Conductive silicone keys generally use two conductive materials: conductive black particles and ink conductive, so how to distinguish the two conductive silicone keys?
1, the black conductive silicone key identification method, to see whether there is a black dot at the bottom of the key, and the dot must have a certain thickness, there are also some dots with texture, if one of the two conditions is met, then the black conductive silicone key.
2, ink conductive silicone key identification method, is also to see whether there is a black dot at the bottom of the key, and this dot is particularly thin, and some are formed with the shape of the bottom of the key - a small black block, which can not be deducted with the nail is the ink conductive silicone key.
When it comes to silicone keys, I believe everyone knows that silicone keys are the same as other keys, as long as the product needs to use buttons, then silicone keys can be used, for example; "Remote control keys, instrument keys, electronic dictionary keys" including all electronic products can be used, then do you know, what makes silicone keys into conductive silicone keys, and how do we identify what is conductive silicone keys?
In conductive silicone keys are usually divided into two conductive materials:
1, (conductive black particles) principle: the contact between conductive particles, forming a conductive path, so that the conductive adhesive has electrical conductivity, the stable contact between the particles in the adhesive layer is due to the conductive adhesive curing or drying caused. Before the conductive adhesive is cured or dried, the conductive particles are separated in the adhesive, and there is no continuous contact with each other, so they are in an insulating state. After the conductive adhesive is cured or dried, the volume of the adhesive shrinks due to the volatilization of the solvent and the curing of the adhesive, so that the conductive particles are in a stable continuous state with each other, and thus show electrical conductivity.
2, (ink conductive) electrically conductive printing ink (electrically conductive printing ink), paste ink made of conductive materials (gold, silver, copper and carbon) dispersed in the binder, commonly known as paste ink. It has a certain degree of conductive property and can be used for printing conductive points or conductive lines.