CN102887804B - Second-pass propellant for detonator - Google Patents
Second-pass propellant for detonator Download PDFInfo
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- CN102887804B CN102887804B CN201210354498.2A CN201210354498A CN102887804B CN 102887804 B CN102887804 B CN 102887804B CN 201210354498 A CN201210354498 A CN 201210354498A CN 102887804 B CN102887804 B CN 102887804B
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Abstract
The invention belongs to the field of explosives, particularly discloses a second-pass propellant for a detonator, and solves the technical problems of large amount of dust in the production process a second-pass propellant product which is used in the detonator at present, and low granularity uniformity of the product. The second-pass propellant for the detonator is prepared by the following steps of: a) selecting cyclonite and methyl methacrylate; b) adding water into a reaction kettle, adding cyclonite into the reaction kettle, and stirring to prepare suspension; c) fully dissolving the methyl methacrylate in ethyl acetate to prepare an adhesion agent solution; d) slowly adding the adhesion agent solution into the suspension at constant speed; e) after the ethyl acetate is fully evaporated, stopping vacuumizing; f) filtering the solution in the reaction kettle; and g) fully drying a filtering medium to obtain the second-pass propellant for the detonator. The relative performance indexes of a product meet the charging and performance requirements of the detonator; and experiments prove that the second-pass propellant is very suitable for the common detonator.
Description
Technical field
The invention belongs to explosive field, specifically a kind of detonator second powder charge.
Background technology
For many years, China's many employings Cyclotrimethylene trinitramine as the powder charge of detonator second starting material, process, make it the second powder charge being suitable for detonator.Cyclotrimethylene trinitramine chemical formula is (CH
2nNO
2)
3, being a kind of clear crystal, being usually used in explosive field, is the extremely strong powerful explosive of a kind of explosive power.Cyclotrimethylene trinitramine is water insoluble, but more soluble in the ring ethyl ketone heated, oil of mirbane, second triol and ethyl acetate.Current most detonator factory often adopts craft or mechanically mixing explained hereafter, and cause dust in production process comparatively large, product granularity is uneven, and product free-running property is poor, easily causes detonator neglected loading or less loaded phenomenon, causes scrap rate in product higher.
Summary of the invention
The present invention is the technical problem that in the second powder charge process of producing product used in the current detonator of solution, dust is comparatively large, product granularity is uneven, free-running property is poor, provides the powder charge of a kind of detonator second.
The present invention realizes by the following technical solutions: the powder charge of a kind of detonator second, following technique is adopted to make: (a), choose Cyclotrimethylene trinitramine and methyl methacrylate, with the two gross weight for benchmark, Cyclotrimethylene trinitramine is 98.0% ~ 99.0%, and methyl methacrylate is 1.0% ~ 2.0%; (b), be that the water of Cyclotrimethylene trinitramine and methyl methacrylate gross weight 1.5 ~ 2 times adds in reactor by weight, and Cyclotrimethylene trinitramine to be also added in reactor, to stir and make suspension; (c), methyl methacrylate is fully dissolved in ethyl acetate, make binder solution; D, under (), whipped state, heated suspension liquid to 50 DEG C ~ 60 DEG C, slowly at the uniform velocity adds binder solution after binder solution adds in suspension, continues to be heated to 65 DEG C ~ 75 DEG C, open vacuum system, vacuumize the top of reactor inner suspension liquid; E (), binder solution add after, the solution in reactor is continued be warming up to 75 DEG C ~ 80 DEG C, after ethyl acetate is all evaporated, the solution in reactor is cooled to 30 DEG C ~ 40 DEG C, stops vacuumizing; (f), by filter cloth, the solution in reactor is filtered, and filtering medium to be washed; (g), by washing after filtering medium fully dry, obtain the powder charge of detonator second.When being added in suspension by binder solution, be the speed controlling to add by observing the granulation progress of Cyclotrimethylene trinitramine, after making solution add end, Cyclotrimethylene trinitramine granulation completes.
