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Chemical Resistant Epoxy Withstands a Year in Sulfuric and Hydrochloric Acid

Thu, 03/31/2011 - 7:31am
two component epoxyMaster Bond’s EP21AR two-component epoxy can withstand harsh, acidic environments, including prolonged immersion in 96-98 percent sulfuric acid and 36 percent hydrochloric acid for over a year, according to the company. With a dielectric strength of 400 V/mil, this durable and stable epoxy is also a desirable 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 cps to 15,000 cps. It is 100 percent 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 g 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.

Master Bond Inc.
201-343-8983, www.masterbond.com 
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