What is the Gas in the Safety Bag in the Car?

Car airbags are filled with nitrogen. There is solid sodium azide NaN3 in the airbag, which will quickly decompose to generate a large amount of nitrogen when subjected to a severe impact, so the airbag is filled with nitrogen NaN3=NaH+N2. The car airbag is to ensure the safety of the driver and passengers, so the air inflated by the airbag must be an inert gas, and it is generally inflated with nitrogen.

Airbag Gas Generator Inflator

On the one hand, N2 is relatively stable, and on the other hand, it does not contain toxic and harmless gases. Therefore, fashionable vehicle airbags use N2 as an inflator.

Vehicle airbags belong to passive production safety technology, and there is no active power switch. Only when a car crashes, the gas generator can identify whether to ignite or not according to the size of the signal, which promotes the explosion of fuel methanol, N2 quickly refuels and inflates, and the car airbag pops up the window. The development time of all the steps is only about 0.1S. In addition, the vehicle airbag must be used with a safety factor, and only this can guarantee the safety factor of the driver.

The advantage of the vehicle airbag: It can balance the impact force between the head and chest, preventing the more sensitive passenger's body from colliding with the car body immediately, and greatly reducing the chance of injury. Vehicle and automobile airbags can still effectively reduce the hazards for ground-skid vehicle and automobile airbags when subjected to a frontal impact.

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