Safety belt pre-tighter gas production medicine as well as preparation and utilization method thereof

A technology of seat belt pretensioner and gas-producing agent, which is applied to attack equipment, compressed gas generation, etc., can solve the problems of high temperature, high mechanical sensitivity, loud noise, etc., and achieves low temperature, low mechanical sensitivity, low noise effect

Active Publication Date: 2008-06-25
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of high mechanical sensitivity, high noise and high temperature during combustion of the existing safety belt pretensioner gas-producing medicine, and provide a low mechanical sensitivity, low noise and low temperature during combustion. Seat belt pretensioner gas-generating medicine and preparation method and use method of said medicine

Method used

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preparation example Construction

[0022] According to the preparation method provided by the present invention, the drying method and temperature are well known in the art, preferably the drying temperature is 20-80°C, more preferably the drying temperature is 60-70°C, and the drying time Preferably it is 1-10 hours.

[0023] The present invention will be described in more detail through specific embodiments below.

Embodiment 1

[0025] This embodiment illustrates the seat belt pretensioner gas-generating medicine provided by the present invention and its preparation method.

[0026] The phenolic resin of 6 parts by weight is dissolved in 24 parts by weight of acetone, 16 parts by weight of 5-aminotetrazole, 10 parts by weight of potassium nitrate, 15 parts by weight of potassium perchlorate and 3 parts by weight of sodium bicarbonate are added to the above-mentioned dissolved phenolic resin. Acetone solution, mix well to get a paste. Dry at 40°C for 3 hours to obtain the gas-generating drug for seat belt pretensioners. Gained dry powder is mixed with ethanol in a weight ratio of 2.5:1, and the gas-generating drug granules of the present invention whose median particle diameter D50 is 1 mm are prepared according to the instrument specification with a GHL series high-speed mixing granulator (Jiangyin Mingke Machinery Factory). Dry the gas-generating drug granules at 50°C for 4 hours to obtain the gas-g...

Embodiment 2

[0029] This embodiment illustrates the seat belt pretensioner gas-generating medicine provided by the present invention and its preparation method.

[0030] Dissolve 15 parts by weight of sodium carboxymethylcellulose in a mixed solution of 100 parts by weight of acetone and ethanol, wherein the weight ratio of acetone to ethanol is 2:1. The tetrazole of 35 weight parts, the sodium nitrate of 38 weight parts, the ammonium bicarbonate of 10 weight parts, the magnesium powder of 1 weight part and the aluminum powder of 1 weight part join the acetone and ethanol that above-mentioned dissolved carboxymethyl cellulose sodium In the mixed solution, mix evenly to obtain a paste. The resulting paste was dried at 70°C for 0.8 hours, and the gas-generating drug granules of the present invention with a median diameter D50 of 1.5 mm were prepared with a GHL series high-speed mixing granulator according to the instrument manual, and the gas-generating drug granules were dried at 50°C Obta...

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Abstract

The invention provides a gas production drug for safety belt pretention unit, which contains adhesives, nitrogen-contained organic compounds, oxidants and endorthermic agents; wherein, the content of the adhesives is larger than 10 per cent to 20 per cent, the content of the nitrogen-contained organic compounds ranges from 30 per cent to 55 per cent, the content of the oxidants ranges from 30 per cent to 55 per cent and the content of the endorthermic agents ranges from 4 per cent to 15 per cent in weight proportion with the total weight of the gas production drug as the datum. As the content of the adhesives is larger than 10 per cent to 20 per cent in weight proportion, the gas production drug for safety belt pretention unit provided by the invention not only has high gas production rate and leads to the favorable shrinkage performance of the safety belt, but also has low mechanical sensitivity and good safety, causes low noise and is low at temperature when being combusted so as to reduce the harms done to the passengers and vehicles.

Description

technical field [0001] The invention relates to a medicament for generating deflagration or propellant gas and its preparation method and use method, in particular to a seat belt pretensioner gas-generating medicament and its preparation method and use method. Background technique [0002] Car seat belts have saved many lives over the decades since they were invented, and are now standard on cars. Seat belts are the most important protective facilities in automobile safety restraint systems, which play an important role in reducing occupant injuries in collision accidents, especially in protecting occupant chest and head safety. The pre-tensioned safety belt has been popularized rapidly because of its good protection effect and comfortable use performance. The main function of the pre-tensioned seat belt is to eliminate the slack between the webbing and the occupant before the collision begins within a few milliseconds, minimize the relative movement between the occupant an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06D5/00C06D5/06
Inventor 吴寒杰魏德贤邹财松
Owner BYD CO LTD
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