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Anticorrosive static-conductive solvent-free polyurea coating as well as preparation method and application thereof

A solvent-free, static-conductive technology, applied in conductive coatings, anti-corrosion coatings, polyurea/polyurethane coatings, etc., can solve the problems of accelerated corrosion of the inner wall of oil storage tanks, high labor costs, and long construction periods, so as to improve anti-corrosion performance, Excellent mechanical properties, excellent acid and alkali resistance

Active Publication Date: 2022-03-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the paint film formed by the coating prepared by graphite and carbon black as filler is dark in color, and it is difficult to directly observe the corrosion of the inner wall of the oil storage tank by visual method. The base material becomes anodic and accelerates the corrosion of the inner wall of the oil storage tank
In addition, the thickness of epoxy coatings is limited in one application. In order to achieve the required thickness, it usually needs multiple repeated application, which leads to long construction period and high labor cost.

Method used

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  • Anticorrosive static-conductive solvent-free polyurea coating as well as preparation method and application thereof
  • Anticorrosive static-conductive solvent-free polyurea coating as well as preparation method and application thereof
  • Anticorrosive static-conductive solvent-free polyurea coating as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A anti-conductive polyurea coating of corrosion-conducting static electricity, which is shown in the following table:

[0047] Table 1 Composition Table of Anti-Conductive Static Solventless Polyurea Coatings

[0048]

[0049]

[0050] The preparation method of the above-mentioned anti-corrosion-conducting solventless polyurea coating includes the following steps:

[0051] 1) Mix the polymerispartate resin F520, the castor oil-based polyether polyol D1145 and the end ammonia polyether D2000, dispersed 10 min under the condition of 1000 rpm, and then added to the dispersant BYK-9076, and the defoaming agent KeperPlo- 768, anti-sediment BYK-410, wetting agent BYK-333 and dipropylene glycidate, continued to disperse 10 min, add triosphate, dispersion 15 min under the conditions of rotational speed 2300 rpm, and then add the conductive cloud powder Yj and 3A molecular sieve, mix well, gave a component, and multikylene polyphenyl polyisocyanate PM-200 as a b component;

[00...

Embodiment 2

[0054] A anti-conductive polyurea coating of corrosion-conducting static electricity, which is shown in the following table:

[0055] Table 2 Composition Table of Anticorrosive Distortion of Solventless Polyurea Coatings

[0056]

[0057]

[0058] The preparation method of the above-mentioned anti-corrosion-conducting solventless polyurea coating includes the following steps:

[0059] 1) Mix the polymerispartate resin F520, the castor oil-based polyether polyol D1145 and the end ammonia polyether D2000, dispersed 10 min under the condition of 1000 rpm, and then added to the dispersant BYK-9076, and the defoaming agent KeperPlo- 768, anti-sedent BYK-410, wetting agent BYK-333 and dipropylene glycol methyl ether acetate, continued to disperse 10 min, add zinc phosphate, dispersion 15 min under the condition of 2300 rpm, then add conductive microfa powder YJ and 3A molecular sieve The mix is ​​uniform to obtain a component a component, and the polymethylene polyphenyl polyisocyan...

Embodiment 3

[0062] A anti-conductive polyurea coating of corrosion-conducting static electricity, which is shown in the following table:

[0063] Table 3 Composition Table of Anti-Conductive Static Solventless Polyurea Coatings

[0064]

[0065]

[0066] The preparation method of the above-mentioned anti-corrosion-conducting solventless polyurea coating includes the following steps:

[0067] 1) Mix the polymetanpartate resin F520, castor oil-based polyether polyol H854 and end ammonia polyether D2000, and dispersed 10 min under the condition of 1000 rpm, and then added to the dispersant BYK-9076, defoamer KeperPlo- 768, anti-sedent BYK-410, wetting agent BYK-333 and dipropylene glycol methyl ether acetate, continued to disperse 10 min, then add zinc acid aluminum, disperse 15 min under the condition of 2300 rpm, and then add conductive cloud powder YJ and 3A Molecular sieve, mixing is uniform, to obtain a component, and multi methylene polyphenyl polyisocyanate PM-200 is used as B compone...

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Abstract

The invention discloses an anti-corrosion static-conductive solvent-free polyurea coating as well as a preparation method and application thereof. The anticorrosive static-conductive solvent-free polyurea coating is composed of a component A and a component B. The component A comprises polyaspartic acid ester resin, castor oil-based polyether polyol, amino-terminated polyether, antirust pigment and filler, conductive filler, a dispersing agent, a defoaming agent, an anti-settling agent, a wetting agent, a diluent and a moisture scavenger, and the component B comprises an isocyanate curing agent. The mass ratio of the component A to the component B is (3: 1)-(5: 1). The preparation method of the anti-corrosion static-conductive solvent-free polyurea coating is very simple, and all the raw materials are uniformly mixed in batches. The corrosion-resistant static-conductive solvent-free polyurea coating disclosed by the invention has the advantages that the maximum one-time brushing thickness can reach 1mm, the coating thickness can be regulated and controlled by changing a construction process, and a formed paint film has excellent mechanical property, corrosion resistance, static conductivity and medium resistance and is suitable for being used as an inner wall protective coating of an oil storage tank.

Description

Technical field [0001] The present invention relates to the field of metallic anti-corrosion technology, and more particularly to a solventless polyurea coating of corrosion-conducting static electricity and a preparation method thereof. Background technique [0002] The oil storage tank is a container that stores oil, which can be divided into two categories: non-metallic oil tanks and metal oil tanks. The metal oil tank has the advantages of low cost, not easy to leak, convenient construction, and easy maintenance, and is widely used. Metal oil tanks inevitably prevent corrosion problems during use, which may cause severe problems such as oil pollution, oil leakage caused explosion. At present, domestic and foreign mainly is mainly to improve the anti-corrosion resistance of the metal oil tank by painting the static electricity, and most often uses epoxy-type lead-resistant anti-corrosion coating, and mostly use conductive graphite and carbon black to coating. Static electricit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/02C09D5/24C09D5/08C09D7/65C09D7/45
CPCC09D175/02C09D5/24C09D5/084C09D7/65C09D7/45C08K2201/001C08L2201/04C08K2003/328C08K2003/327C08L83/12C08L75/02C08K3/34C08K3/32
Inventor 陈中华曾艺星陈博远
Owner SOUTH CHINA UNIV OF TECH