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A kind of betaine type ionic liquid modified coating and its preparation method and application

A technology of ionic liquid and betaine, which is applied in rosin coatings, antifouling/underwater coatings, coatings, etc., can solve problems such as high VOC content, poor water resistance, and short antifouling period, and achieve simple preparation process and smooth polishing The effect of stable rate and good anti-biofouling properties

Active Publication Date: 2020-07-10
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no mature environment-friendly water-based marine antifouling coating applied in the market. Some water-based antifouling coating technologies that have been reported generally have bottleneck problems such as high VOC content, short antifouling effect (less than 6 months), and poor water resistance.

Method used

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  • A kind of betaine type ionic liquid modified coating and its preparation method and application

Examples

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preparation example Construction

[0057] In the present invention, the preparation method of the betaine-type ionic liquid modified emulsion preferably comprises the following steps:

[0058] mixing betaine-type ionic liquid monomers, silicon acrylate monomers, acrylate monomers, acrylic acid, an emulsifier and the first part of water, and then emulsifying to obtain a monomer emulsion;

[0059] The initiator is dissolved in the second part of water to obtain an aqueous initiator solution;

[0060] Stir and mix sodium bicarbonate, remaining water, part of the monomer emulsion and part of the initiator aqueous solution, then raise the temperature to 80-81 °C, keep warm and continue stirring for 50-100 minutes to obtain the seed emulsion;

[0061] Add the remaining monomer emulsion and the remaining initiator aqueous solution dropwise to the seed emulsion, raise the temperature to 87-89°C and keep it warm for 50-70min, then cool down to 50-55°C, and add a pH regulator to the obtained system to obtain sugar beet ...

Embodiment 1

[0094] Preparation of betaine-type ionic liquid modified emulsion:

[0095] Weigh 8g betaine-type ionic liquid monomer (specifically 3-[N,N-dimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]ammonium]propane-1- Sulfonic acid inner salt), 48g triisopropyl silicon methacrylate, 19g butyl acrylate, 54g methyl methacrylate, 17g isobornyl methacrylate and 2.5g acrylic acid, mix well at room temperature (25°C) , add 3g of nonionic emulsifier OP-10, 1.5g of anionic emulsifier sodium dodecylsulfonate and 110g of deionized water, stir and emulsify at a speed of 600r / min for 30min to obtain a monomer emulsion; weigh 1.4g of Ammonium sulfate is dissolved in 20g deionized water to obtain an aqueous initiator solution;

[0096] Weigh 0.2g of sodium bicarbonate, 20g of deionized water, 75g of monomer emulsion and 3.2g of initiator aqueous solution, stir at a speed of 600r / min for 0.5h at room temperature, and then stir at 5°C / min under stirring conditions The heating rate was increased to 81°C, a...

Embodiment 2

[0102] The preparation of betaine-type ionic liquid modified emulsion and rosin emulsion is the same as in Example 1.

[0103] Preparation of betaine-type ionic liquid modified coating:

[0104] Mix 30g deionized water, 0.21g thickener (including 0.2g DeuRheo WT-05A and 0.01g hydroxyethyl cellulose), 0.4g water-based wetting and dispersing agent AC 8892, 0.2g water-based leveling agent DC57 and 0.4g water-based Stir and mix the defoamer DAPROAP7010 in the dispersing tank evenly, add 21g of cuprous oxide, 4g of 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one and 6.2g of pigments and fillers (including talc powder , Zinc oxide and mica powder each 1.4g, organic bentonite 2g), under the condition of 800r / min high-speed dispersion 30min, grind, grind to fineness less than 40 μm, add 26g betaine type ionic liquid modified emulsion, 11g rosin emulsion and 0.6g of ethylene glycol butyl ether was stirred and dispersed for 30min under the condition of 200r / min, filtered and discharged to ...

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Abstract

The invention provides a betaine-type ionic liquid modified coating and a preparation method and application thereof, belonging to the technical field of marine antifouling coatings. The betaine-type ionic liquid modified coating provided by the invention comprises the following components in mass percentage: 20-30% of betaine-type ionic liquid modified emulsion, 5-15% of rosin emulsion, 20-30% of antifouling agent, pigment 3-10% of filler, 1-2% of water-based auxiliary agent, 0.5-1% of film-forming auxiliary agent, and the balance is water. The betaine-type ionic liquid modified coating provided by the invention has an ultra-low VOC content (less than 20g / L), is environmentally friendly, has good mechanical properties of the formed paint film, has a stable self-polishing rate, and has excellent water immersion resistance and antifouling properties performance.

Description

technical field [0001] The invention relates to the technical field of marine antifouling coatings, in particular to a betaine-type ionic liquid modified coating and its preparation method and application. Background technique [0002] Marine biofouling is very harmful to ships, marine engineering facilities, and marine aquaculture. It will increase the resistance of ships to sail, accelerate the corrosion of marine engineering facilities, and pollute the marine ecological environment. Among the many technologies to prevent and control marine biofouling, the use of antifouling coatings is the most economical and effective means. However, most of the commonly used antifouling coatings are solvent-based, and the VOC content is higher than 400g / L, and organic solvents are added as thinners during the coating process, resulting in the release of a large amount of organic solvents, polluting the environment and endangering the health of construction workers . Therefore, marine ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/12C09D193/04C09D5/16C08F220/14C08F230/08C08F220/18C08F220/06C08F220/38
CPCC09D143/04C09D5/1662C09D5/1618C09D5/1625C08F220/14C08K2003/2248C08L93/04C08K13/02C08K3/22C08K5/21C08K5/39C08K5/46C08K5/0091C08F230/08C08L93/00C08F220/1804C08F220/1811C08F220/585C08F220/06
Inventor 周峰裴小维杨武芳张建斌
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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