Master Bond EP4CL-80Med is a one-part, optically clear epoxy developed for use in medical device assembly applications. It withstands repeated sterilization cycles and passes ISO 10993-5 testing for non-cytotoxicity. As a one-part, non-premixed and frozen system, it contains no solvents and has an “unlimited” working life at room temperature.
Suitable for bonding, sealing, impregnating, and coating, this new epoxy provides a high-glass transition temperature of 155-160°C, and has an extremely low viscosity of 50- to 50 cps at 25° C. This allows it to be applied by brushing, spraying, and spin coating.
This product cures at moderate temperatures of around 80° to 85° C within 60 to 90 minutes, and faster at slightly higher temperatures.
EP4CL-80Med provides notable strength properties including a compressive strength of 12,000 to 14,000 psi and a high-tensile modulus of 450,000 to 500,000 psi at room temperature. It’s serviceable over the temperature range of -62° to +232° C.
This compound is an excellent electrical insulator with a volume resistivity of more than 1014 ohm-cm at room temperature and has a refractive index of 1.52 at 25° C.
Additionally, EP4CL-80Med has good resistance to many sterilization methods including autoclaving, dry heat, radiation, and chemical sterilants. Furthermore, it resists vaporized hydrogen peroxide, a sterilization technology from STERIS. It bonds well to a variety of substrates such as metals, composites, ceramics, and many plastics. Packaging is available in jars and cans, as well as syringes.