CN107721778A - A kind of method that blasting explosive granules bonding is carried out using high density suspensions - Google Patents
A kind of method that blasting explosive granules bonding is carried out using high density suspensions Download PDFInfo
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- CN107721778A CN107721778A CN201710884196.9A CN201710884196A CN107721778A CN 107721778 A CN107721778 A CN 107721778A CN 201710884196 A CN201710884196 A CN 201710884196A CN 107721778 A CN107721778 A CN 107721778A
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- fluorine
- containing polymer
- high density
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- chmical 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
- C06B21/0083—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
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0091—Elimination of undesirable or temporary components of an intermediate or finished product, e.g. making porous or low density products, purifying, stabilising, drying; Deactivating; Reclaiming
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a kind of method that blasting explosive granules bonding is carried out using high density suspensions, including：Step 1: single chmical compound explosive particle and fluorine-containing polymer solution are subjected to dispersion mixing in perfluorotributylamine under agitation；Step 2: fluorine-containing polymer is caused to form one layer of cladding film in single chmical compound explosive particle surface using the volatilization of solvent in fluorine-containing polymer solution；Step 3: the suspension residual that the modeling powder surface of fluorine-containing polymer will be coated with using drying mode is removed.The high density suspensions that the present invention uses can realize fine dispersion mixing of the single chmical compound explosive particle during cladding under relatively low mixing speed, when avoiding using water as suspension in order to ensure to be uniformly dispersed using particles collision frequency caused by high-speed stirred it is too high caused by Particle Breakage and pattern the adverse consequences such as change.
Description
Technical field
It the present invention relates to the use of the manufacture method that particle suspension process realizes plastic binded machine-shaping, and in particular to
A kind of manufacture method that blasting explosive granules bonding is carried out using high density suspensions.
Background technology
Plastic binded (abbreviation PBX), it is based on powdered high-energy single chmical compound explosive, adds binding agent, insensitiveness
The composite explosives of the composition such as agent and plasticizer.It has low energy density height, sensitivity, mechanical property and machine-shaping property good
The advantages of good, the explosive with features can be made according to requirement.
For PBX, due to degree of packing have for the detonation property (explosion velocity, detonation pressure, quick-fried heat) of composite explosives it is very big
Influence, therefore highdensity fluorine-containing polymer has unique advantage as PBX bonding agent.It is molten by the way that fluorine-containing polymer is passed through
Solution --- the mode of solvent volatilization forms clad in single chmical compound explosive particle surface, can not only reduce the sense of single chmical compound explosive
Degree, and the single chmical compound explosive particle coated to form larger particle (also referred to as modeling powder), side by reuniting with being mutually bonded
Just following process, a large amount of tiny blasting explosive granules is it also avoid and form dust.
Common PBX modeling powders can be manufactured by water suspension method.Its implementation is to pass through high-speed stirred so that
Single chmical compound explosive and fluorine-containing polymer solution are sufficiently mixed in water, and the solvent for dissolving fluorine-containing polymer gradually volatilizees so that
Fluorine-containing polymer separates out and is coated on the surface of single chmical compound explosive particle.During above-mentioned cladding, tiny single chmical compound explosive particle
Larger particle is grown to by way of reunion, forms PBX modeling powders.
Common high-energy-density single chmical compound explosive density is generally in 1.8~1.9g/cm3Left and right (such as TATB 1.938g/cm3,
RDX1.816g/cm3, HMX 1.905g/cm3), and its density differs larger with above-mentioned single chmical compound explosive when water is as suspension,
It is uneven to be easy to occur the mixing caused by stirring is bad in whipping process, so the phenomenon of sedimentation layering.And use with it is upper
Stating the close suspension of single chmical compound explosive density can avoid the particle suspension caused by too high density contrast uneven.
The content of the invention
Instant invention overcomes the defects of prior art, there is provided one kind is entered by the use of high density perfluorotributylamine as suspension
The manufacture method of row blasting explosive granules bonding.Suspension of this method using perfluorotributylamine as high density PBX modeling powder process
Liquid, by using highdensity suspension media, the skewness of single chmical compound explosive particle is avoided under identical stirring intensity
The formation of large scale PBX moulding powder particles caused by property, has obtained that particles coat effect is good, the PBX moulding of even size distribution
Powder.
