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A kind of modified epoxy resin and preparation method thereof

An epoxy resin, oil epoxy fatty acid technology, applied in the polymer field, can solve problems such as carcinogenicity, and achieve the effects of increasing production capacity, convenient operation and low energy consumption

Active Publication Date: 2022-03-15
忠信世纪电子材料(始兴)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, epichlorohydrin used in the preparation of bisphenol A dimethyl ether monomer has carcinogenic effects

Method used

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  • A kind of modified epoxy resin and preparation method thereof
  • A kind of modified epoxy resin and preparation method thereof
  • A kind of modified epoxy resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A modified epoxy resin, the preparation steps are as follows:

[0035] S1. Dissolve 90g of tall oil fatty acid in 1200mL of methanol, add 35.9g of potassium tert-butoxide, and use a graphite electrode for constant current electrolysis at 50°C for 10s. The electrolysis parameters are voltage 5V, current 7.24A, and current density 20mA / cm 2 , remove the solvent under reduced pressure, add 500mL of water, adjust the pH value to 3 with 10wt% hydrochloric acid aqueous solution, wash with ethyl acetate three times, each time the amount of ethyl acetate is 300mL, combine the organic phases, dry over anhydrous sodium sulfate for 24h, and depressurize Remove the solvent to obtain the crude product;

[0036] S2. Take 20g of the crude product and dissolve it in 200mL of 2-butanone, add 65g of sodium bicarbonate and 4.8g of tetrabutylammonium bisulfate, slowly add tert-butanol peroxide in 4 times, the rate of addition is limited to ensure the safety of the system , the amount of e...

Embodiment 2

[0039] A modified epoxy resin, the preparation steps are as follows:

[0040] S1. Dissolve 90g of tall oil fatty acid in 1200mL of methanol, add 35.9g of potassium tert-butoxide, and use a graphite electrode for constant current electrolysis at 50°C for 20s. The electrolysis parameters are voltage 5V, current 7.24A, and current density 20mA / cm 2 , remove the solvent under reduced pressure, add 500mL of water, adjust the pH value to 3 with 10wt% hydrochloric acid aqueous solution, wash with ethyl acetate three times, each time the amount of ethyl acetate is 300mL, combine the organic phases, dry over anhydrous sodium sulfate for 24h, and depressurize Remove the solvent to obtain the crude product;

[0041] S2. Take 20g of the crude product and dissolve it in 200mL of 2-butanone, add 65g of sodium bicarbonate and 4.8g of tetrabutylammonium bisulfate, slowly add tert-butanol peroxide in 4 times, the rate of addition is limited to ensure the safety of the system , the amount of e...

Embodiment 3

[0044] A modified epoxy resin, the preparation steps are as follows:

[0045] S1. Dissolve 90g of tall oil fatty acid in 1200mL of methanol, add 35.9g of potassium tert-butoxide, and use a graphite electrode for constant current electrolysis at 50°C for 15s. The electrolysis parameters are voltage 5V, current 7.24A, and current density 20mA / cm 2, remove the solvent under reduced pressure, add 500mL of water, adjust the pH value to 3 with 10wt% hydrochloric acid aqueous solution, wash with ethyl acetate three times, each time the amount of ethyl acetate is 300mL, combine the organic phases, dry over anhydrous sodium sulfate for 24h, and depressurize Remove the solvent to obtain the crude product;

[0046] S2. Take 20g of the crude product and dissolve it in 200mL of 2-butanone, add 65g of sodium bicarbonate and 4.8g of tetrabutylammonium bisulfate, slowly add tert-butanol peroxide in 4 times, the rate of addition is limited to ensure the safety of the system , the amount of ea...

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Abstract

The invention provides a modified epoxy resin, which belongs to the field of macromolecules. The modified epoxy resin provided by the invention is electrolyzed with tall oil fatty acid as a monomer in the presence of a strong base, and then epoxidized with an epoxidation reagent to obtain tall oil epoxy fatty acid, which can be converted to tall oil ring It is prepared by adding a cross-linking agent to oxy-fatty acid. The advantage of the present invention is that: the raw material of the present invention adopts the environment-friendly tall oil fatty acid, and the tall oil fatty acid with little industrial use is creatively made into a modified epoxy resin with high industrial value. The obtained modified epoxy resin has good heat resistance, thermal stability and deformation resistance. In the preparation process of the modified epoxy resin, an environmentally friendly solvent is used, and the use of electrolysis can avoid or reduce the use of heavy metals and environmentally harmful solvents. The whole preparation process is easy to operate, and the production capacity is greatly increased on the basis of low energy consumption.

Description

technical field [0001] The invention relates to a modified epoxy resin and a preparation method thereof, belonging to the field of macromolecules. Background technique [0002] Epoxy resin refers to the general term for a class of polymers containing more than two epoxy groups in the molecule. Due to the chemical activity of the epoxy group, a variety of compounds containing active hydrogen can be used to open the ring, cure and cross-link to form a network structure, so it is a thermosetting resin. Bisphenol A epoxy resin not only has the largest output and the most complete variety, but also new modified varieties are still increasing, and the quality is constantly improving. Among thermosetting polymers, the epoxy resin network has excellent mechanical, thermal and chemical stability, and has corrosion resistance properties. They are the most versatile class of polymers and are used in coatings, adhesives, electronics and composite materials. Has a wide range of applica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/20C08G59/50C08G59/44C07D301/19C07D303/42
CPCC08G59/20C08G59/502C08G59/44C07D301/19C07D303/42
Inventor 王世茸
Owner 忠信世纪电子材料(始兴)有限公司