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A high-performance self-cleaning epoxy resin coating and its preparation method

An epoxy resin coating, epoxy resin technology, applied in epoxy resin coatings, coatings, antifouling/underwater coatings, etc., can solve problems such as difficulty in resisting marine microorganisms, cumbersome preparation methods, and high brittleness of coatings. problem, to achieve the effect of strengthening anti-wear and anti-wear, extensive antibacterial effect, and low surface energy

Inactive Publication Date: 2021-09-07
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention introduces many additives into the coating, which makes the preparation process cumbersome and has many limitations in actual use.
Chinese patent CN 108192498 A discloses an underwater super-oleophobic self-cleaning UV-cured metal coating and its coating, preparation method and application. The metal coating in this invention has a special composite structure of nanometer and micron, and its surface has affinity The water polymer molecular brush structure can effectively avoid the adhesion of underwater oil pollution, but it is difficult to avoid the adhesion of plankton in the ocean, which makes the use of this coating have certain limitations
However, the coating prepared by pure epoxy resin is brittle and difficult to resist the adhesion of marine microorganisms, plants and animals, which causes serious marine fouling problems.

Method used

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  • A high-performance self-cleaning epoxy resin coating and its preparation method
  • A high-performance self-cleaning epoxy resin coating and its preparation method
  • A high-performance self-cleaning epoxy resin coating and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] First, add 3-glycidyl etheroxypropyl trimethoxysilane and neopentyl glycol into a three-necked flask at a molar ratio of 1:1, and react under nitrogen protection, and the reaction temperature is controlled between 120 and 160°C , until no more distillate was formed. After that, add triclosan and hyperbranched polysiloxane into the three-necked flask at a mass ratio of 1:10, pass nitrogen, control the temperature at 120-150°C, and the reaction time is 6 hours. The reaction product is triclosan-grafted hyperbranched polysiloxane.

[0043] After that, prepare epoxy coating slurry: take 10g E-51 resin, 8g methyltetrahydrophthalic anhydride and 0.1g DMP-30, add 2g TCS-g-HBPSi, stir well and add 20ml N,N-dimethyl Diethyl acetamide (DMAC) was used to adjust the epoxy coating slurry to a suitable viscosity. Then pour the prepared slurry into the spray gun, adjust the airflow size of the spray gun and the size of the nozzle to the appropriate flow rate. Then use a spray gun t...

Embodiment 2

[0046] First, add 3-glycidyloxypropyltrimethoxysilane and 1,3-propanediol into a three-necked flask at a molar ratio of 1:1, and react under nitrogen protection, and the reaction temperature is controlled between 110 and 150°C time until no more distillate was formed. Afterwards, add triclosan and hyperbranched polysiloxane into a three-necked flask with a mass ratio of 1:8, pass nitrogen, control the temperature at 120-150°C, and the reaction time is 6 hours. The reaction product is triclosan-grafted hyperbranched polysiloxane.

[0047] Afterwards, prepare the slurry of epoxy coating: get 10g E-51 resin and 3.3g DDS, add 1.67g TCS-g-HBPSi, add 20ml N after stirring evenly, N-dimethylacetamide (DMAC), will The epoxy coating slurry is adjusted to a suitable viscosity. Then pour the prepared slurry into the spray gun, adjust the airflow size of the spray gun and the size of the nozzle to the appropriate flow rate. Then use a spray gun to evenly spray the epoxy coating slurry ...

Embodiment 3

[0050] First, add 3-glycidyl etheroxypropyl trimethoxysilane and diethylene glycol into a three-necked flask at a molar ratio of 1:1, and react under nitrogen protection, and the reaction temperature is controlled at 110-160°C between until no more distillate was formed. After that, add triclosan and hyperbranched polysiloxane into the three-necked flask at a mass ratio of 1:10, pass nitrogen, control the temperature at 120-150°C, and the reaction time is 6 hours. The reaction product is triclosan-grafted hyperbranched polysiloxane.

[0051] After that, prepare epoxy coating slurry: take 10g E-44 resin, 6g methyltetrahydrophthalic anhydride and 0.1g DMP-30, add 1.5g TCS-g-HBPSi, stir well and add 15ml N,N-di Methylformamide (DMF), to adjust the epoxy coating slurry to a suitable viscosity. Then pour the prepared slurry into the spray gun, adjust the airflow size of the spray gun and the size of the nozzle to the appropriate flow rate. Then use a spray gun to evenly spray th...

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PUM

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Abstract

The invention relates to a high-performance self-cleaning epoxy resin coating and a preparation method thereof. The mass parts of the components are: 30-60 parts of epoxy resin, 5-25 parts of hyperbranched polysiloxane grafted with triclosan alkane TCS‑g‑HBPSi and 20‑45 parts of curing agent. Hyperbranched polysiloxane has a large Si-O bond length and long bond angle, which has good flexibility and can improve the desorption ability of foulants. Secondly, it has low surface energy, which can reduce the adhesion of fouling organisms and materials ability (fouling is very weak on the adhesion interface, and can be easily removed by self-weight, water impact and auxiliary equipment cleaning), and again, the terminal contains a large number of active functional groups that can increase the bonding between the coating and the substrate interface, and it The branched spherical elastic structure with holes can enhance the wear-reducing and anti-wear properties of the coating. In addition, as a broad-spectrum antibacterial agent, triclosan can exert its efficacy by grafting it to the end of hyperbranched polysiloxane. Therefore, the invention utilizes triclosan-grafted hyperbranched polysiloxane (TCS-g-HBPSi) modified epoxy resin to prepare a high-performance self-cleaning coating.

Description

technical field [0001] The invention belongs to a coating material used in a seawater environment, and relates to a high-performance self-cleaning epoxy resin coating and a preparation method thereof. Background technique [0002] The ocean contains immeasurable resources, and now the development and utilization of ocean resources is an important development strategy for our country. However, the marine industry and marine activities inevitably encounter the problem of marine biological pollution. Marine biofouling refers to the biofouling formed by the adsorption, growth and reproduction of marine microorganisms, plants and animals on the surface submerged in seawater. It will cause huge losses to marine engineering equipment such as ships, nuclear power plants and oil production platforms. For example, the hull becomes rough due to the adhesion of marine organisms, and at the same time, the weight increases, resulting in a significant increase in navigation resistance and...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D163/00C09D183/08C09D5/16C08G77/385
CPCC08G77/385C09D5/1637C09D5/1675C09D163/00C08L83/08
Inventor 颜红侠郭留龙白天王莲莲张渊博
Owner NORTHWESTERN POLYTECHNICAL UNIV
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