EP21AR Product Description

Master Bond EP21AR is a two component epoxy resin compound for durable, high performance, coating liner and adhesive/sealants with outstanding acid as well as excellent overall chemical resistance. EP21AR compound which is formulated to cure at room temperature or more rapidly at elevated temperatures, with a convenient two to one non-critical mix ratio by weight, offers unsurpassed acid resistance. It can successfully withstand, for example, prolonged immersion in even 96-98% sulfuric acid and 36% hydrochloric acid for more than a year. A primary application would be as a coating and/or liner for chemical storage tanks, fuel storage tanks, chemical piping, scrubbers, chemical processing equipment, etc. EP21AR also features excellent resistance to fuels and oils. In addition, it has superb bonding strength and is an excellent adhesive especially in acid environments.

Master Bond EP21AR is 100% reactive, does not contain any solvents or diluents and cures with minimal shrinkage. It readily develops a high bonding strength of more than 2,500 psi at room temperature. Adhesion to metals, glass, ceramics, cements, wood, vulcanized rubbers, and many plastics is excellent. A non-drip version is also available.

EP21AR cures readily to produce a strong, thermoset plastic with superior electrical insulation characteristics. Color of Part A is clear; Part B is amber. This epoxy compound is widely used in the construction, maintenance and repair, chemical process, metalworking, appliance and electrical/electronic industries wherever durable, high performance, tough coatings, liners and/or adhesive sealants with outstanding acid, chemical and solvent resistance are required.

Product Advantages

• Convenient mixing: non-critical two to one mix ratio by weight.
• Easy application: 100% reactive compound does not contain any solvents or diluents and can be applied in any desired thickness: compound spreads evenly and smoothly.
• Versatile cure schedule; convenient ambient temperature cures; fast elevated temperature cures.
• High bonding strength to similar or dissimilar substrates.
• Durable, high strength, coatings, adhesive/sealants with exceptional acid and superior chemical resistance.
• Superior thermal shock resistance, good electrical insulation properties and resistance to abrasion.
• Outstanding temperature service capability from -60°F to +275°F.
• Low shrinkage, excellent dimensional stability.