CN102887804A - Second-pass propellant for detonator - Google Patents
Second-pass propellant for detonator Download PDFInfo
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- CN102887804A CN102887804A CN2012103544982A CN201210354498A CN102887804A CN 102887804 A CN102887804 A CN 102887804A CN 2012103544982 A CN2012103544982 A CN 2012103544982A CN 201210354498 A CN201210354498 A CN 201210354498A CN 102887804 A CN102887804 A CN 102887804A
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- detonator
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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 the explosive field, specifically a kind of detonator second powder charge.
Background technology
For many years, China adopt more Cyclotrimethylene trinitramine as the powder charge of detonator second starting material, process, make it to be suitable for the second powder charge of detonator.The Cyclotrimethylene trinitramine chemical formula is (CH
2NNO
2)
3, be a kind of clear crystal, be usually used in the explosive field, be the extremely strong powerful explosive of a kind of explosive power.Cyclotrimethylene trinitramine is water insoluble, but more soluble in ring ethyl ketone, oil of mirbane, second triol and the ethyl acetate of heating.Present most detonator factory often adopts craft or mechanically mixing explained hereafter, causes in the production process dust larger, and product granularity is inhomogeneous, and the product free-running property is poor, easily causes detonator neglected loading or less loaded phenomenon, causes in the product scrap rate higher.
Summary of the invention
The present invention provides the second powder charge of a kind of detonator for solving the technical problem that dust is large in the second powder charge process of producing product that uses in the present detonator, product granularity is inhomogeneous, free-running property is poor.
The present invention realizes by the following technical solutions: the second powder charge of a kind of detonator, adopt following technique to make: (a), choose Cyclotrimethylene trinitramine and methyl methacrylate, take the two gross weight as benchmark, Cyclotrimethylene trinitramine is 98.0% ~ 99.0%, and methyl methacrylate is 1.0% ~ 2.0%; (b), be that the water of 1.5 ~ 2 times of Cyclotrimethylene trinitramine and methyl methacrylate gross weights adds in the reactor with weight, and Cyclotrimethylene trinitramine also is added in the reactor, stir and make suspension; (c), methyl methacrylate fully is dissolved in the ethyl acetate, make binder solution; (d), under the whipped state, add hot suspension to 50 ℃ ~ 60 ℃, binder solution is slowly at the uniform velocity added after binder solution adds in the suspension, continue to be heated to 65 ℃ ~ 75 ℃, open vacuum system, the top of reactor inner suspension liquid is vacuumized; (e), after binder solution adds, the solution in the reactor is continued to be warming up to 75 ℃ ~ 80 ℃, all after the evaporation, the solution in the reactor is cooled to 30 ℃ ~ 40 ℃ until ethyl acetate, stops to vacuumize; (f), by filter cloth the solution in the reactor is filtered, and filtering medium is washed; (g), the filtering medium after will washing is fully dry, obtains detonator second powder charge.When adding binder solution in the suspension, be the speed of controlling adding by the granulation progress of observing Cyclotrimethylene trinitramine, after solution being added finish, the Cyclotrimethylene trinitramine granulation is finished.
Described Cyclotrimethylene trinitramine and methyl methacrylate are to buy on the market and obtain; The 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 is added to the water, makes suspension through stirring; The mass ratio of Cyclotrimethylene trinitramine and methyl methacrylate can guarantee that the product free-running property of preparing is good and do not affect Cyclotrimethylene trinitramine as the effect of explosive.The quality of water is Cyclotrimethylene trinitramine and methyl methacrylate gross weight 1.5 ~ 2 times, in the suspension that guarantees to make Cyclotrimethylene trinitramine be evenly distributed and density moderate, guarantee carrying out smoothly of crystallisation process; The amount of ethyl acetate is abundant, guarantees that methyl methacrylate fully is dissolved in the ethyl acetate; When reactor suspension is heated to 65 ℃ ~ 75 ℃, open vacuum system, the top of reactor inner suspension liquid is vacuumized, slowly add binder solution in the suspension simultaneously; The dropping process will stir solution, guarantees that the Cyclotrimethylene trinitramine in the solution keeps suspended state; After binder solution adds, Cyclotrimethylene trinitramine is dissolved in the ethyl acetate gradually, and because solution temperature is higher, ethyl acetate is constantly evaporated, the continuous crystallization of Cyclotrimethylene trinitramine in this course, and the surface of Cyclotrimethylene trinitramine is also constantly separated out and be coated on to the methyl methacrylate in the ethyl acetate, and this process