CN111517899B - Gas generating agent for high-burning-rate micro gas generator and preparation method thereof - Google Patents
Gas generating agent for high-burning-rate micro gas generator and preparation method thereof Download PDFInfo
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- CN111517899B CN111517899B CN202010596931.8A CN202010596931A CN111517899B CN 111517899 B CN111517899 B CN 111517899B CN 202010596931 A CN202010596931 A CN 202010596931A CN 111517899 B CN111517899 B CN 111517899B
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- agent
- potassium perchlorate
- generating agent
- gas generating
- gas generator
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B31/00—Compositions containing an inorganic nitrogen-oxygen salt
- C06B31/28—Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B29/00—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate
- C06B29/02—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate of an alkali metal
- C06B29/08—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate of an alkali metal with an organic non-explosive or an organic non-thermic component
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B29/00—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate
- C06B29/02—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate of an alkali metal
- C06B29/16—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate of an alkali metal with a nitrated organic compound
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Medicinal Preparation (AREA)
Abstract
The invention discloses a gas generating agent for a high-burning-rate micro gas generator and a preparation method thereof, wherein the gas generating agent comprises the following components in percentage by mass: 68-89% of ammonium nitrate; 5-15% of potassium perchlorate; 5-15% of lead cyanide; the nitrolacquer solution of the adhesive shellac is 1-2 percent, and solves the problems of slow burning rate and low gas production rate of MGG in the prior art.
Description
Technical Field
The invention relates to the technical field of automobile safety devices, in particular to a gas generating agent for a high-burning-rate micro gas generator and a preparation method thereof.
Background
The micro gas generator MGG is an initiating device which can quickly generate high-temperature and high-pressure gas after being activated to realize the functions of pre-tightening a safety belt, bouncing a hood, disconnecting an electric automobile fuse and the like, and the core of the micro gas generator MGG is internally filled with a medicament.
With the development of the automobile industry, the development and production of the miniature, safe, reliable and environment-friendly MGG are the real requirements and the future development trend, and the gas generating agent plays a decisive role in the performance, design and popularization. The existing MGG has the problems of slow burning speed and low gas production rate; therefore, the development of the gas generating agent for MGG, which is safer, low in price, environment-friendly, low in combustion temperature and high in gas yield, meets the market competition requirements and has very important significance.
Disclosure of Invention
The invention provides a gas generating agent for a high-burning-rate miniature gas generator, which solves the problems of slow burning rate and low gas production rate of MGG in the prior art.
In order to solve the technical problem, the invention provides the following technical scheme:
a gas generating agent for a high-burning-rate micro gas generator comprises the following components in percentage by mass:
68-89% of ammonium nitrate;
5-15% of potassium perchlorate;
5-15% of lead cyanide;
1-2% of adhesive.
Preferably, the weight ratio of the potassium perchlorate to the lead cyanide is 1: 1.
preferably, the weight ratio of the ammonium nitrate to the sum of the potassium perchlorate, lead cyanide, binder is 8: 2.
preferably, the binder is an acetone solution of shellac.
The invention also provides a preparation method of the gas generating agent for the high-burning-rate micro gas generator, which comprises the following steps:
(1) preparation of AN AN agent in the form of ammonium nitrate: crushing AN AN raw material ammonium nitrate into 20-30 meshes by using AN extruding crusher, drying and warehousing;
(2) preparation of potassium perchlorate type initiating explosive agent: mixing potassium perchlorate and lead cyanide, adding an adhesive solution, carrying out wet mixing for 30-40 min, drying for 1 hour, then granulating, respectively passing through standard screens of 40 meshes and 20 meshes, taking the undersize product of 40 meshes and the oversize product of 20 meshes, drying and warehousing;
(3) mixing the ammonium nitrate type AN agent and the potassium perchlorate type initiating explosive, and tabletting to obtain the finished product.
