Production method of epoxy resin-based thermal-conductive insulating paste

An epoxy resin, heat conduction and insulation technology, which is applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problems that the thermal conductivity and insulation performance cannot be further improved, the dispersion of fillers is uneven, and the thermal conductivity is not good. Achieve the effect of improving thermal conductivity, improving thermal conductivity, and improving thermal conductivity

Pending Publication Date: 2019-08-30
秦臻
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem mainly solved by the present invention is: aiming at the disadvantages that the thermal conductivity and insulation performance of the traditional epoxy resin-based heat-conducting insulating adhesive cannot be further improved, and the uneven dispersion of fillers leads to poor thermal conductivity, an epoxy resin-based heat-conducting insulating adhesive is provided. Glue preparation method

Method used

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  • Production method of epoxy resin-based thermal-conductive insulating paste

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example 1

[0026] Mix aluminum nitride and dopamine solution with a mass fraction of 12% at a mass ratio of 1:12, soak at room temperature for 3 hours, and filter to obtain pretreated aluminum nitride. Pretreated aluminum nitride and silane coupling agent KH -550 was mixed in a beaker at a mass ratio of 3:1, and ethanol 10 times the mass of pretreated aluminum nitride was added to the beaker, and stirred and mixed for 6 hours at a temperature of 40°C and a rotational speed of 500r / min to obtain Pretreat the aluminum nitride dispersion; mix the graphene oxide dispersion and 4,4'-diaminodiphenyl ether in a three-necked flask at a mass ratio of 220:1, and feed it into the three-necked flask at a rate of 35mL / min Nitrogen, at a temperature of 35°C and a rotational speed of 350r / min, stir and react for 3 hours, then filter to obtain a functionalized graphene oxide blank, and wash the functionalized graphene oxide blank with N-methylpyrrolidone for 8 times , and then washed with ethanol and wa...

example 2

[0028] The graphene oxide dispersion and 4,4'-diaminodiphenyl ether were mixed in a three-necked flask at a mass ratio of 220:1, and nitrogen gas was passed into the three-necked flask at a rate of 35mL / min at a temperature of 35°C. Under the condition of rotating speed of 350r / min, after stirring and reacting for 3h, filter to obtain the functionalized graphene oxide blank, wash the functionalized graphene oxide blank with N-methylpyrrolidone for 8 times, and then wash with ethanol and water respectively 6 times, dry the washed functionalized graphene oxide blank at a temperature of 60°C for 2 hours to obtain functionalized graphene oxide; mix functionalized graphene oxide and water in a flask at a mass ratio of 1:150 , and N, N-dimethylformamide, which is 80 times the mass of functionalized graphene oxide, was added to the flask, and the functionalized graphite oxide was obtained after stirring and mixing for 50 minutes at a temperature of 50 ° C and a rotational speed of 350...

example 3

[0030] Mix aluminum nitride and dopamine solution with a mass fraction of 12% at a mass ratio of 1:12, soak at room temperature for 3 hours, and filter to obtain pretreated aluminum nitride. Pretreated aluminum nitride and silane coupling agent KH -550 was mixed in a beaker at a mass ratio of 3:1, and ethanol 10 times the mass of pretreated aluminum nitride was added to the beaker, and stirred and mixed for 6 hours at a temperature of 40°C and a rotational speed of 500r / min to obtain Pretreat the aluminum nitride dispersion; mix the graphene oxide dispersion and 4,4'-diaminodiphenyl ether in a three-necked flask at a mass ratio of 220:1, and feed it into the three-necked flask at a rate of 35mL / min Nitrogen, at a temperature of 35°C and a rotational speed of 350r / min, stir and react for 3 hours, then filter to obtain a functionalized graphene oxide blank, and wash the functionalized graphene oxide blank with N-methylpyrrolidone for 8 times , and then washed with ethanol and wa...

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Abstract

The invention discloses a production method of epoxy resin-based thermal-conductive insulating paste, and belongs to the technical field of high-polymer materials. The production method of the epoxy resin-based thermal-conductive insulating paste comprises the steps of sequentially weighing the components in parts by weight: 60-80 parts of epoxy resin, 30-40 parts of a diluent, 5-8 parts of a silane coupling agent KH-550, 10-20 parts of an additive and 10-12 parts of a curing agent, mixing the epoxy resin and the diluent in a stirrer, adding the additive and the silane coupling agent into thestirrer, under conditions of temperature of 30-50 DEG C and rotating speed of 300-400 r/min, conducting stirring and mixing for 30-50 min to obtain a mixed blank, mixing the mixed blank and the curingagent, under conditions of temperature of 30-60 DEG C and rotating speed of 300-350 r/min, conducting stirring and mixing for 20-50 min, and then under a condition of temperature of 150-180 DEG C, conducting heating and curing for 30-60 min to obtain the epoxy resin-based thermal-conductive insulating paste.

Description

technical field [0001] The invention discloses a preparation method of an epoxy resin-based heat-conducting insulating adhesive, which belongs to the technical field of polymer materials. Background technique [0002] Insulating adhesives are widely used in impregnation, pouring and coating of workpieces containing fiber materials and electrical parts that require moisture-proof sealing in electrical equipment, such as cast cable joints, bushings, transformers, current transformers of 20kV and below, 10kV and below voltage transformers, etc. Insulating glue is characterized by good conformability and integrity, excellent heat resistance, thermal conductivity, and electrical properties. The pouring process is simple, and it is easy to realize automatic production. Insulating adhesives are similar to solvent-free impregnating varnishes, but have a higher viscosity and are generally filled with fillers. [0003] Because the glue does not contain volatile solvents, there will...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J11/04
CPCC08K2003/282C09J11/04C09J163/00C08K13/06C08K9/10C08K9/12C08K3/042C08K9/06C08K3/28
Inventor 秦臻
Owner 秦臻
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