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Master Bond Formulates Optically Clear, Room Temperature Curing Epoxy

Published on 2016-09-13. Author : SpecialChem

Master Bond EP30-2LB
Master Bond EP30-2LB
Master Bond has developed EP30-2LB, an optically clear and a two part system with a refractive index of 1.55. It is formulated for specific optical applications.

Blocks UV Light Transmission


Master Bond EP30-2LB blocks UV light from 200-400 nm and allows the transmission of visible light from 450-900 nm. It also passes ASTM E595 testing to meet NASA low outgassing specifications.

Properties of EP30-2LB


  • A reliable structural adhesive with a tensile lap shear strength of 3,000-3,200 psi and a compressive strength of 14,000-15,000 psi.
  • It bonds well to a wide variety of substrates including metals, composites, glass, ceramics, rubbers and plastics. 
  • The epoxy has a ten to one mix ratio by weight and flows smoothly and evenly, enabling it to be used for coating, sealing and encapsulation applications. 
  • It is a capable electrical insulator, is dimensionally stable and has low shrinkage upon cure. This material also is easily machineable.

More about EP30-2LB


  • EP30-2LB resists chemicals including water, oils, fuels, acids and bases and many solvents. It is serviceable from -80°F to +300°F [-62°C to +149°C]. 
  • This compound has a shelf life of one year at room temperature in its original, unopened containers. 
  • It is available for use in ½ pint, pint, quart, gallon and 5 gallon container kits as well as gun dispensers.

About Master Bond

Master Bond Inc. formulates the highest quality products and offers unmatched technical advice and customer support. Its product line consists of advanced adhesives, sealants, coatings, potting/encapsulation compounds and impregnation resins. Each compound is designed to meet specific application needs and requirements. Master Bond manufactures over 3,000 grades of specially designed formulations. The company offers replacements for competitors' discontinued products.

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Source: Master Bond
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