What the present invention was realized in：
A kind of method that blasting explosive granules bonding is carried out using high density suspensions, including：
Step 1: single chmical compound explosive particle and fluorine-containing polymer solution are divided in perfluorotributylamine under agitation
Dissipate mixing；
Step 2: cause fluorine-containing polymer in single chmical compound explosive particle surface using the volatilization of solvent in fluorine-containing polymer solution
Form one layer of cladding film；
Step 3: the suspension residual that the modeling powder surface of fluorine-containing polymer will be coated with using drying mode is removed.
Further scheme is：
Described fluorine-containing polymer solution, solute are fluorine-containing polymers, can be any one in F2311 or F2314
Kind, solvent is the mixed solvent of ethyl acetate or ethyl acetate and butyl acetate composition.
Described single chmical compound explosive particle is TATB, any one in RDX, HMX or their mixture.
The dosage of described perfluorotributylamine is 1-3 times of single chmical compound explosive dosage mass ratio, and fluorine-containing polymer dosage is single
The 3~10% of matter explosive consumption quality.
In step 2, the temperature of system is 40-80 DEG C during volatilization, speed of agitator 200-900r/min.
The beneficial effects of the invention are as follows：
Perfluorotributylamine (abbreviation PFTBA) is a kind of liquid of high density low surface tension, and density is about 1.86g/cm3。
PFTBA has high resistance strong acid and strong base and a strong oxidizer, low volatility, than it is great the advantages that, and not with all metal materials with
And rubber, plastic products work.Therefore, it is adapted for use as single chmical compound explosive PBX modeling powder manufacture suspension.
The high density suspensions used using the present invention can realize that single chmical compound explosive particle is wrapping under relatively low mixing speed
Fine dispersion mixing during covering, is led when avoiding using water as suspension in order to ensure to be uniformly dispersed using high-speed stirred
The adverse consequences such as the too high caused Particle Breakage of particles collision frequency of cause and pattern change.By to three kinds of single chmical compound explosives and
Fluorine-containing polymer shows relative to the compatibility test of perfluorotributylamine, on perfluorotributylamine is all within the scope of the temperature of broadness
The non-solvent of single chmical compound explosive and fluorine-containing polymer is stated, a kind of preferable high density suspensions can be used as.
Brief description of the drawings
Fig. 1 is preparation flow schematic diagram of the present invention.
Embodiment：
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but the application mode of the present invention is not
It is limited to this.
Embodiment 1
A kind of method that blasting explosive granules bonding is carried out using high density suspensions, including：
(1) it is 1 according to mass ratio by single chmical compound explosive TATB particles and perfluorotributylamine:1 passes through stirring under agitation
Dispersion mixing is carried out, is 40 DEG C by temperature controlled water baths, speed of agitator 200r/min；
(2) fluorine-containing polymer F2314 is weighed according to the 3% of TATB mass, being dissolved in ethyl acetate turns into homogeneous phase solution,
And it is added dropwise in single chmical compound explosive particle suspension liquid；
(3) it is 40 DEG C to control temperature, speed of agitator 200r/min；Moulding powder particles are passed through after solvent volatilization completely
The mode of filtering is separated with suspension.The suspension on the modeling powder surface of fluorine-containing polymer will be coated with using drying mode
Residual removes.
Embodiment 2
A kind of method that blasting explosive granules bonding is carried out using high density suspensions, including：
(1) it is 1 according to mass ratio by single chmical compound explosive HMX particles and perfluorotributylamine:3 under agitation by stir into
Row dispersion mixing, it is 80 DEG C by temperature controlled water baths, speed of agitator 900r/min；
(2) fluorine-containing polymer F2311 is weighed according to the 10% of HMX mass, is dissolved in ethyl acetate and is formed with butyl acetate
In the mixed solvent turn into homogeneous phase solution, and be added dropwise in single chmical compound explosive particle suspension liquid；
(3) it is 80 DEG C to control temperature, speed of agitator 900r/min；Moulding powder particles are passed through after solvent volatilization completely
The mode of filtering is separated with suspension.The suspension on the modeling powder surface of fluorine-containing polymer will be coated with using drying mode
Residual removes.
