Master Bond EP54TCMed is a thermally conductive, electrically insulating two part epoxy that combines good physical properties and the ability to transfer heat rapidly and effectively. EP54TCMed 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. EP54TCMed passes ISO 10993-5 for medical related applications.
Upon curing, the system features outstanding thermal conductivity, good electrical insulation, and superb temperature resistance. 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. EP54TCMed has good resistance to medical sterilants such as gluteraldehyde, peracetic acid, as well as EtO, gamma radiation, among others. The temperature range is -100°F to +400°F. The color of Part A is gray and Part B is amber clear. This specialty system can be used in medical applications where high thermal conductivity, low thermal resistance and electrical insulation are desirable.