Insulation materials are a crucial category of materials in the field of electrical engineering, with primary functions including electrical insulation, mechanical protection, thermal insulation, fire resistance, moisture resistance, shock resistance, and corrosion resistance. These materials typically possess characteristics of high resistance and low conductivity, effectively isolating or separating conductors in electronic equipment to ensure that electric current does not flow through. The selection and application of insulation materials are vital for the safety, reliability, and performance of electrical equipment.