CN110937963A - Low-detonation-velocity mixed explosive and preparation method thereof - Google Patents
Low-detonation-velocity mixed explosive and preparation method thereof Download PDFInfo
- Publication number
- CN110937963A CN110937963A CN201911258765.4A CN201911258765A CN110937963A CN 110937963 A CN110937963 A CN 110937963A CN 201911258765 A CN201911258765 A CN 201911258765A CN 110937963 A CN110937963 A CN 110937963A
- Authority
- CN
- China
- Prior art keywords
- explosive
- low
- detonation
- velocity
- mixed explosive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
- C06B23/005—Desensitisers, phlegmatisers
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B27/00—Compositions containing a metal, boron, silicon, selenium or tellurium or mixtures, intercompounds or hydrides thereof, and hydrocarbons or halogenated hydrocarbons
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention provides a low-detonation-velocity mixed explosive and a preparation method thereof, belonging to the field of military mixed explosives, wherein the low-detonation-velocity mixed explosive comprises the following components in percentage by mass: 20-30% of single-substance explosive, 40-60% of binder, 2-5% of insensitive agent and 10-25% of aluminum powder. The invention also discloses a preparation method of the explosive. The low detonation velocity mixed explosive has lower mechanical sensitivity and can be used as an explosion throwing explosive, a seismic source explosive for seismic exploration and the like.
Description
Technical Field
The invention belongs to the technical field of military mixed explosives, and particularly relates to a low-detonation-velocity mixed explosive and a preparation method thereof.
Background
The low-detonation-velocity explosive is an explosive with the detonation velocity of about 1500-3000 m/s. The low detonation velocity explosive is widely applied to civil use and military use due to the characteristics of low detonation velocity, low detonation pressure and low brisance, for example, the low detonation velocity explosive is mainly used for throwing and spreading the explosive in a central tube of a warhead of a shrapnel and other throwers for charging in the military use, and is mainly used for seismic exploration and metal explosion processing in the civil use. Aiming at the performance requirements of the throwing and spreading of the central tube on low brisance, small critical diameter and the like of the low detonation velocity explosive, the low detonation velocity explosive is generally formed by mechanically and uniformly mixing a high explosive and a density regulator in a certain proportion, and the density regulator can be a substance with micropores or light micro powder particles. The common inert density regulator comprises white carbon black, wood powder, carbon powder, vermiculite powder, expanded perlite powder and the like. The density regulator materials generally have the capability of diluting the RDX high explosive (namely the reduction degree of the detonation velocity of the mixed explosive), the maximum addition amount is allowed to be within 30 percent, and the high explosive RDX content in the formula (about 70 percent) causes higher production cost of the mixed explosive, poor safety of the mixed explosive and higher mechanical sensitivity, and brings certain safety risk to practical use.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the low-detonation-velocity mixed explosive and the preparation method thereof.
The technical scheme of the invention is that the low detonation velocity mixed explosive comprises the following components in percentage by mass: 20-30% of single-substance explosive, 40-60% of binder, 2-5% of insensitive agent and 10-25% of aluminum powder.
Further, the elementary explosive is one or a combination of more of RDX, FOX-7 and LLM-105.
Further, the binder is PTFE or PVC.
Further, the desensitizer is one or more of paraffin, graphite, calcium stearate, etc.
The invention also provides a preparation method of the low-detonation-velocity mixed explosive, which comprises the following steps:
step (1), weighing the following raw materials in percentage by mass: 20-30% of single-substance explosive, 40-60% of binder, 2-5% of insensitive agent and 10-25% of aluminum powder;
step (2), adding the single explosive, the adhesive and the insensitive agent into an acoustic resonance mixer, setting the acceleration to be 20-40 g, and mixing for 15-20 min;
and (3) adding aluminum powder into an acoustic resonance mixer, setting the acceleration to be 20-40 g, and mixing for 10-20 min to prepare the mixed explosive with uniform components and low mechanical sensitivity.
Compared with the prior art, the invention has the following beneficial effects:
1) the binder in the formula of the low-detonation-velocity mixed explosive has a good effect of reducing the detonation velocity of the elemental explosive, and can obviously reduce the content of the elemental explosive compared with the low-detonation-velocity explosive adopting the inert density regulators of white carbon black, wood powder, carbon powder and expanded perlite powder in the prior art;
2) the low detonation velocity mixed explosive disclosed by the invention is high in safety and lower in mechanical sensitivity;
3) compared with the conventional mixing preparation method, the acoustic resonance mixing preparation method has the advantages of high mixing efficiency and good mixing uniformity.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments in order to make the present invention better understood by those skilled in the art.
