Electronic Products & Technology

LED curable adhesive with a fluorescent dye is flexible

September 27, 2021  Stephen Law

MASTER BOND LED405FL3 flexible one component, LED curing adhesive system deliver high optical clarity and a refractive index of 1.51. Product’s flexibility allows for stress minimization especially when bonding substrates with different coefficients of thermal expansion. It also utilizes a fluorescent dye for detection purposes, which enables easy visual inspection. 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 30-45 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. Product is serviceable from -100°F to +250°F. It cures with a hardness of around 5-15 Shore D at room temperature. Additional performance properties include electrical insulation as well as resistance to thermal cycling, shock and vibration.

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