Metal texture plastic buttons
* : * : admin * : 2020/03/23 13:38:58 * : 0
The "metal buttons" on the market are not necessarily all metal buttons. Some are made of plastic, and then they are electroplated, and the shape is almost the same as metal buttons, which is enough to be false.
There are always boxes of boxes of beautiful buttons on the department store stand. But when you hold them with your hands, they are very light and have no impression of texture. In fact, these beautiful "metal" buttons are not metal, but plastic. The luxurious coats of gold and silver on their surfaces are electroplated by chemical methods.
Metal can be electroplated, but have you ever seen plastics? It's actually not easy to plate metal coats on plastic products. Because plastic is an insulator, it is difficult to enter the ions, and plastic is afraid of heat, it is easy to melt when the temperature is high, and the expansion coefficients of plastic and metal are different. It is not possible to plate metal directly on the surface of plastic products. After many experiments, a new plastic called "ABS" was finally invented. Once it encounters chromic acid, the surface will be corroded and many micropores will be produced, which is called roughening in the electroplating industry.
After roughening this material, then chemical methods are used to deposit stannous chloride, silver nitrate, and copper sulfate into the micropores on the surface of the corroded plastic product, so that a plastic film can be attached to the surface In this way, metal coats such as nickel chromium can be "draped" on the buttons by electroplating. At present, plastics suitable for electroplating are limited to "ABS". However, I believe that in the future development, there will definitely be new materials put into the production of "metal" buttons, which are both light and metallic.
The above information comes from the button industry website
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