Example 1
A low detonation velocity mixed explosive is provided, and the explosive formula is shown in a table 1:
TABLE 1 explosive formulations
The preparation method of the low-detonation-velocity mixed explosive comprises the following steps:
step (1): weighing the raw materials according to the formula in the table 1, wherein the total mass is 200 g;
step (2): adding RDX, PTFE and graphite into a 2L acoustic resonance mixer, setting the acceleration as 20g, and mixing for 20 min;
and (3): the Al acoustic resonance mixer was set to have an acceleration of 20g and a mixing time of 10 min.
The prepared product was subjected to a performance test, the test results being as follows:
the mixed explosive prepared by the embodiment of the invention has the detonation velocity of 2640m/s (the density of 1.97 g/cm)3) Impact sensitivity (10kg,25cm): 12%, friction sensitivity (3.92MPa,90 °): 8 percent.
Example 2
A low detonation velocity blended explosive having a formulation as set forth in table 2:
TABLE 2 explosive formulations
The preparation method of the low-detonation-velocity mixed explosive comprises the following steps:
step (1): weighing the raw materials according to the formula shown in Table 2, wherein the total mass is 200 g;
step (2): adding RDX, FOX-7, PTFE and graphite into a 2L acoustic resonance mixer, setting the acceleration as 30g, and mixing for 15 min;
and (3): in the Al acoustic resonance mixer, the acceleration was set at 30g, and the mixing time was 10 min.
The prepared product was subjected to a performance test, the test results being as follows:
the mixed explosive prepared by the embodiment of the invention has a detonation velocity of 2510m/s (density of 1.85 g/cm)3) Impact sensitivity (10kg,25cm): 4%, friction sensitivity (3.92MPa,90 °): 8 percent.
Example 3
A low detonation velocity blended explosive is provided, the formulation of which is shown in table 3:
TABLE 3 explosive formulations
The preparation method of the low-detonation-velocity mixed explosive comprises the following steps:
step (1): weighing the raw materials according to the formula shown in Table 2, wherein the total mass is 200 g;
step (2): adding LLM-105, PVC and calcium stearate into a 2L acoustic resonance mixer, setting the acceleration to be 40g, and mixing for 10 min;
and (3): in the Al acoustic resonance mixer, the acceleration was set at 40g, and the mixing time was 10 min.
The prepared product was subjected to a performance test, the test results being as follows:
the mixed explosive prepared by the embodiment of the invention has the detonation velocity of 2760m/s (the density of 1.75 g/cm)3) Impact sensitivity (10kg,25cm): 0%, friction sensitivity (3.92MPa,90 °):0 percent.
The above description is only for the best mode of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Those skilled in the art will appreciate that the invention may be practiced without these specific details.
Claims (5)
1. A low-detonation-velocity mixed explosive is characterized by comprising the following components in percentage by mass:
20-30% of single-substance explosive, 40-60% of binder, 2-5% of insensitive agent and 10-25% of aluminum powder.
2. The low detonation velocity mixed explosive of claim 1, wherein the elemental explosive is a combination of one or more of RDX, FOX-7, LLM-105.
3. A low detonation velocity mixed explosive according to claim 1 characterised in that the binder is PTFE or PVC.
4. The low detonation velocity mixed explosive of claim 1, wherein the desensitizer is one or a combination of more than one of paraffin, graphite, calcium stearate, and the like.
5. A method of preparing a low detonation velocity mixed explosive according to any one of claims 1 to 4, characterised in that it includes the steps of:
s1, weighing the following raw materials in percentage by mass: 20-30% of single-substance explosive, 40-60% of binder, 2-5% of insensitive agent and 10-25% of aluminum powder;
s2, adding the single explosive, the adhesive and the insensitive agent into an acoustic resonance mixer, wherein the acceleration is set to be 20-40 g, and the mixing time is 15-20 min.
