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Optically clear, medical grade epoxy features a high glass transition temperature

News International-French

30 Jul 2013

Effectively used in medical device manufacturing applications, Master Bond UV10TKMed is a higher viscosity UV system for bonding, sealing and coating that passes USP Class VI testing. It also meets the requirements of ISO 10993-5 for cytotoxicity.

This one part system is optically clear and has a very high glass transition temperature that exceeds 140°C. It resists repeated sterilization, including radiation, ethylene oxide, chemical sterilants and especially autoclaving. UV10TKMed’s service temperature ranges from -60°F to +450°F. It combines dimensional stability with low shrinkage upon curing. The system is 100% reactive and does not contain any solvents or diluents.

The product cures readily in 20-30 seconds when exposed to a UV light source emitting at a wavelength of 320-365 nm with an energy output as low as 20-40 milliwatts per cm². The rate of cure depends upon the compound’s distance from the light source, the thickness of the section and the intensity of the light source. It should be noted that this system can cure in sections up to ¼ inch. However, when bonding, sections of a few thousandths of an inch are more than adequate.

It is not oxygen inhibited and therefore does not require any special treatment in that regard. It bonds well to glass, composites, surface treated metals and plastics such as polycarbonates and acrylics, among others. It is not only effective for bonding applications; it can also be used as a coating or sealant. This one part system is also a superlative electrical insulator.