Non-toxic marine ship antifouling coating material and preparation method thereof
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A technology for antifouling coatings and ships, applied in the field of coatings, can solve problems such as insufficient durability and physical and chemical properties, and achieve the effects of enhancing strength and elastic modulus, increasing cost, and improving solubility
Active Publication Date: 2020-10-20
HUADIAN ELECTRIC POWER SCI INST CO LTD
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Based on this principle, alkali silicate non-toxic antifouling coatings have been devel
Method used
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[0046] The present invention also provides a preparation method of the above-mentioned non-toxic marine ship antifouling coating, comprising the following steps:
[0047] A) Mix and stir fly ash nanoparticles and coupling agent at high speed, after the temperature rises to 50-70°C, add chitosan quaternary ammonium salt and continue mixing and stirring to obtain fly ash nano particles loaded with chitosan quaternary ammonium salt particle;
[0048] B) adding the fly ash nanoparticles loaded with chitosan quaternary ammonium salt into the silicone resin, and then adding a defoamer, a leveling agent, a catalyst and a curing agent for mixing and stirring to obtain a non-toxic marine antifouling coating.
[0049] In the invention, firstly, the fly ash nano particles and the coupling agent are mixed and stirred at high speed, the stirring speed is 2000-2500 rpm, and the stirring time is 3-5 minutes.
[0050] In the present invention, fly ash nanoparticles are mixed with organosilic...
Embodiment 1～3
[0063] 1. Formula (see Table 1 and Table 2)
[0064] Types of raw materials in the formula of table 1
[0065]
[0066] Raw material consumption in the formula of table 2
[0067]
[0068] 2. Preparation method
[0069] 1. Mix the fly ash nanoparticles and the coupling agent in a high-speed mixer for 3 to 5 minutes (rotation speed is about 2000 to 2500 rpm), and add chitosan quaternary ammonium salt after the temperature rises to 50°C and continue to stir for 30 to 40 minutes , loading quaternary ammonium salts on the surface of fly ash nanoparticles.
[0070] 2. According to the ratio in the formula, add the fly ash nanoparticles loaded with antibacterial agent into the PDMS resin, stir and mix the two at a speed of 50-200rpm for 5 minutes, and then add defoamer, leveling agent, catalyst and curing agent while stirring , continue to stir for 5 minutes, and finally vacuumize for 1 to 2 minutes.
[0071] 3. Quickly take out the above-mentioned mixed colloid, pour film...
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Abstract
The invention provides a non-toxic marine ship antifouling coating material, which is prepared from the following raw materials in parts by mass: 100 parts of organic silicon resin, 1 to 3 parts of achitosan quaternary ammonium salt, 5 to 10 parts of fly ash nanoparticles, 0.5 to 1 part of a coupling agent, 3-5 parts of a curing agent, 0.01 to 0.1 part of a catalyst, 0.2 to 0.5 part of an antifoaming agent, and 0.2 to 0.5 part of a leveling agent. According to the invention, organic silicon resin is used as a matrix, nano fly ash is used as a carrier, and a chitosan quaternary ammonium salt loaded on the surface is used as a main antifouling agent, wherein the chitosan quaternary ammonium salt has good solubility and antibacterial property, has biocompatibility, and is safe and non-toxic,the fly ash nanoparticles have strong alkalinity, and the organic silicon is also a low surface energy material; by using a hydrophilic chitosan quaternary ammonium salt as a main antibacterial material, so that the use of a large amount of organic solvents is avoided, the cost is low, and less waste liquid is generated; and fly ash nanoparticles are activated to promote the self-polymerization of organic silicon resin molecules to form a layered structure with certain orientation so as to enhance the strength and elastic modulus of the coating material.
Description
technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a non-toxic marine ship antifouling coating and a preparation method thereof. Background technique [0002] Ships are extremely vulnerable to the attachment of marine organisms (microorganisms, algae, shellfish, etc.) during ocean travel, which brings many hazards to the normal operation of the ship: 1) Marine organisms will block the pumping and drainage pipes and other facilities, affecting the hull The system is in normal use; 2) The metabolites of marine organisms contain corrosive substances such as organic acids, which corrode the bottom surface of the ship and underwater equipment, increasing maintenance costs and shortening its service life; 3) Marine organisms attaching to the bottom of the ship also increases the surface roughness of the hull speed, greatly increasing navigation resistance and fuel consumption. In order to solve the problems caused by mari...
Claims
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