S3, adding aluminum powder into an acoustic resonance mixer, setting the acceleration to be 20-40 g, and mixing for 10-20 min to obtain the mixed explosive with uniform components and low mechanical sensitivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258765.4A CN110937963B (en) | 2019-12-10 | 2019-12-10 | Low-detonation-velocity mixed explosive and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258765.4A CN110937963B (en) | 2019-12-10 | 2019-12-10 | Low-detonation-velocity mixed explosive and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110937963A true CN110937963A (en) | 2020-03-31 |
| CN110937963B CN110937963B (en) | 2021-07-20 |
Family
ID=69910330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911258765.4A Active CN110937963B (en) | 2019-12-10 | 2019-12-10 | Low-detonation-velocity mixed explosive and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110937963B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114539011A (en) * | 2022-02-21 | 2022-05-27 | 张延松 | Safe and efficient high-energy expanding agent and preparation method and application thereof |
| CN115322063A (en) * | 2022-08-11 | 2022-11-11 | 湖北航天化学技术研究所 | High polymer bonded explosive and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4034675A (en) * | 1970-08-20 | 1977-07-12 | The United States Of America As Represented By The Secretary Of The Army | Catalysts - containing ablative resonance suppressors |
| CN103254026A (en) * | 2013-05-16 | 2013-08-21 | 中国工程物理研究院化工材料研究所 | Compact aluminum-containing explosive and preparation method thereof |
| CN110343020A (en) * | 2019-08-12 | 2019-10-18 | 中国工程物理研究院化工材料研究所 | A kind of preparation method of Nanometallization explosive |
-
2019
- 2019-12-10 CN CN201911258765.4A patent/CN110937963B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4034675A (en) * | 1970-08-20 | 1977-07-12 | The United States Of America As Represented By The Secretary Of The Army | Catalysts - containing ablative resonance suppressors |
| CN103254026A (en) * | 2013-05-16 | 2013-08-21 | 中国工程物理研究院化工材料研究所 | Compact aluminum-containing explosive and preparation method thereof |
| CN110343020A (en) * | 2019-08-12 | 2019-10-18 | 中国工程物理研究院化工材料研究所 | A kind of preparation method of Nanometallization explosive |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114539011A (en) * | 2022-02-21 | 2022-05-27 | 张延松 | Safe and efficient high-energy expanding agent and preparation method and application thereof |
| WO2023155354A1 (en) * | 2022-02-21 | 2023-08-24 | 张延松 | Safe and efficient high-energy expanding agent, and preparation method therefor and use thereof |
| CN115322063A (en) * | 2022-08-11 | 2022-11-11 | 湖北航天化学技术研究所 | High polymer bonded explosive and preparation method thereof |
| CN115322063B (en) * | 2022-08-11 | 2024-01-02 | 湖北航天化学技术研究所 | Polymer bonded explosive and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110937963B (en) | 2021-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106588520B (en) | A kind of insensitiveness pressed explosives tested by slow cook-off | |
| CN110937963B (en) | Low-detonation-velocity mixed explosive and preparation method thereof | |
| Wu et al. | Properties and application of a novel type of glycidyl azide polymer (GAP)‐modified nitrocellulose powders | |
| US5034073A (en) | Insensitive high explosive | |
| KR940004638B1 (en) | Composite powder of condensed type using the adhesive agent with ethylene acetic vinyl resin | |
| CN114262249B (en) | Composite explosive particles and preparation method thereof | |
| EP1025065A1 (en) | High performance explosive formulations and articles containing 2,4,6,8,10,12-hexanitrohexaazaisowurtzitane | |
| US3354010A (en) | Flexible explosive containing rdx and/or rmx and process therefor | |
| US4944816A (en) | Ultra-ultrahigh burning rate composite modified double-base propellants containing porous ammonium perchlorate | |
| CN111004074B (en) | Smokeless and sulfur-free firecracker nitrate medicament and preparation method thereof | |
| US2425854A (en) | Propellent powder | |
| CN112592246A (en) | Insensitive explosive | |
| US3418184A (en) | Smoke producing propellant | |
| CN106631642A (en) | High-energy mixed explosive containing titanium powder and preparation method of high-energy mixed explosive | |
| JPH0859384A (en) | Explosives | |
| Fung et al. | Further development and optimization of IM ingredients at Holston Army Ammunition Plant | |
| US20170152196A1 (en) | Ignition compositions, and preparations and uses thereof | |
| CN111018640A (en) | Stabilizing treatment and preparation method of high-explosive-sound smokeless sulfur-free firecracker nitrate medicament | |
| CN107011103B (en) | Porous granular ammonium nitrate fuel oil explosive additive and application thereof | |
| CN108440225A (en) | A kind of pyrotechnic composition deterrent and preparation method thereof | |
| US3317361A (en) | Flexible plasticized explosive of cyclonitramine and nitrocellose and process therefor | |
| KR20120017328A (en) | High density and high performance plastic bonded explosive and the fabrication method thereof | |
| CN111004075B (en) | Aluminum-containing explosive composition | |
| CN111138236B (en) | 1,2, 4-triazole nitrate coated boron-magnesium composite metal powder fuel and preparation method thereof | |
| CN108976095B (en) | C L-20 base pressure-loaded high-energy insensitive explosive and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |