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Hyperbranched polymer-SiO2 modified epoxy resin insulating material and preparation method thereof

A technology of hyperbranched polymer and epoxy resin, which is applied in the direction of epoxy resin coating, epoxy resin glue, adhesive type, etc., and can solve the problem of poor mechanical properties and insufficient electrical insulation of modified epoxy resin insulating materials To avoid agglomeration and agglomeration, improve hydrophobic performance, and enhance insulation performance

Inactive Publication Date: 2020-02-11
王利玲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a hyperbranched polymer-SiO 2 The modified epoxy resin insulating material and its preparation method solve the problem that the electrical insulation of the existing unmodified epoxy resin coating and adhesive is not good enough, and solve the problem of the mechanical properties of the modified epoxy resin insulating material. poor problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] Hyperbranched polymer preparation method comprises the following steps:

[0029] (1) Equip a reflux device in the reaction bottle, and feed high-purity N 2Exhaust the air, then add an appropriate amount of absolute ethanol and diethanolamine, slowly add 1,4-dimethyl benzenediacrylate dropwise, stir evenly, then add the additive potassium carbonate and alkali catalyst triethylamine, diethanolamine, 1,4 - The molar ratio of dimethyl phthalate, potassium carbonate and triethylamine is 1:1.5-2:2-2.5:2-3, and the reaction bottle is placed in a constant temperature water bath and heated to 80-85°C , stirred at a constant speed and refluxed for 6-10 hours. The reaction was observed by TLC thin layer chromatography. After the reaction of dimethyl 1,4-benzenediacrylate was complete, the solution was concentrated under reduced pressure to remove the solvent, and then washed with anhydrous ether The solid product was dried to obtain a yellow solid Michael addition-transesterifica...

Embodiment 1

[0037] (1) Preparation of phenylacrylic acid amine glycol polymers: carry a reflux device in the reaction bottle, and feed high-purity N 2 Exhaust the air, then add an appropriate amount of absolute ethanol and diethanolamine, slowly add 1,4-dimethyl benzenediacrylate dropwise, stir evenly, then add the additive potassium carbonate and alkali catalyst triethylamine, diethanolamine, 1,4 - The molar ratio of dimethyl phthalate, potassium carbonate and triethylamine is 1:1.5:2:2, the reaction bottle is placed in a constant temperature water bath and heated to 85°C, stirred and refluxed at a constant speed for 6h, the reaction The reaction process was observed by TLC thin-layer chromatography analysis. After the reaction of dimethyl 1,4-benzenediacrylate was complete, the solution was concentrated under reduced pressure to remove the solvent, and then the solid product was washed with anhydrous ether and dried to obtain a yellow solid. Formation-transesterification reaction produc...

Embodiment 2

[0044] (1) Preparation of phenylacrylic acid amine glycol polymers: carry a reflux device in the reaction bottle, and feed high-purity N 2 Exhaust the air, then add an appropriate amount of absolute ethanol and diethanolamine, slowly add 1,4-dimethyl benzenediacrylate dropwise, stir evenly, then add the additive potassium carbonate and alkali catalyst triethylamine, diethanolamine, 1,4 -The molar ratio of dimethyl phthalate, potassium carbonate and triethylamine is 1:1.6:2.1:2.2, the reaction bottle is placed in a constant temperature water bath and heated to 80°C, stirred and refluxed at a constant speed for 6h, the reaction The reaction process was observed by TLC thin-layer chromatography analysis. After the reaction of dimethyl 1,4-benzenediacrylate was complete, the solution was concentrated under reduced pressure to remove the solvent, and then the solid product was washed with anhydrous ether and dried to obtain a yellow solid. Formation-transesterification reaction pro...

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Abstract

The invention relates to the technical field of epoxy resin adhesives, and discloses a hyperbranched polymer-SiO2 modified epoxy resin insulating material and a preparation method thereof. The hyperbranched polymer-SiO2 modified epoxy resin insulating material is prepared from the following formula materials: hyperbranched polymer, nanosilicon dioxide, a silane coupling agent, a catalyst, dodecylsuccinic anhydride and epoxy resin. A three-dimensional net-like spherical structure of the hyperbranched polymer has a high degree of molecular branching, so that nano-SiO2 is uniformly dispersed on the huge specific surface of the hyperbranched polymer, nano-SiO2 agglomeration is reduced, nano-SiO2 reduces the effective charge and charge accumulation in a coating interface area, the diffusion rate of a carrier is reduced, the formation of conductive paths is suppressed, the breakdown characteristics of epoxy resin coatings are improved, the hyperbranched polymer has excellent elastic expansion structure and good structural stability, the crosslinking density of the epoxy resin is increased, the mobility of a molecular segment of the epoxy resin is suppressed, and the impact cross sectioncaused by the stress expansion of the resin is reduced.

Description

technical field [0001] The invention relates to the technical field of epoxy resin adhesives, in particular to a hyperbranched polymer-SiO 2 Modified epoxy resin insulating material and its preparation method. Background technique [0002] Adhesive bonding refers to the technology of connecting the surfaces of homogeneous or heterogeneous objects with adhesives. It has the characteristics of continuous stress distribution and light weight. Adhesive bonding is suitable for the connection of materials of different materials, different thicknesses and complex components. There are many classification methods of adhesives. Generally, adhesives are composed of bonding substances, curing agents, toughening agents, diluents, modifiers, etc., mainly polyacrylates, polyamides and other thermoplastic adhesives, urea-formaldehyde resins, epoxy resins, etc. Thermosetting adhesives such as resins, synthetic rubber adhesives such as neoprene rubber and polyurethane rubber, rubber resin a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/25C09J163/00C09J11/04C08G59/42C08G83/00
CPCC08G59/423C08G83/005C09D163/00C09J11/04C09J163/00C09D7/62C08K9/06C08K9/08C08K3/36
Inventor 王利玲
Owner 王利玲
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