Biocompatible, nanosilica filled LED curable adhesive

4th February 2019
Posted By : Alex Lynn
Biocompatible, nanosilica filled LED curable adhesive

The LED curing adhesive system from Master Bond, the LED405Med, meets ISO 10993-5 cytotoxicity requirements for use in medical device assembly. LED405Med is optically clear, with a refractive index of 1.50, and offers excellent light transmission properties. This electrically insulative system features a high volume resistivity of more than 1014 ohm-cm and a low dielectric constant of 4.2 at 60Hz.

“Since this system does not need a UV light for curing it is intrinsically more user friendly”, said Rohit Ramnath, Senior Product Engineer. “LED405Med has a nanosilica filler resulting in both lower shrinkage upon cure, as well as greater dimensional stability with a coefficient of thermal expansion of 35-40 in/in x 10-6/°C. This product cures to a hardness of 65-75 Shore D, indicating that it is not too stiff, thereby offering good toughness.”

LED405Med has good flowability with a viscosity of 2,000-8,000 cps and can be used for bonding, sealing and coating. LED405Med cures up to 0.125” thick and is suitable for small encapsulations involving optical assemblies or other sensitive components.

This no-mix system cures fully tack-free upon exposure to a 405nm wavelength light source without any oxygen inhibition. In thinner sections, full cures can be achieved in 30 to 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. LED405Med is serviceable from -60 to +250°F and withstands gamma radiation as well as various chemical sterilants including EtO.

Master Bond LED405Med is a single component, LED curing adhesive, sealant, coating and encapsulating compound for medical device assembly. This nanosilica filled system offers high optical clarity, dimensional stability and electrical insulation properties.


You must be logged in to comment

Write a comment

No comments




Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

Girls in Tech | Catalyst | 2019
4th September 2019
United Kingdom The Brewery, London
DSEI 2019
10th September 2019
United Kingdom EXCEL, London
EMO Hannover 2019
16th September 2019
Germany Hannover
Women in Tech Festival 2019
17th September 2019
United Kingdom The Brewery, London
European Microwave Week 2019
29th September 2019
France Porte De Versailles Paris