Biocompatible, Nanosilica Filled LED Cure Adhesive

LED405Med, an LED curing adhesive system that meets ISO 10993-5 for cytotoxicity, is used in medical device assembly

2 min read
Master Bond

Master Bond LED405Med is a one component, LED curing adhesive system used for bonding, sealing, coating and encapsulating in medical device assemblies. It is in full compliance with the ISO 10993-5 cytotoxicity standard. The system is comprised of a nanosilica filled resin, which results in both a lower shrinkage upon cure, as well as greater dimensional stability.

Biocompatible LED curing adhesiveLED405Med is an LED curing adhesive system that meets ISO 10993-5 cytotoxicity requirements and is utilized in medical device assembly.

This no-mix system cures fully tack-free upon exposure to a 405 nm wavelength light source without any oxygen inhibition. Since it does not need a UV light for curing, it is intrinsically more user friendly. In thinner sections, full cures can be achieved in 30-45 seconds. The rate of cure depends upon the intensity of the light source, the thickness of the adhesive layer and the distance from the light to the adhesive.

The compound provides a coefficient of thermal expansion of 35-40 in/in x 10-6/°C. It cures to a hardness of 65-75 Shore D, indicating that it is not too stiff. LED405Med is optically clear, with a refractive index of 1.50, and offers excellent light transmission properties. It is an electrically insulative system with a high volume resistivity of more than 1014 ohm-cm and a low dielectric constant of 4.2 at 60 Hz. It has good flowability with a viscosity of 2,000-8,000 cps. LED405Med cures up to 0.125 inch thick and is suitable for small encapsulations involving optical assemblies or other sensitive components. Serviceable from -60°F to +250°F, it withstands gamma radiation as well as various chemical sterilants including EtO.

In this video, we demonstrate how to properly apply and cure an LED curable adhesive system using a portable LED light source, using LED405Med. See how easy it is to cure and learn more about its performance properties. Watch now.

Download the complete case studies and learn how this epoxy might benefit your application.

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