Posted to News on 21st Oct 2007, 19:26
Two-component elastomer offers best of both worlds
Master Bond EP30D-12 is a versatile two-component elastomer that is claimed to feature superior strength, toughness and unusually high chemical resistance. EP30D-12 combines the recognised advantageous performance characteristics of epoxy resins - such as adhesive strength and chemical resistance - with the toughness, abrasion resistance and flexibility of polyurethane. The outcome is a product with high physical strength properties, such as a 7500psi tensile strength, flexibility of 440 per cent elongation at break, superior chemical resistance, durability, low water absorption, low moisture permeability, and high hydrolytic stability.
Master Bond says its EP30D-12 product is easily processable in both thick and thin sections. Because of the low viscosity of the blended mixture, the compound flows easily and smoothly even around intricate geometries. Parts more than 25mm (one inch) thick can be cast without undue exotherm development. EP30D-12 cures with minimal shrinkage in five to six hours at ambient temperatures to a tough elastomer with remarkably good resistance to thermal cycling and chemicals including water, inorganic salts, alkalis and acids, as well as many organic chemicals.
Adhesion to metals, glass, concrete, ceramics, wood, vulcanised rubbers and many plastics is excellent over the temperature range of -50 to +120degC (-60 to +250degF). EP30D-12 is recommended for high-performance bonding, sealing, casting, potting and encapsulation applications in the electronic, electrical, construction, metalworking, automotive and chemical process industries. It is available in premixed bi-packs and cartridge/gun packaging for convenient dispensing, as well as in pint, quart, gallon and five-gallon container kits.
