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Antifouling coating material and preparation method thereof

An anti-fouling coating and initiator technology, applied in the field of materials, can solve the problems of algae and fish threats, toxicity, etc., and achieve the effects of inhibiting adhesion, enhancing anti-fouling performance, and enhancing surface wetting resistance

Active Publication Date: 2014-12-03
HAINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the coating of this type of antifouling agent has a good antifouling effect and has an obvious inhibitory effect on common marine fouling organisms, the copper ions formed after the main component of the cuprous oxide dissolves easily in the ocean. Bioaccumulation, with certain toxicity, will pose a threat to algae and fish and be gradually eliminated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] The invention provides a method for preparing an antifouling coating material, comprising:

[0023] A) thermoplastic styrene-butadiene block copolymer, dodecafluoroheptyl methacrylate and initiator are mixed and reacted to obtain a reaction product;

[0024] B) mixing the reaction product with mesoporous molecular sieves to obtain an antifouling coating material.

[0025] In the invention, firstly, the thermoplastic styrene-butadiene block copolymer is dissolved in a solvent, mixed with dodecafluoroheptyl methacrylate (DFHMA) and an initiator, and reacted to obtain a reaction product; the reaction product is settled with a sedimentation agent. The steps A1) and A2) preferably further include: adding the reaction product to an initiator to continue the reaction.

[0026] The present invention first dissolves the thermoplastic styrene-butadiene block copolymer with a solvent, mixes it with dodecafluoroheptyl methacrylate and an initiator, and reacts to obtain a reaction ...

Embodiment 1

[0045] Add 2g of P123 to the mixture of 2mol / L 60g of HCl and 15g of distilled water, stir magnetically at room temperature until P123 is completely dissolved and the solution is clear and transparent, then add 4.25g of TEOS dropwise to the above solution under strong stirring, and continue at room temperature Stir for 20 h, transfer the reaction mixture to a polytetrafluoroethylene-lined hydrothermal kettle, place it at 100°C for aging for 24 h, cool at room temperature, filter with suction, wash with deionized water, and dry to a white solid. The solid was transferred to a resistance furnace, and the temperature was programmed to rise (2°C / min) to 550°C for 5 hours to obtain 1.06g of SBA-15 powder sieve.

Embodiment 2

[0051] Add 1g of SBS (number-average molecular weight: 100,000) into 10g of tetrahydrofuran, stir magnetically for 0.5h to dissolve, add 1g of DFHMA and 0.015g of azobisisobutyronitrile, stir magnetically at 65°C, turn off the heat source after reacting for 5 hours, and then add Add 0.005 g of azobisisobutyronitrile and react at room temperature for 24 hours. After the reaction was finished, the reactants were settled with 15 g of ethanol, and the dissolution and sedimentation were repeated twice to remove residual initiators and reaction by-products. The product was dried in a vacuum oven at 50°C until constant weight, and stored for later use.

[0052] Dissolve 1 g of the above-prepared fluorinated copolymer into 10 g of tetrahydrofuran, dissolve it under magnetic stirring, add 0.1 g of SBA-15 molecular sieve prepared in Example 1 of the present invention, and stir thoroughly. Apply it evenly on a clean tinplate sheet with a thickness of 60 μm, and dry at 60°C for 3 hours t...

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Abstract

The invention provides an antifouling coating material and a preparation method thereof. The preparation method comprises the following steps: (A) mixing a thermoplastic butylbenzene segmented copolymer, dodecafluoroheptyl methacrylate and an initiator, and reacting so as to obtain a reaction product; and (B) mixing the reaction product with a mesoporous molecular sieve, thereby obtaining the antifouling coating material. As the thermoplastic butylbenzene segmented copolymer, the dodecafluoroheptyl methacrylate and the initiator are mixed and reacted to obtain a fluorinated copolymer, due to addition of a dodecafluoroheptyl methacrylate fluorine-containing monomer, the surface property of a copolymer coating is effectively degraded, so that the coating has certain anti-wettability, can prevent the surface of the coating from being moistened by microorganism secretion mucus, thereby inhibiting adhesion of microorganisms. As the fluorinated copolymer is mixed with the mesoporous molecular sieve, special micro-nano morphology is formed on the surface of the coating because of the dopant; because of the morphology, the surface anti-wettability of the polymer coating is further improved, and the antifouling effect on the fluorine-containing coating is well improved.

Description

technical field [0001] The invention relates to the field of material technology, in particular to an antifouling coating material and a preparation method thereof. Background technique [0002] With the continuous development of the marine transportation industry, the impact of marine biofouling on marine vessels and underwater structures of offshore platforms has become increasingly prominent. The existence of marine biofouling increases the resistance of the ship and increases the fuel consumption; in addition, the adhesion of fouling and its biological secretions will not only accelerate the corrosion of the hull, but also affect the performance of underwater detection equipment, seriously affecting industry development. Therefore, marine antifouling coatings are one of the most important varieties of marine coatings, and its selection is particularly important. [0003] In the prior art, antifouling coatings using cuprous oxide as an antifouling agent dominate the mar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/00C09D5/16C09D7/12C08F287/00C08F220/22
Inventor 李江汪国庆丁春华姜宏
Owner HAINAN UNIVERSITY
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