DIY fireproof material
How to protect something from fire
Warning! Observe safety rules when working with fire.
- metal ring;
- concentrated baking soda solution;
- wooden sticks;
- calcium chloride and sodium silicate solutions.
Moisten a thread with antiseptic and hang a metal ring on it. Set the thread on fire – it burns and breaks, and the ring falls! Dip another thread in a concentrated baking soda solution. Dry it with a hairdryer. Dip this thread in the antiseptic and hang the metal ring on it. When ignited, the flame runs along the thread, but the thread does not break – the ring remains suspended. The same can be done with wooden sticks. If they are immersed in calcium chloride and sodium silicate solutions and then dried, igniting them will prove very difficult indeed. A dollhouse made of these sticks doesn’t fear fire!
The antiseptic contains alcohol, which is easy to ignite and burns well. Therefore, a thread dipped in the antiseptic easily ignites and breaks. Baking soda helps prevent this. When exposed to flame, it decomposes, releasing carbon dioxide and absorbing heat. Therefore, only the alcohol ignites, and the thread remains intact! When we dip wooden sticks in solutions of calcium chloride and sodium silicate, calcium silicate forms on their surface – a substance that conducts heat so poorly that it is used in the construction of fireplaces. Therefore, if you assemble a dollhouse from such sticks, cover it with antiseptic, and set it on fire, it will also remain intact!
Explore the laws of nature with the MEL Chemistry subscription!