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Anti-fouling and corrosion-resistant coating composition and application thereof on ships or structures in water

A technology of anti-corrosion coatings and compositions, applied in anti-corrosion coatings, anti-fouling/underwater coatings, polyamide coatings, etc., can solve problems such as poor adhesion and durability, and achieve good durability and anti-fouling corrosion Protective performance, the effect of excellent corrosion protection performance

Inactive Publication Date: 2013-10-16
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adhesion between the coating film and the base material is poor, and there is a problem in the durability of the part in contact with water in particular.

Method used

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  • Anti-fouling and corrosion-resistant coating composition and application thereof on ships or structures in water
  • Anti-fouling and corrosion-resistant coating composition and application thereof on ships or structures in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] An antifouling and anticorrosion coating composition is composed of component A and component B, wherein the mass ratio of component A and component B is 5:1; wherein, component A is composed of 22wt% gamma-ureidopropyl Trimethoxysilane, 18wt% polytetrafluoroethylene, 3wt% urea-formaldehyde resin emulsion, 5wt% zinc oxide, 8wt% methacrylic resin, 2wt% liquid paraffin, 5wt% methyl isobutyl ketone, 8wt% methyl carbonate and the rest of ethanol; component B consists of 35wt% polyamide, 55wt% N-trimethylsilylimidazole, 8wt% ethyl orthosilicate and 2wt% dibutyl dilaurate Acid tin composition.

[0020] The preparation method of described coating is as follows:

[0021] (1) Grind PTFE, urea-formaldehyde resin emulsion, zinc oxide, methacrylic resin, methyl isobutyl ketone, methyl carbonate and ethanol in a ball mill for 0.5-1h; (2) Grind liquid paraffin and urea The silane is mixed evenly; (3) Mix the materials in step (1) and step (2) fully to obtain component A; (4) Polyam...

Embodiment 2-5 and comparative example 1-3

[0023] According to the composition and proportion in Table 1, the same operation as in Example 1 was carried out to obtain the antifouling and anticorrosion coating films described in Examples 2-5 and Comparative Examples 1-3.

[0024] Evaluation method

[0025] The steel plate with anti-fouling and anti-corrosion coating formed by Examples 1-5 and Comparative Examples 1-3 is placed in a bamboo cage, immersed in seawater with a water depth of 1m, placed for 6 months and 12 months, and evaluated. Stain resistance, corrosion resistance and adhesion. The evaluation results are shown in Table 2.

[0026] Antifouling

[0027] Check with the naked eye for visible marine organisms. Y: no attachment, F: attachment.

[0028] Corrosion resistance

[0029] Visually observe whether there are blisters on the surface of the steel plate with anti-fouling and anti-corrosion coating after immersion for 6 months and 12 months.

[0030] Y: No abnormality, F: Blistering occurred.

[0031]...

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Abstract

The invention relates to an anti-fouling and corrosion-resistant coating composition, which is composed of a component A and a component B, wherein the mass ratio of the component A to the component B is 5:1. The component A comprises following components: carbamido silane, polytetrafluoroethylene, urea formaldehyde resin emulsion, zinc oxide, methacrylic resin, liquid paraffin, methyl isobutyl ketone, dimethyl carbonate, and the rest is ethanol. The component B is composed of polyamide, imidazole silane, ethyl orthosilicate, and dibutyltin dilaurate. The anti-fouling and corrosion-resistant coating composition not only has the advantages of no toxicity, no pollution to environment, and good performances of marine organism adherence resistance and sea water corrosion resistance, but also has excellent adhesive force on the substrates of iron, woods and cement, and can directly be used as a substrate coating.

Description

technical field [0001] The invention belongs to the technical field of antifouling and anticorrosion of ships and structures in seawater, more specifically, the invention relates to an antifouling and anticorrosion coating composition and its application in ships or structures in water. Background technique [0002] Marine organisms adhere to and grow on parts of underwater structures, ships, etc. that are in contact with water, causing various damages. Therefore, it is necessary to apply an anti-fouling and anti-corrosion coating film on the surface of the base material of the ship or underwater structure to prevent the adhesion of marine organisms. In order to solve the problem of marine organisms attaching, a low surface energy antifouling coating is provided in the prior art, and the coating is mainly used for surface anticorrosion treatment of marine ships and facilities in the sea. The coating has non-toxic, non-toxic The characteristics of pollution environment, anti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/18C09D161/24C09D133/02C09D177/00C09D5/08C09D5/16C09D7/12
Inventor 尚金瑞
Owner OCEAN UNIV OF CHINA
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