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Method for preparing optical material with high refractive index by using amino polybasic thioalcohol to solidify epoxy resin

A technology of curing epoxy resin and high refractive index, which is applied in the direction of optics, optical components, instruments, etc., can solve the problem of less epoxy curing agent, and achieve the effect of wide application range and excellent curing effect

Inactive Publication Date: 2003-02-05
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But, only focus on the synthesis of sulfur-containing epoxy monomers in previous studies, less research on epoxy curing agents (Kinmura hoosin.CN1046741A, 1990), most of the curing agents used are common amines

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment one: curing epoxy 618 resin (DGEBA) with triethylene mercaptan amine

[0027] After mixing triethanethiol amine and epoxy 618 resin in equal amounts, vacuumize and degas at 40°C until there are no bubbles, and inject it into a glass mold with a plastic tube (the glass piece should be treated with a release agent) ; Then put it in an oven, cure at 60°C for 0.5h, cure at 80°C for 4h, then rise to 120°C at a speed of 10°C / 20min and cure for 1h, close the oven after curing, cool naturally to room temperature, and demould to obtain the resin sheet. The performance characterization of the obtained resin sheet is obtained in the following table;

[0028] n d 20

[0029] In the table: n d 20 is the refractive index; ν d is the Abbe number; ρ density; Rwa is the water absorption of the sample; IPS is the impact strength; hard is the surface hardness (pencil hardness) of the sample; T% is the light transmittance; US is the ultraviolet cut-off wavel...

Embodiment 2

[0031] Triethanethiolamine can also be mixed with other curing agents, and the properties of the cured resin can be adjusted by adding other curing agents. We use triethanethiol amine and ethylenediamine mixed curing agent to cure 618 epoxy resin to improve the T of the cured material g . The properties of ethylenediamine and ethylenediamine are similar, and they can both be used as mixed curing agents. Ethylenediamine and ethylenediamine can be interchanged when used.

[0032] Here the total amount of curing agent and the epoxy resin are equivalent, and the consumption of ethylenediamine is calculated as the percentage of ethylenediamine in the total curing agent.

[0033] Mix triethanethiol amine and ethylenediamine according to a certain ratio, and then mix them with epoxy 618 resin in an equivalent amount, then vacuumize and degas until there are no bubbles at room temperature, and inject it into a glass mold with a plastic tube (The glass sheet should be treated with a ...

Embodiment 3

[0036] 3,3'-dimercaptodiphenylsulfone epoxy resin was cured with triethanethiolamine. After mixing triethanethiolamine and 3,3'-dimercaptodiphenylsulfone epoxy resin in equal amounts, vacuumize and degas until there are no bubbles at room temperature, and inject it into a glass mold with a plastic tube (glass The sheet should be treated with a release agent); then put it in an oven, cure at 60°C for 0.5h, cure at 80°C for 4h, then rise to 120°C at a speed of 10°C / 20min for 1h, close the oven after curing, and let it cool naturally until Room temperature, demoulding, the resin plate is obtained. The properties of the obtained resin sheet were characterized to obtain the following table.

[0037] n d 20

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PUM

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Abstract

The present invention relates to a method for preparing high refractive-index optical material by using nitrogen-containing polybasic thioalcohol amine (N-methyl diethyl thioalcohol amine or triethyl thioalclhol amine) solidifying epoxy resin with high refractive index. The polybasic thioalcohol amine can be made up by using polybasic alohol amine through the processes of chlorination, sulfurization and hydrolysis reaction. Said polybasic thioalcohol amine can be used individually or can be used together with other ethylene diamine or condensed ethylenediamine solidifying agent. The refractive index of the material obtained by solidifying general bisphenol A with triethyl trialcohol amine is up to 1.6145, light transmittance is up to 90.37 and impact strength is up to 57 KJ / sq.m.

Description

Technical field: [0001] The invention relates to a synthesis method of a novel high-refractive-index epoxy resin, in particular to a method for preparing high-refractive-index optical materials by curing the epoxy resin with amino polythiol. technical background: [0002] The current methods for preparing optical resins with high refractive index mainly include the following: (1) synthesis of sulfur-containing unsaturated monomers, which are polymerized by free radical polymerization to obtain crosslinked optical resin materials; (2) synthesis of polythiols and Sulfur-based isocyanates are polymerized in equivalent amounts to obtain polyisocyanate-based optical resin materials; (3) synthesize sulfur-containing epoxy and episulfide monomers, and cure them with a curing agent to obtain epoxy and epoxy resins. Sulfur-based optical resins. [0003] In the above method, the method of synthesizing sulfur-containing epoxy and episulfide monomers and curing them with curing agents ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/66G02B1/04
Inventor 崔占臣吕长利杨柏
Owner JILIN UNIV
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