Preferably, the binder solution is a 20% shellac nitrolacquer solution by mass fraction.
Preferably, the dosage of the adhesive solution is 40 mL.
Preferably, the weight ratio of the potassium perchlorate to the lead cyanide is 1: 1.
preferably, the weight ratio of the ammonium nitrate type AN agent to the potassium perchlorate type priming agent is 8: 2.
compared with the prior art, the invention has the following advantages:
the formula agent of the scheme burns for less than 4ms, has no residues, improves the safety factor, and has the characteristics of good flame sensitivity, high burning speed, high combustion heat, low toxicity and the like. The content of CO generated by combustion is controlled to be less than 5ppm, the combustion speed is controlled to be less than 4ms and the pressure sensitivity coefficient is controlled to be 0.6 by the weight ratio of the mixed medicament to 2 and the combustion speed ratio of the mixed medicament particles. Lead cyanide is matched with phase-stable potassium perchlorate type initiating explosive as oxidant, ignition performance is improved on the basis of preventing AN phase change, burning speed is improved to 2 times, and gas production is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a P-T test chart of example 1 of the present invention.
FIG. 2 is a graph showing P-T test of comparative example 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not used as limitations of the present invention.
Example 1
1. Preparation of Ammonium Nitrate (AN) type agents: the AN raw material is inspected and processed, crushed to 20-30 meshes by a crushing machine, dried and warehoused;
2. preparing potassium perchlorate type initiating explosive: respectively taking 50g of the treated potassium perchlorate and lead cyanide raw materials, pouring the 50g of the treated potassium perchlorate and lead cyanide raw materials into a stainless steel basin, slowly adding 40ml of a special nitrocellulose lacquer adhesive solution with the concentration of 20 percent, wet-mixing for 30-40 min, drying for 1 hour, then granulating, respectively passing through a standard screen with 40 meshes and 20 meshes, taking the undersize of 40 meshes and the oversize of 20 meshes, drying and warehousing;
3. respectively taking AN and potassium perchlorate type initiating explosive as first and second agents for MGG, and mixing the first and second agents according to the agent particle volume ratio, the total weight ratio and the agent particle combustion speed ratio, wherein the mass ratio of the ammonium nitrate type (AN) agent to the potassium perchlorate type initiating explosive is 8: and 2, controlling the CO content and the burning rate of the gas to be sensitive to the pressure, and carrying out P-T test. The P-T test pattern is shown in FIG. 1.
Examples 2 to 3
The preparation method is the same as example 1, and the use ratio of various materials is shown in Table 1.
Comparative example 1
The preparation method is the same as example 1, and the lead cyanide is omitted. The P-T test pattern is shown in FIG. 2.
TABLE 1
| Ammonium nitrate% | Potassium perchlorate% | Lead cyanide% | Adhesive% | |
| Example 1 | 80 | 9.25 | 9.25 | 1.5 |
| Example 2 | 68 | 15 | 15 | 2 |
| Example 3 | 89 | 5 | 5 | 1 |
| Comparative example 1 | 80 | 16 | 0 | 4 |
The drug standard tests were performed by the following criteria, and the results are shown in tables 2-3:
GJB 2178-1994 booster drug safety performance test method
GJB 737 initiating explosive device medicament test method
TABLE 2 AN Performance index
TABLE 3 Perchloric acid potassium type initiating explosive Performance index
