CN104909967A - Low-density explosive and preparation method thereof - Google Patents
Low-density explosive and preparation method thereof Download PDFInfo
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- CN104909967A CN104909967A CN201510266724.5A CN201510266724A CN104909967A CN 104909967 A CN104909967 A CN 104909967A CN 201510266724 A CN201510266724 A CN 201510266724A CN 104909967 A CN104909967 A CN 104909967A
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Abstract
The invention discloses a low-density explosive and a preparation method thereof. The invention relates to the technical field of mixed explosives. The low-density explosive is composed of waste explosive, a low-density material and a binding agent. According to the invention, the waste explosive is adopted as a main raw material, such that waste explosive recycling is realized. The low-density explosive preparation method is simple and feasible, and is convenient to operate.
Description
Technical field
The present invention relates to a kind of low density explosive and method thereof, be applicable to explosive welding, explosion forming.
Technical background
Press-fiting non-aluminum composition is the high explosive that in pressed explosive, a class has higher explosion velocity, main products have A-IX-I, 8701, JO-6, JO-8,10#-159, JH-14 etc., Cyclotrimethylene trinitramine in explosive, octogen content are greater than 90%, are a kind of high explosives that economic worth is higher.Press-fit non-aluminum composition and there is higher explosion velocity, therefore loaded in a large number in high explosive anti-tank cartridge warhead, store the expiring successively of the time limit along with high explosive anti-tank cartridge uses, waste and oldly in a large number press-fit non-aluminum composition and have pending.At present, China opens with destroying method for the process majority of waste and old explosive wastewater, owing to press-fiting the incomplete combustion of non-aluminum composition in burning process, can produce multiple oxynitride, oxycarbide, to environment; Meanwhile, the waste and old explosive of employing burning method process is also the waste to resource.Patent CN 201110210789.X provides a kind of method JH-14 explosive being prepared into low density explosive.But this method prepares low density explosive need through the solidification of 60h, and the cycle is oversize, and in preparation process, adopt the isocyanic ester of severe toxicity as cure-crosslinking agent, to human body and environment, there is larger harm; Low density explosive after solidification can not change shape according to concrete environment for use.
Summary of the invention
For solving shortcomings and deficiencies of the prior art, the invention provides method and the finished product that low density explosive prepared by the waste and old explosive of a kind of simple and easy to do employing.
Low density explosive percent mass provided by the invention is composed as follows: 94% ~ 75% waste and old explosive, 5% ~ 20% low density material, 1% ~ 5% binding agent, wherein waste and old explosive be A-IX-I, 8701, the explosive such as JO-6, JO-8,10#-159, JH-14, and be ground into the particle that granularity is not more than 1mm.Low density material is silicon dioxide hollow microsphere, glass hollow microballoon, and density is not more than 0.1gcm
-3.Binding agent is ethylene-vinyl acetate (EVA) or polyisobutene (PIB) etc.
Preparation method of the present invention, concrete steps are as follows:
(1) binding agent is become binder solution with solvent according to the proportional arrangement of 1kg:5L ~ 10L; (2) binder solution is poured into 70 DEG C of kneaders, add low density material and waste and old explosive, start kneader, stirring paddle of kneading machine speed setting is 30rpm, mixing 30min; (3) set vacuum tightness as-0.05MPa, start vacuum system, keep 20min; (4) discharging, namely granulation post-drying of sieving obtains product.
Advantage of the present invention: (1) explosive detonation stability is high; (2) explosive preparation method is simple, easy to operate; (3) powder type explosive has excellent free-running property, the powder charge requirement used under meeting various complex environment.
Embodiment
The present invention is described in further detail in conjunction with the embodiments.In embodiment, EVA number-average molecular weight used is 3500-4500, and polyisobutene number-average molecular weight is 10-20 ten thousand.
Embodiment 1
The present embodiment mass percent is as follows: 78% waste and old JO-8 explosive, 20% silicon dioxide hollow microsphere, 2%EVA.
Preparation method is as follows: 20gEVA 150ml sherwood oil dissolves by (1) completely; (2) kneader bath temperature is set as 70 DEG C, EVA solution is poured in kneader, then add the waste and old JO-8 blasting explosive granules of 200g silicon dioxide hollow microsphere and 780g, start kneader, stirring paddle of kneading machine speed setting is 30rpm, mixing 30min; (3) set vacuum tightness as-0.05MPa, start vacuum system, keep 20min; (4) modeling powder filters post-drying and namely obtains product.
Embodiment 2
The mass percent of the present embodiment is as follows: 88% waste and old 8701 explosives, 10% glass hollow microballoon, 2%PIB.
Preparation method is as follows: 20gPIB 150ml ethyl acetate is dissolved by (1) completely; (2) kneader bath temperature is set as 70 DEG C, EVA solution is poured in kneader, then add waste and old 8701 blasting explosive granules of 100g glass hollow microballoon and 880g, start kneader, stirring paddle of kneading machine speed setting is 30rpm, mixing 30min; (3) set vacuum tightness as-0.05MPa, start vacuum system, keep 20min; (4) modeling powder filters post-drying and namely obtains product.
The recovery product of Example 1 and embodiment 2, measures impact sensitivity according to GJB772A-1997 method 601.1, and method 602.1 measures friction sensitivity, and method 402.1 measures tap density, and method 702.1 measures explosion velocity, the results are shown in Table 1.
