CN103864544A - High-fluidity mixed explosive used for detonator, and its preparation method - Google Patents
High-fluidity mixed explosive used for detonator, and its preparation method Download PDFInfo
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- CN103864544A CN103864544A CN201210532306.2A CN201210532306A CN103864544A CN 103864544 A CN103864544 A CN 103864544A CN 201210532306 A CN201210532306 A CN 201210532306A CN 103864544 A CN103864544 A CN 103864544A
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- shellac
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- butyl methacrylate
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- detonator
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Abstract
The invention discloses a high-fluidity mixed explosive used for a detonator, and its preparation method. The mixed explosive comprises 90-98wt% of a simple substance explosive, 0-6wt% of a deterrent, and 1-8wt% and preferably 1-4wt% of a binder comprising 1-4wt% of polybutyl methacrylate and 0-4wt% of shellac. Compared with explosives in the prior art, the high-fluidity RDX mixed explosive used for a detonator has the following advantages: 1, the particle of the mixed explosive is spherical in shape, so the fluidity of the mixed explosive is good; 2, the surface of the mixed explosive is coated with polybutyl methacrylate, so the surface is smooth, and the mixed explosive has a good particle strength; and 3, the formula and the preparation method of the mixed explosive are simple.
Description
Technical field
The invention belongs to industrial explosive and preparation method thereof, especially belong to a kind of high free-running property pyrotechnic composition for industrial automation quick-burning charge detonator production line and preparation method thereof.
Background technology
In order to change traditional detonator production line manual operations, hazardous operation, labour intensity is large, the pressing issues that production efficiency is low.At present, detonator production more and more trends towards automatic production line and produces, automatic powder adding dosing in automatic production process, and production line powder charge speed is accelerated.Along with the development of detonator production line, current existing detonator with pyrotechnic composition at the needs that are difficult to meet automatic production.As shellac granulation etc. causes stifled medicine, the bad phenomenon of powder charge consistence for the mobility missionary society of the pyrotechnic composition of charging explosive in detonator in quick-burning charge process, thereby cause detonator quality problems, affect the performance of detonating, there is security incident, be difficult to meet the demand that detonator automatic production line is produced fast.
Summary of the invention
The object of the present invention is to provide a kind of free-running property good, powder intensity is high, and formula simply enough meets detonator automatic production line to wandering a kind of high free-running property pyrotechnic composition for charging explosive in detonator of explosive and preparation method thereof.
Realizing technical solution of the present invention is: a kind of high free-running property pyrotechnic composition for charging explosive in detonator, composition and proportioning are: single chmical compound explosive 90 ~ 98wt%, deterrent 0 ~ 6 wt% and binding agent poly-n-butyl methacrylate and shellac 1 ~ 8 wt %, preferably 1 ~ 4 wt %, wherein poly-n-butyl methacrylate is 1 ~ 4 wt %, and shellac is 0 ~ 4 wt %.
Described single chmical compound explosive is Cyclotrimethylene trinitramine (RDX).
Described deterrent is stearic acid or paraffin or its mixture.
A preparation method for high free-running property pyrotechnic composition for detonator, comprises the following steps:
The first step, is dissolved in poly-n-butyl methacrylate in ethyl acetate, and shellac is dissolved in alcohol;
Second step, is added to the water single chmical compound explosive and deterrent, heats up and stirs;
The 3rd step, makes second step the spirituous solution that first adds shellac when water suspension is heated to 78-85 DEG C, then cools to 70-76 DEG C of ethyl acetate solution that adds again poly-n-butyl methacrylate;
The 4th step, solvent flashing, fully stirs granulating, and finally cooling stops stirring, then the pyrotechnic composition that filter, wash, are dried, sieve described in just can making.
In the first step, the mass concentration of the spirituous solution of shellac and the ethyl acetate solution of poly-n-butyl methacrylate is 5 ~ 20%.
In second step water be single chmical compound explosive and deterrent quality sum 1.5-2.0 doubly, described deterrent is stearic acid or paraffin or its mixture, described single chmical compound explosive is RDX.
In the 3rd step, the joining day of the spirituous solution of shellac and the ethyl acetate solution of poly-n-butyl methacrylate is 5 ~ 20 minutes.
In the 4th step, in pyrotechnic composition, single chmical compound explosive accounts for 90 ~ 98wt%, and deterrent accounts for 0 ~ 6 wt%, and poly-n-butyl methacrylate and shellac account for 1 ~ 8 wt %, and wherein poly-n-butyl methacrylate is 1 ~ 4 wt %, and shellac is 0 ~ 4 wt %.
