Aerogenic composition of pretensioner of automobile safety belt and preparation method thereof

A technology of seat belt pretensioner and gas-generating composition, which is applied to the generation of compressed gas and attack equipment, and achieves the effects of good thermal stability, wide sources and low cost
CN101823927AActive Publication Date: 2010-09-08陕西庆华汽车安全系统有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
陕西庆华汽车安全系统有限公司
Publication Date
2010-09-08

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Abstract

The invention discloses an aerogenic composition of a pretensioner of an automobile safety belt, which is prepared from flammable agent, mixed oxidants and adhesive, wherein the mass percent of the flammable agent, the mixed oxidants and the adhesive are respectively 40-85%, 10-55% and 2-10%. A preparation method of the aerogenic composition comprises the following steps of: kneading and mixing, extrusion moulding or squeezing, and cutting; then drying for 4h-12h under the condition that the room temperature is 60 DEG C; and then after drying for at least 6h under the temperature of 102-120 DEG C, carrying out screening treatment, obtaining medicine granula with the given size, and thermal packing by using a plastic bag. The aerogenic composition has good heat-resistant quality, good compatibility, wide sources and cost-effective raw materials, particularly has good thermal stability, and can replace nitrocellulose.
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Description

technical field

[0001] The present invention relates to a pyrotechnic type gas-generating composition, in particular to a gas-generating composition for a car seat belt pretensioner and its preparation, and is mainly used for micro-gas generation in a car seat belt pretensioner system device (often referred to as MGG) use. Background technique

[0002] In the passive safety protection system of automobiles, safety airbags are usually installed to protect the driver and passengers (hereinafter referred to as passengers). Its characteristics are: when the car has a collision accident, it will first tighten the webbing before the occupant moves forward, and immediately fix the occupant tightly on the seat, preventing the occupant from leaning forward and moving, effectively protecting the safety of the occupant .

[0003] The design service life required by the micro gas generator (MGG) is usually 15 years. Within the validity period, the time from its ignition to combustion ...

Claims

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