3240 Epoxy Glass Laminate Sheet

3240 Epoxy Glass Laminate Sheet is a high-strength electrical insulating material manufactured from alkali-free glass fabric impregnated with epoxy resin and cured under high temperature and pressure.

It combines excellent electrical insulation, mechanical strength, and dimensional stability, making it ideal for busbar systems, switchgear, transformers, and industrial electrical equipment operating in dry or humid environments.

Key Features of 3240 epoxy sheet：

• Reliable Electrical Insulation Performance
  3240 epoxy sheet provides stable dielectric strength and high volume resistivity, ensuring safe insulation for medium-voltage and low-voltage electrical systems.
• High Mechanical Strength
  With strong rigidity and load-bearing capacity, it is suitable not only as an insulating material but also as a structural insulating component.
• Good Thermal Stability
  Designed for continuous operation under elevated temperatures, the material maintains performance without deformation or cracking.
• Low Water Absorption in Humid Conditions
  Its low moisture absorption rate ensures consistent insulation performance even in humid or high-moisture environments.
• Easy Machining and Custom Fabrication
  The sheet can be easily cut, drilled, milled, and fabricated into customized insulation parts according to project requirements.
  

  Product Parameters：

Applications of 3240 epoxy sheet：

• Electrical Insulation for Motors & Transformers
  3240 epoxy glass laminate sheets are widely used as slot wedges, insulation supports, spacers, and washers in motors and transformers. Their high volume resistivity and dielectric strength ensure safe and stable insulation performance in high-voltage electrical environments.
• High-Voltage Switchgear & Power Distribution Equipment
  In high-voltage switches, distribution boards, and electrical cabinets, 3240 epoxy boards act as critical insulating structural components, effectively reducing the risk of arc discharge and short circuits while improving system reliability.
• Humid & Oil-Immersed Environments
  Thanks to their low moisture absorption and chemical stability, 3240 epoxy sheets maintain consistent insulation performance in humid conditions and transformer oil, making them suitable for oil-immersed transformers, underwater motors, and special electrical installations.
• PCB Manufacturing, Test Fixtures & Electronic Applications
  3240 epoxy boards are commonly used as PCB drilling pads, substrates, and reinforcing plates in electronic manufacturing. Their excellent dimensional stability and heat resistance allow them to withstand soldering processes while ensuring machining and testing accuracy in ICT fixtures and FPC reinforcement applications.
• Mechanical Fixtures, Molds & Industrial Components
  With high mechanical strength and impact resistance, 3240 epoxy sheets are ideal for mold clamping plates, fixture plates, and precision machining supports. They are also used as substrates for gears, bearing housings, and wear-resistant mechanical parts, extending equipment service life.
• Special Environment & High-Performance Applications
  3240 epoxy laminate sheets are applied in aerospace structures, marine engineering, and new energy systems. They offer reliable performance under thermal stress, chemical exposure, and corrosive environments, including applications in wind power equipment and battery insulation structures.