High temperature insulating paint high grade attracts much attention

Sep 12, 2022

The dielectric strength of insulating materials is a measure of the resistance of materials to high voltage without dielectric breakdown. The dielectric strength is measured by placing samples between electrodes and increasing the applied voltage through a series of steps until dielectric breakdown occurs. Although the results obtained are in kv/mm, they do not indicate that they are independent of the thickness of the specimen.

The dielectric constant of the insulating material represents the degree of polarization of the dielectric, that is, the binding capacity to the charge. The larger the dielectric constant is, the stronger the binding capacity to the charge is. The medium filled between the two electrode plates of the capacitor has an effect on the capacity of the capacitor, while the effect of the same medium is the same, and the dielectric constant is different with different mediums. The volume resistivity is the resistance per unit cubic volume of the material. This test can be carried out as follows: keep the material at 500 volts for 1 minute and measure the current generated. The higher the volume resistivity, the higher the efficiency of high temperature resistant insulating paint as electrical insulating parts.

The loss factor of insulating material also refers to the loss tangent, which is a measure of the dielectric loss (dissipated energy) of AC converted into heat energy. Generally, it is expected that the loss factor is lower.

The insulating paint with high insulation grade and high temperature resistance has attracted much attention. As a new functional paint, it is a kind of energy increasing paint that integrates insulation as the leading part, and does not block heat insulation, high temperature resistance, water, moisture, and abrasion resistance. It can be painted on any material to resist the passage of insulation shielding current under high temperature and prevent corona discharge.

High temperature resistant paint, which is both anticorrosive and insulating paint, is painted on high-temperature and high-pressure equipment. High temperature resistant ceramic insulating paint can form a ceramic coating with high volume resistivity on the surface of the coated object, which can withstand a strong electric field without being broken down. The insulating paint coating has high mechanical strength and good chemical stability, can withstand aging, water and chemical corrosion, has high thermal conductivity, is easy to release heat, and also has resistance to mechanical shock and thermal shock. The coating can work continuously at the corresponding operating temperature. High temperature resistant insulating paint adopts inorganic organic modified chelate grafting film forming solution, which is simple in construction. It is only necessary to apply a certain thickness of single coating according to different anti voltage and current conditions.