Master Bond Supreme 18TC is a single-component epoxy adhesive that contains a blend of special thermally conductive fillers. This smooth paste system can be applied in bond lines as thin as 10–15 microns. It offers an exceptionally low thermal resistance of 5-7 x 10-6 K•m2/W and a thermal conductivity of 22-25 BTU•in/ft2•hr•°F [3.17-3.61 W/(m·K)]. Heat transfer capabilities of this product are outstanding. Supreme 18TC also passes NASA low outgassing tests and can be used in applications in the aerospace, electronic, optical, specialty OEM and cryogenic industries.

Supreme 18TC maintains high bond strength properties even when exposed to hostile environmental conditions, including high or low temperatures. It bonds well to a wide variety of substrates including metals, composites, ceramics and plastics. This compound offers a tensile lap shear strength of 2,200–2,400 psi, a tensile strength of 6,000–7,000 psi, a t-peel strength of 5-10 pli and a compressive strength of 22,000–24,000 psi.

Significantly, Supreme 18TC is a one-part system that requires no mixing. Its working life is essentially “unlimited.” It requires heat curing for 60–90 minutes at 250–300° F. A post cure of a few hours at 350° F will optimize performance properties. Supreme 18TC features a low shrinkage upon curing, a low CTE and a high degree of dimensional stability. This system is also a reliable electrical insulator. Supreme 18TC is designed to withstand thermal cycling and shock. It is serviceable over the wide temperature range of 4 K to +400 °F.

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