1. Insulation resistance and resistivity

Resistance is the reciprocal of conductance and resistivity is the resistance per unit volume. The smaller the conductivity of the material is, the greater its resistance is. The reciprocal relationship between them is always expected to be as high as possible for insulating materials.

2. Breakdown Voltage and Electrical Intensity

In a strong electric field, the insulation material is damaged, and the loss of insulation property becomes a conductive state, which is called breakdown. The breakdown voltage is called the breakdown voltage (dielectric strength). Electrical strength is the quotient of the distance between the voltage and the two electrodes withstanding applied voltage when breakdown occurs under specified conditions, that is, the breakdown voltage withstanding per unit thickness. PVC insulating tape tells you that for insulating materials, the higher the breakdown voltage and electrical strength, the better.

3. Tensile Strength

It is the maximum tensile stress of the specimen in the tensile test. It is the most widely used and representative test of mechanical properties of insulating materials.

4. Combustibility

The ability of an insulating material to resist combustion when exposed to a flame or to prevent continued combustion when leaving the flame. With the increasing application of insulating materials, it is more important to require their combustibility. People improve and improve the combustibility of insulating materials by various means. The higher the combustion resistance, the better the safety.

5. Relative dielectric constant and dielectric loss tangent

Insulating materials are used for two purposes: mutual insulation of various parts of the network and medium (energy storage) of capacitors. The former requires a relatively small dielectric constant, while the latter requires a relatively large dielectric constant. Both require a small dielectric loss tangent, especially for insulating materials used at high frequencies and high pressures. In order to reduce dielectric loss, a small dielectric loss tangent is required.

6. Arc Resistance

The ability of an insulating material to withstand arc action along its surface under specified test conditions. In the test, the arc resistance of insulating materials is judged by the time required for the formation of conductive layer on the surface of insulating materials through the arc action between the two electrodes under AC high voltage and small current. The greater the time value, the better the arc resistance.

7. Sealing

It is better to seal and isolate oil and water quality.

These are the reasons why PVC insulating tape affects the performance of insulating materials.