What does conductive silica gel do and where can it be used?

Conductive silica gel is conductive particles evenly distributed in the silica gel, through the pressure to make conductive particles contact, to achieve good conductive performance. It has military and commercial applications.

Its main function is sealing and electromagnetic shielding. Products can be molded or extruded, and are available in sheet or other cut shapes. Shielding performance up to 120 dB (10 GHz). Conductive silica gel has good electromagnetic sealing and water vapor sealing capability, and can provide good conductivity under certain pressure (suppression frequency up to 40GHz).

First, conductive silica gel application

1. Power pipe, stress evacuation adhesive and cable plug of cold shrinkable cable accessories and heat shrinkable cable accessories;

2, keyboard, keys and other bottom contact conductor;

3. Roller shaft of photocopier;

4, wire connection pipe;

5, when the volume resistance of conductive silica gel is less than 10 ohcm, conductive silica gel has electromagnetic shielding function. That is, the volume resistance is less than 10 ohm cm, mainly used in electromagnetic shielding occasions, but also used in electronic and microwave waveguide systems such as case, cabinet, shelter, power transmission and transformation engineering, connector gaskets, etc.

Two, conductive silica gel and compression force

Conductive silica gel products have two production processes: molding and extrusion. Conductive silica gel must be subjected to a certain compression force in order to conduct well, so the structure design must ensure that the appropriate pressure but not pressure. The best height compression of plate is 7 ~ 15%; The best height compression of solid circle and D shape is 12 ~ 30%; The best compression of tubular and P shape is 20 ~ 60%.