EP54TC

Master Bond EP54TC is a thermally conductive, electrically insulating two part epoxy that combines good physical properties and the ability to transfer heat rapidly and effectively. EP54TC has a forgiving 100 to 5 mix ratio by weight. The working life ranges from 60-90 minutes. The epoxy requires heat for curing. One option is 80°C for 2 hours followed by 2-4 hours at 90-125°C. An alternative cure schedule would be 4-6 hours at 80-90°C. Upon curing, the hallmark of this system is its combination of outstanding thermal conductivity, good electrical insulation, and superb temperature resistance. It is used primarily for bonding.

A special feature of this material is its small particle fillers ranging in size from 5 to 30 microns. This allows the epoxy to be applied in especially thin sections resulting in very low thermal resistance and more efficient heat transfer. The thermal resistance is 5-7 x 10^-6 K•m²/W, indicating that the epoxy is highly effective at transferring heat.

The system bonds well to a wide variety of substrates, including metals, composites, glass, ceramics and many plastics. Other properties include a very low coefficient of thermal expansion, low shrinkage upon curing and exceptional dimensional stability. It resists water, fuels, oils and many acids and bases. The temperature range is -100°F to +400°F. The color of Part A is gray and Part B is amber clear. This special system can be used in the aerospace, electronic, optical, and specialty OEM industries, for bonding and sealing applications where high thermal conductivity and electrical insulation are needed.

Product Advantages

• Combines very high thermal conductivity and robust electrical insulation
• Paste consistency
• Low coefficient of thermal expansion
• Low thermal resistance