Photochromic composition product suitable for EB curing and preparation method thereof

Abstract

The invention provides a photochromic composition product suitable for EB curing and a preparation method thereof, the photochromic composition product comprises polyol, acrylate diol, diisocyanate, a catalyst, a polymerization inhibitor, a diluent, photochromic powder, an antioxidant, an ultraviolet absorber, a leveling agent and a defoaming agent, a photochromic composition is obtained, a substrate material is coated with the photochromic composition, and through infrared lamp radiation, under the protection of nitrogen, EB radiation curing is carried out to form a film. According to the invention, carbon-carbon double bonds of acrylate are introduced into a polyurethane system, a plurality of flexible structures and a plurality of rigid structures are simultaneously grafted on a molecular chain segment by a prepolymerization method, and finally, the photochromic composition is well attached to the surface of a transparent substrate through EB radiation curing. The damage of ultraviolet light to the photochromic powder is avoided, and the coating curing time is shortened, so that the qualified rate of finished products is increased, and the production cost is reduced.

Description

technical field

[0001] The invention belongs to the field of optical films, and in particular relates to a photochromic composition suitable for EB curing and a preparation method, which is mainly used in the production and processing of color-changing glasses and color-changing films. Background technique

[0002] At present, there are two types of color-changing glasses on the market. One is the color-changing of the base material, which is to dissolve the photochromic powder in the resin or monomer, and then pour it into the mold and cure it at high temperature. This process has the following defects: 1) When the color changes, the depth of the color change is different, and the vision of panda eyes is easy to appear, which brings extremely bad visual experience to customers; 2) When preparing semi-finished products, many color-changing powders are polished in the semi-finished products 3) Due to the limitation of raw materials, this process can only produce 1.56 and 1.61...

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