Table 1 low density explosive performance
| Test event | Embodiment 1 | Embodiment 2 |
| Impact sensitivity, % | 20 | 8 |
| Friction sensitivity, % | 12 | 0 |
| Tap density | 0.35 | 0.48 |
| Explosion velocity, m/s | 3428(ρ＝0.62g·cm -3) | 3772(ρ＝0.75g·cm -3) |
Claims (5)
1. a low density explosive, is characterized in that percent mass is composed as follows: 94% ~ 75% waste and old explosive, 5% ~ 20% low density material, 1% ~ 5% binding agent, and wherein each component percentages sum is 100%.
2. low density explosive according to claim 1, is characterized in that: described waste and old explosive be A-IX-I, 8701, JO-6, JO-8,10#-159 or JH-14, granularity is not more than 1mm.
3. low density explosive according to claim 1, is characterized in that: described low density material is silicon dioxide hollow microsphere or glass hollow microballoon, and density is not more than 0.1gcm
-3.
4. low density explosive according to claim 1, is characterized in that: described binding agent is ethylene-vinyl acetate or polyisobutene.
5. the preparation method of low density explosive according to claim 1, is characterized in that step is as follows:
(1) binding agent is become binder solution with solvent according to the proportional arrangement of 1kg:5L ~ 10L;
(2) poured into by binder solution in 70 DEG C of kneaders, add low density material and waste and old explosive, stirring paddle of kneading machine speed setting is 30rpm, mixing 30min;
(3) set vacuum tightness as-0.05MPa, start vacuum system, keep 20min;
(4) discharging, granulation post-drying of sieving and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510266724.5A CN104909967A (en) | 2015-05-22 | 2015-05-22 | Low-density explosive and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510266724.5A CN104909967A (en) | 2015-05-22 | 2015-05-22 | Low-density explosive and preparation method thereof |
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| CN104909967A true CN104909967A (en) | 2015-09-16 |
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| CN201510266724.5A Pending CN104909967A (en) | 2015-05-22 | 2015-05-22 | Low-density explosive and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108002965A (en) * | 2017-12-21 | 2018-05-08 | 安徽宝泰特种材料有限公司 | A kind of low-density detonating explosive and preparation method thereof |
| CN115180993A (en) * | 2022-06-30 | 2022-10-14 | 中国工程物理研究院化工材料研究所 | Method for recycling explosive cutting waste particles |
| CN115806457A (en) * | 2022-12-14 | 2023-03-17 | 中国工程物理研究院化工材料研究所 | Explosive for high-temperature perforating bullet and preparation method thereof |
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| US2768072A (en) * | 1955-08-15 | 1956-10-23 | Howard J Stark | Method of producing a low density explosive |
| CN102432405A (en) * | 2011-07-26 | 2012-05-02 | 国营红林机械厂 | Low density explosive and preparation method thereof |
| CN103204752A (en) * | 2013-04-10 | 2013-07-17 | 中国工程物理研究院化工材料研究所 | Polymer bonded explosive for missile of common jet hole |
| CN103319289A (en) * | 2013-06-13 | 2013-09-25 | 四川雅化实业集团股份有限公司 | Treatment method of waste colloidal emulsion explosive in porous ammonium nitrate fuel oil explosive |
| CN103396272A (en) * | 2013-07-30 | 2013-11-20 | 四川雅化实业集团股份有限公司 | Method for recycling waste emulsion explosive in rock powder emulsion explosive |
| CN104370668A (en) * | 2014-11-21 | 2015-02-25 | 山西北化关铝化工有限公司 | Rubber explosive for explosion hardening |
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2015
- 2015-05-22 CN CN201510266724.5A patent/CN104909967A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2768072A (en) * | 1955-08-15 | 1956-10-23 | Howard J Stark | Method of producing a low density explosive |
| CN102432405A (en) * | 2011-07-26 | 2012-05-02 | 国营红林机械厂 | Low density explosive and preparation method thereof |
| CN103204752A (en) * | 2013-04-10 | 2013-07-17 | 中国工程物理研究院化工材料研究所 | Polymer bonded explosive for missile of common jet hole |
| CN103319289A (en) * | 2013-06-13 | 2013-09-25 | 四川雅化实业集团股份有限公司 | Treatment method of waste colloidal emulsion explosive in porous ammonium nitrate fuel oil explosive |
| CN103396272A (en) * | 2013-07-30 | 2013-11-20 | 四川雅化实业集团股份有限公司 | Method for recycling waste emulsion explosive in rock powder emulsion explosive |
| CN104370668A (en) * | 2014-11-21 | 2015-02-25 | 山西北化关铝化工有限公司 | Rubber explosive for explosion hardening |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108002965A (en) * | 2017-12-21 | 2018-05-08 | 安徽宝泰特种材料有限公司 | A kind of low-density detonating explosive and preparation method thereof |
| CN115180993A (en) * | 2022-06-30 | 2022-10-14 | 中国工程物理研究院化工材料研究所 | Method for recycling explosive cutting waste particles |
| CN115806457A (en) * | 2022-12-14 | 2023-03-17 | 中国工程物理研究院化工材料研究所 | Explosive for high-temperature perforating bullet and preparation method thereof |
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