Sulfone-containing epoxy resin and synthesis method thereof

An epoxy resin and a technology for a synthesis method are applied in the field of epoxy resin preparation to achieve the effects of improving fracture strength and toughness, cheap and easy-to-obtain raw materials, and improving reaction activation energy.

Active Publication Date: 2019-07-09
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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  • Sulfone-containing epoxy resin and synthesis method thereof
  • Sulfone-containing epoxy resin and synthesis method thereof
  • Sulfone-containing epoxy resin and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A synthetic method containing sulfone-based epoxy resin, comprising 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 temperature a...

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 sulfone-containing epoxy resin and a synthesis method thereof. The synthesis method comprises the following steps: putting raw materials comprising allyl glycidyl ether and a dimercapto compound into a reactor, adding a photoinitiator and a first solvent, carrying out a reaction under ultraviolet irradiation in an ice-water bath, and removing the first solvent by a rotary evaporator after the reaction is finished to obtain epoxy resin containing thioether groups; and dissolving the epoxy resin containing thioether groups in a second solvent, adding an oxidizing agent and a catalyst, carrying out a reaction at a temperature in a range from room temperature to the reflux temperature of the used solvent, and removing the second solvent by a rotary evaporator after thereaction is finished to obtain the sulfone-containing epoxy resin. The preparation method is simple and efficient, the raw materials are cheap and are easily available, and the reaction route is cleanand environmentally friendly. When the sulfone-containing epoxy resin is mixed with a latent curing agent and the obtained mixture is compounded with glass fibers, carbon fibers and woven fabrics ofthe glass fibers and the carbon fibers, the sulfone-containing epoxy resin has a relatively long construction time limit or better storage stability. In addition, a sulfone-containing epoxy resin-modified dicyandiamide system has relatively 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 Applications(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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