CN101234943B - Gas generating agent for automobile safe gasbag and preparing method thereof - Google Patents
Gas generating agent for automobile safe gasbag and preparing method thereof Download PDFInfo
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- CN101234943B CN101234943B CN2008100141979A CN200810014197A CN101234943B CN 101234943 B CN101234943 B CN 101234943B CN 2008100141979 A CN2008100141979 A CN 2008100141979A CN 200810014197 A CN200810014197 A CN 200810014197A CN 101234943 B CN101234943 B CN 101234943B
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Abstract
The invention discloses an automobile airbag gas generating agent and a preparation method thereof. The invention is characterized in that 30 to 50 percent of guanidine nitrate, 5 to 20 percent of basic cupric nitrate, 10 to 25 percent of strontium nitrate, 3 to 10 percent of ammonium perchlorate, 2 to 6 percent of iron sesquioxide, 2 to 10 percent of sodium carboxymethyl cellulose and 2 to 5 percent of caoline taken in accordance with the weight percentages are mixed thoroughly; after distilled water is added, the mixture is heated and kneaded and cooled for granulation; obtained particles are then dried and sieved to get the gas generating agent. Raw materials for products to be made with the method of the invention are easy to acquire and have low prices. The production process is safe and conducive to safety of automobile occupants and also to environment protection.
Description
Technical field:
The present invention relates to a kind of gas-evolution agent and preparation method thereof, relate in particular to a kind of gas generating agent for automobile safe gasbag and preparation method thereof.
Background technology:
Automotive Airbag Technology has obtained application more and more widely in China now, absorbs Impact energy protection car-driver and other occupants' personnel safety to utilize air bag when having an accident.Make airbag finish inflation, need the using gas propellant in the moment that has an accident.The gas-evolution agent of car safety air bag widespread use at present, use has severe toxicity and produces medicaments such as pyritous sodiumazide, Cyclotrimethylene trinitramine more, improve the combustionvelocity and the ignition characteristic of gas generating agent component, the gas generating agent of this component, not only increase the gas generating agent cost, make the process operations person of manufacturer will dress tight P.P.'s articles for use simultaneously, burning and explosion hazard in case take place in carefully handled in producing.And the poisonous and hazardous high-temperature gas of its generation brings very major injury and pollution to automobile passenger and environment.
Summary of the invention:
The object of the invention is to overcome the deficiency of above-mentioned prior art and provides a kind of starting material to be easy to obtain, and cheap, and production process safety is of value to gas generating agent for automobile safe gasbag of vehicle occupant safety and environmental protection and preparation method thereof.
Purpose of the present invention can reach by following measure: a kind of gas generating agent for automobile safe gasbag, it is characterized in that getting by weight percentage Guanidinium nitrate 30-50%, basic copper nitrate 5-20%, strontium nitrate 10-25%, ammoniumper chlorate 3-10%, ferric oxide 2-6%, Xylo-Mucine 2-10%, kaolin 2-5% is mixed and made into.
In order further to realize purpose of the present invention, granularity≤the 10um of described Guanidinium nitrate, granularity≤the 8um of basic copper nitrate, granularity≤the 0.15mm of strontium nitrate, granularity≤the 0.15mm of ammoniumper chlorate, granularity≤the 0.10mm of ferric oxide, the granularity 80-15um of Xylo-Mucine, kaolinic granularity≤15um.
A kind of preparation method of gas generating agent for automobile safe gasbag is characterized in that it comprises the steps:
A, with above-mentioned raw materials thorough mixing in mixing machine in proportion, become the pulvis that reaches uniformity;
B, mixed raw material is poured in the kneader, and added the distilled water of gross weight 10-30%, kneader is heated to 70-90 degree centigrade, and abundant kneading again is cooled to 25-40 ℃ then.
C, in tablets press, the raw material after mediating is made 20-80 purpose particle.
D, with this particle the drying baker heating part of anhydrating, screening is got screen overflow and is made the particulate state gas-evolution agent.
In order further to realize purpose of the present invention, the propellant of making in the described steps d is pressed into the agent sheet of specified dimension in rotary tablet machine, carry out drying again, makes moisture content≤0.4%, makes product.