Embodiment 3
A kind of method that blasting explosive granules bonding is carried out using high density suspensions, including：
(1) by explosive TATB and RDX according to 1：1 ratio is mixed to get blasting explosive granules, by blasting explosive granules and the fourth of perfluor three
Amine is 1 according to mass ratio:2 carry out dispersion mixing by stirring under agitation, are 60 DEG C by temperature controlled water baths, stirring
Rotating speed is 500r/min；
(2) fluorine-containing polymer F2314 is weighed according to the 5% of HMX mass, being dissolved in ethyl acetate turns into homogeneous phase solution,
And it is added dropwise in blasting explosive granules suspension；
(3) it is 60 DEG C to control temperature, speed of agitator 500r/min；Moulding powder particles are passed through after solvent volatilization completely
The mode of filtering is separated with suspension.The suspension on the modeling powder surface of fluorine-containing polymer will be coated with using drying mode
Residual removes.
Embodiment 4
The modeling powder particle diameter distribution obtained in the method for embodiment 1 is tested
Obtained modeling powder is sieved using the standard screen of different meshes, and to different-grain diameter by the way of weighing
Proportion carries out statistical analysis, and different batches test result averages, and contrasts and water and complete is used under identical preparation condition
Particle diameter when fluorine tri-n-butylamine is as suspension.Experimental result using TATB as single chmical compound explosive is shown in Table 1.
The single chmical compound explosive TATB of table 1 PBX modeling powders particle diameter distribution test
Remarks：In upper table, in addition to bath temperature, rotating speed, other method and steps are same as Example 1.
Embodiment 5
The modeling powder covered effect test that embodiment 1 obtains
Covered effect using surface fluorine element assay fluorine-containing polymer to single chmical compound explosive particle, is contrasted in identical system
Surface fluorine element ratio when using water and perfluorotributylamine as suspension under the conditions of standby.Experiment using TATB as single chmical compound explosive
It the results are shown in Table 2.
The single chmical compound explosive TATB of table 2 PBX modeling powder fluorine-contained surfaces rate test
Remarks：In upper table, in addition to bath temperature, rotating speed, other method and steps are same as Example 1.
Embodiment 6
The modeling powder Mechanics Performance Testing that embodiment 1 obtains
Using quasistatic Brazilian test measure PBX modeling powders mechanical property, by PBX modeling powders be pressed into Φ 20mm ×
6mm powder column is tested.Different batches test result is averaged, and contrasts and water and perfluor three are used under identical preparation condition
Modulus and intensity difference when butylamine is as suspension.Experimental result using TATB as single chmical compound explosive is shown in Table 3.
The single chmical compound explosive TATB of table 3 PBX modeling powder Mechanics Performance Testings
Remarks：In upper table, in addition to bath temperature, rotating speed, other method and steps are same as Example 1.
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 (6)
- A kind of 1. method that blasting explosive granules bonding is carried out using high density suspensions, it is characterised in that including：Step 1: single chmical compound explosive particle and fluorine-containing polymer solution are carried out in perfluorotributylamine under agitation scattered mixed Close；Step 2: the volatilization using solvent in fluorine-containing polymer solution causes fluorine-containing polymer to be formed in single chmical compound explosive particle surface One layer of cladding film；Step 3: the suspension residual that the modeling powder surface of fluorine-containing polymer will be coated with using drying mode is removed.
- 2. the method for blasting explosive granules bonding is carried out using high density suspensions according to claim 1, it is characterised in that：Described fluorine-containing polymer solution, solute are fluorine-containing polymers, and solvent is ethyl acetate or ethyl acetate and butyl acetate The mixed solvent of composition.
