Conductive silicone buttons are not only used in TV remote control, but also used in many other consumer products. The PCB design of this button has no rules, and the design shape and winding method can be used as long as the two contact points are not connected. It is worth noting that the conductive black particles are bad, it is important to find out the relevant reasons.

Conductive silicone button conductive black particles bad reasons:
1. In the vulcanization process of water tank gaskets, etc., because the vulcanization temperature is very low, this will constitute an excellent connection between the conductive black particles and the silicone button, and also constitutes the appearance of the conductive silica gel button to remove the black particles, then the conductive The silicone button is also a bad product.

2. If the molding temperature is too high, it will cause the silica material to be more active in the mold. It may have been formed in the process of movement in the mold, and then it will constitute an excellent assembly of conductive silicone buttons and conductive black particles. .

3. In the vulcanization process, it is assumed that the vulcanization time is too short or the vulcanization temperature is too low, which will constitute the incomplete vulcanization of the conductive silica gel, which constitutes the appearance of black particles. In the exhaust process of the button product, it is assumed that the exhaust gas is incomplete and the silica gel is caused. The button shows the wind and the appearance of black particles.

4, the silica gel material in the molding pressure is relatively low, or the silicone material will be injected less will also constitute the appearance of black particles.

In fact, the conductive silicone button is to add conductive material on the silicone button of the water tank seal to achieve the purpose of conduction. The square and ellipse shape is suitable for screen printing. The size of the conductive ink is not limited, and the printing type resistance value is usually less than 800 Ω under the application of 300 g force. The life expectancy is generally 1 million, but as the use time increases, its resistivity will become higher and higher.