine slurry discharging viscosity 650Pa.s, the casting laundering period is greater than
5h；
(2) 20 DEG C of mechanical properties of explosive: tensile strength 0.62MPa, maximum elongation rate 30.5%；
(3) Ф 30mm × 30mm explosive column actual density 1.818g/cm3, theoretical density 1.833g/cm3, reach theoretical
The 99.2% of density；
(4) explosion velocity of explosive 8151m/s (density 1.818g/cm3), quick-fried hot 6786kJ/kg is had excellent performance；
(5) explosive passes through 75 DEG C of heat stabilization tests, laser heating 48h, and significant change, weight-loss ratio do not occur for sample
0.031%~0.048%, less than 0.5%, thermostability is good；
(6) explosive slow cook-off test (1 DEG C/min), fast cook off test test, projectile impact test response grade are combustion
It burns, low vulnerability is excellent.
Embodiment 8
A kind of casting solidification PBX explosive, the component of mass percentage are as follows: HMX:71%；Al:20%；HTPB:
3.38%；SWY:4.47%；IPDI:0.45%；80# microwax: 0.5%；TA:0.04%；HY:0.16%
Wherein HMX particle takes grain size distribution: particle size range is that the coarse granule of 0.220mm~0.450mm accounts for HMX mass
60%, particle size range is that the middle particle of 0.100mm~0.200mm accounts for the 25% of HMX mass, partial size≤0.040mm fine grained
The particle size range for accounting for 15%, the Al powder of HMX mass is 0.002~0.013mm.
For preparation method such as embodiment 1, the performance of gained PBX explosive is as follows:
(1) solid concentration 91%, casting flowing levelability is good, and medicine slurry discharging viscosity 667Pa.s, the casting laundering period is greater than
5h；
(2) 20 DEG C of mechanical properties of explosive: tensile strength 0.61MPa, maximum elongation rate 30.6%；
(3) Ф 30mm × 30mm explosive column actual density 1.818g/cm3, theoretical density 1.833g/cm3, reach theoretical
The 99.2% of density；
(4) explosion velocity of explosive 8151m/s (density 1.818g/cm3), quick-fried hot 6786kJ/kg is had excellent performance；
(5) explosive passes through 75 DEG C of heat stabilization tests, laser heating 48h, and significant change, weight-loss ratio do not occur for sample
0.028%~0.043%, less than 0.5%, thermostability is good；
(6) explosive slow cook-off test (1 DEG C/min), fast cook off test test, projectile impact test response grade are combustion
It burns, low vulnerability is excellent.
The present invention provides a kind of casting solidification PBX explosives and preparation method thereof, by optimizing adhesive composition, three-level
Grain gradation design and the comprehensive methods such as adding technology auxiliary agent, using conventional vacuum casting without vibration can be realized explosive it is closely knit at
Type, prepares that Explosive Technology performance, mechanical property, thermostability are good, and no permeability defect, explosive detonation characteristic is excellent to be had both preferably
Low vulnerability, have good application prospect in the warhead charge of larger size and labyrinth.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.
Claims (10)
1. a kind of casting solidifies PBX explosive, it is characterised in that the component including following mass percentage:
The mixture of main explosive and metal powder: 90%~91%；Binder: 3%~4%；Plasticizer: 4%~5%；Curing agent:
0.4%~0.6%；Deterrent: 0.5%~1%；Process auxiliaries: 0.1%~0.3%；
Wherein, the main explosive is octogen, and content is 70%~76%, and the metal powder is aluminium powder, and content is
15%~20%.
2. casting according to claim 1 solidifies PBX explosive, it is characterised in that: the octogen carries out carse, medium and small
Three-level grain size distribution, particle diameter distribution are as follows: particle size range is that the coarse granule of 0.220mm~0.450mm accounts for the octogen
The 45%~60% of quality, particle size range be 0.100mm~0.200mm middle particle account for the octogen quality 20%~
35%, partial size≤0.040mm fine grained account for the 15%~25% of the octogen quality.
3. casting according to claim 1 solidifies PBX explosive, it is characterised in that: the particle size range of the aluminium powder is
0.002mm~0.013mm.
4. casting according to claim 1 solidifies PBX explosive, it is characterised in that: the binder is terminal hydroxy group polybutadiene
Alkene, the end hydroxy butadiene that preferred molecular weight is 2000~3600.
5. casting according to claim 1 solidifies PBX explosive, it is characterised in that: the plasticizer is naphthenic oil.
6. casting according to claim 1 solidifies PBX explosive, it is characterised in that: the curing agent is that different Fu Er ketone two is different
Cyanate.
7. casting according to claim 1 solidifies PBX explosive, it is characterised in that: the deterrent is 80# microwax.
8. casting described in -7 any one solidifies PBX explosive according to claim 1, it is characterised in that: the process auxiliaries are
The mixture of triethanolamine and -5,5 Dimethyl Hydan of 1,3- dihydroxy ethyl.
9. casting according to claim 8 solidifies PBX explosive, it is characterised in that: the triethanolamine and 1,3- dihydroxy second
The mass ratio of -5,5 Dimethyl Hydan of base is 1:2~1:4.
10. the preparation method that a kind of casting as described in claim 1 solidifies PBX explosive, it is characterised in that include the following steps:
(1) it weighs: weighing octogen, aluminium powder, binder, plasticizer, curing agent, deterrent and process auxiliaries in proportion, it is standby
With；
(2) mix: control mixing medicine temperature is between 50~55 DEG C, first by aluminium powder, binder, plasticizer, deterrent and technique
Auxiliary agent puts into mixing machine, shuts down cleaning after hybrid reaction；Then divide 3 times and put into carse, medium and small granularity octogen reaction, shut down
Continue hybrid reaction after cleaning；Finally investment curing agent obtains medicine slurry after being divided to two sections of hybrid reactions；
(3) it is poured: the medicine slurry mixed is placed in vacuum pouring hopper, keep temperature of charge between 45~55 DEG C, control
Vacuum degree≤0.5kPa of vacuum casting device, material are poured into mold or body under this vacuum condition；
(4) solidify: the mold poured or body being put into insulating box and solidified, medicine slurry curing molding is cooled to room temperature, and is taken off
Medicine is more than mould, cleaning up to PBX explosive.
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| CN110713428A (en) * | 2019-11-06 | 2020-01-21 | 湖北航天化学技术研究所 | Casting type high polymer bonded explosive |
| CN112266308A (en) * | 2020-10-21 | 2021-01-26 | 河南北方红阳机电有限公司 | Preparation process and equipment of high-solid-phase high-viscosity mixed explosive |
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