Compared with prior art, its remarkable advantage is in the present invention:
(1) high free-running property RDX pyrotechnic composition for detonator of the present invention, its blasting explosive granules is spherical in shape, and free-running property is good.(2) detonator of the present invention is coated by poly-n-butyl methacrylate with high free-running property RDX pyrotechnic composition particle surface, and smooth surface, has good granule strength.(3) formula making method is simple.
Embodiment
Further illustrate with embodiment below:
Embodiment 1: to produce 1 kilogram of high free-running property pyrotechnic composition for detonator as example, select the mass percent of the each component of high free-running property pyrotechnic composition that is used for detonator to be: RDX90%, poly-n-butyl methacrylate 4%, stearic acid 6%.Measure the amount of water according to liquid-solid mass ratio 2:1.Accurately take RDX900g by said ratio, poly-n-butyl methacrylate 40g, stearic acid 60g, measures water 2000g.
Operation steps: the first step, is dissolved in poly-n-butyl methacrylate ethyl acetate and is mixed with the solution of 5% mass concentration.Second step, heats up RDX, stearic acid and water mix and blend to form uniform suspension liquid.The 3rd step, when temperature is raised to 76 DEG C, keeps constant temperature, and the ethyl acetate solution of the poly-n-butyl methacrylate preparing in the first step was at the uniform velocity joined in system in 20 minutes.After interpolation, be incubated 5 minutes, then cool to below 50 DEG C, stop stir, then filter, washing, being dried, sieving to obtain high free-running property high explosive for detonator of the present invention.With reference to GJB552A-2005, record free-running property 64S.
Second step according to the size control of equipment, makes stir shaft occur darker whirlpool around to stirring velocity in final step, presents unit for uniform suspension in device.
Embodiment 2: to produce 1 kilogram of high free-running property pyrotechnic composition for detonator as example, select the mass percent of the each component of high free-running property pyrotechnic composition that is used for detonator to be: RDX98%, poly-n-butyl methacrylate 1%, shellac 1%.Measure the amount of water according to liquid-solid mass ratio 1.5:1.Accurately take RDX980g by said ratio, poly-n-butyl methacrylate 10g, shellac 10g, measures water 1500g.
Operation steps: the first step, poly-n-butyl methacrylate is dissolved in to ethyl acetate and is mixed with the solution of 20% mass concentration, shellac is dissolved in to ethanol and makes the solution of 20% mass concentration.Second step, forms uniform suspension liquid by RDX and the intensification of water mix and blend.The 3rd step, when temperature is raised to 85 DEG C, keep constant temperature, the ethanolic soln of shellac was at the uniform velocity joined in system in 5 minutes, after interpolation, be incubated 5 minutes, when temperature drops to 70 DEG C, keep constant temperature, the ethyl acetate solution of poly-n-butyl methacrylate was at the uniform velocity joined in system in 5 minutes, after interpolation, be incubated 5 minutes.Then cool to below 50 DEG C, stop stir, then filter, washing, being dried, sieving to obtain high free-running property high explosive for detonator of the present invention.With reference to GJB552A-2005, record free-running property 63S.
Embodiment 3: to produce 1 kilogram of high free-running property pyrotechnic composition for detonator as example, select the mass percent of the each component of high free-running property pyrotechnic composition that is used for detonator to be: RDX94%, stearic acid 2%, poly-n-butyl methacrylate 3%, shellac 1%.Measure the amount of water according to liquid-solid mass ratio 1.7:1.Accurately take RDX940g by said ratio, stearic acid 20g, poly-n-butyl methacrylate 30g, shellac 10g, measures water 1700g.
Operation steps: the first step, poly-n-butyl methacrylate is dissolved in to ethyl acetate and is mixed with the solution of 10% mass concentration, shellac is dissolved in to ethanol and makes the solution of 10% mass concentration.Second step, by RDX, stearic acid and water mix and blend heat up and form uniform suspension liquid.The 3rd step, when temperature is raised to 78 DEG C, keep constant temperature, the ethanolic soln of shellac was at the uniform velocity joined in system in 10 minutes, after interpolation, be incubated 5 minutes, when temperature drops to 75 DEG C, keep constant temperature, the ethyl acetate solution of poly-n-butyl methacrylate was at the uniform velocity joined in system in 10 minutes, after interpolation, be incubated 5 minutes.Then cool to below 50 DEG C, stop stir, then filter, washing, being dried, sieving to obtain high free-running property high explosive for detonator of the present invention.With reference to GJB552A-2005, record free-running property 62S.
