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Nano-montmorillonite modified acrylic silicon/boron copper-free self-polishing type anti-fouling coating and preparation method thereof

A technology of nano-montmorillonite and non-toxic acrylic, which is applied in the direction of antifouling/underwater coatings, coatings, paints containing biocides, etc., can solve the problems of non-performing tin-free self-polishing antifouling coatings, etc., and achieve antifouling performance The effect of stability, good compatibility and excellent mechanical properties

Pending Publication Date: 2018-12-11
中国人民解放军92228部队
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanism of tin-free self-polishing antifouling coatings is basically the same as that of tin-based self-polishing antifouling coatings. It ensures the smooth exudation of antifouling agents through the hydrolysis or ion exchange of acrylic polymers in seawater, thereby achieving antifouling effects. There is no tin-free self-polishing antifouling coating with good performance on the market

Method used

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  • Nano-montmorillonite modified acrylic silicon/boron copper-free self-polishing type anti-fouling coating and preparation method thereof
  • Nano-montmorillonite modified acrylic silicon/boron copper-free self-polishing type anti-fouling coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A two-component solvent of 80 parts of xylene (Xylene) and 20 parts of absolute ethanol was added to a 500 mL four-neck round bottom flask, heated to 95-100° C., and condensed to reflux. Strong mechanical stirring. 1.5 parts each of azobisisobutyronitrile (AIBN) and azobisisoheptanonitrile (ABVN) and 30 parts of triisopropylsilane acrylate, 15 parts of methacrylic acid (MAA), 10 parts of methyl methacrylate (MMA), 15 parts of butyl acrylate (BA) to form a mixed solution, and then gradually add it dropwise into the reaction system under the protection of nitrogen. Acyl (BPO) in xylene. Finally, the reaction was continued for 1.5 hours to obtain an acrylic silicone resin (abbreviated as AASP, the same below).

[0038] Add 112 parts of xylene and 78 parts of acetone mixed solvent into a four-necked bottle, add 20 parts of pyridine triphenylborane, mix well, add 145 parts of acrylic silicone resin (AASP) prepared in the previous step, and react for 10 hours under the same...

Embodiment 2

[0040] A two-component solvent of 80 parts of xylene (Xylene) and 20 parts of n-butanol (BuOH) was added into a 500 mL four-neck round bottom flask, heated to 95-100 °C, and condensed to reflux. Strong mechanical stirring. 1.8 parts of azobisisobutyronitrile (AIBN) and 4.2 parts of azobisisovaleronitrile (AMBN) and 30 parts of methacryloxyamidotrimethylsilane, 10 parts of methacrylic acid (MAA), 15 parts Methyl methacrylate (MMA) and 25 parts of butyl acrylate (BA) were prepared as a mixed solution, and then gradually added dropwise to the reaction system under the protection of nitrogen for about 3 hours, and then continued to react for 2 hours, and then added 1.5 A solution of benzoyl peroxide (BPO) in xylene. Finally, the reaction was continued for 1.5h to obtain acrylic silicone resin (AASP).

[0041]Add 100 parts of xylene and 80 parts of tetrahydrofuran mixed solvent into a four-necked bottle, add 30 parts of triphenylboronoctadecylamine, mix well, add 150 parts of acr...

Embodiment 3

[0043] Weigh a certain amount of sodium-based montmorillonite and disperse it in water under high-speed stirring, raise the temperature to 80-100°C, add the intercalation agent dodecyldimethylphenylammonium bromide under strong stirring, and stir vigorously for a period of time After that, stir at a low speed and react for a period of time; filter with suction, wash the obtained white precipitate with deionized water until no bromide ions exist, put the obtained white precipitate in an oven and dry it at 60-80°C , ground, sieved, and set aside to obtain the modified nanometer montmorillonite with anti-algae property.

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Abstract

The invention discloses a nano-montmorillonite modified acrylic silicon / boron copper-free self-polishing type anti-fouling coating and a preparation method thereof. The preparation method thereof comprises the steps that the following components: 30-60 parts of acrylic silicon / boron self-polishing resin, 0.5-3.5 parts of modified nano-montmorillonite, 0.5-3.5 parts of chlorinated paraffin, 1-4 parts of an anti-settling agent, 1-10 parts of an organic antifouling agent, 18-50 parts of pigments and fillers and 14-26 parts of a solvent are weighed in parts by weight; glass beads are added into the raw materials, and the glass beads and the raw materials are uniformly mixed by using a glass rod; and the raw materials which are uniformly mixed are stirred and ground by using a high-speed dispersion machine so as to obtain the anti-fouling coating. The coating has the advantages of being low in toxicity, environmentally friendly and also has the excellent performances of relatively stable and durable hydrolysis and stable antifouling effect.

Description

technical field [0001] The invention belongs to the technical field of marine antifouling, in particular to a nano-montmorillonite modified acrylic silicon / boron copper-free self-polishing antifouling paint and a preparation method thereof. Background technique [0002] With the development of the blue economy strategy, the marine industry continues to grow, and the harm caused by marine biofouling to ships and underwater facilities has attracted more and more attention. On the one hand, marine biofouling will increase the navigation resistance of ships, resulting in reduced speed and increased fuel consumption; on the other hand, it will accelerate metal corrosion and shorten the service life of ships and marine facilities. Among the methods to solve marine biofouling, the use of antifouling coatings is the most extensive and effective measure. [0003] There are many kinds of marine antifouling coatings, which can be divided into two categories according to whether they c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D143/04C09D7/62C09D5/16
CPCC08K2003/2241C08K2003/2296C08K2003/3045C08K2201/011C09D5/1687C09D143/04C08L91/06C08L71/02C08K9/04C08K3/346C08K3/30C08K3/34C08K3/22
Inventor 曹京宜张寒露陈蓉蓉杨延格王君张海永李亮刘连河
Owner 中国人民解放军92228部队
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