Raw material for preparing lens with good safety

Abstract

The invention discloses a raw material for preparing a lens with good safety. The raw material comprises the following components in parts by weight: 36-62 parts of ethyl acrylate, 10-15 parts of isocyanate, 8-15 parts of ethyl silicate, 4-9 parts of cubic boron nitride powder, 2-4 parts of lithium nitrate powder, 2-5 parts of strontium carbonate powder, 10-18 parts of isopropanol and 80-130 parts of deionized water. Monomers are mixed with ethyl acrylate, isocyanate and ethyl silicate, matched with ground cubic boron nitride powder, lithium nitrate powder and strontium carbonate powder mixed powder and finally stirred and mixed in isopropyl alcohol and deionized water, the lens raw material is prepared, the light transmittance and abrasion resistance are improved, the lens curing quality is guaranteed, the reject ratio is reduced, and safety is good.

Description

technical field [0001] The invention belongs to the technical field of optical lenses, and in particular relates to a raw material for preparing lenses with good safety. Background technique [0002] In addition to inorganic glass, the current materials used for spectacle lenses, the research and development of using synthetic resins with excellent optical properties as lens materials are constantly developing, and there is a trend to gradually replace traditional lens materials. Compared with inorganic glass lenses, resin lenses are characterized by light weight, high transparency, large lens size, impact resistance, easy processing and molding, and can be dyed. Resin sheets are in a priority position in the eyewear market competition. According to reports, in 1988, optical resin lenses accounted for 65% in the United States and about 55% in Japan. About 85% to 90% of the 32 million people who wear glasses in Japan recently choose resin lenses. Synthetic resin optical ...

AI Technical Summary

Problems solved by technology

[0003] However, optical resin materials widely used in the market, such as polymethyl methacrylate (PMMA), CR-39, etc., have a low refractive index (nD<1.50), and the traditional optical resin with the highest refractive index PS can only reach nD=1.590, and the overall performance is not very ideal, which limits the application range of the material