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Single-component water-based epoxy anticorrosive primer and preparation method thereof

A water-based epoxy and anti-corrosion primer technology, applied in anti-corrosion coatings, coatings, etc., can solve problems such as poor impact resistance, poor weather resistance, and paint waste, achieve good water resistance and anti-corrosion performance, and solve brittleness and weather resistance. The effect of expanding the range of use

Active Publication Date: 2020-05-08
武汉凯泽源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The price of domestic water-based epoxy emulsion and water-based epoxy curing agent is significantly lower than that of foreign products, but there is still a certain gap in storage stability and product performance compared with products of large foreign companies
[0004] In addition, most of the water-based epoxy resins on the market are ionic, easy to flash, and sensitive to pH value, which limits the use of pigments and fillers. Water-based epoxy resins alone also have high film brittleness, poor impact resistance, and poor weather resistance. And other issues,
[0005] In addition, most of the anti-corrosion coatings currently on the market are two-component packaging. When using them, they are mixed evenly according to the ratio of one end. The construction is subject to certain restrictions and may cause waste of coatings. Therefore, it is more important to develop single-component anti-corrosion coatings. Practical significance
The existing one-component water-based primer has problems such as poor stability, poor adhesion, and bleeding, and needs to be improved urgently

Method used

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  • Single-component water-based epoxy anticorrosive primer and preparation method thereof
  • Single-component water-based epoxy anticorrosive primer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A kind of one-component waterborne epoxy anticorrosion primer, raw material comprises by weight:

[0055] Water-based polyurethane epoxy acrylate emulsion 40-60%, dispersant BYK-151 1.5%, defoamer BYK02 51%, substrate wetting agent TEGO Wet 250 0.2%, anti-rust pigment iron oxide yellow 15%, anti-flash embroidery agent R-760F 2%, thickener RM-8W 1%, filler light calcium carbonate 9%, and the rest is deionized water.

[0056] Wherein the raw material of aqueous polyurethane epoxy acrylate emulsion comprises by weight:

[0057] Bisphenol A type epoxy resin E-44 35%, diisocyanate liquefied MDI 15%, polyethylene glycol 2000 18%, styrene 22%, ammonium persulfate 7%, sodium carbonate 0.5%, and the rest is deionized water.

Embodiment 2

[0059] A kind of one-component waterborne epoxy anticorrosion primer, raw material comprises by weight:

[0060] Waterborne polyurethane epoxy acrylate emulsion 60%, dispersant TEGO Dispers 715W 1.7%, defoamer BYK-023 0.5%, substrate wetting agent TEGO Wet 245 0.5%, mica powder 13%, anti-flash agent Raybo 60 0.5 %, thickener RM-8W 3.4%, filler calcite powder 15%, and the rest is deionized water.

[0061] Wherein the raw material of aqueous polyurethane epoxy acrylate emulsion comprises by weight:

[0062] Bisphenol A type epoxy resin E-20 30%, diisocyanate liquefied HDI 11%, polyethylene glycol 1000 25%, hydroxypropyl acrylate 20%, BPO 3%, sodium carbonate 0.8%, and the rest is deionized water.

Embodiment 3

[0064] A kind of one-component waterborne epoxy anticorrosion primer, raw material comprises by weight:

[0065] Water-based polyurethane epoxy acrylate emulsion 40%, dispersant BYK-190 1.6%, defoamer TEGO Airex931 1.3%, substrate wetting agent BYK-301 0.1%, glass flake 12%, anti-flash agent Raybo 60 3%, Thickener TEGO ViscoPlus 3060 1.9%, filler talc 8%, the rest is deionized water.

[0066] Wherein the raw material of aqueous polyurethane epoxy acrylate emulsion comprises by weight:

[0067] Bisphenol A type epoxy resin E-51 32%, diisocyanate liquefied IPDI 10%, polyethylene glycol 6000 21%, hydroxypropyl acrylate 28%, potassium persulfate 4%, sodium bicarbonate 1%, the rest is to ionized water.

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Abstract

The invention discloses a single-component water-based epoxy anticorrosive primer and a preparation method thereof. A matrix resin emulsion is synthesized by adopting a polyethylene glycol nonionic flexible chain segment through a self-emulsifying technology, and an acrylate monomer with low price is used for toughening, grafting and modifying the epoxy emulsion, so an additional curing agent is not required to participate in curing, the water resistance and the corrosion resistance are good, the drying speed is high, stability and safety are realized, the matching property with pigments and fillers is good, the problems of brittleness and weather resistance of epoxy resin are solved, and the application range is expanded.

Description

technical field [0001] The invention belongs to the technical field of water-based coatings, and in particular relates to the preparation of a single-component water-based epoxy anticorrosion primer. Background technique [0002] Traditional solvent-based coatings release a large amount of toxic and harmful organic volatile compounds (VOC for short) during the production and preparation process, which brings great harm to the natural environment and human health. With the improvement of people's awareness of environmental protection and the improvement of national laws and regulations, green and pollution-free water-based coatings have gradually become the development direction of the coatings industry. Compared with traditional solvent-based coatings, water-based coatings basically do not pollute the ecological environment. Water-based coatings have advantages in terms of environmental protection, and have very broad development prospects in household wood, building interio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D5/08C09D7/61C08F283/00C08F212/08C08F220/20C08F220/14C08G18/48C08G18/10C08G18/58
CPCC09D151/08C09D5/084C09D7/61C09D7/70C08F283/006C08G18/48C08G18/10C08G2150/90C08K2003/2272C08K2003/265C08K2003/3045C08F212/08C08F220/20C08F220/14C08G18/58C08K13/02C08K3/26C08K3/22C08K3/34C08K13/04C08K7/00C08K3/40C08K3/30
Inventor 赵可凡
Owner 武汉凯泽源科技有限公司
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