Shielded rooms are widely used in medical, military and other industries due to their special functions. For the shielding body, the type of material selected has a great impact on its performance and cost. Magnetic shielding materials should be selected according to their respective characteristics, especially magnetic permeability and magnetic saturation performance. So what are the commonly used shielding materials in shielded rooms? The following is an introduction by the staff of the manufacturer:
1. Rubber core woven mesh shielding gasket
Rubber and metal wires are optional (Monel wire, tinned steel core copper wire), which are used in chassis, cabinet gap shielding, shielding rooms and shielding shelters. There are two ways of groove mounting and surface mounting.
2. Beryllium copper reed shield gasket
The reed made of beryllium copper is suitable for the gap design of communication, computer, shielded room, shielded shelter and other equipment. It not only solves the problem that other gaskets cannot withstand tangential movement, but also has high shielding effectiveness, and at the same time has the characteristics of high thermal conductivity and good pressure resistance.
3. Conductive glue
A. Silicone grease conductive adhesive, mainly used in conductive rubber plate and metal bonding; conductive rubber strip and metal bonding; B, epoxy conductive adhesive, mainly used in metal and metal bonding; printed circuit board circuit connection; microwave components Lead connection; metal wire mesh shielding strip is fixed.
4. Conductive filler (conductive putty)
Mainly used for shielding in gaps where shielding gaskets cannot be added.
5. Magnetic field shielding materials
Magnetic field shielding below the working frequency or 100kHz needs to provide a very low magnetic resistance surface to complete. Magnetic field shielding materials provide high permeability shielding materials.
6. Shielding glass
Mainly used in the windows of electronic equipment that need light transmission, such as: CRT, instrument and meter night crystal display window.
8. Light-transmitting conductive polyester film
Electronic equipment display window shielding, light transmittance: 70%, best shielding effectiveness: 40～60dB.
When designing a shielded room, it is important to have an in-depth understanding of the characteristics of different shielding alloys commonly used. The understanding of these different properties will enable you to choose the right material to meet the target requirements.