Described Cyclotrimethylene trinitramine and methyl methacrylate are market buys and obtain; Methyl methacrylate molecular formula is CH
2c (CH
3) COOCH
3, be a kind of colourless volatile liquid, for the manufacture of resin, plastics, coating, tackiness agent and lubricant; Cyclotrimethylene trinitramine being added to the water, making suspension through stirring; The mass ratio of Cyclotrimethylene trinitramine and methyl methacrylate can ensure that the product free-running property prepared is good and not affect the effect of Cyclotrimethylene trinitramine as explosive.The quality of water is 1.5 ~ 2 times of Cyclotrimethylene trinitramine and methyl methacrylate gross weight, ensures that in the suspension made, Cyclotrimethylene trinitramine is evenly distributed and medium density, ensures carrying out smoothly of crystallisation process; The amount of ethyl acetate is abundant, ensures that methyl methacrylate is fully dissolved in ethyl acetate; When reactor suspension is heated to 65 DEG C ~ 75 DEG C, open vacuum system, the top of reactor inner suspension liquid is vacuumized, binder solution is slowly added in suspension simultaneously; Dropping process will stir solution, ensures that the Cyclotrimethylene trinitramine in solution keeps suspended state; After binder solution adds, Cyclotrimethylene trinitramine is dissolved in ethyl acetate gradually, and due to solution temperature higher, ethyl acetate is constantly evaporated, the continuous crystallization of Cyclotrimethylene trinitramine in this course, and the methyl methacrylate in ethyl acetate is also constantly separated out and be coated on the surface of Cyclotrimethylene trinitramine, this process is called granulation process; This method is called water suspension method.Suspension temperature rises to 65 DEG C ~ 75 DEG C, is conducive to the evaporation of ethyl acetate, and opening vacuum system can by the ethyl acetate extraction still of evaporation.Binder solution adds the globule size of the length velocity relation in suspension to crystallized product and the homogeneity of size-grade distribution, add excessive velocities, crystallized product granularity meeting size is uneven, and waste product is more, the requirement of product granularity can not be met, therefore add fashionable requirement and slowly add; The general speed being controlled to add aborning by the granulation progress of observing Cyclotrimethylene trinitramine, after guaranteeing to make solution add end, Cyclotrimethylene trinitramine also basic granulation completes, to ensure that the Cyclotrimethylene trinitramine granularity that crystallization goes out meets related process requirement.Reactor is a kind of container being used as physics or chemical reaction, by the structure design of container and parameter configuration, realizes the mixture function of the heating of processing requirement, evaporation, cooling and low high speed.After granulation process terminates, by the temperature to 75 in reactor DEG C ~ 80 DEG C, be beneficial to the evaporation of residual acetic acid ethyl ester; After the evaporation completely of ethyl acetate, the temperature in reactor is reduced to 30 DEG C ~ 40 DEG C, prevents the Surface coating of having separated out from having the Cyclotrimethylene trinitramine particle from caking of methyl methacrylate; Stop vacuumizing simultaneously, the solution in reactor is taken out; Afterwards the solution taken out is filtered by filter cloth, and with water, the filtering medium after filtration is washed, more abundant drying is carried out to the product after washing, obtain the powder charge of detonator second.Products obtained therefrom size-grade distribution is that about 30%, 40 order ~ 60 orders that 20 order ~ 40 object particles account for product account for about 30%, and 60 order ~ 100 orders account for 30%, and size-grade distribution is very even.The related performance indicators that table 1 is product of the present invention, the requirement of the defined that is all up to state standards.
The present invention adopts water suspension method that high polymer binder (methyl methacrylate) and Cyclotrimethylene trinitramine are bonded into particulate state, prepares the powder charge of detonator second, inherently improves detonator two road charge process; The product granularity produced is even, and avoids the problem that there is dust in mechanical grinding process; There is one deck methyl methacrylate at the Surface coating of Cyclotrimethylene trinitramine, substantially increase the free-running property of Cyclotrimethylene trinitramine.The related performance indicators of this product all meets relevant national standard, wherein impact sensitivity and explosion velocity as compared with the past product be improved, and energy is high, and consistency is good, and shock sensitivity is moderate, is very suitable for the second powder charge for plain detonator.
