It is a thin plastic layer coated on metal, fabric, plastic and other substrates for protection, insulation and decoration.
High temperature electrical insulating coating
Conductors made of copper, aluminum and other metals are covered with insulating paint or plastic, rubber and other insulating sheaths. Insulating paint, plastic and rubber are all afraid of high temperature. Generally, when the temperature exceeds 200℃, they will aggregate and lose their insulating properties. And many wires need to work at high temperature. What can we do? Yes, let the high-temperature electrical insulation coating help. This coating is actually a ceramic coating. It can not only maintain the electrical insulation performance at high temperature, but also closely "combine" with the metal wire to achieve "seamless". If you bend the wires seven or eight times, they won't separate. This coating is very dense. When coated with it, two wires with large voltage difference will contact together and will not break down.
High temperature electrical insulating coatings can be divided into many types according to their chemical composition. For example, boron nitride or aluminum oxide and copper fluoride coating on the surface of graphite conductor still has good electrical insulation performance up to 400℃. The enamel on the metal wire reaches 700℃, the phosphate-based inorganic adhesive coating reaches 1000℃, and the plasma sprayed alumina coating reaches 1300℃, which still maintains good electrical insulation performance.
High temperature electrical insulation coating has been widely used in electric power, motors, electrical appliances, electronics, aviation, atomic energy, aerospace technology and other fields.