PP insulating sheet arc resistance: under the specified test conditions, the insulating material's ability to withstand the arc action along its surface. During the test, AC high voltage and small current are used, and the arc action generated by the high voltage between the two electrodes is used to determine the arc resistance of the insulating material by the time required to form a conductive layer on the surface of the PP insulating sheet. The larger the time value, the better the arc resistance.
Relative permittivity and dielectric loss tangent: There are two uses for insulating materials: mutual insulation of various parts of the electrical network and the medium of capacitors (energy storage). The former requires a small relative permittivity, the latter requires a large relative permittivity, and both require a small dielectric loss tangent, especially for insulating materials used under high frequency and high voltage, in order to make the dielectric loss small, both require the use of PP insulating sheet with small dielectric loss tangent.
Flame resistance of PP insulation sheet: refers to the ability of PP insulation sheet to resist burning when it comes into contact with the flame or to prevent continued burning when it leaves the flame. With the ever-expanding application of insulating materials, the requirements for their combustion resistance become more important. People use various means to improve and enhance the combustion resistance of insulating materials. The higher the combustion resistance, the better the safety.
Tensile strength of PP insulating sheet: It is the maximum tensile stress that the sample bears in the tensile test. It is the most widely used and representative test for the mechanical properties of insulating films.
Halogen-free flame-retardant PP insulation sheet has good performance and is widely used in the following areas:
Power supply insulation, drive insulation, key insulation, TV monitor insulation, business machine insulation, lamination insulation and EMI shielding.