Russian researchers, specialists of the Institute of Problems of Chemical Physics, Russian Academy of Sciences, suggest the way to make motor-car airbags even more secure. Their theoretical and practical investigations allowed to determine which the compounds should be included in the powder that burns at the moment of blow during the accident so that the airbags were instantly filled up with gases not dangerous to human beings and environment. The researchers’ effort was supported by the International Science and Technology Center.
"Despite the fact that motorcars of established companies have long ago been equipped with airbags, gas generating compositions in them are still far from perfect", says David Lempert, Ph.D. (Chemistry), one of the development authors. The problem is that the requirements to these compositions are rather firm, multiple and sometimes difficult to combine.
Evidently, the airbag powder should burn down instantly, i.e. within 50-60 milliseconds. Along with that, sufficient volume of gases should be formed to fill in the airbag and to protect a person from a blow. At the point of accident, the powder should instantly ignite and burn down at the predetermined combustion rate, i.e. this should be absolutely safe for the car and the passengers, and during all the rest of the time it should preserve exceptional stability – during the 10 to 15-year shelf life, in rainy, frosty and hot weather at the temperature of up to + 110 degrees C it should remain invariably ready, but be insensitive to shaking, friction and blows. Besides, it is necessary that the compositions burned down producing no smoke and detrimental products, such as nitric oxide and carbon monoxide, and making minimal amount of steam.
Sergey Komarov | alfa
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