Dielectric strength refers to the measurement of the electrical strength of a material as an insulator. It is defined as the maximum voltage per unit thickness when the sample is punctured, expressed as volts per unit thickness. The greater the Dielectric strength of the material, the better the quality of the material as an insulator.
Dielectric strength is a measure of the ability of a material to withstand high voltage without producing Electrical breakdown. Place the sample between electrodes and raise the applied voltage through a series of sequences until Electrical breakdown occurs, until Electrical breakdown occurs. The result is in kv/mm units, but it does not mean that it has nothing to do with the thickness of the sample. Therefore, as long as the data of various materials are obtained under the condition that the thickness of the sample is the same, it is comparable.
The dielectric constant is used to measure the performance of an insulator in storing electrical energy. It is the ratio of the capacitance between two metal plates using insulating material as the medium to the capacitance between the same plate using air as the medium or vacuum. The dielectric constant represents the polarization degree of the dielectric, that is, the ability to bind charges. The larger the dielectric constant, the stronger the ability to bind charges. The medium filled between the two plates of the capacitor has an impact on the capacity of the capacitor, But the same dielectric has the same effect, with different media and different dielectric constants.