is called granulation process; This method is called water suspension method.Suspension temperature rises to 65 ℃ ~ 75 ℃, is conducive to the evaporation of ethyl acetate, and opening vacuum system can be with the ethyl acetate extraction still of evaporation.Length velocity relation in the binder solution adding suspension is to the globule size of crystallized product and the homogeneity of size-grade distribution, add excessive velocities, the crystallized product granularity can be big or small inhomogeneous, and waste product is more, can not satisfy the requirement of product granularity, therefore add fashionable requirement and slowly add; The general speed of controlling aborning adding by the granulation progress of observing Cyclotrimethylene trinitramine, after guaranteeing to make solution to add to finish, Cyclotrimethylene trinitramine also basic granulation is finished, and satisfies the related process requirement to guarantee the Cyclotrimethylene trinitramine granularity that crystallization goes out.Reactor is a kind of container as physics or chemical reaction, by structure design and the parameter configuration to container, realizes the function that is mixed of heating, evaporation, cooling and the low high speed of processing requirement.Granulation process is warming up to 75 ℃ ~ 80 ℃ with the temperature in the reactor after finishing, and is beneficial to the evaporation of residual acetic acid ethyl ester; After the evaporation of ethyl acetate fully, the temperature in the reactor is reduced to 30 ℃ ~ 40 ℃, prevents that the surface of having separated out is coated with the Cyclotrimethylene trinitramine particle from caking of methyl methacrylate; Stop simultaneously vacuumizing, the solution in the reactor is taken out; Afterwards the solution that takes out is filtered by filter cloth, and water washs the filtering medium after filtering, again the product after the washing is carried out abundant drying, obtain detonator second powder charge.The products obtained therefrom size-grade distribution is that 20 orders ~ 40 purpose particles account for about 30% of product, and 40 orders ~ 60 orders account for about 30%, and 60 orders ~ 100 orders account for 30%, and size-grade distribution is very even.Table 1 is the correlated performance index of product of the present invention, the requirement of the defined that all is 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, and the second powder charge of preparation detonator is from improving in essence detonator two road charge processes; The product granularity of producing is even, and has avoided the problem that has dust in the mechanical mill process; Be coated with one deck methyl methacrylate on the surface of Cyclotrimethylene trinitramine, greatly improved the free-running property of Cyclotrimethylene trinitramine.The correlated performance index 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, consistency is good, shock sensitivity is moderate, is very suitable for the second powder charge for plain detonator.
Embodiment
The second powder charge of a kind of detonator, adopt following technique to make: (a), choose Cyclotrimethylene trinitramine and methyl methacrylate, take the two gross weight as 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. with weight) doubly water adds in the reactor, and Cyclotrimethylene trinitramine also is added in the reactor, stir and make suspension; (c), methyl methacrylate fully is dissolved in the ethyl acetate, make binder solution; (d), under the whipped state, add hot suspension to 50 ℃ ~ 60 ℃ (can select 50 ℃, 52 ℃, 54 ℃, 56 ℃, 58 ℃, 60 ℃), binder solution is slowly at the uniform velocity added after binder solution adds in the suspension, continue to be heated to 65 ℃ ~ 75 ℃ (can select 65 ℃, 67 ℃, 69 ℃, 71 ℃, 73 ℃, 75 ℃), open vacuum system, the top of reactor inner suspension liquid is vacuumized; (e), after binder solution adds, solution in the reactor is continued to be warming up to 75 ℃ ~ 80 ℃ (can select 75 ℃, 77 ℃, 78 ℃, 80 ℃ etc.), after ethyl acetate is all evaporated, solution in the reactor is cooled to 30 ℃ ~ 40 ℃ (can select 30 ℃, 32 ℃, 34 ℃, 36 ℃, 38 ℃, 40 ℃), stops to vacuumize; (f), by filter cloth the solution in the reactor is filtered, and filtering medium is washed; (g), the filtering medium after will washing is fully dry, obtains detonator second powder charge.When adding binder solution in the suspension, be the speed of controlling adding by the granulation progress of observing Cyclotrimethylene trinitramine, after solution being added finish, the Cyclotrimethylene trinitramine granulation is finished.Perhaps adopt 400 ~ 500ml/min(can select 400 ml/min, 420 ml/min, 440 ml/min, 460 ml/min, 480 ml/min, 500 ml/min) adding speed binder solution is added in the suspension.Methyl methacrylate and ethyl acetate mass ratio are 1:4 ~ 1:9.Reactor adopts tablets press.Dried product is screened by screen cloth.Add quality in the product after screening and be Cyclotrimethylene trinitramine quality 0.1% ~ 0.2%(and can select 0.1%, 0.12%, 0.14%, 0.16%, 0.18%, 0.2% etc.) graphite, and mix.
