1.Main indicators affecting the performance of silicone rubber self-adhesive tape
Main indicators affecting the performance of silicone rubber self-adhesive tape
1. Insulation resistance and resistivity: The resistance is the reciprocal of the conductance, and the resistivity is the resistance per unit volume. The smaller the material conducts, the greater its resistance, and the reciprocal relationship between the two. For insulating materials, it is always desirable to have the resistivity as high as possible.
2. Relative dielectric constant and dielectric loss tangent: There are two uses for insulating materials: mutual insulation of various components of the electrical network and dielectric of the capacitor (storage energy). The former requires a relatively small dielectric constant, the latter requires a relatively large dielectric constant, and both require a small dielectric loss tangent, especially for insulating materials applied at high frequencies and high voltages. Insulation material with a small dielectric loss tangent.
3, breakdown voltage, electrical strength: In a strong electric field, the insulation material is destroyed, and the loss of insulation performance becomes conductive state, called breakdown. The voltage at the time of breakdown is called the breakdown voltage (dielectric strength). The electrical strength is the quotient of the voltage between the two electrodes when the breakdown occurs under the specified conditions and the voltage applied to the applied voltage, that is, the breakdown voltage per unit thickness. For an insulating material, generally, the higher the breakdown voltage and electrical strength, the better.