VOC-free (volatile organic compounds free) epoxy resin and HNT (halloysite nanotube) composite self-repair coating and preparation method thereof

A technology of epoxy resin and water-based epoxy resin, which is applied in the direction of epoxy resin coating, anti-corrosion coating, coating, etc., can solve the problems of uneconomical and environmental protection, high cost, and no reports, etc., and achieves the simple and easy implementation of the preparation method, Effects of increasing hardness and increasing thermal decomposition temperature

Inactive Publication Date: 2016-10-26
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the current polymer-based self-healing nanomaterials are usually: nano-silica, nano-metal ions, nano-metal oxides, etc., but they need to be prepared independently, the cost is high, and it is not economical and environmentally friendly.
[0004] At present, there are no water-based epoxy resin self-repairing materials added with halloysite nanotubes on the market, nor have there been reports

Method used

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  • VOC-free (volatile organic compounds free) epoxy resin and HNT (halloysite nanotube) composite self-repair coating and preparation method thereof
  • VOC-free (volatile organic compounds free) epoxy resin and HNT (halloysite nanotube) composite self-repair coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A VOC-free epoxy resin / HNTs composite self-healing coating, including the following components: 103 parts of water-based epoxy resin / HNTs composite emulsion (among them: 100.5 parts of water-based epoxy resin emulsion, 2.5 parts of HNTs filler with corrosion inhibitor ), curing agent ERC2602 13 parts, leveling agent Modarez PSL2000 0.2 parts, wetting agent BD-3245 0.25 parts, defoamer EL-26000.15 parts. The above components are mixed together and fully stirred to achieve the required fineness, so as to prepare the VOC-free epoxy resin / HNTs composite self-healing coating. (Before painting, slowly add 20 parts of curing agent, stir for 5 minutes, and then the film coating and other processes can be carried out.)

Embodiment 2

[0040] A VOC-free epoxy resin / HNTs composite self-healing coating, including the following components: 73 parts of water-based epoxy resin / HNTs composite emulsion, 12 parts of curing agent ERC2606, 0.5 part of leveling agent Modarez PW336, and 0.65 part of wetting agent TEGO245 , 0.35 parts of defoamer EL-2601; 70 parts of water-based epoxy resin emulsion; 3 parts of HNTs filler loaded with corrosion inhibitor.

[0041] The above components are mixed together and fully stirred to achieve the required fineness, so as to prepare the VOC-free epoxy resin / HNTs composite self-healing coating.

Embodiment 3

[0043] A VOC-free epoxy resin / HNTs composite self-healing coating, including the following components: 150 parts of water-based epoxy resin / HNTs composite emulsion, 12 parts of curing agent ERC2608, 0.5 parts of leveling agent Modarez X080, and O-level wetting agent 0.65 parts of X1840, 0.35 parts of defoamer EL-2603; 145 parts of water-based epoxy resin emulsion; 5 parts of HNTs filler loaded with corrosion inhibitor.

[0044] The above components are mixed together and fully stirred to achieve the required fineness, so as to prepare the VOC-free epoxy resin / HNTs composite self-healing coating.

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Abstract

A VOC-free (volatile organic compounds free) epoxy resin and HNT (halloysite nanotube) composite self-repair coating comprises the following components: waterborne epoxy resin and HNT composite emulsion, a curing agent, 0.1-0.8 part of a leveling agent, a wetting agent and a defoaming agent; a preparation method includes the steps: first, weighing 69.5-145 parts of waterborne epoxy resin emulsion in a three-port flask, weighing 0.5-5 parts of HNT loading a corrosion inhibitor, adding to the three-port flask, and electrically and chemically stirring; second, ultrasonically dispersing, moving to an electric stirring device, stirring, repeating three times to form disperse, stable and homogeneous waterborne epoxy resin and HNT composite emulsion; third, mixing well the waterborne epoxy resin and HNT composite emulsion, the curing agent, the leveling agent, the wetting agent and the defoaming agent to required fineness; the coating has antiseptic and self-repair functions; the coating is green, nontoxic and harmless, good in adhesion, high in hardness, simple to prepare and low in production cost.

Description

technical field [0001] The invention relates to the field of nano-hybrid self-healing coatings and composite materials, in particular to a VOC-free epoxy resin / HNTs composite self-healing coating and a preparation method thereof. Background technique [0002] Halloysite nanotubes (HNTs) is a natural inorganic aluminosilicate, which is a hollow tubular structure formed by natural curling of aluminosilicate sheets after weathering, with a large aspect ratio. The inner diameter is about 5-20 nm, the outer diameter is about 10-50 nm, and the length is about 100-400 nm. The outer layer of the tube is a silicon-oxygen tetrahedral layer, and the inner layer is an aluminum-oxygen octahedral layer. HNTs have the advantages of strong thermal stability and large specific surface area, coupled with their unique hollow nanotube structure and surface structure, and are widely used in composite materials, ceramics, nano templates, catalyst supports and other fields. As a filler, it can e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/12C09D5/08
CPCC09D163/00C08K5/3437C08K5/3475C08K7/26C08K9/12C08K13/06C08K2201/011C09D5/08C09D7/70
Inventor 杨军于凯烁王海花
Owner SHAANXI UNIV OF SCI & TECH
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