- 3. the method for blasting explosive granules bonding is carried out using high density suspensions according to claim 1, it is characterised in that：Described fluorine-containing polymer is any one in F2311 or F2314.
- 4. the method for blasting explosive granules bonding is carried out using high density suspensions according to claim 1, it is characterised in that：Described single chmical compound explosive particle is TATB, any one in RDX, HMX or their mixture.
- 5. the method for blasting explosive granules bonding is carried out using high density suspensions according to claim 1, it is characterised in that：The dosage of described perfluorotributylamine is 1-3 times of single chmical compound explosive dosage mass ratio, and fluorine-containing polymer dosage is fried for simple substance The 3~10% of survival dose quality.
- 6. the method for blasting explosive granules bonding is carried out using high density suspensions according to claim 1, it is characterised in that：In step 2, the temperature of system is 40-80 DEG C during volatilization, speed of agitator 200-900r/min.
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| CN201710884196.9A CN107721778A (en) | 2017-09-26 | 2017-09-26 | A kind of method that blasting explosive granules bonding is carried out using high density suspensions |
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| CN201710884196.9A CN107721778A (en) | 2017-09-26 | 2017-09-26 | A kind of method that blasting explosive granules bonding is carried out using high density suspensions |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108314596A (en) * | 2018-03-23 | 2018-07-24 | 中国工程物理研究院化工材料研究所 | A kind of TATB explosives ultra-fine grain and preparation method thereof |
| CN114100461A (en) * | 2020-08-28 | 2022-03-01 | 南京理工大学 | Preparation system and method of high polymer bonded explosive based on microfluidics |
| CN114100461B (en) * | 2020-08-28 | 2024-05-17 | 南京理工大学 | Microfluidic-based preparation system and method for high polymer bonded explosive |
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| US20050183803A1 (en) * | 2004-01-13 | 2005-08-25 | Akester Jeffrey D. | Explosive molding powder slurry processing in a nonaqueous medium using a mixed solvent lacquer system |
| CN105503756A (en) * | 2016-01-29 | 2016-04-20 | 西安近代化学研究所 | Pluridentate macromolecular bonding agent and preparation method thereof |
| CN106116995A (en) * | 2016-06-24 | 2016-11-16 | 中国工程物理研究院化工材料研究所 | The method press-fiting aluminum composition modeling powder is prepared in a kind of aqueous suspension |
| CN106905090A (en) * | 2017-03-28 | 2017-06-30 | 中国工程物理研究院化工材料研究所 | A kind of heat-resisting HMX base complex of high density and preparation method |
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2017
- 2017-09-26 CN CN201710884196.9A patent/CN107721778A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050183803A1 (en) * | 2004-01-13 | 2005-08-25 | Akester Jeffrey D. | Explosive molding powder slurry processing in a nonaqueous medium using a mixed solvent lacquer system |
| CN105503756A (en) * | 2016-01-29 | 2016-04-20 | 西安近代化学研究所 | Pluridentate macromolecular bonding agent and preparation method thereof |
| CN106116995A (en) * | 2016-06-24 | 2016-11-16 | 中国工程物理研究院化工材料研究所 | The method press-fiting aluminum composition modeling powder is prepared in a kind of aqueous suspension |
| CN106905090A (en) * | 2017-03-28 | 2017-06-30 | 中国工程物理研究院化工材料研究所 | A kind of heat-resisting HMX base complex of high density and preparation method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108314596A (en) * | 2018-03-23 | 2018-07-24 | 中国工程物理研究院化工材料研究所 | A kind of TATB explosives ultra-fine grain and preparation method thereof |
| CN108314596B (en) * | 2018-03-23 | 2020-10-16 | 中国工程物理研究院化工材料研究所 | TATB explosive superfine particle and preparation method thereof |
| CN114100461A (en) * | 2020-08-28 | 2022-03-01 | 南京理工大学 | Preparation system and method of high polymer bonded explosive based on microfluidics |
| CN114100461B (en) * | 2020-08-28 | 2024-05-17 | 南京理工大学 | Microfluidic-based preparation system and method for high polymer bonded explosive |
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Application publication date: 20180223 |