Embodiment
A kind of detonator second powder charge, following technique is adopted to make: (a), choose Cyclotrimethylene trinitramine and methyl methacrylate, with the two gross weight for benchmark, Cyclotrimethylene trinitramine is that 98.0% ~ 99.0%(can select 98.0%, 98.2%, 98.4%, 98.6%, 98.8%, 99.0% etc.), methyl methacrylate is that 1.0% ~ 2.0%(can select 1.0%, 1.2%, 1.4%, 1.6%, 1.8%, 2.0% etc.); (b), be that Cyclotrimethylene trinitramine and methyl methacrylate gross weight 1.5 ~ 2(can select 1.5,1.7,1.9,2 etc. by weight) water doubly adds in reactor, and Cyclotrimethylene trinitramine is also added in reactor, stir and make suspension; (c), methyl methacrylate is fully dissolved in ethyl acetate, make binder solution; Under (d), whipped state, heated suspension liquid to 50 DEG C ~ 60 DEG C (50 DEG C, 52 DEG C, 54 DEG C, 56 DEG C, 58 DEG C, 60 DEG C can be selected), binder solution is slowly at the uniform velocity added after in suspension, binder solution adds, continue to be heated to 65 DEG C ~ 75 DEG C (65 DEG C, 67 DEG C, 69 DEG C, 71 DEG C, 73 DEG C, 75 DEG C can be selected), open vacuum system, the top of reactor inner suspension liquid is vacuumized; E (), binder solution add after, solution in reactor is continued be warming up to 75 DEG C ~ 80 DEG C (can select 75 DEG C, 77 DEG C, 78 DEG C, 80 DEG C etc.), after ethyl acetate is all evaporated, solution in reactor is cooled to 30 DEG C ~ 40 DEG C (30 DEG C, 32 DEG C, 34 DEG C, 36 DEG C, 38 DEG C, 40 DEG C can be selected), stops vacuumizing; (f), by filter cloth, the solution in reactor is filtered, and filtering medium to be washed; (g), by washing after filtering medium fully dry, obtain the powder charge of detonator second.When being added in suspension by binder solution, be the speed controlling to add by observing the granulation progress of Cyclotrimethylene trinitramine, after making solution add end, Cyclotrimethylene trinitramine granulation completes.Or adopt 400 ~ 500ml/min(can select 400 ml/min, 420 ml/min, 440 ml/min, 460 ml/min, 480 ml/min, 500 ml/min) the speed that adds binder solution is added in suspension.Methyl methacrylate and ethyl acetate mass ratio are 1:4 ~ 1:9.Reactor adopts tablets press.Dried product is screened by screen cloth.Adding quality in product after screening is that Cyclotrimethylene trinitramine quality 0.1% ~ 0.2%(can select 0.1%, 0.12%, 0.14%, 0.16%, 0.18%, 0.2% etc.) graphite, and to mix.
Tablets press is widely used in fusing point (softening temperature) within 300 DEG C at chemical field, needs all kinds of materials of condensation granulation; Tablets press top can connect pumped vacuum systems, and middle part is connected with pipeline, and can inject solution in tablets press, bottom has drain hole, and inside is provided with whipping device.To keep stirring to solution in blowing process, mutually lump to prevent the Cyclotrimethylene trinitramine particle after crystallization; The speed that adds of binder solution can be adjusted to 400 ~ 500ml/min during production, the product particle size size that under this speed, crystallization goes out meets processing requirement, and is evenly distributed; Methyl methacrylate and ethyl acetate mass ratio are 1:4 ~ 1:9, to meet the requirement of production efficiency and technique.When opening vacuum system extraction ethyl acetate, can judge whether ethyl acetate is exhausted substantially by the weight of the ethyl acetate of extracting out; Dried product is part caking sometimes, adopts filter screen to filter product, pulverizes to make caking; Can also graphite be added in product after filtration and mix; Graphite coat, on the surface of product, can improve the free-running property of product further.
Claims (10)
1. a detonator second powder charge, it is characterized in that, adopt following technique to make: (a), choose Cyclotrimethylene trinitramine and polymethylmethacrylate, with the two gross weight for benchmark, Cyclotrimethylene trinitramine is 98.0% ~ 99.0%, and polymethylmethacrylate is 1.0% ~ 2.0%; (b), be that the water of Cyclotrimethylene trinitramine and polymethylmethacrylate gross weight 1.5 ~ 2 times adds in reactor by weight, and Cyclotrimethylene trinitramine to be also added in reactor, to stir and make suspension; (c), polymethylmethacrylate is fully dissolved in ethyl acetate, make binder solution; D, under (), whipped state, heated suspension liquid to 50 DEG C ~ 60 DEG C, slowly at the uniform velocity adds binder solution in suspension, after binder solution adds, continues to be heated to 65 DEG C ~ 75 DEG C, open vacuum system, vacuumize the top of reactor inner suspension liquid; E (), binder solution add after, the solution in reactor can be continued to be warming up to 75 DEG C ~ 80 DEG C, after ethyl acetate is all evaporated, the solution in reactor is cooled to 30 DEG C ~ 40 DEG C, stop vacuumizing; (f), by filter cloth, the solution in reactor is filtered, and filtering medium to be washed; (g), by washing after filtering medium fully dry, obtain the powder charge of detonator second.
