Is the inner container of pneumatic thermos easy to explode?

It is not easy to explode, and the performance of the pneumatic thermos bottle is still very good.

Explosions usually have two reasons:

First, the heating is uneven, and the temperature difference between hot and cold is too large. For example, the weather is hot and stressful; Or in the cold winter, the temperature of the bottle is too low, and the bottle liner of the open bottle is heated locally after contacting with hot water, resulting in a sudden explosion.

Second, the air expands and the pressure is too high. This is why most thermos bottles explode. When the bottle is filled with hot water, if the stopper is too tight, the pressure in the bottle will explode. So sometimes we carry a boiling water bubble and it will burst suddenly on the road.