How to make a fireproof balloon
Making a fireproof balloon at home
Observe safety precautions when working with fire.
- 2 balloons;
- 50mL water;
Inflate a balloon slightly. Add 50mL water using a syringe. Blow the balloon up to the desired size. Inflate the second balloon as you normally would, without water. Bring the balloons to a burning candle one by one. Note that the “hydrated” balloon does not burst!
The water stays in close contact with the balloon, providing a good thermal contact. When the balloon’s surface is heated, the water heats up as well. The water’s high thermal conductivity allows for the rapid distribution of energy throughout its volume. Ultimately, we are heating not only the surface of the balloon, but all the water in it at once. Water’s boiling point is far below the melting point of the balloon’s material, and water’s high heat capacity makes it impossible to heat quickly, which means that the water can efficiently protect the balloon from the heat for a long time. This protection will work until the water boils away.