Experiments show that the formula agent of the scheme has the advantages of combustion time less than 4ms, no residue, improved safety coefficient, good flame sensitivity, high combustion speed, high combustion heat, low toxicity and the like. The content of CO generated by combustion is controlled to be less than 5ppm, the combustion speed is controlled to be less than 4ms and the pressure sensitivity coefficient is controlled to be 0.6 by the weight ratio of the mixed medicament to 2 and the combustion speed ratio of the mixed medicament particles. The phase-stable potassium perchlorate type initiating explosive is used as AN oxidant, so that the ignition performance is improved on the basis of preventing AN phase change, the burning rate is increased to 2 times, and the gas production is increased.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. The gas generating agent for the high-burning-rate micro gas generator is characterized by comprising the following components in percentage by mass:
68-89% of ammonium nitrate;
5-15% of potassium perchlorate;
5-15% of lead cyanide;
1-2% of adhesive;
the preparation method of the gas generating agent for the high-burning-rate micro gas generator comprises the following steps:
(1) preparation of AN AN agent in the form of ammonium nitrate: crushing AN AN raw material ammonium nitrate into 20-30 meshes by using AN extruding crusher, drying and warehousing;
(2) preparation of potassium perchlorate type initiating explosive agent: mixing potassium perchlorate and lead cyanide, adding an adhesive solution, carrying out wet mixing for 30-40 min, drying for 1 hour, then granulating, respectively passing through standard screens of 40 meshes and 20 meshes, taking a 40-mesh lower material and a 20-mesh upper material, drying and warehousing;
(3) mixing AN ammonium nitrate type AN agent and a potassium perchlorate type initiating explosive, and tabletting to obtain the finished product; the weight ratio of the ammonium nitrate type AN agent to the potassium perchlorate type initiating agent is 8: 2.
2. the gas generating agent for a high flame-rate micro gas generator as claimed in claim 1, wherein the weight ratio of potassium perchlorate to lead cyanide is 1: 1.
3. the gas generating agent for a high-burn-rate micro gas generator as claimed in claim 1, wherein the binder is a 20% by mass shellac nitrolacquer solution.
4. The gas generating agent for a high-burn-rate micro gas generator as claimed in claim 1, wherein the amount of the binder solution is 40 mL.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010596931.8A CN111517899B (en) | 2020-06-28 | 2020-06-28 | Gas generating agent for high-burning-rate micro gas generator and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010596931.8A CN111517899B (en) | 2020-06-28 | 2020-06-28 | Gas generating agent for high-burning-rate micro gas generator and preparation method thereof |
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| CN111517899A CN111517899A (en) | 2020-08-11 |
| CN111517899B true CN111517899B (en) | 2021-10-01 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2327905Y (en) * | 1998-02-10 | 1999-07-07 | 西安庆华电器制造厂 | electric ignition tube for gas generator |
| RU2009145068A (en) * | 2009-12-04 | 2011-06-10 | Российская Федерация, от имени которой выступает Министерство промышленности и торговли (Минпромторг России) (RU) | STABLE EMULSION EXPLOSIVE COMPOSITION |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1017524B (en) * | 1986-04-17 | 1992-07-22 | 华东工学院 | Industrial detonator using no priming charge |
| JP3641343B2 (en) * | 1997-03-21 | 2005-04-20 | ダイセル化学工業株式会社 | Gas generator composition for low residue airbag |
| JP3608902B2 (en) * | 1997-03-24 | 2005-01-12 | ダイセル化学工業株式会社 | Gas generating agent composition and molded body thereof |
| CN102010277B (en) * | 2010-09-15 | 2012-07-11 | 中北大学 | ANPZO-based safe airbag gas generating agent |
| KR101212982B1 (en) * | 2012-02-10 | 2012-12-18 | 고려화공 주식회사 | Ignition device for fire extinguisher with new igniter compositions |
| CN108863692A (en) * | 2018-08-14 | 2018-11-23 | 陕西庆华汽车安全系统有限公司 | A kind of gas generant composition in accordance and preparation method thereof for automobile safety air bag gas generator |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2327905Y (en) * | 1998-02-10 | 1999-07-07 | 西安庆华电器制造厂 | electric ignition tube for gas generator |
| RU2009145068A (en) * | 2009-12-04 | 2011-06-10 | Российская Федерация, от имени которой выступает Министерство промышленности и торговли (Минпромторг России) (RU) | STABLE EMULSION EXPLOSIVE COMPOSITION |
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