Unlock instant, AI-driven research and patent intelligence for your innovation.

High-performance water-based epoxy coating and preparation method thereof

A water-based epoxy coating and water-based epoxy technology, applied in the field of coatings, can solve the problems of poor substrate wettability, foaming of surfactants, water resistance of coating films, etc., and achieve excellent corrosion resistance and good thermal stability. Effect

Inactive Publication Date: 2020-04-17
QINGYUAN YAKOO CHEM CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also some shortcomings and defects in waterborne epoxy resin coatings, which have become limitations in the application of waterborne epoxy resin coatings.
First, the coating film of water-based epoxy coatings is difficult to dry. Water has strong polarity, high heat capacity and high boiling point. Therefore, the volatilization rate of water in epoxy resin coatings is relatively low, especially in high humidity and In a low-temperature environment, water volatilizes more slowly; second, water-based epoxy coatings have poor wettability to the substrate, which is mainly due to the high surface tension of water, and alcohol ether surfactants are sometimes added to reduce the surface. Tension, but the addition of surfactants will produce foam, and also lead to the presence of volatile organic substances in the coating; third, water-based epoxy coatings are prone to flash corrosion; fourth, the water resistance of water-based epoxy coatings has decreased In the process of preparing water-based epoxy resin, some hydrophilic emulsifiers will be added or some water-soluble groups will be grafted on the epoxy resin molecules. These hydrophilic modifications will also have a certain impact on the water resistance of the coating film. Impact

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-performance water-based epoxy coating and preparation method thereof
  • High-performance water-based epoxy coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of high-performance waterborne epoxy paint, comprises the raw material formula of following mass parts:

[0032] Component A: 25 parts of deionized water, 45 parts of water-based epoxy emulsion, 11 parts of red iron oxide, 6 parts of talc powder, 5 parts of barium sulfate, 3.5 parts of mica powder, 4 parts of aluminum tripolyphosphate, and 0.3 parts of thickener , 0.2 parts of wetting agent, 0.5 parts of defoamer, 0.3 parts of dispersant, 0.2 parts of nano zinc oxide;

[0033] B component: 10 parts of water-based epoxy curing agent, 10 parts of water.

[0034] Based on the above-mentioned raw material formula, a kind of preparation method of high-performance waterborne epoxy coating is proposed now, and flow process is as follows figure 1 , including the following steps:

[0035] S101: Put 250g of deionized water and 3g of dispersant into a 1L dispersion tank, and disperse evenly for 10 minutes;

[0036] S102: Weigh 110g of iron oxide red, 60g of talc powder, ...

Embodiment 2

[0042] A kind of high-performance waterborne epoxy paint, comprises the raw material formula of following mass parts:

[0043] Component A: 27 parts of deionized water, 40 parts of water-based epoxy emulsion, 12 parts of red iron oxide, 5.5 parts of talc powder, 5.5 parts of barium sulfate, 3.5 parts of mica powder, 5 parts of aluminum tripolyphosphate, and 0.4 parts of thickener , 0.15 parts of wetting agent, 0.4 parts of defoamer, 0.2 parts of dispersant, 0.3 parts of nano zinc oxide;

[0044] B component: 10 parts of water-based epoxy curing agent, 10 parts of water.

[0045] Based on above-mentioned raw material formula, propose a kind of preparation method of high-performance waterborne epoxy coating now, comprise the steps:

[0046] S101: Put 270g of deionized water and 2g of dispersant into a 1L dispersion tank, and disperse evenly for 10 minutes;

[0047] S102: Weigh 120g of iron oxide red, 55g of talc powder, 55g of barium sulfate, 35g of mica powder, 50g of aluminu...

Embodiment 3

[0053] A kind of high-performance waterborne epoxy paint, comprises the raw material formula of following mass parts:

[0054]Component A: 28 parts of deionized water, 39 parts of water-based epoxy emulsion, 13 parts of iron oxide red, 5 parts of talc powder, 6 parts of barium sulfate, 4 parts of mica powder, 4 parts of aluminum tripolyphosphate, 0.3 parts of thickener , 0.1 part of wetting agent, 0.3 part of defoamer, 0.1 part of dispersant, 0.2 part of nano zinc oxide;

[0055] B component: 10 parts of water-based epoxy curing agent, 10 parts of water.

[0056] Based on above-mentioned raw material formula, propose a kind of preparation method of high-performance waterborne epoxy coating now, comprise the steps:

[0057] S101: Put 280g of deionized water and 1g of dispersant into a 1L dispersion tank, and disperse evenly for 10 minutes;

[0058] S102: Weigh 130g of iron oxide red, 50g of talc powder, 60g of barium sulfate, 40g of mica powder, 40g of aluminum tripolyphospha...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a high-performance waterborne epoxy coating and a preparation method thereof. The high-performance waterborne epoxy coating comprises the following raw material formula in parts by mass: a component A prepared from 25 to 28 parts of deionized water, 35-45 parts of a waterborne epoxy emulsion, 11-13 parts of iron oxide red, 5-6 parts of talcum powder, 5-6 parts of barium sulfate, 3-4 parts of mica powder, 4-6 parts of aluminum triphosphate, 0.3-0.5 part of a thickening agent, 0.1-0.2 part of a wetting agent, 0.3-0.5 part of a defoaming agent, 0.1-0.3 part of a dispersingagent and 0.2-0.4 part of nano zinc oxide; and a component B comprising 10 parts of a water-based epoxy curing agent and 10 parts of water. An existing waterborne coating formula is optimized, the coating with the optimized formula is compared with a solvent type epoxy anticorrosive coating sold in the market, and the result shows that the waterborne epoxy coating relatively has more excellent corrosion resistance; in addition, a thermal analysis test shows that the coating has good thermal stability.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a high-performance water-based epoxy coating and a preparation method thereof. Background technique [0002] Epoxy resin coatings have been widely used in industry due to their high adhesion, excellent resistance to chemicals and solvents, high hardness, and good wear resistance. Traditional epoxy coatings are usually solvent-based or solvent-free. As people's requirements for environmental protection become increasingly urgent and strict, the development of water-based epoxy systems, that is, VOC-free systems, has become a new research direction. Water-based epoxy coatings have the advantages of no air pollution, safety and non-toxicity, and easy cleaning of construction tools. , can replace the widely used solvent-based coatings at present, and has great economic and social benefits. However, there are also some shortcomings and defects in waterborne epoxy resin coatings, wh...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09D163/00C09D5/08C09D7/61
CPCC08K2003/2272C08K2003/2296C08K2003/3045C08K2201/011C08K2201/014C08L2201/08C09D5/08C09D5/18C09D163/00C09D7/61C08K3/22C08K3/34C08K3/30C08K3/00
Inventor 吴键杨俊峰
Owner QINGYUAN YAKOO CHEM CO LTD