Insulating materials with different properties are required in electrical, thermal, mechanical and chemical applications.
Figure 6.13 Real and imaginary parts of dielectric constant with frequency of alternating voltage: (a) Upto microwave region and (b) At optical frequencies
Figure 6.14 Variation of polarizability with frequency of alternating voltage
(a) Electrical requirements
High-resistivity insulating materials are required to reduce leakage current. To withstand at high voltages, high dielectric ...