Hyperbranched epoxy resin and preparation method and application thereof

An epoxy resin and hyperbranched polymer technology, applied in the direction of organic chemistry, can solve the problems of low heat resistance and toughness, difficult to control the structure of hyperbranched epoxy resin, and achieve low viscosity, high toughness, and structural flexibility. control effect

Active Publication Date: 2021-09-07
JIANGSU YANGNONG CHEM GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the hyperbranched epoxy resin structure prepared by the above process is difficult to control, the heat resistance and toughness are still not high, and it is difficult to meet the needs of the fields of electronics, aerospace and structural materials. needs

Method used

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  • Hyperbranched epoxy resin and preparation method and application thereof
  • Hyperbranched epoxy resin and preparation method and application thereof
  • Hyperbranched epoxy resin and preparation method and application thereof

Examples

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preparation example Construction

[0079] The schematic flow sheet of the preparation method of hyperbranched epoxy resin provided by the invention is as figure 1 As shown, it specifically includes the following steps:

[0080] (1) Using ethylenediaminetetraacetic acid as the first core monomer and organic alcohol as the second monomer, under the action of catalyst and water-carrying agent, synthesize hyperbranched polymer through esterification reaction at 120-200°C for 2-18 hours The molar ratio of the ethylenediaminetetraacetic acid to the organic alcohol is 5 to 35, and the mass ratio of the water-carrying agent to the ethylenediaminetetraacetic acid is 1 to 5:1; the catalyst accounts for the mass of the ethylenediaminetetraacetic acid 2-10% of

[0081] (2) Mix the solvent, inorganic salt and the hyperbranched polymer first, heat-preserve and reflux for 2 to 6 hours, then mix epichlorohydrin, phase transfer catalyst and the system after heat-preserving and reflux, and carry out 80-220°C end group Epoxidat...

Embodiment 1

[0085] The present embodiment provides a kind of preparation method of hyperbranched epoxy resin, and described preparation method comprises the steps:

[0086] (1) Add 200g of ethylenediaminetetraacetic acid as the first nuclear monomer and 212g of 1,2-ethanediol as the second monomer in a 1L reactor, and use 4g of zinc oxide as a catalyst and 200g of toluene as a water-carrying agent The temperature was raised to 120°C under stirring conditions, and the hyperbranched polymer was synthesized by esterification reaction for 2 hours under the condition of stirring. In the presence of toluene, the water produced by the reaction was taken out of the reaction system by a water separator, and the temperature was lowered to room temperature after the end of the heat preservation. The product is filtered, the catalyst is recovered, and the solvent is removed under negative pressure to obtain a hyperbranched polymer;

[0087] (2) First mix 200gDMF, 40g sodium carbonate and the hyperbra...

Embodiment 2

[0092] The present embodiment provides a kind of preparation method of hyperbranched epoxy resin, and described preparation method comprises the steps:

[0093] (1) Add 200g of ethylenediaminetetraacetic acid to the 2L reactor as the first nuclear monomer, 520g of 1,3-propanediol as the second monomer, and heat up under the action of 10g of tin oxide as a catalyst and 400g of toluene as a water-carrying agent To 130°C, esterify under stirring conditions for 6 hours to synthesize hyperbranched polymers, use a water separator to take the water out of the reaction system in the presence of toluene, and cool down to room temperature after the heat preservation is over, and carry out the esterification reaction product Filtration, catalyst recovery, solvent removal under negative pressure conditions, to obtain hyperbranched polymers;

[0094] (2) first mix 400gN-methylpyrrolidone, 50g sodium bicarbonate and described hyperbranched polymer, 180 ℃ of insulation reflux 3h, then mix 80...

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Abstract

The invention provides hyperbranched epoxy resin and a preparation method and application thereof. The hyperbranched epoxy resin is formed by taking ethylenediamine tetraacetic acid as a first core monomer and organic alcohol as a second monomer, synthesizing a hyperbranched polymer through esterification reaction and then polymerizing the hyperbranched polymer with an epoxy group to form the hyperbranched epoxy resin. The hyperbranched epoxy resin is controllable in structure, low in viscosity, high in toughness and resistant to high temperature, and can well meet the requirements in the fields of electronics, aerospace, structural materials and the like.

Description

technical field [0001] The invention relates to the technical field of polymer epoxy resins, in particular to a hyperbranched epoxy resin and its preparation method and application. Background technique [0002] Epoxy resin is a kind of thermosetting resin, which has good electrical properties, chemical stability, adhesiveness, processability, etc., but after curing, it has high cross-linking density and structural characteristics of benzene ring skeleton, which leads to its impact resistance. And poor heat resistance, insufficient toughness. Hyperbranched polymer is a new type of functional polymer material with highly branched structure, good solubility, low viscosity and high chemical reactivity. Using hyperbranched technology to synthesize epoxy resin, so that hyperbranched epoxy compounds have both the characteristics of hyperbranched polymers and epoxy compounds, in order to explore the synthesis, modification and application of epoxy resin, and to seek better perform...

Claims

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Application Information

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IPC IPC(8): C08G59/32C07D303/24
CPCC08G59/3227C07D303/24
Inventor 徐林黄杰军孙诚丁克鸿李幸霏李明
Owner JIANGSU YANGNONG CHEM GROUP
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