A kind of fluorescent low surface energy marine antifouling coating and preparation method thereof

A low surface energy, marine antifouling technology, applied in antifouling/underwater coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of inability to achieve coating and application effects, small adhesion, etc., to achieve Long-term antibacterial and antifouling effects, high adhesion, and excellent bonding strength

Active Publication Date: 2021-02-02
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the low adhesion between the low surface energy antifouling coating and its contact interface, the low surface energy antifouling coating and its coated substrate often cannot achieve good coating and application effects.

Method used

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  • A kind of fluorescent low surface energy marine antifouling coating and preparation method thereof
  • A kind of fluorescent low surface energy marine antifouling coating and preparation method thereof

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preparation example Construction

[0031] A preparation method of fluorescent low surface energy marine antifouling paint and coating, comprising the following steps:

[0032] Step 1: Preparation of a silicon-containing polyurethane resin solution terminated by a silane coupling agent

[0033] (1) Take polytetrahydrofuran ether diol and polysiloxane containing hydroxyl or hydroxypropyl group as the polyurethane soft segment, and the molar ratio of polytetrahydrofuran ether diol to polytetrahydrofuran ether diol is 5:1 to 1:1, the latter according to 20 parts by weight; after mixing evenly, blend with isophorone diisocyanate as polyurethane hard segment, control the usage amount of polyurethane soft segment and polyurethane hard segment, make NCO:OH=1.3:1~1.5 in the blend : 1; then add the catalyzer that accounts for 0.2% of polyurethane soft segment weight, and with enough xylene as solvent, react at 85 ℃ for 2 hours;

[0034]The polyurethane hard segment is one or more of isophorone isocyanate, toluene diisoc...

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Abstract

The invention relates to marine antifouling paint technology, and aims to provide a fluorescent low surface energy marine antifouling paint and a preparation method thereof. The paint comprises a silicon-containing polyurethane resin solution terminated by a silane coupling agent, pigments and fillers, and a diluent. The silicon-containing polyurethane resin solution refers to a mixture of the silicon-containing polyurethane resin and the diluent. The invention is applicable to the technical field of marine antifouling coatings. The antifouling coating can be directly coated on the epoxy base material without additionally adding a connecting coating or an adhesive coating to achieve good adhesion performance, and overcomes the The problem of poor adhesion of polysiloxane low surface energy antifouling topcoats to substrates such as epoxy primers. It has excellent bonding strength and high adhesion with the substrates involved in marine engineering equipment, and can be applied to various ships, marine engineering equipment and structural facilities, marine ranch breeding nets, etc. It can reduce the surface energy of the surface of the substrate, is not easy to attach aquatic organisms, and can exert a long-term antifouling effect.

Description

technical field [0001] The invention relates to marine antifouling paint technology, discloses a fluorescent low surface energy marine antifouling paint, in particular relates to a low surface energy topcoat paint that does not require a link coat or a tie coat. The coating comprises a fluorescence-responsive coumarin-based silane coupling agent-terminated silicon-containing polyurethane resin. The invention also relates to a preparation method and a coating method of the antifouling paint. Background technique [0002] my country's land coastline is more than 18,000 kilometers long, and the ocean environment is complex and changeable from north to south. When a ship sails in the ocean environment, the hull part is easily fouled by marine organisms due to long-term immersion in seawater. According to statistics, 4,000-5,000 species of marine fouling organisms have been discovered in the world, and as many as 650 species have been recorded along the coast of China. There a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/08C09D5/16C09D5/14C08G18/66C08G18/48C08G18/61C08G18/28
CPCC08G18/2865C08G18/4854C08G18/61C08G18/6666C08K2003/2241C09D5/14C09D5/1662C09D175/08C08K3/22
Inventor 张庆华郭鸿宇詹晓力陈丰秋程党国
Owner ZHEJIANG UNIV
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