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Preparation method of graphene-based waterborne epoxy resin emulsion

A water-based epoxy resin and epoxy resin technology, applied in the field of preparation of water-based epoxy resin emulsion, can solve the problems of storage stability and application performance, large particle size, etc.

Inactive Publication Date: 2020-10-23
程浩源
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to be able to more effectively replace common solvent-based epoxy resin coatings, people continue to make progress in the development and research of water-based epoxy resin emulsions. The commonly used water-based epoxy resin emulsions are obtained by adding emulsifiers, that is In the presence of additives, use external force to disperse the resin in the water phase, but this method has its own limitations, such as high requirements for production equipment, high-speed dispersion equipment, and large particle size, poor storage stability and application performance. too ideal

Method used

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  • Preparation method of graphene-based waterborne epoxy resin emulsion

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Embodiment 1

[0030] A preparation method based on graphene-based aqueous epoxy resin emulsion, comprising the steps:

[0031] The first step, weigh the following raw materials in parts by weight: 10 parts of modified graphene, 3 parts of emulsifier, 35 parts of epoxy resin, 5 parts of polyethylene glycol, 120 parts of propylene glycol methyl ether, 20 parts of deionized water, 1 part Boron trifluoride, 1 part GSK-550;

[0032] Step 2: Add epoxy resin to a beaker filled with propylene glycol methyl ether, heat in a water bath at 60°C and stir at a constant speed until a transparent solution is formed, then add emulsifier and polyethylene glycol, and continue stirring for 30 minutes;

[0033] Step 3: Add boron trifluoride and modified graphene, cool down to 30°C and stir at a constant speed for 10 minutes, then raise the temperature to 85°C, react at this temperature for 2 hours, then cool down to 60°C, add deionized water dropwise, and control The dropping time is 1h, stirring at a constant ...

Embodiment 2

[0043] A preparation method based on graphene-based aqueous epoxy resin emulsion, comprising the steps:

[0044] The first step, weigh the following raw materials by weight: 12 parts of modified graphene, 4 parts of emulsifier, 40 parts of epoxy resin, 8 parts of polyethylene glycol, 130 parts of propylene glycol methyl ether, 22 parts of deionized water, 1 part Boron trifluoride, 2 parts GSK-550;

[0045] Step 2: Add epoxy resin to a beaker filled with propylene glycol methyl ether, heat in a water bath at 60°C and stir at a constant speed until a transparent solution is formed, then add emulsifier and polyethylene glycol, and continue stirring for 30 minutes;

[0046] Step 3: Add boron trifluoride and modified graphene, cool down to 30°C and stir at a constant speed for 10 minutes, then raise the temperature to 85°C, react at this temperature for 2 hours, then cool down to 60°C, add deionized water dropwise, and control The dropping time is 1h, stirring at a constant speed ...

Embodiment 3

[0049] A preparation method based on graphene-based aqueous epoxy resin emulsion, comprising the steps:

[0050] The first step, weigh the following raw materials by weight: 14 parts of modified graphene, 4 parts of emulsifier, 45 parts of epoxy resin, 8 parts of polyethylene glycol, 140 parts of propylene glycol methyl ether, 28 parts of deionized water, 2 parts Boron trifluoride, 2 parts GSK-550;

[0051] Step 2: Add epoxy resin to a beaker filled with propylene glycol methyl ether, heat in a water bath at 60°C and stir at a constant speed until a transparent solution is formed, then add emulsifier and polyethylene glycol, and continue stirring for 30 minutes;

[0052] Step 3: Add boron trifluoride and modified graphene, cool down to 30°C and stir at a constant speed for 10 minutes, then raise the temperature to 85°C, react at this temperature for 2 hours, then cool down to 60°C, add deionized water dropwise, and control The dropping time is 1h, stirring at a constant speed...

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Abstract

The invention discloses a preparation method of a graphene-based waterborne epoxy resin emulsion. Raw materials comprising, by weight, 10-15 parts of modified graphene, 3-5 parts of an emulsifier, 35-50 parts of epoxy resin, 5-10 parts of polyethylene glycol, 120-150 parts of propylene glycol monomethyl ether, 20-30 parts of deionized water, 1-2 parts of boron trifluoride and 1-3 parts of a leveling agent are weighed. The modified graphene has a physical barrier effect, when the emulsion is used for paint film combustion, heat transfer and combustible gas volatilization can be reduced, a carbon layer can be formed, a matrix is protected against combustion, and the emulsion is endowed with excellent flame retardant property; and the method solves the technical problem that graphene has super-strong Van der Waals' force and conjugation force, is easy to form a three-dimensional structure and has poor dispersibility in organic phase and aqueous phase solvents.

Description

technical field [0001] The invention belongs to the technical field of epoxy resin emulsion preparation, in particular to a preparation method of graphene-based water-based epoxy resin emulsion. Background technique [0002] Due to its excellent physical and mechanical properties, such as good adhesion, good chemical resistance, excellent solvent resistance, high hardness, and good wear resistance, epoxy resin has been widely used in military, civilian, and industrial maintenance. Applications, especially in the coatings industry are more widely used. In order to be able to more effectively replace common solvent-based epoxy resin coatings, people continue to make progress in the development and research of water-based epoxy resin emulsions. The commonly used water-based epoxy resin emulsions are obtained by adding emulsifiers, that is In the presence of additives, use external force to disperse the resin in the water phase, but this method has its own limitations, such as ...

Claims

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Application Information

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IPC IPC(8): C08J3/03C08L63/00C08L71/02C08K13/06C08K9/02C08K9/04C08K3/04C08K3/38
CPCC08J3/03C08J2363/00C08J2463/00C08J2471/02C08K3/38C08K9/02C08K9/04C08K13/06C08K3/042
Inventor 程浩源
Owner 程浩源
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