Novel waterborne graphene polyurethane coating

A technology of water-based graphene and polyurethane coatings, which is applied in the direction of polyurea/polyurethane coatings, fireproof coatings, conductive coatings, etc., can solve the problems of low strength, poor heat resistance, antistatic and flame resistance, etc., and achieve improved strength, Effect of improving flame retardancy, improving antistatic and heat protection properties

Inactive Publication Date: 2020-11-17
泰州利广瑞新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a new type of water-based graphene polyurethane coating, which solves the problems of the existing water-based polyurethane coatings such as low strength, poor heat resistance, antistatic, flame retardant, etc.

Method used

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Comparison scheme
Effect test

Embodiment 1

[0027] The embodiment of the present invention provides a kind of novel waterborne graphene polyurethane coating, comprises coating formula and production method, and production method step is:

[0028] S1. After the expanded graphite is ground to 600 mesh by ball milling, graphene oxide is prepared by the Hummers method;

[0029] S2. After adding the prepared graphene oxide into deionized water, add 40% hydrazine hydrate aqueous solution, and then use ultrasonic waves to ultrasonicate the solution for 1 min, so that the monolithic graphene oxide forms multiple hydrophilic groups;

[0030] S3. Use the ultrafine filter to filter out the graphene, and after washing away the residual hydrazine hydrate aqueous solution with deionized water, add the graphene to the deionized water to form a suspension;

[0031] S4. Put 58 parts of water-based polyurethane and 10 parts of modified epoxy resin inside the heatable stirring equipment, after adding deionized water, slowly raise the temp...

Embodiment 2

[0037] The difference between this embodiment and embodiment one is: a novel water-based graphene polyurethane coating, including coating formula and production method, and the production method steps are:

[0038] S1. After the expanded graphite is ground to 700 mesh by ball milling, graphene oxide is prepared by the Hummers method;

[0039] S2. After adding the prepared graphene oxide into deionized water, add 600% hydrazine hydrate aqueous solution, and then use ultrasonic waves to ultrasonicate the solution for 2 minutes, so that a single sheet of graphene oxide forms multiple hydrophilic groups;

[0040] S3. Use the ultrafine filter to filter out the graphene, and after washing away the residual hydrazine hydrate aqueous solution with deionized water, add the graphene to the deionized water to form a suspension;

[0041] S4. Put 53 parts of water-based polyurethane and 15 parts of modified epoxy resin into the heatable stirring equipment, after adding deionized water, slo...

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PUM

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Abstract

The invention provides a novel waterborne graphene polyurethane coating, and relates to the technical field of waterborne coatings. The polyurethane coating based on the novel water-based graphene isprepared from 45-60 parts of water-based polyurethane, 8-15 parts of modified epoxy resin, 3-5 parts of water-based pigment, 0.5-1 part of defoamer, 2-3 parts of talcum powder, 2.5-4 parts of barite powder, 5-7 parts of modified graphene, 1-3 parts of plasticizer, 5-7 parts of coalescing agent and 2-4 parts of leveling agent. According to the preparation method, polyurethane and graphene components are compounded, so that the strength of the polyurethane coating is greatly improved, the antistatic and heatproof properties of the polyurethane coating are improved by utilizing the excellent electric conduction and heat conduction capacities of graphene, and the graphene is activated by utilizing a chemical and physical combination mode, so that the situation that the performance of the polyurethane coating is reduced due to the agglomeration effect when the graphene is compounded with the polyurethane coating can be prevented, and the practicability of the coating is greatly improved.

Description

technical field [0001] The invention relates to the technical field of water-based coatings, in particular to a novel water-based graphene polyurethane coating. Background technique [0002] Graphene is a carbon atom with sp 2 The hybrid orbitals form a hexagonal two-dimensional carbon nanomaterial with a honeycomb lattice. Graphene has excellent optical, electrical, and mechanical properties, and has important application prospects in materials science, micro-nano processing, energy, biomedicine, and drug delivery. It is considered to be a revolutionary material in the future. So far, Graphene and composite materials have been widely studied and applied in the fields of conductive materials, flame retardant materials, polymer modification, energy storage and conversion, etc. [0003] The full name of polyurethane is polyurethane. A polymer compound. It was produced by O. Bayer and others in 1937. There are two types of polyurethanes: polyester and polyether. They can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D163/00C09D5/24C09D5/18C09D5/32C09D7/62
CPCC08K2003/3045C08K2201/001C08L2201/02C08L2201/04C08L2201/08C08L2205/03C09D5/18C09D5/24C09D5/32C09D175/04C09D7/62C08L63/00C08K9/02C08K9/00C08K3/042C08K3/34C08K3/30C08K13/06
Inventor 黄泓磷徐海芸王文忠
Owner 泰州利广瑞新材料科技有限公司
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