Master Bond has released its EP21ARHTND-2 two-part epoxy adhesive, designed to withstand prolonged exposure to a wide range of chemicals.
Although EP21ARHTND-2 is capable of curing at room temperature, to optimize its acid resistance properties, a cure schedule of overnight at ambient temperatures, followed by a heat cure of 150°F to 200°F for two to four hours or longer is typically recommended.
It is a reliable electrical insulator with a volume resistivity greater than 1014 ohm-cm at 75°F, and dielectric strength of 440 volts/mil at 75°F for a 1/8-inch test specimen. Other noteworthy properties include a tensile strength of 9,000-10,000 psi, and a Shore D hardness of 75-85. The adhesive provides good heat resistance and is serviceable from -60°F to +400°F.
EP21ARHTND-2 does not contain solvents and is RoHS compliant. The product bonds well to metals, ceramics, composites, rubbers and plastics. It features a smooth paste-like consistency and will not flow, or sag once applied, making it ideal for bonding and sealing applications. It is available for use in ½ pint, pint, quart and gallon container kits. Specialty packaging can also be provided in 50 ml (cc) double barrel cartridges, which not only eliminates the need for manual measuring as well as mixing, but also enables the possibility of manual or automated dispensing.
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