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Environment-friendly antifouling paint as well as preparation method and application thereof

An antifouling coating, an environmentally friendly technology, applied in the field of coatings, can solve problems affecting human health and ecological safety, high VOC content, organic solvent release, etc., achieve excellent anti-biofouling properties, strong mechanical properties of the paint film, Good film-forming performance

Pending Publication Date: 2022-03-22
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, traditional antifouling coatings such as Wuxi self-polishing antifouling coatings, heavy metal antifouling agents such as cuprous oxide and copper powder are easy to accumulate after being released in seawater, causing deformities in some organisms, and may enter the food chain, becoming a threat to human health and Hidden dangers of ecological security
At the same time, most of these traditional antifouling coatings are solvent-based coatings with VOC content 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 and polluting the environment

Method used

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  • Environment-friendly antifouling paint as well as preparation method and application thereof

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preparation example Construction

[0039] The raw materials for the preparation of the anion-cation polymer antifouling agent include anion-type polymerizable monomers, cationic-type polymerizable monomers, azo initiators and organic solvents.

[0040] The anion-cation polymer modified emulsion will be described in detail below first. In terms of mass percentage, the environment-friendly antifouling paint comprises 25-50% of anion-cation polymer modified emulsion, preferably 32-40%. In the present invention, based on the mass of the anionic and cationic polymer modified emulsion as 100%, the anionic and cationic polymer modified emulsion includes the following mass percentages of preparation raw materials: anionic polymerizable monomer 1-3%, Cationic polymerizable monomer 1-3%, triisopropyl acrylate silicon ester 10-20%, acrylate monomer 25-40%, acrylic acid 0.5-1.5%, emulsifier 1-2%, inorganic peroxide 0.3-0.6% initiator, 0.05-0.1% sodium bicarbonate, 0.3-0.5% pH regulator, and water as the balance; more pref...

Embodiment 1

[0089] Preparation of cationic polymer modified emulsion:

[0090] Weigh 6g of 3-sulfonic acid propyl potassium salt, 6g of 2-(methacryloyloxy)ethyltrimethylammonium chloride, 46g of silicon triisopropylacrylate, 10g of butyl acrylate, 11g of acrylic acid Ethyl ester, 50g methyl methacrylate, 17g isobornyl methacrylate and 2.5g acrylic acid, mix well at 25°C, add 3g non-ionic emulsifier OP-10, 1.5g reactive emulsifier Adico SR- 10 and 110g of deionized water were stirred and emulsified at a speed of 600r / min for 30min to obtain a monomer emulsion;

[0091] Weighing 1.4g ammonium persulfate was dissolved in 20g deionized water to obtain a 6.5% initiator aqueous solution with a mass concentration;

[0092] Take by weighing 0.2g sodium bicarbonate, 20g deionized water, the described monomer emulsion of 75g and the described initiator aqueous solution of 3.2g, stir 0.5h with the speed of 600r / min under room temperature condition, afterwards under stirring condition with 5 The he...

Embodiment 2

[0098] The preparation of anion-cation polymer modified emulsion and anion-cation polymer antifouling agent is the same as that in Example 1.

[0099] Preparation of environmentally friendly antifouling coatings:

[0100] Mix 30g deionized water, 0.21g water-based thickener (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 11g of anionic and cationic polymer antifouling agent, 3.5g of diuron, 3.3g of Zineb and 10.5g of pigments and fillers (2.5g each of talc powder, zinc oxide and mica powder , organic bentonite 3g), disperse at a high speed for 30min under the condition of 800r / min and then grind until the fineness is less than 40μm, add 39.5g of anionic and cationic polymer modified emulsion, 0.4g of ethylene glycol butyl ether and 0.6g of alcohol ester ten 2. Stir and disperse for 30 ...

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Abstract

The invention provides environment-friendly antifouling paint as well as a preparation method and application thereof, and relates to the technical field of paint. The anionic polymerizable monomer, the cationic polymerizable monomer and the triisopropyl silicon acrylate are used as raw materials to prepare the anion-cation polymer modified emulsion, and the anion-cation polymer modified emulsion is used as a film-forming substance to endow the environment-friendly antifouling paint with excellent antifouling activity and good surface self-renewal and self-polishing capabilities; the antifouling period of the coating is obviously prolonged; meanwhile, the anion-cation polymer is used as an antifouling agent to replace a cuprous oxide heavy metal antifouling agent, so that the damage to the marine ecological environment caused by the release of heavy metal ions is effectively avoided. In addition, the environment-friendly antifouling coating provided by the invention is a water-based coating, takes water as a thinner, and is environment-friendly; the environment-friendly antifouling paint provided by the invention is good in film-forming property, strong in mechanical property of a paint film, stable in self-polishing rate, and excellent in water soaking resistance and antifouling property.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an environment-friendly antifouling coating and its preparation method and application. Background technique [0002] Marine biofouling has a relatively large negative impact on the life and service performance of marine equipment, and it is easy to cause problems such as equipment corrosion and aging, and increased energy consumption, which seriously restricts the development of marine industries. Among the many technologies for preventing and controlling marine biofouling, the application of antifouling coatings is the most economical and effective means. However, traditional antifouling coatings such as Wuxi self-polishing antifouling coatings, heavy metal antifouling agents such as cuprous oxide and copper powder are easy to accumulate after being released in seawater, causing deformities in some organisms, and may enter the food chain, becoming a threat to human health and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/12C09D5/16C09D7/20
CPCC09D143/04C09D5/1637C09D7/20C08L33/14
Inventor 周峰裴小维杨武芳吴杨于波于强亮
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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