High-refractive-index OCA optical adhesive

Abstract

The high-refractive-index OCA optical adhesive comprises an acrylate polymer, and the acrylate polymer comprises the following components in parts by mass: 0.5-2 part of acrylic acid, 2-4 parts of isobornyl acrylate, 2-3 parts of methyl methacrylate, 2-3 parts of 2-phenoxyethyl acrylate, 0.5-2 part of styrene, 1-3 parts of ethyl acetate, 3-5 parts of N-hydroxymethyl acrylamide, 0.1-0.3 part of 2-hydroxyethyl methacrylate, 0.1-1 part of hydroxyethyl acrylate, 4-6 parts of ethoxydiphenyl fluorene diacrylate, 1-3 parts of ethyl(10)-bisphenol S diacrylate, 5-15 parts of hydroxybutyl acrylate, 3-7parts of 2-ethylhexyl acrylate, 0.1-0.5 part of azodiisobutyronitrile, 0.1-0.5 part of dibenzoyl peroxide, 40-60 parts of ethyl acetate, 5-15 parts of methylbenzene and 0.1-2 part of acetone. The acrylate polymer prepared by the invention has the optical property of high refractive index and better weather resistance; acrylic acid coester with a certain refractive index range can be synthesized according to the proportion of different monomers, and OCA with a high refractive index is manufactured. The product is expanded in range of matched optical instruments.

Description

【Technical field】 [0001] The invention relates to the technical field of OCA optical glue, in particular to a high refractive index OCA optical glue. 【Background technique】 [0002] Optical resin is a class of optical materials with excellent optical properties. It can be made into optical films and used in optical lenses and different displays. It has the characteristics of transparency, light weight, and easy processing. It is widely used in the optical industry and optical display research. Dispersion and refractive index are the basic properties of optical materials. In order to reduce the volume, quality and curvature of optical lenses, improve the display performance of devices, and make liquid crystal displays brighter, the refractive index of optical materials must be increased. When using optical lenses, lenses made of high refractive index optical resin materials are thinner and lighter than lenses made of ordinary optical materials under the condition that the foc...

AI Technical Summary

Problems solved by technology

[0003] At present, the refractive index of most domestic OCA optical adhesives in the market is below 1.50, mainly including acrylate, epoxy resin, epoxy-based acrylic resin, polyurethane acrylate, etc., while there are few optical materials higher than 1.5. Therefore, OCA optical glue with high refractive index is completely dependent on imports, which does not meet the requirements of light weight and miniaturization of modern optical devices in my country, and limits the development of domestic OCA optical fields.