Medium-high refractive index optical resin lens and preparation method thereof

An optical resin lens, high refractive index technology, used in optics, optical components, instruments, etc., can solve the problems of serious environmental pollution, average impact strength, poor impact strength of high refractive index optical resin, etc.

Inactive Publication Date: 2020-04-21
郯城博化化工科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to pursue a high refractive index, episulfides are gradually synthesized for high refractive index polyurethane optical resins, but they are more toxic and pollute the environment more seriously, and the impact strength o

Method used

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  • Medium-high refractive index optical resin lens and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Mix 20.0g 2,3-dithio(2-mercapto)-1-propanethiol, 0.008g dibutyltin dichloride, and 0.028 g release agent evenly, then mix 20.7g xylylene diisocyanate, Mix 0.004g of antioxidant, stir evenly in vacuum, then vacuum degassing, mix the components mixed for the first time with the mixture for the second time, stir and degas in vacuum for 60min, mix the mixture after vacuum degassing The liquid is injected into the glass mold, and the first curing is carried out according to the heating program. After molding, the mold is demoulded to obtain a colorless and transparent lens substrate, and then the second curing is carried out. Its refractive index is 1.656, its thermal decomposition temperature is 300.8°C, and its impact strength is 15.4kJ / m 2 .

[0031] Infrared spectrum analysis: after polymerization, 2259cm- 1 The N=C=O stretching vibration peak at 3290cm- 1 The absorption peak of the N-H bond appeared at , due to hydrogen bonding, the position of the N-H bond peak shif...

Embodiment 2

[0033] Mix 30.0g of 2,3-dithio(2-mercapto)-1-propanethiol, 0.013g of dibutyltin dichloride, and 0.052 g of release agent, and then mix 34.9g of cyclohexanedimethylene di Mix isocyanate and 0.004g antioxidant, stir in vacuum evenly, then vacuum degassing, mix the first mixed component with the second mixed liquid, vacuum stir and degas for 60min, vacuum degassing The mixed liquid is injected into the glass mold, and the first curing is carried out according to the heating program. After molding, the mold is demoulded to obtain a colorless and transparent lens substrate, and then the secondary curing is carried out. Its refractive index is 1.618 and its impact strength is 21.7kJ / m 2 .

Embodiment 3

[0035] Mix 30.0g 2,3-dithio(2-mercapto)-1-propanethiol, 0.012g dibutyltin dichloride, and 0.048 g release agent, and then mix 30.3g hexamethylene diisocyanate, 0.004 g antioxidants were mixed, vacuum stirred evenly, and then vacuum defoaming was carried out, the first mixed component was mixed with the second mixed liquid, vacuum stirred and degassed for 60 minutes, and the mixed liquid after vacuum defoaming was injected into the Put it into the glass mold, carry out the first curing according to the heating program, and demould after molding to obtain a colorless and transparent lens substrate, and then carry out the second curing. Its refractive index is 1.609 and its impact strength is 47.4kJ / m 2 .

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Abstract

The invention provides a medium-high refractive index optical resin lens and a preparation method thereof. The invention aims to provide the preparation method of the medium-high refractive index resin lens adjusted in a range of 1.59 to 1.67, to meet requirements on different high-refraction polymers. Compared with the prior art, a medium-high refractive index polymer provided by the invention isexcellent in comprehensive performance, the optical resin lens with the refractive index as high as 1.67 and higher impact strength and heat resistance is prepared by adjusting the variety and proportion of raw materials, and particularly, the preparation method is simple and convenient, lower in cost and easy for industrial production. The resin is prepared from the following raw materials: oneor more polyisocyanates and one or more polythiol compounds which are added according to a ratio of 0.7:1 to 1.5:1, a phosphate release agent accounting for 0.02%-2% of the total mass, an organic tincatalyst accounting for 0.02%-2% of the total mass, and an antioxidant accounting for 0.02%-2% of the total mass.

Description

technical field [0001] The present invention relates to the technical field of optical resin, more specifically, relates to a medium-high refractive index optical resin lens and a preparation method thereof, which has good heat resistance and impact strength, and the refractive index of the optical resin can be between 1.59 and 1.67 change between. Background technique [0002] Compared with optical glass, optical resin has the advantages of light weight, impact resistance, easy processing and molding, easy dyeing, and molecular designability. Once launched, it will soon replace optical glass and become the mainstream product of spectacle lenses, and it is widely used in many fields. It has replaced inorganic glass and is widely used in building materials and optical components, such as lenses, prisms, optical discs and optical fibers. [0003] At present, the optical materials available on the market for resin lenses usually include polymethyl methacrylate (PMMA), polycarb...

Claims

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Application Information

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IPC IPC(8): C08G18/38C08G18/08G02B1/04
CPCC08G18/08C08G18/3855G02B1/041
Inventor 李佳林贾亚亚金君素
Owner 郯城博化化工科技有限公司
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