High-refractive-index epoxy acrylate optical resin and preparation method thereof

Abstract

The invention discloses a high-refractive-index epoxy acrylate optical resin. The high-refractive-index epoxy acrylate optical resin is composed of raw materials including, by weight part, 50-65 partsof tetrabromobisphenol A epoxy resin, 9-14 parts of acrylic acid, 0.1-0.5 part of ring-opening catalysts, 0.05-0.15 part of polymerization inhibiting catalysts and 20-30 parts of crosslinking agent.The preparation method of the high-refractive-index epoxy acrylate optical resin comprises mixing and dissolving the acrylic acid, the ring-opening catalysts and the polymerization inhibiting catalysts to obtain a mixed solution; in a nitrogen atmosphere, heating the tetrabromobisphenol A epoxy resin in a reactor to 90-110 DEG C to a dissolved sate, stirring mixing the dissolved tetrabromobisphenol A epoxy resin, preserving heat and dropwise adding in the mixed solution within 3-4 hours, and performing thermal reaction for 1-3 hours; cooling down to 80-90 DEG C, uniformly mixing in the crosslinking agent, reducing the temperature to below 50 DEG C, and performing discharging to obtain the high-refractive-index epoxy acrylate optical resin. The high-refractive-index epoxy acrylate optical resin can improve the refractive index and achieve an excellent refractive index and excellent optical performance, and meanwhile, is light in color and high in transparency.

Description

technical field [0001] The invention relates to the field of epoxy acrylic resin, in particular to a high refractive index epoxy acrylic optical resin. Background technique [0002] In recent years, epoxy optical resin has become a popular new optical resin. It contains two or more epoxy groups, with aliphatic, alicyclic or aromatic organic substances as the skeleton, and forms a polymer product through the reaction of epoxy groups. It has good heat resistance and solvent resistance, low creep, low birefringence and moisture permeability, and is suitable for application in the optical field. Brominated epoxy acrylic resin is a thermosetting resin, which has the excellent characteristics of epoxy resin, because the introduction of bromine atoms increases the refractive index, and at the same time, the introduction of acrylic acid groups makes it more prominent in terms of curability and formability, unlike As cumbersome as epoxy. It has excellent water resistance, hot wate...

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Problems solved by technology

[0003] At present, brominated epoxy acrylic resin has been used in the direction of optical resin, but the products mainly rely on imports. At present, there is no domestic company for independent production, which increases the production cost of related enterprises. In addition, this structure has certain volatility, which is very easy to fluctuate. The stability of downstream production, which limits the development of related enterprises to a certain extent

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