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Heavy-duty corrosion-resistant spraying polyurea coating and preparation method thereof

A heavy-duty anti-corrosion, polyurea technology, applied in the field of chemical materials, can solve the problems of poor corrosion resistance of organic solvents, easy leakage of joints, complicated construction, etc., to achieve good corrosion resistance of organic solvents, prolong service life, and reduce maintenance. effect of cost

Inactive Publication Date: 2014-05-28
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional heavy-duty anti-corrosion materials include epoxy, polyurethane, fiberglass, rubber, plastic, etc., which have achieved good results in practical applications, but there are still problems such as poor anti-corrosion performance, polluting the environment, easy leakage of joints, and complicated construction. many ills
[0004] Studies in recent years have found that although spraying polyurea coatings has excellent anti-corrosion performance, fast construction performance, no pollution to the environment, and the overall seamless coating film during spraying construction, it has been widely used in power plants, petroleum, and chemical storage tanks. , steel structure anticorrosion, sewage treatment pools and other fields have been increasingly widely used, but the commonly used spray polyurea coatings have poor corrosion resistance to organic solvents, which limits their application in some fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The A component is a semi-prepolymer synthesized by the following raw materials in parts by weight: 75 parts of diphenylmethane diisocyanate WANNATE MDI-100 (Yantai Wanhua), 25 parts of polytetrahydrofuran ether glycol PTMEG1000 (Basf, Germany) ;

[0025] The B component is made of the following raw materials in parts by weight: 30 parts of liquid polysulfide rubber THIOPLAST G22 (Akzo Nobel), 30 parts of liquid polysulfide rubber THIOPLAST G44 (Akzo Nobel), amine chain extender diethylene glycol 26 parts of toluenediamine Ethacure-100 (Albemarle, USA), 10 parts of amine chain extender 4,4-bis-sec-butylaminodiphenylmethane WANALINK6200 (Yantai Wanhua), 2 parts of carbon black MA100 (Mitsubishi, Japan), Ultraviolet absorber B97 (Germany BASF) 2 parts.

[0026] The preparation method of the heavy-duty anti-corrosion spraying polyurea coating of this example comprises the following steps:

[0027] The preparation method of component A: Add 25 parts of polytetrahydrofuran...

Embodiment 2

[0033] The A component is a semi-prepolymer synthesized from the following raw materials in parts by weight: 80 parts of diphenylmethane diisocyanate WANNATE MDI-100LL (Yantai Wanhua), 20 parts of polypropylene glycol ether DG-1000 (Tianjin Dagu) share;

[0034]The B component is made of the following raw materials in parts by weight: 25 parts of liquid polysulfide rubber THIOPLAST G22 (Akzo Nobel), 35 parts of liquid polysulfide rubber THIOPLAST G44 (Akzo Nobel), amine chain extender diethylene glycol 28 parts of toluenediamine Ethacure-100 (Albemarle, USA), 8 parts of amine chain extender 4,4-bis-sec-butylaminodiphenylmethane WANALINK6200 (Yantai Wanhua), 2 parts of carbon black MA100 (Mitsubishi, Japan), Ultraviolet absorber B97 (Germany BASF) 2 parts.

[0035] The preparation method of the heavy-duty anti-corrosion spraying polyurea coating of this example comprises the following steps:

[0036] Preparation method of component A: Add 20 parts of polypropylene glycol ethe...

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PUM

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Abstract

The invention discloses heavy-duty corrosion-resistant spraying polyurea coating and a preparation method thereof. The coating comprises an A component and a B component, wherein the A component comprises 60-80 parts by weight of isocyanate and 20-40 parts by weight of polyol, and the B component comprises 40-70 parts by weight of liquid-state polysulfide rubber, 20-50 parts by weight of a liquid-state amine chain extender, 0-10 parts by weight of pigment and filling materials, and 0-10 parts by weight of an auxiliary agent. The coating has excellent coating corrosion resistance, and particularly has excellent resistance to organic solvent corrosion. The coating is particularly suitable as anti-corrosion protection materials for petroleum pipelines, chemical engineering storage tanks, and the like.

Description

technical field [0001] The invention relates to a paint, in particular to a heavy-duty anti-corrosion polyurea paint for spraying and a preparation method thereof, belonging to the field of chemical materials. Background technique [0002] In petroleum, chemical industry, pipeline, marine engineering and other anti-corrosion fields, most equipment and pipelines are corroded due to the existence of corrosive media. The concentration and temperature of corrosive media change at any time, so the corrosion is very serious. Using various anti-corrosion materials to make the covering layer or lining can completely isolate the metal equipment from the corrosive medium, prevent corrosion and abrasion of the equipment, improve the corrosion resistance, wear resistance, safety and prolong the service life of the equipment. [0003] Heavy-duty anti-corrosion materials refer to anti-corrosion materials that can be used for a long time in harsh corrosive environments, and their service l...

Claims

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Application Information

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IPC IPC(8): C09D175/02C09D5/08C08G18/66C08G18/64
Inventor 王新锋李红英段文锋
Owner BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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