Embodiment 4: to produce 1 kilogram of high free-running property pyrotechnic composition for detonator as example, select the mass percent of the each component of high free-running property pyrotechnic composition that is used for detonator to be: RDX92%, stearic acid 2%, paraffin 2%, poly-n-butyl methacrylate 3%, shellac 1%.Measure the amount of water according to liquid-solid mass ratio 1.6:1.Accurately take RDX920g by said ratio, stearic acid 20g, paraffin 20g, poly-n-butyl methacrylate 30g, shellac 10g, measures water 1600g.
Operation steps: the first step, poly-n-butyl methacrylate is dissolved in to ethyl acetate and is mixed with the solution of 15% mass concentration, shellac is dissolved in to ethanol and makes the solution of 15% mass concentration.Second step, by RDX, stearic acid, paraffin and water mix and blend heat up and form uniform suspension liquid.The 3rd step, when temperature is raised to 80 DEG C, keep constant temperature, the ethanolic soln of shellac was at the uniform velocity joined in system in 10 minutes, after interpolation, be incubated 5 minutes, when temperature drops to 76 DEG C, keep constant temperature, the ethyl acetate solution of poly-n-butyl methacrylate was at the uniform velocity joined in system in 10 minutes, after interpolation, be incubated 5 minutes.Then cool to below 50 DEG C, stop stir, then filter, washing, being dried, sieving to obtain high free-running property high explosive for detonator of the present invention.With reference to GJB552A-2005, record free-running property 62S.
Embodiment 5: to produce 1 kilogram of high free-running property pyrotechnic composition for detonator as example, select the mass percent of the each component of high free-running property pyrotechnic composition that is used for detonator to be: RDX95%, paraffin 2%, poly-n-butyl methacrylate 2%, shellac 1%.Measure the amount of water according to liquid-solid mass ratio 1.6:1.Accurately take RDX950g by said ratio, paraffin 20g, poly-n-butyl methacrylate 20g, shellac 10g, measures water 1600g.
Operation steps: the first step, poly-n-butyl methacrylate is dissolved in to ethyl acetate and is mixed with the solution of 10% mass concentration, shellac is dissolved in to ethanol and makes the solution of 10% mass concentration.Second step, by RDX, paraffin and water mix and blend heat up and form uniform suspension liquid.The 3rd step, when temperature is raised to 82 DEG C, keep constant temperature, the ethanolic soln of shellac was at the uniform velocity joined in system in 12 minutes, after interpolation, be incubated 5 minutes, when temperature drops to 74 DEG C, keep constant temperature, the ethyl acetate solution of poly-n-butyl methacrylate was at the uniform velocity joined in system in 12 minutes, after interpolation, be incubated 5 minutes.Then cool to below 50 DEG C, stop stir, then filter, washing, being dried, sieving to obtain high free-running property high explosive for detonator of the present invention.With reference to GJB552A-2005, record free-running property 62S.
Claims (10)
1. the high free-running property pyrotechnic composition for charging explosive in detonator, the composition and the proportioning that it is characterized in that described pyrotechnic composition are: single chmical compound explosive 90 ~ 98wt%, deterrent 0 ~ 6 wt% and binding agent poly-n-butyl methacrylate and shellac 1 ~ 8 wt %, wherein poly-n-butyl methacrylate is 1 ~ 4 wt %, and shellac is 0 ~ 4 wt %.
2. the high free-running property pyrotechnic composition for charging explosive in detonator according to claim 1, is characterized in that described binding agent poly-n-butyl methacrylate and preferably 1 ~ 4 wt % of shellac content.
3. the high free-running property pyrotechnic composition for charging explosive in detonator according to claim 1, is characterized in that described single chmical compound explosive is Cyclotrimethylene trinitramine; Described deterrent is stearic acid or paraffin or its mixture.
4. the high free-running property pyrotechnic composition for charging explosive in detonator according to claim 1, the pyrotechnic composition described in it is characterized in that are prepared in accordance with the following methods:
The first step, is dissolved in poly-n-butyl methacrylate in ethyl acetate, and shellac is dissolved in alcohol;
Second step, is added to the water single chmical compound explosive and deterrent, heats up and stirs;
The 3rd step, makes second step the spirituous solution that first adds shellac when water suspension is heated to 78-85 DEG C, then cools to 70-76 DEG C of ethyl acetate solution that adds again poly-n-butyl methacrylate;
The 4th step, solvent flashing, fully stirs granulating, and finally cooling stops stirring, then the pyrotechnic composition that filter, wash, are dried, sieve described in just can making.
