Carbon fiber shielding materialIt is a new type of electromagnetic shielding material developed in recent years, which has excellent properties such as light weight, high specific strength (tensile strength greater than 2000 MPa), and strong corrosion resistance. Carbon fiber shielding materials are mainly used as grounding wires in power system applications to protect equipment from interference. At present, the application fields at home and abroad include the power industry, such as substations, power plants, and transmission and distribution lines; Communication industry; Industrial control, such as computers and automation instruments; Military and aerospace industries, such as aircraft manufacturing and missile launchers.
Physical properties of carbon fiber
1. Density: The density of carbon fiber is 0.92g/cm3.
2. Thermal conductivity: The thermal conductivity of carbon fiber is 13W/m.k.
3. Elastic modulus: The elastic modulus of carbon fiber is 2 × 104~3 × 104 GPa.
4. Resistance: The resistivity of carbon fiber is 0.5-1 Ω· cm.
5. Conductivity: The conductivity value of carbon wire is poor, but the dielectric quality and resistance value of carbon wire are high, and its dielectric performance is better than aluminum foil. The high-frequency blocking effect of aluminum foil is better than that of carbon wire.
Carbon fiber shielding material is utilized
carbon fibreAs a new technology for shielding materials. Carbon fiber has excellent mechanical properties, thermal stability, and chemical stability, making it widely used in fields such as electronics, aviation, and aerospace. In carbon fiber shielding materials, the combination of carbon fiber and other materials can form shielding layers with different properties, thus meeting the needs of different fields.
The principle of carbon fiber shielding material
The principle of carbon fiber shielding material is to use the combination of carbon fiber and other materials to achieve the purpose of shielding electromagnetic interference through electromagnetic shielding. Electromagnetic interference refers to the interference caused by electromagnetic waves generated by various electrical equipment, electronic devices, navigation systems, etc. during their operation on the surrounding environment. Structure of carbon fiber shielding layer
The carbon fiber shielding layer is usually composed of carbon fiber, resin, and other materials. Among them, carbon fiber is the main
Conductive materialsIt can emit electromagnetic interference signals onto carbon fiber polymer fibers and transmit them to the carbon fiber matrix through resin, thereby absorbing the electromagnetic interference signals.
Application scenarios of carbon fiber shielding layer
Carbon fiber shielding layers have wide applications in fields such as electronics, aviation, and aerospace. For example, in the field of electronics, carbon fiber shielding layers can be used as shielding layers to prevent electromagnetic interference from affecting equipment and personnel. In the aviation field, carbon fiber shielding layer can be used as a shielding layer to reduce electromagnetic interference generated by internal equipment of the aircraft. In the aerospace field, carbon fiber shielding layers can be used as protective layers to protect satellites and spacecraft from electromagnetic interference.
In addition, the carbon fiber shielding layer also has other characteristics. For example, carbon fiber shielding layers typically have high strength and stiffness, and can withstand harsh environmental conditions such as high temperature and high pressure. In addition, carbon fiber polymer fibers have excellent electromagnetic shielding and fatigue resistance, which can maintain their electromagnetic shielding performance for a long time.
