Chemically Resistant Epoxy from Master Bond withstands a year in Sulfuric & Hydrochloric Acid!
04 March 2011
Master Bond Inc. have developed the two component epoxy for bonding, coating, lining and sealing in demanding applications. The EP21AR has exceptional chemical resistance particularly to fuels and oils and can withstand harsh acidic environments including prolonged immersion in 96-98% sulfuric acid and 36% hydrochloric acid for over a year.
With a dielectric strength of 400 volts/mil, EP21AR is a durable and stable epoxy that is also a superb electrical insulator. Its coefficient of thermal expansion is 45-55 ppm/°C, and it is serviceable from -60°F to +275°F. It produces high strength, abrasion resistant bonds with a tensile strength over 10,000 psi, a shear strength exceeding 2,700 psi, and a compressive strength greater than 14,000 psi at 75°F.EP21AR is easy to use with a forgiving 2 to 1 mix ratio by weight, and a mixed viscosity of 10,000-15,000 cps. It is 100% reactive with no solvents or diluents and can be applied smoothly in any thickness. This epoxy has a working life of 45 to 55 minutes at ambient temperature for a 200 gram batch, and cures at room temperature or faster at elevated temperatures. It bonds well to a wide variety of substrates, including metals, glass, ceramics, cements, vulcanized rubbers, wood and many plastics.
EP21AR is packaged in pint, quart, gallon and 5 gallon container kits. It is widely used in an array of industries, including oil and chemical processing, maintenance and repair, optics, metalworking, appliance, electrical and electronic.
Master Bond EP21AR is ideal for applications that require high strength, electrically insulative bonds in an acidic or corrosive environment.
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