Optical-grade epoxy

    Dec. 1, 1996

    Optical-grade epoxy

    Epo-tex OE153 optical-grade epoxy cures rapidly at room temperature. This two-component adhesive forms a bond with a lap shear strength of 1714 psi at 25°C. Coefficients of thermal expansion are 56.9 ppm/°C below Tg (glass transition temperature) and 188.7 ppm/°C above Tg. The adhesive is moisture-resistant, and withstands boiling water for 30 min with only 0.9% gain. Index of refraction is 1.5315, and UV-visible spectra results are 90% transmittance between 450 and 900 nm, and 81% transmittance at 350 nm.

    Epoxy Technology Inc., Billerica, MA

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