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A kind of antifouling coating capable of releasing antifouling agent and preparation method thereof

An antifouling and antifouling technology, applied in antifouling/underwater coatings, coatings, paints containing biocides, etc. It is easy to long-term secretion and other problems to achieve the effect of low cost, high wear resistance and improved wear resistance

Active Publication Date: 2020-03-13
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the anti-biological activity is not easy to maintain and not easy to secrete for a long time, resulting in poor antifouling effect, which limits the development and application of marine antifouling coatings

Method used

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  • A kind of antifouling coating capable of releasing antifouling agent and preparation method thereof
  • A kind of antifouling coating capable of releasing antifouling agent and preparation method thereof
  • A kind of antifouling coating capable of releasing antifouling agent and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0050] The preparation process of component two is as follows:

[0051] First prepare mesoporous silica particles, the specific process is as follows:

[0052] 1) Add 30-60% cetyltrimethylammonium bromide into the container by mass percentage, then add distilled water, heat to 40-60°C to dissolve cetyltrimethylammonium bromide Finally, add 1 to 20% regulator while stirring;

[0053] 2) After stirring for 10 minutes, add 5-20% ethyl orthosilicate, 4-30% sodium silicate and 5-30% pore-enlarging agent and stir, and react at a constant temperature of 40-60°C for 24-36 hours;

[0054] 3) Stand at room temperature for 6-8 days, filter, and dry at 110°C for 1-4 hours to obtain a white powder that is mesoporous silica particles;

[0055] Then use the second component prepared by mesoporous silica particles, the specific process is as follows:

[0056] Add mesoporous silica particles into water, disperse evenly by ultrasonic, then add antifouling ingredients and keep stirring for 2-...

Embodiment 1

[0066] Hydrophobically modified antifouling agent-releasing antifouling coatings were prepared according to the following steps:

[0067] The preparation process of component one is as follows:

[0068] 1) In terms of mass percentage, 3% polytetramethylene ether glycol (PTMG) and 65% polyether polyol polyethylene glycol (PEG) are added to a three-necked flask (500ml) equipped with a thermometer and a stirrer. ), heated to 100°C, and vacuum dehydrated at 0.667kPa for 4h;

[0069] 2) Cool down to 65°C, add 4% of 4,4'-diphenylmethane diisocyanate (MDI) and 4% of bisphenol A epoxy resin;

[0070] 3) After reacting for 30 minutes, add 20% 1,4-butanediol for chain extension;

[0071] 4) After reacting for 1 hour, add 4% PU defoaming agent and stir rapidly. After the air bubbles are eliminated, stop the reaction to obtain component one.

[0072] The preparation process of component two is as follows:

[0073] First prepare mesoporous silica particles loaded with antifouling compo...

Embodiment 2

[0081] The preparation process of component one is as follows:

[0082] 1) In terms of mass percentage, 4% polytetramethylene ether glycol (PTMG) and 15% polyether polyol polyethylene glycol (PEG) are added to a three-necked flask (500ml) equipped with a thermometer and a stirrer. ), heated to 105°C, and vacuum dehydrated at 0.667kPa for 3h;

[0083] 2) Cool down to 65°C, add 10% 4,4'-diphenylmethane diisocyanate (MDI) and 60% bisphenol A epoxy resin;

[0084] 3) After reacting for 40 minutes, add 1% 1,4-butanediol for chain extension;

[0085] 4) After reacting for 2 hours, add 10% PU defoaming agent and stir rapidly. After the bubbles are eliminated, stop the reaction to obtain component one.

[0086] The preparation process of component two is as follows:

[0087] First prepare mesoporous silica particles, the process is as follows:

[0088] (1) In terms of mass percentage, add 40% cetyltrimethylammonium bromide into the container, then add distilled water, heat at 50°C...

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Abstract

The invention discloses an anti-fouling coating capable of releasing an anti-fouling agent and a preparation method thereof. The coating comprises 4,4'-diphenylmethane diisocyanate, polyether polyol polyethylene glycol, polytetramethylene ether glycol, polyester polyol polycaprolactone, 1,4-butanediol, bisphenol-A epoxy resin and a PU defoamer. A second component comprises mesoporous silica particles and an anti-fouling component. A first component is mixed with the second component according to a mass ratio of (20-50):1, so the anti-fouling coating capable of releasing the anti-fouling agentcan be obtained. The anti-fouling coating is capable of introducing oligomer polyalcohol and polycyanate, in the precondition of guaranteeing controllable release performance of the anti-fouling agent, not affecting excellent mechanical property and adhesive power and the like of polyurethane. At the same time, mesoporous silica has high wear resistance, wear resistance of the coating can be improved, and service life is prolonged. The method is simple in process, lower in cost, and suitable for industrial production without a toxicant release problem, so the coating has good application prospect in the ocean anti-fouling field.

Description

technical field [0001] The invention relates to the synthesis field of a marine antifouling coating, in particular to an antifouling coating capable of releasing an antifouling agent and a preparation method thereof. Background technique [0002] The development of marine equipment such as ships, submarines, and offshore platforms will directly promote the improvement of maritime transport and naval power in various countries, but the complex marine environment seriously restricts the performance of marine equipment, especially the serious damage caused by marine biofouling. harm. Biofouling is actually the formation of biological communities on the surface of marine equipment materials. The occurrence of biofouling will have a very serious impact on the service equipment in the marine environment, mainly reflected in: 1) a substantial increase in navigation resistance and a decrease in navigation speed; 2) a sharp increase in fuel consumption; 3) an accelerated corrosion r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/08C09D5/16C09D7/61C08G18/76C08G18/66C08G18/58C08G18/48C08G18/32C08G18/12
Inventor 秦立果冯新安张辉曾群锋董光能
Owner XI AN JIAOTONG UNIV
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