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Megapoxy E is a specialized liquid epoxy resin designed for high-voltage encapsulation and casting of electrical switchgear components. This Bisphenol-A based system offers a pourable viscosity that eliminates air gaps, ensuring a high dielectric strength of up to 19KV/mm to prevent arcing in power transformers and coils.
By selecting Hardener 155, manufacturers can extend the service temperature ceiling to 150°C with a Martins Heat Distortion Temperature of 127°C, maintaining insulation integrity under extreme thermal stress. The cured matrix provides an ultimate compressive strength of up to 100 MPa, delivering the mechanical durability required to withstand physical impact and environmental sealing against moisture or contaminants.
To ensure maximum chemical bond strength, all casting surfaces must be cleaned with acetone or isopropyl alcohol, as inadequate preparation like wire brushing will lead to bond inhibition and insulation failure.
Frequently Asked Questions About Megapoxy E
- What is the maximum service temperature for Megapoxy E? - Up to 80°C with Hardener E, and up to 150°C with Hardener 155.
- How do I prepare surfaces for bonding? - Clean with acetone or isopropyl alcohol.
- What is the mixing ratio for Megapoxy E? - Refer to the technical data for specific hardener ratios.
Use Megapoxy E for:
- Encapsulation of instrument transformers.
- Casting lighting transformers.
- Encapsulating small power transformers.
- Coil encapsulation.
- Electrical switchgear component casting.
- Mechanical and chemical resistant applications.
Why Use Megapoxy E:
- Provides high impact resistance.
- Ensures superior electrical insulation.
- Offers excellent mechanical strength.
- Suitable for a range of service temperatures.
- Delivers reliable chemical resistance.
- Provides strong and durable bonds.
How to apply Megapoxy E:
- Thoroughly clean and prepare the surfaces to be bonded.
- Accurately measure the resin and hardener according to the specified mixing ratio.
- Mix the components thoroughly until a uniform consistency is achieved.
- Pour or apply the mixed epoxy into the mold or onto the surfaces to be bonded.
- Allow the epoxy to cure for the specified time at the recommended temperature.
- Clean tools and equipment with Megapoxy Thinners.
Megapoxy E limitations:
- Not suitable for applications requiring flexibility.
- Inadequate surface preparation will result in poor adhesion.
- Wear appropriate PPE, including gloves and eye protection.
- Ensure adequate ventilation during application.
Megapoxy E can be used on the following substrates:
- Metals
- Plastics
- Ceramics
- Other electrical component materials
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