Take off your canned cola, would you still know it?| Play

Many people like to drink cola

But the cola jar is the same

Can't show our cool personality

So today I will teach you a way

Unlock the hidden skin of the cola can with two steps

experiment equipment

Cola can, cups (large capacity cups), toilet spirit, sandpaper, disposable chopsticks

experiment procedure

first step:

Use sandpaper to polish the lacquer layer on the surface of the cola can to expose the aluminum layer below.

This step is more expensive. It is recommended to bring a disposable glove. If you do n’t have disposable gloves at home, you can use friends.

TIPS: The cola in the tank can play a good role in supporting the tank. Do not drink it in advance, otherwise the tank is easy to deform when polishing, and it is not easy to remove the clean paint layer.

Step 2:

Add the toilet spirit to the cup, it can be more effective, but leave space to prevent the cola can from putting it in and overflow.

Put on the ring of the cola can with disposable chopsticks to burn Cola can.

For a while, a bubbles can be seen, which shows that the aluminum layer has begun to be corroded.

Let the experiment be given to the time, wait for the 86400s to look at the results.

Be careful to put forward the cola jar. You can see that the aluminum layer of the red line is completely corroded. You can see the liquid inside through the tank body.

The aluminum layers of other parts are now very fragile, and they can be wiped off.

It can be seen that the transparent part and the opaque part are in sharp contrast.

Original understanding

The principle used in this small experiment is mainly the corrosion of metal aluminum of acidic liquid. Metal aluminum is a more lively metal, and it is easy to generate hydrogen and aluminum salt with acidic reactions. Chemical equation is

The aluminum salt generated by the reaction enters the solution.

The cola can is made of metal aluminum. There is a layer of polymer coating on the inner surface of the cola can. The main component of this layer of coating is a polymer with stable epoxy resin or other chemical properties. The outer surface of the cola can is a layer of printed ink. We first polished the surface of the cans with sandpaper on the one hand to polish this layer of ink. On the other hand, because metal aluminum in the air is very easy to form a dense alumina film on the surface to protect the internal aluminum. Therefore, sandpaper can also be used to destroy this dense aluminum aluminum film and expose the internal metal aluminum.

The toilet spirit and scale cleansing agent we use in our daily life all contain a certain amount of strong acid, which can be used to corrode the aluminum of cola can. In the end, only the polymer coating on the inner surface (so there is a film in addition to the cola!)

Finally, don't drink the cola after experimenting ~

Review

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