The present invention's agreement is compared to produce by technology has following effect: main raw material of the present invention is the high organic compound Guanidinium nitrate of gas production rate, oxygenant adopts basic copper nitrate, strontium nitrate, secondary oxygenant is an ammoniumper chlorate, make catalyzer with ferric oxide, the binding agent Xylo-Mucine, slagging releasing agent kaolin, it is slow to have solved Guanidinium nitrate prescription combustion speed, a difficult problem that is difficult to regulate.And be convenient to gas generating agent moulding demoulding, the dust in the absorption combustion gases improves the combustion gas filterableness.Its advantage is mainly as follows:
1, the gas production rate of gas generating agent of the present invention is higher than general gas generating agent more than 30%, and production cost reduces.
2, owing to do not adopt medicaments such as sodiumazide, Cyclotrimethylene trinitramine to improve combustion speed and ignition characteristic, reduced in the prevention production combustion explosion and poisonous relevant setting and equipment to personal injury have taken place, improved the security of the equipment and the person.
3, this gas-evolution agent, temperature of combustion is low, and aerogenesis is than high, and materials are few, reduced the burning and the infringement of harmful poisonous flue gas of occupant, alleviated the pollution to environment.
4, through weathering test, its ignition delay time reaches specified volume pressure and reaches this pressure time, all meet the requirement of air bag, and residue is few, and gas temperature is low.
Embodiment:
Below the specific embodiment of the present invention is elaborated:
Embodiment 1: raw material is prepared: the Guanidinium nitrate 30g of granularity≤10um, the basic copper nitrate 20g of granularity≤8um, the strontium nitrate 25g of granularity≤0.15mm, the ammoniumper chlorate 10g of granularity≤0.15mm, the ferric oxide 2g of granularity≤0.10mm, granularity is the Xylo-Mucine 8g of 80-15um, the kaolin 5g of granularity≤15um.
Propellant preparation:, become the pulvis that reaches uniformity with above-mentioned raw materials thorough mixing in mixing machine in proportion; Mixed raw material is poured in the kneader, and added the distilled water of gross weight 10%, kneader is heated to 70-90 degree centigrade, and abundant kneading again is cooled to 25-40 ℃ then; Raw material after mediating is made 20-80 purpose particle in tablets press; This particle is heated the part of anhydrating at drying baker, and screening is got screen overflow and is made the particulate state gas-evolution agent; Then the particulate state gas-evolution agent is pressed into the agent sheet of specified dimension in rotary tablet machine, carries out drying again, make moisture content≤0.4%, make product.
Detect: get above-mentioned dose of sheet 28g, boost 40 and light a fire in the force container, record maximum pressure 195kpa, reach maximum pressure time 45ms, ignition delay 4ms.Weathering test, weigh agent sheet 28g, pack in the producer, put into 90 ℃ of baking oven accelerated deteriorations 400 hours and take out, boost 40 and light a fire in the force container, record maximum pressure 195kpa, obtain maximum pressure time 46ms, ignition delay 4ms, CO concentration 0.63% is weighed as 3200mg with oven dry behind the premium on currency collection residue.
Embodiment 2: raw material is prepared: the Guanidinium nitrate 50g of granularity≤10um, the basic copper nitrate 5g of granularity≤8um, the strontium nitrate 20g of granularity≤0.15mm, the ammoniumper chlorate 7g of granularity≤0.15mm, the ferric oxide 6g of granularity≤0.10mm, granularity is the Xylo-Mucine 10g of 80-15um, the kaolin 2g of granularity≤15um.
Propellant preparation:, become the pulvis that reaches uniformity with above-mentioned raw materials thorough mixing in mixing machine in proportion; Mixed raw material is poured in the kneader, and added the distilled water of gross weight 30%, kneader is heated to 70-90 degree centigrade, and abundant kneading again is cooled to 25-40 ℃ then; Raw material after mediating is made 20-80 purpose particle in tablets press; This particle is heated the part of anhydrating at drying baker, and screening is got screen overflow and is made the particulate state gas-evolution agent; Then the particulate state gas-evolution agent is pressed into the agent sheet of specified dimension in rotary tablet machine, carries out drying again, make moisture content≤0.4%, make product.
