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Waterborne epoxy zinc alkene primer and preparation method thereof

A water-based epoxy and water-based epoxy resin technology, applied in epoxy resin coatings, coatings, anti-corrosion coatings, etc., to achieve the effects of low production cost, improved salt spray resistance, and easy operation

Inactive Publication Date: 2020-11-20
BEIJING GRAPHENE INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a water-based epoxy zincene primer and its preparation method to solve the long-term anti-corrosion problem of water-based zinc-containing anti-corrosion coatings under the condition of low zinc powder content

Method used

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  • Waterborne epoxy zinc alkene primer and preparation method thereof
  • Waterborne epoxy zinc alkene primer and preparation method thereof
  • Waterborne epoxy zinc alkene primer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The water-based zinc epoxy primer is composed of component A and component B, and the mass ratio of component A and component B is 2.5:1.

[0050] Component A includes: modified polyamine water-based epoxy curing agent, ethylene glycol propyl ether, fumed silica, talc powder, mixed polymer dispersant, polymer defoamer, polyether siloxane co- Polymer type defoamer, silicone leveling agent, zinc powder.

[0051] Component B includes: non-ionic aqueous dispersion of modified solid bisphenol A epoxy resin, polyamide wax salt, 15% sodium nitrite aqueous solution, 3% aqueous graphene dispersion, and deionized water.

[0052] The preparation method of water-based zinc epoxy primer is:

[0053] Preparation of 3% aqueous graphene dispersion: fully mix 0.6g sodium hydroxymethyl cellulose, 0.3g polymer type defoamer and 96.1g deionized water to obtain mixed solution A; at a speed of 1200rpm, slowly Add 3g of graphene powder into the mixed solution A for high-speed pre-dispersion...

Embodiment 2

[0058] The permanent epoxy zincene primer is composed of component A and component B, and the mass ratio of component A and component B is 1.6:1.

[0059] Component A includes: modified polyamine water-based epoxy curing agent, propylene glycol methyl ether, fumed silica, organic bentonite, talc powder, mica powder, mixed polymer dispersant, polymer defoamer, polyether Silicone copolymer type defoamer, silicone leveling agent, zinc powder.

[0060] Component B includes: non-ionic aqueous dispersion of modified solid bisphenol A epoxy resin, polyamide wax salt, 15% sodium nitrite aqueous solution, 4% aqueous graphene dispersion, and deionized water.

[0061] The preparation method of water-based zinc epoxy primer is:

[0062] Preparation of 4% aqueous graphene dispersion: fully mix 1.2g polyvinylpyrrolidone, 0.3g polymer defoamer and 94.5g deionized water to obtain mixed solution A; slowly mix 4g graphite at a speed of 1500rpm The graphene powder is added into the mixed solut...

Embodiment 3

[0067] The waterborne zinc epoxy primer is composed of component A and component B, and the mass ratio of component A and component B is 1:1.

[0068] Component A includes: modified polyamine water-based epoxy curing agent, propylene glycol methyl ether, organic bentonite, talc powder, mica powder, mixed polymer dispersant, polymer defoamer, polyether siloxane copolymerization Physical defoamer, silicone leveling agent, zinc powder.

[0069] Component B includes: non-ionic aqueous dispersion of modified solid bisphenol A epoxy resin, polyamide wax salt, 15% sodium nitrite aqueous solution, 4% aqueous graphene dispersion, and deionized water.

[0070] The preparation method of water-based zinc epoxy primer is:

[0071] Preparation of 4% aqueous graphene dispersion: fully mix 1.2g polyvinylpyrrolidone, 0.3g polymer defoamer and 94.5g deionized water to obtain mixed solution A; slowly mix 4g graphite at a speed of 1500rpm The graphene powder was added into the mixed solution A ...

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Abstract

The invention provides a waterborne epoxy zinc alkene primer and a preparation method thereof. The waterborne epoxy zinc alkene primer comprises a component A and a component B, wherein the mass ratioof the component A to the component B is (1-4): 1. The component A is prepared from the following components in percentage by weight: 7.5-30.0% of a waterborne epoxy curing agent, 15.0-23.0% of a coalescing agent, 2.0-2.2% of an anti-settling agent, 7.5-11.5% of a filler, 1.0-1.2% of a dispersing agent, 0.3-0.4% of a defoaming agent, 0.2-0.3% of a foam remover, 0.2-0.4% of a leveling agent and 35.0-60.0% of zinc powder. The component B is prepared from the following components in percentage by weight: 80.0-88.5% of waterborne epoxy resin emulsion, 0.2-1.0% of an anti-sagging agent, 0.2-0.4% of an anti-flash-rust agent, 2.0-2.5% of waterborne graphene dispersion liquid and 6.0-10.5% of deionized water. High-concentration stably-dispersed waterborne graphene dispersion liquid is added intoan waterborne anticorrosive paint system; and the waterborne epoxy zinc alkene primer can reach the performance indexes of a traditional solvent type epoxy zinc-rich primer under the condition of lower zinc powder content, has the advantages of energy conservation, environmental protection and high comprehensive cost performance, breaks through the bottleneck that the performance of a traditionalproduct in China can not meet the application in the field of heavy corrosion prevention, and has a very high application value and social and economic values.

Description

technical field [0001] The invention relates to an industrial anticorrosion primer, in particular to a water-based epoxy zincene primer and a preparation method thereof. Background technique [0002] With the development of the national economy and the further improvement of people's living standards, the country's investment in infrastructure, transportation, petroleum and petrochemicals, bridges and ships is also increasing year by year. These fields have a huge demand for metal materials, especially steel. However, due to the easy corrosion of steel, the corrosion protection of steel has always been the focus and difficulty in the field of metal protection. Usually, the anti-corrosion method of steel is to apply anti-corrosion paint on the surface of steel to protect the steel from corrosion by isolating the contact between the steel and air, water and chemical substances. [0003] Traditional anti-corrosion coatings, especially heavy-duty anti-corrosion coatings, usuall...

Claims

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Application Information

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IPC IPC(8): C09D5/10C09D163/00C09D7/61C09D7/63C09D7/65
CPCC08K2003/0893C08K2201/001C08K2201/014C08L2205/035C09D5/106C09D163/00C09D7/61C09D7/63C09D7/65C09D7/70C08L77/00C08L83/12C08K13/04C08K7/26C08K3/34C08K3/08C08K3/042C08K5/06
Inventor 韩东孙华杰刘舒陈韵吉
Owner BEIJING GRAPHENE INST