With the development of integrated circuits and large-scale electronics industries in recent years, the research and application of conductive rubber have also developed rapidly. Many new electronic products with high-precision technology have the problem, and a variety of high-precision new conductive rubber products have also emerged.
Isotropic conductive rubber
Isotropic conductive rubber has uniform conductivity in all directions. Both elastic and suitable resistance, no oscillation, small switching load, can be made of any shape of key switch. Currently, keyboards have been used to make computers and video game consoles.
Anisotropic conductive rubber
Anisotropic conductive rubber has conductivity in a certain direction. It is suitable for high-resistance connectors within liquid crystal displays or low-resistance connectors for printed circuit board contacts.
Pressure sensitive conductive rubber
The conductivity of varistor conductive rubber decreases with the increase of pressure, and it is generally an insulator when it is not subjected to force. It has two types: one is the switching type, which is an insulator when not under pressure, and when the pressure reaches a certain value, the resistance is sharply reduced to a conductive state. It can be used to manufacture solid-state switching elements and shock-free switching elements, such as vehicle information sensors for adjusting highways or roads. The second is the analog type, whose resistance value gradually changes with the change of pressure.
Conductive rubber for electromagnetic shielding
Since electronic instruments, communication equipment and computers themselves will produce electromagnetic waves, but also by the interference of external electromagnetic waves, it is necessary to shield electromagnetic waves. The principle of electromagnetic shielding with conductive rubber is: through the circulation induction of conductive rubber seals, reflect and absorb part of the electromagnetic wave energy injected by the outside world (or itself), so that the residual electromagnetic wave energy through the shield is weakened to a degree acceptable to the safety network system. The purpose is to use conductive materials to limit the electromagnetic field to a range, or to weaken the strength of the electromagnetic field to a specified value.
Antistatic conductive rubber
In the past, antistatic conductive rubber mostly used carbon black as a conductive filler, the volume of electro-negative rate was 104-108Ω·cm, the product was black, and the rubber would precipitate carbon black after aging and thus pollute the environment. In recent years, silicone-based silicide fillers have been used to make color antistatic conductive rubber of different colors, and its volume resistivity is 105-107Ω·cm, and its antistatic properties are better than that of black rubber.