Fluorescent low-surface-energy marine antifouling paint and preparation method thereof

A low surface energy, marine antifouling technology, applied in antifouling/underwater coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as low adhesion, inability to achieve coating and application effects, and achieve High adhesion, long-term antibacterial and antifouling effect, long-term antifouling effect

Active Publication Date: 2020-07-10
ZHEJIANG UNIV
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  • Abstract
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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

Method used

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  • Fluorescent low-surface-energy marine antifouling paint and preparation method thereof
  • Fluorescent low-surface-energy marine antifouling paint 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 a marine antifouling coating technology, and aims to provide a fluorescent low-surface-energy marine antifouling coating and a preparation method thereof. The coating comprises a silane coupling agent-terminated silicon-containing polyurethane resin solution, a pigment filler and a diluent, wherein the silicon-containing polyurethane resin solution is a mixture of silicon-containing polyurethane resin and the diluent. The invention is applicable to the technical field of marine antifouling paint, the antifouling coating can be directly coated on an epoxy substrate, good adhesion performance can be achieved without additionally adding a connecting coating or an adhesive coating, and the problem of poor adhesion of a polysiloxane-containing low-surface-energy antifouling finish paint coating on substrates such as epoxy primer and the like is solved. The coating has excellent bonding strength and high adhesive force with a base material related to maritime work equipment and can be applied to various ships, ocean engineering equipment and structural facilities, marine ranching breeding nets and the like. The surface energy of the surface of the base material can be reduced, aquatic organisms are not easily attached and a long-acting antifouling effect can be achieved.

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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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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