Optically clear epoxy blocks UV light only

September 19, 2016 // By Julien Happich
Formulated for specific optical applications, Master Bond's EP30-2LB blocks UV light from 200-400 nm and allows the transmission of visible light from 450-900 nm.

The two part system is optically clear with a refractive index of 1.55. It also passes ASTM E595 testing to meet NASA low outgassing specifications. Beyond its optical properties, EP30-2LB is 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. This 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. EP30-2LB resists chemicals including water, oils, fuels, acids and bases and many solvents. It is serviceable from -62°C to +149°C.

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