Detect: get above-mentioned dose of sheet 28g, boost 40 and light a fire in the force container, record maximum pressure 195kpa, reach maximum pressure time 56ms, ignition delay 5ms.Weathering test, weigh agent sheet 28g, pack in the producer, put into 90 ℃ of baking oven accelerated deteriorations 400 hours and take out, boost 40 and light a fire in the force container, record maximum pressure 195kpa, obtain maximum pressure time 57ms, ignition delay 5ms, CO concentration 0.8% is weighed as 2300mg with oven dry behind the premium on currency collection residue.
Embodiment 3: raw material is prepared: the Guanidinium nitrate 40g of granularity≤10um, the basic copper nitrate 20g of granularity≤8um, the strontium nitrate 10g of granularity≤0.15mm, the ammoniumper chlorate 10g of granularity≤0.15mm, the ferric oxide 5g of granularity≤0.10mm, granularity is the Xylo-Mucine 10g of 80-15um, the kaolin 5g of granularity≤15um.
Propellant preparation:, become the pulvis that reaches uniformity with above-mentioned raw materials thorough mixing in mixing machine in proportion; Mixed raw material is poured in the kneader, and added the distilled water of gross weight 25%, kneader is heated to 70-90 degree centigrade, and abundant kneading again is cooled to 25-40 ℃ then; Raw material after mediating is made 20-80 purpose particle in tablets press; This particle is heated the part of anhydrating at drying baker, and screening is got screen overflow and is made the particulate state gas-evolution agent; Then the particulate state gas-evolution agent is pressed into the agent sheet of specified dimension in rotary tablet machine, carries out drying again, make moisture content≤0.4%, make product.
Detect: get above-mentioned dose of sheet 28g, boost 40 and light a fire in the force container, record maximum pressure 195kpa, reach maximum pressure time 48ms, ignition delay 4ms.Weathering test, weigh agent sheet 28g, pack in the producer, put into 90 ℃ of baking oven accelerated deteriorations 400 hours and take out, boost 40 and light a fire in the force container, record maximum pressure 195kpa, obtain maximum pressure time 49ms, ignition delay 4ms, CO concentration 0.67% is weighed as 3200mg with oven dry behind the premium on currency collection residue.
Embodiment 4: raw material is prepared: the Guanidinium nitrate 50g of granularity≤10um, the basic copper nitrate 15g of granularity≤8um, the strontium nitrate 21g of granularity≤0.15mm, the ammoniumper chlorate 3g of granularity≤0.15mm, the ferric oxide 5g of granularity≤0.10mm, granularity is the Xylo-Mucine 2g of 80-15um, the kaolin 4g of granularity≤15um.
Propellant preparation:, become the pulvis that reaches uniformity with above-mentioned raw materials thorough mixing in mixing machine in proportion; Mixed raw material is poured in the kneader, and added the distilled water of gross weight 15%, kneader is heated to 70-90 degree centigrade, and abundant kneading again is cooled to 25-40 ℃ then; Raw material after mediating is made 20-80 purpose particle in tablets press; This particle is heated the part of anhydrating at drying baker, and screening is got screen overflow and is made the particulate state gas-evolution agent; Then the particulate state gas-evolution agent is pressed into the agent sheet of specified dimension in rotary tablet machine, carries out drying again, make moisture content≤0.4%, make product.
Detect: get above-mentioned dose of sheet 28g, boost 40 and light a fire in the force container, record maximum pressure 195kpa, reach maximum pressure time 64ms, ignition delay 5ms.Weathering test, weigh agent sheet 28g, pack in the producer, put into 90 ℃ of baking oven accelerated deteriorations 400 hours and take out, boost 40 and light a fire in the force container, record maximum pressure 195kpa, obtain maximum pressure time 65ms, ignition delay 5ms, CO concentration 0.73% is weighed as 2800mg with oven dry behind the premium on currency collection residue.
Claims (4)
1. a gas generating agent for automobile safe gasbag is characterized in that getting by weight percentage Guanidinium nitrate 30-50%, basic copper nitrate 5-20%, strontium nitrate 10-25%, ammoniumper chlorate 3-10%, ferric oxide 2-6%, Xylo-Mucine 2-10%, kaolin 2-5% is mixed and made into.
