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Antifouling coating material based on amphiphilic sol and preparation method thereof

An anti-fouling coating and coating material technology, applied in the direction of coating, etc., can solve the problems of difficult synthesis technology and screening, short anti-fouling period, complicated process, etc., and achieve the effect of significant anti-protein adsorption.

Active Publication Date: 2018-04-06
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, they all face the common defect of short anti-pollution period.
In addition, they also have the disadvantages of difficult synthesis technology and screening, complicated procedures, selectivity against biological adhesion, and poor physical and chemical stability.

Method used

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  • Antifouling coating material based on amphiphilic sol and preparation method thereof
  • Antifouling coating material based on amphiphilic sol and preparation method thereof
  • Antifouling coating material based on amphiphilic sol and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In a three-necked flask equipped with a stirrer, a thermometer, and a dropping funnel, add 30g of octyltrimethoxysilane, 48g of ethyl orthosilicate, 22g of octadecyltrimethoxysilane, and 15g of polyethylene glycol siloxane , 20g of silica sol, 100g of absolute ethanol, 10g of hydrochloric acid, and 10g of deionized water were heated to 50°C, kept at reflux and stirred for 12 hours, and cooled to obtain an amphiphilic sol. The sol is uniformly mixed with fillers, resins, additives and other components to prepare a coating. Among them, amphiphilic sol accounted for 35 wt%, dihydroxy-terminated polydimethylsiloxane 7 wt%, silica powder 15 wt%, titanium dioxide powder 3 wt%, diluent 36 wt%, catalyst 3 wt% %, leveling agent 1wt%, the coating is cured at 30 ℃ to form a film.

Embodiment 2

[0031] In a three-necked flask equipped with a stirrer, a thermometer, and a dropping funnel, add 50g of tetraethyl orthosilicate, 16g of hexadecyltrimethoxysilane, 25g of methyltrimethoxysilane, and 10g of polyethylene glycol siloxane , 15g of zirconia sol, 100g of absolute ethanol, 10g of deionized water and 5g of tetraethyl titanate, the temperature was controlled to 30°C, kept at reflux and stirred for 48 hours, then cooled to obtain the sol. The sol is mixed with a diluent, a leveling agent, etc. to prepare a coating material. Among them, the amphiphilic sol accounts for 30wt%, diluent 38wt%, ferric oxide powder 10wt%, leveling agent 2wt%, and the coating is cured at room temperature to form a film coating.

Embodiment 3

[0033] In a three-necked flask equipped with a stirrer, a thermometer, and a dropping funnel, add 30 g of methyl orthosilicate, 10 g of isobutyltrimethoxysilane, 23 g of dodecyltrichlorosilane, and 5 g of polyethylene glycol under nitrogen. Siloxane, 27g ZrCl4, 70g absolute ethanol, 15g deionized water and 3g nitric acid were heated up to 40°C while stirring, kept at reflux and stirred for 18 hours to obtain a sol. The sol is mixed with organic fluorosilicone resin, diluent, catalyst, cross-linking agent and leveling agent to prepare coating. Among them, the sol accounts for 30wt%, organic fluorine-silicone resin 20wt%, diluent 30wt%, catalyst 1wt%, crosslinking agent 2wt%, ferric oxide powder 5wt%, zirconia powder 10wt% %, leveling agent 2 wt%, the coating is cured at room temperature to form a film coating.

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PUM

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Abstract

The invention discloses an antifouling coating material based on amphiphilic sol. The antifouling coating material comprises the following components by weight: 20-70 percent of amphiphilic sol, 0-50 percent of resin, 0.5-50 percent of pigments and fillers, 0-10 percent of a cross-linking agent, 0-5 percent of a catalysts, 0.5-3 percent of an additive, and the balance of a solvent. The coating material provided by the invention can be cured and film-formed at normal temperature and normal pressure, and is convenient to use, and free of a heat source, energy consumption is reduced, and the coating material provided by the invention contains an anti-protein and antibacterial PEG chain segment, thereby having better organism adhesive resistance; the coating material can be constructed on the surfaces of various substrates (such as glass, metal, plastics and various decorative boards), and provides favorable antifouling performance for the substrates.

Description

technical field [0001] The invention relates to an antifouling coating material based on amphiphilic sol. Background technique [0002] Microbial fouling is a major problem in fields such as biomedicine, marine engineering, and food packaging. For example, the attachment of marine fouling organisms to the surface of underwater structures (especially ship hulls) will increase surface frictional resistance, reduce ship speed, increase fuel consumption, and cause huge economic losses. Statistics show that when the marine biofouling rate of the ship's hull is only 5%, the resistance of the ship's navigation is equivalent to twice that of a ship without fouling, and the fuel consumption increases by 10%, or even increases by 40%. Therefore, appropriate measures must be taken to prevent the attachment of marine organisms. The most effective protective measure is to coat the surface of the hull with a special antifouling paint with strong corrosion resistance and anti-biofouling p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D183/12C09D7/61C09D7/63
Inventor 孙小英商丹杭建忠施利毅陈亮金鹿江翁斌程章
Owner SHANGHAI UNIV
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