A kind of ocean engineering anticorrosion polyurea coating and preparation method thereof

A marine engineering and polyurea technology, applied in anti-corrosion coatings, polyurea/polyurethane coatings, anti-fouling/underwater coatings, etc., can solve the problems of unsatisfactory bonding force between anti-corrosion polyurea coatings and metal structures and unsatisfactory anti-corrosion effects , to achieve the effect of strong reciprocating force, strong antibacterial effect, and not easy to fall off

Active Publication Date: 2021-03-12
SWD HIGH TECH MATERIALS JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In summary, the bonding force and anti-corrosion effect of anti-corrosion polyurea coatings applied to marine engineering in the prior art are still unsatisfactory

Method used

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  • A kind of ocean engineering anticorrosion polyurea coating and preparation method thereof
  • A kind of ocean engineering anticorrosion polyurea coating and preparation method thereof
  • A kind of ocean engineering anticorrosion polyurea coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The preparation of embodiment 1 modified nano titanium dioxide

[0051] Disperse 50 parts of nano-titanium dioxide in a hydrogen peroxide solution with a concentration of 25%, stir for 30 minutes, filter, wash with acetone, and dry; disperse the dried nano-titanium dioxide in water, add 5 parts of surfactant triethanolamine, Adjust the pH to 5.0, add 3 parts of silane coupling agent KH560, ultrasonically disperse evenly, add dropwise silver nitrate solution and copper sulfate solution to a final concentration of 0.05mol / L, raise the temperature to 90°C after the dropwise addition, stir for 25 minutes, drop to room temperature, centrifuged and dried to obtain modified nano-titanium dioxide.

Embodiment 2

[0055] The preparation of embodiment 2 anticorrosion polyurea coatings

[0056] S1: Dehydrate 34 parts of polycarbonate diol at 120°C and a vacuum of -0.08Mpa for 2 hours, and lower it to room temperature for later use;

[0057] S2: Put 66 parts of diphenyltoluene diisocyanate into the reaction kettle, raise the temperature to 45°C, slowly add polycarbonate diol dropwise, after the addition, raise the temperature to 80°C, keep it warm for 2 hours, take samples to measure the NCO content, when NCO When the content is 19.0%, it is lowered to room temperature, filtered, filled with nitrogen and sealed for future use;

[0058] S3: Put 34 parts of amino-terminated polyether D2000 into the mixing tank, add 30 parts of diethyltoluenediamine, 10 parts of 4,4-bis-sec-butylaminodiphenylmethane, stir for 0.5 hours, add hydroxyethyl ethylene diamine 5 parts of amine triacetic acid, 8 parts of Sea-Nine211, 14.7 parts of composite zinc aluminum phosphate, 0.3 part of fumed silicon dioxide,...

Embodiment 3

[0059] The preparation of embodiment 3 anticorrosion polyurea coatings

[0060] S1: Dehydrate 50 parts of polycarbonate diol at 110°C and a vacuum of -0.08Mpa for 2 hours, and lower it to room temperature for later use;

[0061] S2: Put 70 parts of diphenyltoluene diisocyanate into the reaction kettle, raise the temperature to 50°C, slowly add polycarbonate diol dropwise, after the addition, raise the temperature to 80°C, keep it warm for 2 hours, take samples to measure the NCO content, when NCO When the content is 20.0%, it is lowered to room temperature, filtered, filled with nitrogen and sealed for future use;

[0062] S3: Put 40 parts of amino-terminated polyether T5000 into the mixing tank, add 30 parts of diethyltoluenediamine, 10 parts of 4,4-bis-sec-butylaminodiphenylmethane, stir for 0.5 hours, add dihydroxyethylglycine 5 parts, 10 parts of Sea-Nine211, 17 parts of composite zinc-aluminum phosphate, 0.5 part of fumed silica, then add 4 parts of modified nano-titaniu...

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Abstract

Disclosed is a polyurea coating acting against ocean engineering corrosion. The polyurea coating comprises a component A and a component B, wherein the component A comprises a polyisocyanate and a polycarbonate polyol, and the component B comprises an amine-terminated polyether, an amino chain extender, a modified nano titanium dioxide, a nanometer zinc oxide, a hydroxyamino carboxylic acid compound, an anti-foulant, an anti-rust pigment and an anti-settling agent. The raw materials for preparing the modified nano titanium dioxide comprises nano titanium dioxide, a surfactant, a silane coupling agent, silver nitrate and copper sulfate. The polyurea coating has a strong seawater and salt fog resistance, can resist microbial adhesion, and is suitable for acting against marine engineering corrosion.

Description

technical field [0001] The invention belongs to the technical field of marine engineering chemical coatings, in particular to a marine engineering anti-corrosion polyurea coating. Background technique [0002] The 21st century is the marine century, and the marine economy has gradually become a new growth point of my country's national economy. With the rapid rise of the marine industry, marine engineering equipment has become a new profit growth point for major shipbuilding companies in the world. The "Ship Industry Adjustment and Revitalization Plan" clearly requires to speed up independent innovation, develop offshore engineering equipment, gradually expand the market share of offshore engineering equipment, and focus on the development of drilling platforms, production platforms, floating production and storage devices, engineering operation vessels, modules and marine equipment. Engineering equipment supporting equipment. However, the operating environment of marine e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D5/08C09D5/14C09D5/16
CPCC08K2003/2241C08K2201/011C09D5/08C09D5/14C09D5/1625C09D175/04C08K9/06C08K3/22C08K3/32C08K3/36C08K13/06
Inventor 王道前连联益肖国亮
Owner SWD HIGH TECH MATERIALS JIANGSU
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