2. detonator second powder charge as claimed in claim 1, is characterized in that, when being added in suspension by binder solution, be the speed that granulation progress by observing Cyclotrimethylene trinitramine controls to add, after making solution add end, Cyclotrimethylene trinitramine granulation completes.
3. detonator second powder charge as claimed in claim 1, it is characterized in that, the speed that adds adopted when binder solution being added suspension is 400 ~ 500ml/min.
4. the detonator second powder charge as described in claim 1 or 2 or 3, is characterized in that, described polymethylmethacrylate and ethyl acetate mass ratio are 1:4 ~ 1:9.
5. the detonator second powder charge as described in claim 1 or 2 or 3, is characterized in that, described reactor is tablets press.
6. detonator second powder charge as claimed in claim 4, it is characterized in that, described reactor is tablets press.
7. the detonator second powder charge as described in claim 1 or 2 or 3, be is characterized in that, screened dried product by screen cloth.
8. detonator second powder charge as claimed in claim 4, be is characterized in that, screened dried product by screen cloth.
9. detonator second powder charge as claimed in claim 5, be is characterized in that, screened dried product by screen cloth.
10. detonator second powder charge as claimed in claim 7, is characterized in that, add the graphite that quality is Cyclotrimethylene trinitramine quality 0.1% ~ 0.2%, and mix in the product after screening.
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|---|---|---|---|
| CN201210354498.2A CN102887804B (en) | 2012-09-22 | 2012-09-22 | Second-pass propellant for detonator |
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|---|---|---|---|
| CN201210354498.2A CN102887804B (en) | 2012-09-22 | 2012-09-22 | Second-pass propellant for detonator |
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| CN102887804A CN102887804A (en) | 2013-01-23 |
| CN102887804B true CN102887804B (en) | 2015-07-15 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051346A (en) * | 1989-10-30 | 1991-05-15 | 西安近代化学研究所 | High polymer bonded explosive for common perforating bullet |
| CN101450973A (en) * | 2007-11-28 | 2009-06-10 | 郭晴晴 | Synthetic method of nano SiO2/PMMA |
| CN101633499A (en) * | 2009-06-25 | 2010-01-27 | 上海理工大学 | PAN-base carbon hollow nanospheres preparation method |
| CN101680600A (en) * | 2007-04-05 | 2010-03-24 | 巴斯夫欧洲公司 | Gas pressure container comprising a mixture containing an organometallic skeletal material, and a pcm device |
-
2012
- 2012-09-22 CN CN201210354498.2A patent/CN102887804B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051346A (en) * | 1989-10-30 | 1991-05-15 | 西安近代化学研究所 | High polymer bonded explosive for common perforating bullet |
| CN101680600A (en) * | 2007-04-05 | 2010-03-24 | 巴斯夫欧洲公司 | Gas pressure container comprising a mixture containing an organometallic skeletal material, and a pcm device |
| CN101450973A (en) * | 2007-11-28 | 2009-06-10 | 郭晴晴 | Synthetic method of nano SiO2/PMMA |
| CN101633499A (en) * | 2009-06-25 | 2010-01-27 | 上海理工大学 | PAN-base carbon hollow nanospheres preparation method |
Non-Patent Citations (2)
| Title |
|---|
| 刘太奇,操彬彬.《物理法制备微胶囊无机芯相变材料及其表征》.《新技术新工艺》.2010,(第3期),第81-84页. * |
| 祝爱兰,钟宏.悬浮聚合法制取不同分子量级别的聚甲基丙烯酸甲酯.《应用化工》.2001,第30卷(第5期),第21-23页. * |
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