Factors Affecting the Use of Insulating Board Materials and Their Distinguishing Methods

Factors affecting the use of insulating board materials and their distinguishing methods
1. Insulation resistance and resistivity of insulating board materials
The resistance is the reciprocal of the conductance, and the resistivity is the resistance per unit volume. The lower the data conductivity is, the greater the resistance is, and the reciprocal relationship between them is formed. For insulation data, the resistivity is always expected to be as high as possible.
2. Relative permittivity and dielectric loss tangent of insulating board materials
There are two uses of insulation data: mutual insulation of the components of the electric network and the medium (energy storage) of the capacitor. The former needs relatively small dielectric constant, the latter needs relatively large dielectric constant, and both need small dielectric loss tangent. Especially for the insulation data used in high frequency and high voltage, in order to make the dielectric loss small, we need to select the insulation data with small dielectric loss tangent.
insulating board materials
3. Breakdown voltage and electrical strength of insulating board materials
In a strong electric field, when the insulation material breaks down and the insulation function is lost, it becomes conductive, which is called breakdown. The breakdown voltage is called breakdown voltage (dielectric strength). Electrical strength is the quotient of the gap between the voltage and the two electrodes receiving the applied voltage when breakdown occurs under regular conditions, that is, the breakdown voltage accepted per unit thickness. As for insulation data, the higher the breakdown voltage and electrical strength is, the better.
4. Tensile strength of insulating board materials
Is the tensile stress accepted by the specimen in the tensile test. It is the most widely used and representative experiment of insulation material mechanics function.
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5. Burning resistance of insulating board materials
It refers to the ability of insulation materials to burn when touching the flame or to obstruct continuous burning when leaving the flame. With the increasing use of insulation materials, the burning resistance of insulation materials is more important. Through various means, we have improved and improved the burning resistance of insulation materials. The higher the burning resistance, the better the safety.
6. Arc resistance of insulating board materials
Under regular experimental conditions, the ability of insulation data to withstand the arc effect along its surface. In the experiment, the high voltage and small current are used to distinguish the arc resistance of the insulation data by the arc effect between the two electrodes. The greater the time value is, the better the arc resistance is.
7. Sealing degree of insulating board materials
It has a good sealing barrier for oil quality and water quality.
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