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Gas generator having increased combustion rate and combustion gas amount

A technology of gas generating agent and burning speed, which is applied in the direction of compressed gas generation, transportation and packaging, attacking equipment, etc., which can solve the problems of slow burning speed and low gas volume, and achieve internal pressure reduction, gas generating dose reduction, and weight reduction. Reduced effect

Inactive Publication Date: 2016-02-24
株式会社三松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] As mentioned above, there are the following problems in the existing patents: if the burning speed is fast, the amount of gas is small; if the amount of gas is large, the burning speed is slow; It is too high, but the gas generating agent composition that satisfies the burning speed of more than 20mm / sec (under 1000psi), the amount of gas generation is more than 33moles / kg, and the combustion temperature is below 2300K has not yet appeared.

Method used

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  • Gas generator having increased combustion rate and combustion gas amount

Examples

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Effect test

Embodiment 1

[0054] 55% by weight of copper dinitrate (CDD: Copper diaminedinitrate) as the main oxidant, 6% by weight of basic copper nitrate (BCN: Basic copper nitrate) as the auxiliary oxidant, and 25.8% by weight of guanidine nitrate (GN: Guanidine Nitrate) as the main fuel , 11% by weight of 5-aminotetrazole (5-AT: 5-Aminotetrazole) as a combustion rate-increasing fuel, 1% by weight of manganese oxide (MnO) as a metal oxide catalyst, 1% by weight of carbon black as a combustion catalyst % and calcium stearate (CaS) as an additive at a ratio of 0.2% by weight, weighed to a total amount of 400 g, put into a ball mill (Ball Mill) and mixed for 2 hours to prepare a dry mixture. Theoretically, the composition was calculated with an oxygen balance of -3.5%, a heat of combustion of 705kcal / kg, a combustion temperature of 2282K, a gas volume of 33.12mole / kg, and the result of measuring the combustion rate at 1000psi showed 20.83 mm / sec. The average particle size of manganese oxide (MnO) and ...

Embodiment 2

[0056] 55% by weight of copper dinitrate (CDD: Copper dinitrate) as the main oxidant, 3.17% by weight of basic copper nitrate (BCN: Basic copper nitrate) as the auxiliary oxidant, and 27.63% by weight of guanidine nitrate (GN: Guanidine Nitrate) as the main fuel , 11% by weight of 5-aminotetrazole (5-AT: 5-Aminotetrazole) as a combustion rate increasing fuel, 2.5% by weight of manganese oxide (MnO) as a metal oxide catalyst, 0.5% by weight of carbon black as a combustion catalyst % and calcium stearate (CaS) as an additive at a ratio of 0.2% by weight, weighed to a total amount of 400 g, put into a ball mill (Ball Mill) and mixed for 2 hours to prepare a dry mixture. Theoretically, the composition was calculated with an oxygen balance of -3.5%, a heat of combustion of 707kcal / kg, a combustion temperature of 2260K, a gas volume of 33.37mole / kg, and the result of measuring the combustion rate at 1000psi showed 20.45 mm / sec. The average particle size of manganese oxide (MnO) and...

Embodiment 3

[0058] 57.64 wt % of copper dinitrate (CDD: Copper dinitrate) as main oxidant, 26.16 wt % of guanidine nitrate (GN: Guanidine Nitrate) as main fuel, and 5-aminotetrazole (5-AT) as combustion rate increasing fuel : 11% by weight of 5-Aminotetrazole), 4.5% by weight of manganese oxide (MnO) as a metal oxide catalyst, 0.5% by weight of carbon black as a combustion catalyst, and 0.2% by weight of calcium stearate (CaS) as an additive The mixture was mixed, weighed into a total amount of 400 g, put into a ball mill (Ball Mill) and mixed for 2 hours to prepare a dry mixture. Theoretically, the composition was calculated with oxygen balance of -3.5%, heat of combustion 698kcal / kg, combustion temperature 2225K, gas amount 33mole / kg, and the result of measuring the combustion velocity at 1000psi showed 20.23mm / sec. The average particle size of manganese oxide (MnO) and carbon black is less than 1 μm, and the particle size of 5-15 μm is used for the rest of the raw materials.

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Abstract

The present invention relates to a gas generator which is a core component of an inflator used for expanding an airbag for alleviating the impact on a passenger occuring during a vehicle collision, and provides the gas generator capable of generating a high combustion rate and a large quantity of gas. The present invention provides a gas generator having a combustion rate of 20 mm / sec or higher, a generated gas amount of 33 moles / kg or higher and a combustion temperature of 2300 K or lower by using: copper diamine dinitrate (CDD) as a principal oxidizing agent; basic copper nitrate (BCN) as an auxiliary oxidizing agent; guanidine nitrate (GN) as a principal fuel; 5-aminotetrazole (5-AT) as a combustion-rate-increasing fuel; metal oxide and a combustible catalyst as catalysts; and an additive. Also, the internal pressure of the inflator manufactured by using the gas generator is reduced to 100 bar, and thus the inflator is manufactured so as to weigh 250g which is a remarkable reduction in comparison with 440g of existing product A and 330g of existing product B.

Description

technical field [0001] The present invention relates to a gas generating agent for generating gases such as nitrogen, water vapor, carbon dioxide, and a filterable condensed product after being formed in the form of cylindrical pellets and burning in an inflator, and a gas generating agent comprising The inflator of the gas generating agent. When the car collides, the igniter, igniter, and gas generating agent of the inflator are ignited and burned in this order by the electrical signal detected by the collision sensor, and the gas generated by the combustion of the gas generating agent is filtered along with the The solids are filtered and cooled into the inside of the folded air bag, inflating the air bag and cushioning the shock of the occupant in the event of a car crash. This application claims the benefit of the filing date of Korean Patent Application No. 10-2013-0057168 filed with the Korean Patent Office on May 21, 2013, the entire contents of which are incorporated ...

Claims

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Application Information

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IPC IPC(8): C06D5/00C06B31/00C06B25/00C06B45/00
CPCC06D5/06B60R21/00C06B25/00C06B31/00C06D5/00
Inventor 李荣镐李昇宰尹智慧
Owner 株式会社三松
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