2. a kind of gas generating agent for automobile safe gasbag according to claim 1, granularity≤the 10um that it is characterized in that described Guanidinium nitrate, granularity≤the 8um of basic copper nitrate, granularity≤the 0.15mm of strontium nitrate, granularity≤the 0.15mm of ammoniumper chlorate, granularity≤the 0.10mm of ferric oxide, the granularity 80-15um of Xylo-Mucine, kaolinic granularity≤15um.
3. the preparation method of claim 1 or 2 described a kind of gas generating agent for automobile safe gasbag is characterized in that it comprises the steps:
A, with above-mentioned raw materials thorough mixing in mixing machine in proportion, become the pulvis that reaches uniformity;
B, mixed raw material is poured in the kneader, and added the distilled water of gross weight 10-30%, kneader is heated to 70-90 degree centigrade, fully mediates, and is cooled to 25-40 ℃ then.
C, in tablets press, the raw material after mediating is made 20-80 purpose particle.
D, with this particle the drying baker heating part of anhydrating, screening is got screen overflow and is made the particulate state gas-evolution agent.
4. the preparation method of a kind of gas generating agent for automobile safe gasbag according to claim 3, it is characterized in that the propellant of making in the described steps d is pressed into the agent sheet of specified dimension in rotary tablet machine, carry out drying again, make moisture content≤0.4%, make product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100141979A CN101234943B (en) | 2008-03-03 | 2008-03-03 | Gas generating agent for automobile safe gasbag and preparing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100141979A CN101234943B (en) | 2008-03-03 | 2008-03-03 | Gas generating agent for automobile safe gasbag and preparing method thereof |
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| Publication Number | Publication Date |
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| CN101234943A CN101234943A (en) | 2008-08-06 |
| CN101234943B true CN101234943B (en) | 2011-06-08 |
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| CN2008100141979A Expired - Fee Related CN101234943B (en) | 2008-03-03 | 2008-03-03 | Gas generating agent for automobile safe gasbag and preparing method thereof |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102642513A (en) * | 2011-02-22 | 2012-08-22 | 烟台安泰德汽车安全系统有限公司 | Internal mixing type gas curtain gas generator |
| CN106699489B (en) * | 2015-11-12 | 2019-01-11 | 比亚迪股份有限公司 | A kind of gas generant composition in accordance for air bag and preparation method thereof and a kind of gas generator for automobile safety gas bag |
| CN107840772B (en) * | 2017-03-02 | 2020-06-30 | 湖北航天化学技术研究所 | High-burning-rate gas generating agent and granulating process thereof |
| CN107698415A (en) * | 2017-10-24 | 2018-02-16 | 湖北航鹏化学动力科技有限责任公司 | A kind of gas generant composition, preparation method, application and gas generator |
| CN108083959A (en) * | 2017-12-20 | 2018-05-29 | 湖北航鹏化学动力科技有限责任公司 | A kind of reliable ignition powder composition of ignition performance and preparation method thereof |
| CN108827086B (en) * | 2018-06-22 | 2019-08-02 | 武汉理工大学 | A kind of fracturing cylinder and its explosion neas men method based on airbag gas-generating agent |
| CN111548242B (en) * | 2020-05-15 | 2021-09-03 | 湖北航鹏化学动力科技有限责任公司 | Gas generator |
| CN111675589B (en) * | 2020-05-15 | 2021-08-06 | 湖北航鹏化学动力科技有限责任公司 | Gas generating agent composition, preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644574A (en) * | 2004-12-16 | 2005-07-27 | 中国航天科技集团公司第四研究院第四十二研究所 | Non-nitrine gas generating agent and production thereof |
| CN1927779A (en) * | 2006-02-22 | 2007-03-14 | 上海东方久乐汽车安全气囊有限公司 | Gas generation medicine for automobile safety air bag gas generator and preparation process thereof |
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2008
- 2008-03-03 CN CN2008100141979A patent/CN101234943B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644574A (en) * | 2004-12-16 | 2005-07-27 | 中国航天科技集团公司第四研究院第四十二研究所 | Non-nitrine gas generating agent and production thereof |
| CN1927779A (en) * | 2006-02-22 | 2007-03-14 | 上海东方久乐汽车安全气囊有限公司 | Gas generation medicine for automobile safety air bag gas generator and preparation process thereof |
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Granted publication date: 20110608 Termination date: 20120303 |