Tablets press is widely used in fusing point (softening temperature) in 300 ℃ at chemical field, needs all kinds of materials of condensation granulation; Tablets press top can connect pumped vacuum systems, and the middle part is connected with pipeline, can inject solution in tablets press, and the bottom has drain hole, and inside is provided with whipping device.To keep stirring to solution in the blowing process, mutually lump to prevent the Cyclotrimethylene trinitramine particle behind the crystallization; The adding speed of binder solution can be adjusted into 400 ~ 500ml/min during production, the product globule size that crystallization goes out under this speed satisfies processing requirement, and is evenly distributed; Methyl methacrylate and ethyl acetate mass ratio are 1:4 ~ 1:9, to satisfy the requirement of production efficiency and technique.When opening vacuum system and extracting ethyl acetate, can judge ethyl acetate by the weight of the ethyl acetate of extracting out and whether substantially be exhausted; Dried product is the part caking sometimes, adopts filter screen that product is filtered, so that caking is pulverized; Add graphite in can also the product after filtration and mix; Graphite is coated on the surface of product, can further improve the free-running property of product.
Claims (9)
1. a detonator second powder charge is characterized in that, adopts following technique to make: (a), choose Cyclotrimethylene trinitramine and methyl methacrylate, take the two gross weight as benchmark, Cyclotrimethylene trinitramine is 98.0% ~ 99.0%, and methyl methacrylate is 1.0% ~ 2.0%; (b), be that the water of 1.5 ~ 2 times of Cyclotrimethylene trinitramine and methyl methacrylate gross weights adds in the reactor with weight, and Cyclotrimethylene trinitramine also is added in the reactor, stir and make suspension; (c), methyl methacrylate fully is dissolved in the ethyl acetate, make binder solution; (d), under the whipped state, add hot suspension to 50 ℃ ~ 60 ℃, binder solution is slowly at the uniform velocity added in the suspension, after binder solution adds, continue to be heated to 65 ℃ ~ 75 ℃, open vacuum system, the top of reactor inner suspension liquid is vacuumized; (e), after binder solution adds, the solution in the reactor can be continued be warming up to 75 ℃ ~ 80 ℃, all after the evaporation, the solution in the reactor is cooled to 30 ℃ ~ 40 ℃ until ethyl acetate, stops to vacuumize; (f), by filter cloth the solution in the reactor is filtered, and filtering medium is washed; (g), the filtering medium after will washing is fully dry, obtains detonator second powder charge.
2. detonator as claimed in claim 1 second powder charge is characterized in that, when adding binder solution in the suspension, is the speed of controlling adding by the granulation progress of observing Cyclotrimethylene trinitramine, and after solution being added finish, the Cyclotrimethylene trinitramine granulation is finished.
3. detonator as claimed in claim 1 second powder charge is characterized in that, the adding speed that adopts when binder solution is added suspension is 400 ~ 500ml/min.
4. such as claim 1 or 2 or 3 described detonator second powder charges, it is characterized in that described methyl methacrylate and ethyl acetate mass ratio are 1:4 ~ 1:9;
Such as claim 1 or 2 or 3 described detonator second powder charges, it is characterized in that described reactor is tablets press.
5. detonator as claimed in claim 4 second powder charge is characterized in that, described reactor is tablets press.
6. such as claim 1 or 2 or 3 described detonator second powder charges, it is characterized in that, dried product is screened by screen cloth.
7. detonator as claimed in claim 4 second powder charge is characterized in that, dried product is screened by screen cloth.
8. detonator as claimed in claim 5 second powder charge is characterized in that, dried product is screened by screen cloth.
9. detonator as claimed in claim 7 second powder charge is characterized in that, adding quality in the product after screening is the graphite of Cyclotrimethylene trinitramine quality 0.1% ~ 0.2%, and mixes.
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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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| CN102887804B CN102887804B (en) | 2015-07-15 |
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Citations (4)
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|---|---|---|---|---|
| CN1051346A (en) * | 1989-10-30 | 1991-05-15 | 西安近代化学研究所 | High polymer cemented explosive for common piercing 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 cemented explosive for common piercing 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》, no. 3, 25 March 2010 (2010-03-25), pages 81 - 84 * |
| 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》, vol. 30, no. 5, 30 October 2001 (2001-10-30), pages 21 - 23 * |
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