5. according to the high free-running property pyrotechnic composition for charging explosive in detonator described in claim 1 or 4, it is characterized in that the mass concentration of the spirituous solution of the shellac described in the first step and the ethyl acetate solution of poly-n-butyl methacrylate is 5 ~ 20%.
6. according to the high free-running property pyrotechnic composition for charging explosive in detonator described in claim 1 or 4, it is characterized in that the water described in second step is single chmical compound explosive and deterrent quality sum 1.5-2.0 times.
7. according to the high free-running property pyrotechnic composition for charging explosive in detonator described in claim 1 or 4, it is characterized in that the joining day of the spirituous solution of shellac described in the 3rd step and the ethyl acetate solution of poly-n-butyl methacrylate is 5 ~ 20 minutes.
8. according to the high free-running property pyrotechnic composition for charging explosive in detonator described in claim 1 or 4, it is characterized in that in the pyrotechnic composition described in the 4th step, single chmical compound explosive accounts for 90 ~ 98wt%, deterrent accounts for 0 ~ 6 wt%, poly-n-butyl methacrylate and shellac account for 1 ~ 8 wt %, wherein poly-n-butyl methacrylate is 1 ~ 4 wt %, and shellac is 0 ~ 4 wt %.
9. a preparation method for high free-running property pyrotechnic composition for detonator, is characterized in that said method comprising the steps of:
The first step, is dissolved in poly-n-butyl methacrylate in ethyl acetate, and shellac is dissolved in alcohol;
Second step, is added to the water single chmical compound explosive and deterrent, heats up and stirs;
The 3rd step, makes second step the spirituous solution that first adds shellac when water suspension is heated to 78-85 DEG C, then cools to 70-76 DEG C of ethyl acetate solution that adds again poly-n-butyl methacrylate;
The 4th step, solvent flashing, fully stirs granulating, and finally cooling stops stirring, then the pyrotechnic composition that filter, wash, are dried, sieve described in just can making.
10. the preparation method of high free-running property pyrotechnic composition for detonator according to claim 9, is characterized in that the mass concentration of the spirituous solution of the shellac described in the first step and the ethyl acetate solution of poly-n-butyl methacrylate is 5 ~ 20%; Water described in second step is single chmical compound explosive and deterrent quality sum 1.5-2.0 times, and described deterrent is stearic acid or paraffin or its mixture, and described single chmical compound explosive is Cyclotrimethylene trinitramine; The joining day of the spirituous solution of shellac described in the 3rd step and the ethyl acetate solution of poly-n-butyl methacrylate is 5 ~ 20 minutes; In pyrotechnic composition described in the 4th step, single chmical compound explosive accounts for 90 ~ 98wt%, and deterrent accounts for 0 ~ 6 wt%, and poly-n-butyl methacrylate and shellac account for 1 ~ 8 wt %, and wherein poly-n-butyl methacrylate is 1 ~ 4 wt %, and shellac is 0 ~ 4 wt %.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109293459A (en) * | 2018-10-25 | 2019-02-01 | 山西北化关铝化工有限公司 | A kind of detonator assembly explosive and preparation method thereof |
| CN109503301A (en) * | 2019-01-14 | 2019-03-22 | 湖北航天化学技术研究所 | A kind of hydrocarbon fuel-rich propellant |
| CN109574773A (en) * | 2019-01-14 | 2019-04-05 | 湖北航天化学技术研究所 | A kind of boron-based fuel-rich |
| CN110937961A (en) * | 2019-12-23 | 2020-03-31 | 甘肃银光化学工业集团有限公司 | Mixed explosive of flame-retardant agent for coal mine and preparation method thereof |
| CN115819160A (en) * | 2022-11-25 | 2023-03-21 | 山西北化关铝化工有限公司 | Explosive for detonator assembly and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109293459A (en) * | 2018-10-25 | 2019-02-01 | 山西北化关铝化工有限公司 | A kind of detonator assembly explosive and preparation method thereof |
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| CN110937961B (en) * | 2019-12-23 | 2021-09-10 | 甘肃银光化学工业集团有限公司 | Mixed explosive of flame-retardant agent for coal mine and preparation method thereof |
| CN115819160A (en) * | 2022-11-25 | 2023-03-21 | 山西北化关铝化工有限公司 | Explosive for detonator assembly and preparation method thereof |
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