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
Examples
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
Description
Claims
Application Information
- IPC
- C09D163/00; C09D5/25; C09J163/00; C09J11/04; C08G59/42; C08G83/00
- CPC
- C08G59/423; C08G83/005; C09D163/00; C09J11/04; C09J163/00; C09D7/62; C08K9/06; C08K9/08
- Inventors
- 王利玲