1. Definition

Insulation material laminated products are composite materials formed by impregnating multiple layers of insulation substrates (such as paper, cotton cloth, glass fiber cloth, etc.) with synthetic resins (such as phenolic resin, epoxy resin, organic silicon resin, etc.), and then hot pressing and curing them. This type of material has excellent electrical insulation performance, mechanical strength, and heat resistance, and is widely used in electrical equipment, electronic components, and power systems.

2. Main components

Substrate: Provides mechanical support and insulation properties, such as insulation paper, cotton cloth, fiberglass cloth, polyester film, etc.

Resin: As an adhesive, it enhances the heat resistance and insulation properties of materials, such as phenolic resin, epoxy resin, polyimide resin, etc.

Additives: such as flame retardants, moisture-proof agents, etc., to enhance the special properties of materials.

3. Common types

Types, Main Components, Characteristics, Typical Applications

Phenolic laminates made of paper/cotton cloth and phenolic resin have low cost, good mechanical strength, and are resistant to arc switches and wiring terminals

Epoxy Glass Cloth Laminated Plates: Glass fiber cloth+epoxy resin with high mechanical strength, high temperature resistance, chemical corrosion resistance PCB substrate, motor insulation

Silicone laminates made of glass cloth and silicone resin are resistant to high temperatures (above 200 ° C) and have good flexibility. They are suitable for high-temperature motors and aerospace insulation

Polyester film laminates: Polyester film+adhesive, lightweight, moisture resistant, good dielectric properties, capacitors, flexible circuits

4. Main performance characteristics

Electrical performance: high dielectric strength, low dielectric loss, suitable for high-voltage insulation.

Mechanical performance: resistant to bending and impact, suitable for structural support components.

Heat resistance: Different resin systems have different temperature resistance levels (such as epoxy resin up to 130 ° C and silicone up to 200 ° C or above).

Chemical resistance: Some laminated products are resistant to oil, acid, and alkali, making them suitable for harsh environments.

5. Application Fields

Power equipment: transformer insulation, circuit breaker baffle, insulation sleeve.

Electronics industry: printed circuit boards (PCBs), insulation pads.

Motor and electrical appliances: motor slot wedges, winding insulation.

Aerospace: High temperature resistant insulation components.

6. Corresponding terms in English

Laminated insulating materials

Phenolic laminate

Epoxy glass laminate

Silicone resin laminate

This type of material is made through lamination processes such as hot pressing, and can be customized in thickness, shape, and performance according to requirements. It is one of the key materials in the field of electrical insulation.