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A kind of bio-based epoxy resin containing triazine ring structure and preparation method thereof

A technology based on epoxy resin and triazine ring, which is applied in the field of bio-based epoxy resin containing triazine ring structure and its preparation, can solve the problems such as the reduction of bio-based content in the system, and achieve easy operation, excellent heat resistance, The effect of saving petrochemical resources

Active Publication Date: 2022-05-13
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the overall performance of this type of bio-based epoxy resin has been greatly improved, the bio-based content of the system is reduced due to the introduction of some petroleum-based compounds.
It can be seen that the current research on bio-based epoxy resins cannot meet the development goals of high bio-based content and high performance proposed for bio-based epoxy resins in scientific research and practical applications.
[0005] So far, there have been no literature or patent reports to prepare epoxy resins containing triazine ring structure bio-based carbon sources from bio-based monomers through corresponding structural transformations.

Method used

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  • A kind of bio-based epoxy resin containing triazine ring structure and preparation method thereof
  • A kind of bio-based epoxy resin containing triazine ring structure and preparation method thereof
  • A kind of bio-based epoxy resin containing triazine ring structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Synthesis of bio-based 4-hydroxy-3methoxybenzonitrile: add 0.81g of anhydrous ferric chloride and 50ml of anhydrous DMF in a 100ml three-necked flask, mechanically stir until completely dissolved, and then successively 1.52g of vanillin and 0.83g of hydroxylamine hydrochloride were added thereto, and the system was reacted at 140°C for 5h. After the reaction, the system was poured into 100 mL of distilled water, extracted with ethyl acetate, separated, and the ethyl acetate layer was dried overnight with anhydrous sodium sulfate. Subsequently, suction filtration was performed, and the solvent was distilled off from the filtrate under reduced pressure to obtain a solid product, which was washed three times with water and dried in vacuum to obtain the bio-based monomer 4-hydroxy-3-methoxybenzonitrile with a yield of 93%.

[0035] (2) Synthesis of THMT, a bio-based triphenol monomer containing triazine ring structure: In a 500ml three-necked flask equipped with mechani...

Embodiment 2

[0040] (1) Synthesis of bio-based 4-hydroxy-3,5-dimethoxybenzonitrile: Add 0.97g of anhydrous ferric chloride and 50ml of anhydrous DMF into a 100ml three-necked flask, and mechanically stir until completely dissolved Afterwards, 1.82 g of syringaldehyde and 1.09 g of hydroxylamine hydrochloride were successively added thereto, and the system was reacted at 140° C. for 5 hours. After the reaction, the system was poured into 100ml of distilled water, extracted with ethyl acetate, separated, and the ethyl acetate layer was dried overnight with anhydrous sodium sulfate. Subsequently, suction filtration, the filtrate was distilled off the solvent under reduced pressure to obtain a solid product, which was washed 3 times with water and dried in vacuo to obtain the bio-based monomer 4-hydroxyl-3,5-dimethoxybenzonitrile, the yield 89%.

[0041] (2) Synthesis of THMT-2, a bio-based triphenol monomer containing a triazine ring structure: In a 500ml three-necked flask equipped with mec...

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Abstract

The invention discloses a bio-based epoxy resin containing a triazine ring structure and a preparation method thereof, belonging to the technical field of bio-based polymer materials. Using bio-based compounds containing aldehyde groups as raw materials, the aldehyde groups in them are first converted into cyano groups, and then under the catalysis of trifluoromethanesulfonic acid, the trimerization reaction of cyano groups is realized, and the three-containing compounds that can be used for polymer synthesis are prepared. Triphenol monomers of all bio-based carbon sources with oxazine ring structure. The bio-based monomer can react with epichlorohydrin to finally obtain a bio-based epoxy resin precursor containing a triazine ring structure. After the prepared bio-based epoxy resin containing triazine ring structure is cured, it exhibits better thermal stability, mechanical properties, and flame retardancy than petroleum-based bisphenol A epoxy resin, and has the potential to replace the existing petroleum-based related epoxy resins. product possibilities.

Description

technical field [0001] The invention belongs to the technical field of bio-based polymer materials, and in particular relates to a bio-based epoxy resin containing a triazine ring structure and a preparation method thereof. Background technique [0002] Epoxy resin is the most widely used thermosetting resin, which has the advantages of good adhesion, mechanical properties, electrical insulation, chemical corrosion resistance, good processability, and low curing shrinkage. It has a wide range of applications in many fields such as coatings, adhesives, electronic packaging, and composite materials. [0003] However, the existing epoxy resins are basically made from petroleum-based raw materials, and what accounts for more than 85% of the total output of epoxy resins is bisphenol A epoxy resin, which is composed of bisphenol A and epichlorohydrin prepared. Although epichlorohydrin can already be obtained from glycerol, a bio-based raw material, bisphenol A can only be produc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/06
CPCC08G59/063
Inventor 蹇锡高翁志焕王锦艳张守海刘程戚裕
Owner DALIAN UNIV OF TECH
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