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Preparation method of lens hardening liquid

A technology for adding hard liquid and lenses, applied in optics, instruments, optical components, etc., it can solve the problems of colored lines on the surface of the lens, affecting the product qualification rate, and easy yellowing on the surface of the lens, so as to achieve high anti-yellowing effect.

Active Publication Date: 2017-09-29
江苏可奥熙光学材料科技有限公司
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Problems solved by technology

Another coating process of Essilor Company in France, that is, the TITUS hardening solution contains both organic matrix and inorganic ultrafine particles including silicon elements, and adopts immersion coating process; but the above-mentioned lenses still exist : The surface of the lens is prone to yellow edges, the surface of the lens has color lines, the surface of the lens is easy to crack, the surface of the lens is easy to scratch and not wear-resistant, which greatly affects the product qualification rate

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  • Preparation method of lens hardening liquid

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Embodiment

[0017] A preparation method of hardening liquid for lenses. The whole preparation process is carried out under a nitrogen atmosphere, and after any new material is added, a nitrogen wash is required. The reaction temperature of the entire preparation process is controlled at 20-25 ° C. Specific steps are as follows:

[0018] Step (1), firstly perform a nitrogen scrubbing on the reactor, mix 20-27wt% silica sol and 1-2wt% acetic acid in proportion to obtain a premixed solution, and then add 4-5.5wt% methanol to form the first solution , the premixed solution needs to be continuously stirred for no less than 5 minutes before adding methanol. The speed of methanol addition is adjusted according to the temperature change of the first solution formed to ensure the temperature T1 of the first solution and the temperature T2 of the premixed solution. The relationship is maintained at 1°C ≤ T1- T2 ≤ 2°C; the first solution continues to stir until the pH value of the solution is betwee...

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Abstract

The present invention is a kind of preparation method of hardening solution for lenses, and the specific steps are as follows: mix 20-27wt% silica sol and 1-2wt% acetic acid in proportion to obtain a premixed solution, then add 4-5.5wt% methanol to form the first solution , continue to stir until the pH value is 4 to 5; add 19.8-20wt% propyltrimethoxysilane and 10-15wt% methyltrimethoxysilane to the first solution, and continue to stir to form the second solution; 7-8wt% ethyl Glycol ethyl ether, 9-12wt% methanol, 18-25wt% aluminum acetylacetonate, 0.1-0.4wt% additives and 0.1-0.4wt% blue pigment are put into the second solution in sequence, and the solution is stirred for 1-1.5 hours and then filtered off Solid impurities are obtained by hardening liquid; the hardening liquid is plated on the back of the lens to ensure that the lens does not have yellow edges, no color lines and is wear-resistant.

Description

technical field [0001] The invention relates to a method for preparing hardening liquid for lenses, and belongs to the technical field of optical equipment processing. Background technique [0002] Since the birth of resin lenses, manufacturers have been pursuing how to further improve the performance of light and transparent resin lenses. However, the quality of high-quality lenses is not only determined by the lens material, but its surface coating also plays a vital role. The film layer on the surface of the lens is also constantly updated. Now the domestic market mainly uses silicon dioxide film material with a refractive index of 1.46, equipped with silicone hardening liquid. After the lens is hardened, vacuum ion coating is performed, mainly for oxidation Zirconium, silicon oxide, aluminum fluoride, etc., taking the crizal composite film of Essilor Company of France as an example, the wear-resistant film with organic silicon is first coated on the base of the lens; the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D7/12G02B1/14
Inventor 周国生殷银辉
Owner 江苏可奥熙光学材料科技有限公司
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