Posted to News on 17th Mar 2025, 11:30
Medical Grade, Dual Curable Adhesive Offers Rapid Fixturing with LED Light
Master Bond LED415DC90Med is a one component, dual cure adhesive system designed for high-speed manufacturing of medical electronic devices. It cures rapidly without oxygen inhibition upon exposure to 405 nm LED light, followed by a short 30-45 minute heat cure at 90-95degC, making it well-suited for bonding heat sensitive components.
LED415DC90Med passes ISO 10993-5 requirements for non-cytotoxicity and resists common medical sterilants, including glutaraldehyde, peracetic acid, ethylene oxide, and gamma radiation.
Unlike conventional dual cure adhesives that limit light penetration to approximately 1 mm, LED415DC90Med can partially cure or fixture sections up to 6 mm deep when exposed to 405 nm LED light at the appropriate intensity and for a sufficient duration. This deeper cure capability enables the fixturing of opaque components by allowing light penetration through the adhesive from the sides. A subsequent cure at 90-100degC for 30-60 minutes is recommended to optimise strength and overall performance.
LED415DC90Med has a thixotropic index of 5.53 at room temperature. It exhibits a tensile strength of 5,500-6,500 psi, a tensile modulus of 450,000-550,000 psi, and a lap shear strength exceeding 1,000 psi (aluminium to aluminium). This rigid system cures to a Shore D hardness of 85-90 with an elongation of 1-3% at 75degF. It is serviceable from -80degF to +350degF, electrically non-conductive (volume resistivity greater 1014 ohm-cm), and bonds well to a variety of substrates, including plastics, glass, and metals. LED415DC90Med is available in syringes, half pint, pint and quart containers.
