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Waterborne binder and preparation method and application thereof

A technology of water-based adhesive and film-forming agent, which is applied in coatings, primers, anti-corrosion coatings, etc., can solve the problems of unstable performance and construction process of domestic hot-melt adhesives, non-compliance with environmental protection requirements, and low wet adhesion.

Active Publication Date: 2018-02-02
BAUHINIA PAINTS SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages: large pollution, does not meet environmental protection requirements
Disadvantages: imported hot melt adhesives are expensive, require high equipment, and domestic hot melt adhesives are unstable in performance and construction process
Disadvantages: higher price
But the above coatings failed to solve the problem of low wet adhesion

Method used

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  • Waterborne binder and preparation method and application thereof
  • Waterborne binder and preparation method and application thereof
  • Waterborne binder and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 8

[0062] A kind of preparation method of water-based binder, described preparation method comprises the following steps:

[0063] (1) Mix 24 parts of water, 1 part of wetting and dispersing agent and 0.2 part of defoamer, add 10 parts of titanium dioxide, 1 part of anti-rust pigment and 2 parts of mica powder to disperse to a fineness of 40 μm, reduce the speed to 800 rpm, Then add 1 part of dodecyl alcohol ester, and disperse to obtain filler slurry;

[0064] (2) Mix the filler slurry obtained in step (1) with the emulsion at 800rpm for 10 minutes, add 0.5 parts of rheological additives, 0.2 parts of anti-flash rust agent, 0.2 parts of substrate wetting agent and 0.2 parts of defoamer and continue mixing , reduce the rotating speed to 300rpm, then add 6 parts of water to obtain component A;

[0065] (3) Mix component A obtained in step (2) with 3 parts of amine curing agent to obtain a water-based binder.

Embodiment 9

[0067] A kind of preparation method of water-based binder, described preparation method comprises the following steps:

[0068] (1) Mix 24 parts of water, 1 part of wetting and dispersing agent and 0.2 part of defoamer, add 10 parts of titanium dioxide, 1 part of anti-rust pigment and 2 parts of mica powder to disperse to a fineness of 50 μm, reduce the speed to 1200 rpm, Then add 1 part of dodecyl alcohol ester, and disperse to obtain filler slurry;

[0069] (2) Mix the filler slurry obtained in step (1) with the emulsion at 1200rpm for 5 minutes, add 0.5 parts of rheological additives, 0.2 parts of anti-flash rust agent, 0.2 parts of substrate wetting agent and 0.2 parts of defoamer and continue mixing , reduce the rotating speed to 700rpm, then add 6 parts of water to obtain component A;

[0070] (3) Mix component A obtained in step (2) with 3 parts of amine curing agent to obtain a water-based binder.

Embodiment 10

[0072] A kind of preparation method of water-based binder, described preparation method comprises the following steps:

[0073] (1) Mix 24 parts of water, 1 part of wetting and dispersing agent and 0.2 part of defoamer, add 10 parts of titanium dioxide, 1 part of anti-rust pigment and 2 parts of mica powder to disperse to a fineness of 45 μm, reduce the speed to 1000 rpm, Then add 1 part of dodecyl alcohol ester, and disperse to obtain filler slurry;

[0074] (2) Mix the filler slurry obtained in step (1) with the emulsion at 1000rpm for 8 minutes, add 0.5 parts of rheological additives, 0.2 parts of anti-flash rust agent, 0.2 parts of substrate wetting agent and 0.2 parts of defoamer and continue mixing , reduce the rotating speed to 500rpm, then add 6 parts of water to obtain component A;

[0075] (3) Mix component A obtained in step (2) with 3 parts of amine curing agent to obtain a water-based binder.

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Abstract

The invention provides a waterborne binder, comprising components A and B; the component is made from, by weight, 40-60 parts of waterborne epoxy acrylic emulsion, 22-48 parts of a pigment-filler, 1-2parts of a film-forming agent, 2-3 parts of an aid, and 12-30 parts of water; the component B is made from, by weight, 3-4.5 parts of a curing agent. The waterborne binder is applicable to containerprimers, has the same effect as oil primers to protect the integrity of container bodies, has excellent wet adhesion, pull adhesion and pull strength, has an equivalent active cycle to oil primers, has good resistance to salt fog, is green, and never causes a reduction to the customers' existing production rhythm.

Description

technical field [0001] The invention belongs to the field of adhesives, and relates to a water-based adhesive. Background technique [0002] The container cold box adhesive is used between the substrate and the thermal insulation foam layer, which can provide good interlayer adhesion between the substrate and the thermal insulation foam layer, and when the box body is damaged and water invades the thermal insulation layer, it can Ensure that the foam layer does not fall off from the box. At present, there are three main solutions for adhesive primers for container cold boxes: [0003] (1) Oily epoxy primer. Advantages: It has been widely used for a long time, the technology is mature, the price is cheap, and the performance is stable. Disadvantages: large pollution, does not meet environmental protection requirements [0004] (2) Hot melt adhesive. Advantages: environmental protection, stable performance of hot melt adhesives, but most of the application examples are im...

Claims

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Application Information

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IPC IPC(8): C09D163/10C09D5/00C09D5/08C09D7/61C09D7/63
CPCC08K2003/2241C09D5/002C09D5/084C09D163/10C08L83/12C08K3/22C08K3/34C08K13/02
Inventor 潘倩
Owner BAUHINIA PAINTS SHANGHAI CO LTD
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