Ocean engineering corrosion prevention polyurea coating and preparation method thereof

A technology of marine engineering and polyurea, which is applied in anti-corrosion coatings, polyurea/polyurethane coatings, anti-fouling/underwater coatings, etc., and 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: 2019-12-13
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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  • Ocean engineering corrosion prevention polyurea coating and preparation method thereof
  • Ocean engineering corrosion prevention polyurea coating and preparation method thereof
  • Ocean engineering corrosion prevention polyurea coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The preparation of embodiment 1 modified nanometer 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 pH to 5.0, add 3 parts of silane coupling agent KH560, ultrasonically disperse evenly, dropwise add silver nitrate solution and copper sulfate solution to a final concentration of 0.05mol / L, after the dropwise addition is completed, the temperature is raised to 90 ° C, stirred for 25 minutes, decreased to room temperature, centrifugation and drying to obtain modified nano-titanium dioxide.

Embodiment 2

[0055] The preparation of embodiment 2 anti-corrosion polyurea coating

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

[0057] S2: put 66 parts of diphenyltoluene diisocyanate into the reaction kettle, heat up to 45°C, slowly add polycarbonate diol dropwise, heat up to 80°C after the dropwise addition, keep the temperature for 2 hours, take a sample to measure the NCO content, when the NCO When the content is 19.0%, it is lowered to room temperature, filtered, and sealed with nitrogen for storage for later use;

[0058] S3: Put 34 parts of amino-terminated polyether D2000 into the stirring tank, add 30 parts of diethyltoluenediamine, 10 parts of 4,4-bis-sec-butylaminodiphenylmethane, stir for 0.5 hour, 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 silica, and ...

Embodiment 3

[0059] The preparation of embodiment 3 anticorrosion polyurea coating

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

[0061] S2: Put 70 parts of diphenyltoluene diisocyanate into the reaction kettle, heat up to 50°C, slowly add polycarbonate diol dropwise, heat up to 80°C after the dropwise addition, keep the temperature for 2 hours, take samples to measure the NCO content, when the NCO When the content is 20.0%, it is lowered to room temperature, filtered, and sealed with nitrogen for storage for later 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 hour, add dihydroxyethylglycine 5 parts, 10 parts of Sea-Nine211, 17 parts of composite zinc-aluminum phosphate, 0.5 part of fumed silica, then added 4 parts of modified nano-titan...

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Abstract

The invention discloses an ocean engineering corrosion prevention polyurea coating which comprises a component A and a component B, wherein the component A comprises polyisocyanates, polycarbonate polyhydric alcohols; the component B comprises amine-terminated polyether, an amino chain extender, modified nano titanium diode, nano zinc oxide, a hydroxamino carboxylic acid compound, an anti-foulingagent, a corrosion prevention pigment and an anti-settling agent; and the modified nano titanium comprises the following preparation raw materials: nano titanium oxide, a surfactant, a silane couplingagent, silver nitrate and copper sulfate. The polyurea coating is good in seawater resistance and salt mist resistance, capable of preventing microorganism adhesion and applicable to ocean engineering corrosion prevention.

Description

technical field [0001] The invention belongs to the technical field of marine engineering chemical coatings, and particularly relates to a marine engineering anticorrosion 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 the world's major shipbuilding companies. The "Plan for Adjustment and Revitalization of Shipbuilding Industry" clearly calls for accelerating independent innovation, developing offshore engineering equipment, and gradually expanding the market share of offshore engineering equipment, focusing on the development of drilling platforms, production platforms, floating production and storage units, engineering vessels, modules and marine equipment. Engineering equipment supporting equipment. However, the operating ...

Claims

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Application Information

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Patent Type & Authority Applications(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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