Why are toy hydrogen balloons banned by villagers in Jilin still on the street?

Because of the existence of interests, we all know that the relevant national laws stipulate that balloons filled and sold in public places should be nonflammable inert gas helium, so as to ensure the safety of children when playing with balloons. But in fact, the balloons we see flying in the sky during holidays or large-scale activities are basically hydrogen balloons, and most of the gas filled in them is hydrogen, mainly because the price of hydrogen is much cheaper than inert gases such as helium.

We know that hydrogen is a flammable and explosive gas. When hydrogen balloons are exposed to static electricity, smoking and sunlight, they may cause explosion and combustion. Some experimental data show that when the hydrogen content reaches 4% to 74.2%, friction spontaneous combustion will occur when it encounters static electricity.

With the progress of society, people's clothes and car cushions are made of chemical fiber, which is easy to generate static electricity. If it is still in a relatively sealed space, when static electricity accumulates to a certain extent, it will produce sparks, which will lead to balloon spontaneous combustion and even explosion.

Once a hydrogen balloon meets a spark, hydrogen will react to generate heat. Because the heat cannot be discharged, the pressure will expand rapidly, exceeding the surface load of the balloon and exploding. The bigger the hydrogen balloon, the higher the hydrogen content and the more violent the explosion.

Therefore, when we choose a hydrogen balloon, we must ask the merchants in detail what gas is in the balloon. In addition, the regular helium bottle is brown and white with "Helium" written on it, so the inflation speed is relatively fast, so before buying, check whether the inflatable bottle of the merchant is a helium bottle.

In short, helium balloons are relatively safe and will not explode. Helium is a rare gas, inert gas and nonflammable. Hydrogen balloons are easy to explode and catch fire, so you must pay attention to the details when choosing balloons.