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A kind of epoxy resin containing sulfone group and its synthetic method

A technology of epoxy resin and synthesis method, which is applied in the field of epoxy resin preparation and achieves the effects of high reaction efficiency, improved threshold value and prolonged storage stability

Active Publication Date: 2021-09-17
YANTAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a lack of effective methods to synthesize new epoxy resins with high reaction activation energy simply and efficiently.

Method used

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  • A kind of epoxy resin containing sulfone group and its synthetic method
  • A kind of epoxy resin containing sulfone group and its synthetic method
  • A kind of epoxy resin containing sulfone group and its synthetic method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of synthetic method containing sulfone group epoxy resin, comprises the following steps;

[0040] The raw material allyl glycidyl ether and 1,2-ethanedithiol are put into the reactor according to the molar ratio of 2:1, and benzoin dimethyl ether (accounting for the raw material allyl glycidyl ether and 1,2 -5% of the total mass of ethanedithiol) and 1,4-dioxane (accounting for 50% of the total mass of allyl glycidyl ether and 1,2-ethanedithiol), and at 3000mW / cm 2 Under the conditions of ultraviolet light irradiation and stirring, react in an ice-water bath for 1.0 hour; after the reaction, remove the solvent (1,4-dioxane) in a rotary evaporator to obtain the product;

[0041]The obtained product was dissolved in methanol of 10 times its mass, and a concentration of 30% H 2 o 2 (The number of moles of the active ingredient is 3 times the number of moles of the product) and sodium tungstate dihydrate accounting for 1% of the product mass, reacted at room temper...

Embodiment 2

[0055] A kind of synthetic method containing sulfone group epoxy resin, comprises the following steps;

[0056] Put the raw material allyl glycidyl ether and 1,3-propanedithiol in a molar ratio of 2.1:1 into the reactor, and add 2-hydroxy-1-[4-(2-hydroxyethoxy) Phenyl]-2-methyl-1-propanone (accounting for 3% of the total mass of the raw material allyl glycidyl ether and 1,3-propanedithiol) and tetrahydrofuran (accounting for the raw material allyl glycidyl ether and 1, 70% of the total mass of 3-propanedithiol), and at 1500mW / cm 2 Under ultraviolet light irradiation and stirring conditions, react in an ice-water bath for 4.5 hours; after the reaction, remove the solvent (tetrahydrofuran) in a rotary evaporator to obtain the reaction product;

[0057] The obtained product was dissolved in 1,4-dioxane (20 times the mass of the product), added peracetic acid (3 times the molar mass of the product) and magnesium sulfate (3% of the mass of the product), and reacted at room tempera...

Embodiment 3

[0065] A kind of synthetic method containing sulfone group epoxy resin, comprises the following steps;

[0066] The raw material allyl glycidyl ether and 1,5-pentanedithiol are put into the reactor at a molar ratio of 1.9:1, and 2,2-dimethyl-α-hydroxyacetophenone (accounting for the raw material 1% of the total mass of allyl glycidyl ether and 1,5-pentanedithiol) and N,N-dimethylformamide (accounting for 1% of the total mass of raw material glycidyl ether and 1,5-pentanedithiol 80%), and at 1500mW / cm 2 Under the conditions of ultraviolet light irradiation and stirring, react in ice-water bath for 8 hours; after the reaction, remove the solvent in a rotary evaporator to obtain the product;

[0067] The product obtained is dissolved in methyl ethyl ketone (15 times of the product mass), and trifluoroacetic acid (10 times of the product molar number) and zinc chloride (1%-3% of the product mass) are added, at room temperature and reflux temperature After reacting for 3 hours, t...

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Abstract

The invention discloses a sulfone group-containing epoxy resin and a synthesis method thereof. The synthesis method is as follows: put the raw materials allyl glycidyl ether and dimercapto compound in the reactor, add photoinitiator and the first solvent to react under ultraviolet light irradiation in an ice-water bath, and remove the first solvent in the rotary evaporator after the reaction. Solvent, to obtain the epoxy resin containing thioether group; The epoxy resin containing thioether group is dissolved in the second solvent, add oxidizing agent and catalyst, react at room temperature to the reflux temperature of the solvent used, after the reaction is completed, the rotary evaporator Remove the second solvent in the solvent to obtain the epoxy resin containing sulfone groups. The preparation method of the invention is simple and efficient, the raw materials are cheap and easy to obtain, and the reaction route is clean and environment-friendly. When the epoxy resin containing sulfone group is mixed with latent curing agent and compounded with glass fiber, carbon fiber and its woven cloth, it has a longer construction period or better storage stability; in addition, epoxy resin containing sulfone group modified Dicyandiamide system has good toughness.

Description

technical field [0001] The invention relates to the field of preparation methods of epoxy resins, in particular to a synthesis method of epoxy resins containing sulfone groups. Background technique [0002] Resin-based composites (especially epoxy resin-based composites) is a rapidly developing branch of materials science. Due to the sufficient supply of raw materials, simple and mature manufacturing process, good comprehensive performance of products, and high cost performance, epoxy resin-based composite materials have replaced some traditional materials such as metal and wood, and are increasingly widely used in military industry, new automobiles, sports equipment and other fields. . In addition to the properties of the matrix resin and the fibers used, the molding process of composite materials is also the main factor affecting composite products. In order to meet the different uses of composite materials, more than 20 kinds of molding processes for resin-based composi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/30C08G59/14C08G59/16
CPCC08G59/1405C08G59/1438C08G59/1455C08G59/302
Inventor 郑耀臣赵世坤宋鹏张新涛朱娇娇
Owner YANTAI UNIV
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