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 Master Bond UV15-42C is a UV curable system for bonding, sealing and coating applications

Master Bond UV15-42C is a UV curable system for bonding, sealing and coating applications



Master Bond labs yield new products

The leading producer of adhesives, sealants, coatings and potting compounds has once again come up with formulations useful in a range of industries

June 2014

Among the latest developments from Master Bond laboratories is the EP46HT-1AO, formulated for bonding and sealing applications and used in the aerospace, electronic and specialty OEM industries.

Unlike most conventional two-component epoxies, EP46HT-1AO cures with the addition of heat, which allows it to have a working life exceeding 24 hours. It has a forgiving 100 to 30 mix ratio by weight and bonds well to metals, composites, glass, ceramics and many plastics.

EP46HT-1AO combines thermal conductivity and electrical insulation properties. This dimensionally stable system provides a tensile strength over 7,500 psi, a compressive strength of 26,000 psi and a tensile lap shear strength greater than 1,500 psi at room temperature. EP46HT-1AO also withstands a variety of chemicals including oils, water, acids, bases and solvents.

This unique compound is serviceable over the temperature range of -73°C to +288°C (-100°F to +550°F) and offers a glass transition temperature of 215°C. It should be noted that EP46HT-1AO is relatively exothermic and should not be cured in sections greater than 20-30 thousandths of an inch thick and a bondline thickness is typically 2-7 thousandths of an inch.

This epoxy is available in half-pint, pint, quart, gallon and five-gallon container kits. Part A of this system is tan in colour and Part B is moderately dark brown. EP46HT-1AO has a 6 month shelf life at ambient temperatures in original, unopened containers.

Master Bond EP46HT-1AO combines thermal conductivity and electrical insulation properties

Master Bond EP46HT-1AO combines thermal conductivity and electrical insulation properties

Another product that has emerged recently from Master Bond laboratories has been specially formulated to optimise bond strength – the UV15-42C. It is a UV curable system for bonding, sealing and coating applications. This smooth paste can be applied vertically without sagging. As an optically clear compound, it is often used in the fibre-optic, optical, electronic, aerospace and specialty OEM industries.

This one part system bonds well to a wide variety of substrates including glass, metals, composites, rubbers and most plastics. Adhesion to acrylic and polycarbonates is exceptional. UV15-42C also features a tensile strength of 5,000-6,000 psi and a tensile modulus of 250,000-300,000 psi at room temperature. Its toughness enables it to withstand thermal cycling as well as mechanical shock. UV15-42C is also resistant to chemicals such as water, oils, cleaning agents, acids and bases.

It cures readily in 10-30 seconds upon exposure to a UV light source emitting a 320-365 nm wavelength with an energy output of 20-40 milliwatts/cm2. UV15-42C is not oxygen inhibited and will cure in thicknesses up to a quarter inch. This electrically insulative, dimensionally stable system has low shrinkage upon curing.

UV15-42C is serviceable from -65°F to +300°F and is available for use in syringes and cartridges. It can also be purchased in ½ pint, pint and quart containers.




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