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Humidity-sensitive intelligent betaine fluorinated antifouling paint and preparation method thereof

A technology of humidity sensing and antifouling paint, applied in the field of paint, can solve the problem that the effect of underwater paint is not very ideal, etc.

Active Publication Date: 2012-09-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, although fluorine-containing acrylate compounds have good antifouling function as airborne coatings, they are not very effective as underwater coatings.

Method used

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  • Humidity-sensitive intelligent betaine fluorinated antifouling paint and preparation method thereof
  • Humidity-sensitive intelligent betaine fluorinated antifouling paint and preparation method thereof
  • Humidity-sensitive intelligent betaine fluorinated antifouling paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0035] Example 1 Add 44 parts of water (parts by weight, the same below) and 0.7 parts of tributyl phosphate as an antifoaming agent into a 500mL beaker, and stir until fully mixed. Then gradually add 100 parts of the above-mentioned betaine fluorine-containing copolymer emulsion, and mix evenly with the offset paper. Finally, add 3 parts of sodium hexametaphosphate as a dispersant and 15 parts of talcum powder as a filler, and stir at high speed for 20 to 30 minutes until homogeneous.

[0036] The betaine-based fluorine-containing paint was coated on the surface of a glass slide, and its performance was measured after drying.

[0037] After 3 weeks of testing, in the environment with the same fouling organisms, the number of fouling organisms on the surface of the betaine-based fluorine-containing coating was significantly less than that on the blank glass (the area was reduced by 95% and thinner fouling biolayer). This fully demonstrates that the betaine-based fluorine-c...

example 2

[0038] Example 2 Add 60 parts of water (parts by weight, the same below) and 0.9 parts of tributyl phosphate as an antifoaming agent into a 500 mL beaker, and stir until fully mixed. Gradually add 100 parts of betaine fluorine-containing copolymer emulsion, and mix evenly with offset paper. Finally, add 6 parts of sodium hexametaphosphate as a dispersant and 20 parts of talcum powder as a filler, and stir at high speed for 20 to 30 minutes until homogeneous.

[0039] The betaine-based fluorine-containing paint was coated on the surface of a glass slide, and its performance was measured after drying.

[0040] After 3 weeks of testing, in the environment with the same fouling organisms, the number of fouling organisms on the surface of the betaine-based fluorine-containing coating was significantly less than that on the blank glass (the area of ​​the fouling organisms was less more than 95% and the fouling biological layer is thinner). This fully demonstrates that the betaine-...

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Abstract

The invention relates to humidity-sensitive intelligent betaine fluorinated antifouling paint and a preparation method thereof. The paint is mainly made of, by weight, 10%-60% of betaine fluorinated copolymer, 60%-10% of inorganic salt filler, 0.1%-0.5% of water-based paint antifoaming agent, 0.1%-5.0% of dispersing agent and 20%-50% of water. The preparation method includes: firstly, uniformly mixing the betaine fluorinated copolymer solution, the antifoaming agent, the dispersing agent and the water, and secondly, adding the inorganic salt filler while stirring to obtain the humidity-sensitive intelligent betaine fluorinated antifouling paint. The characteristic of foul resistance of fluorinated groups in air and the characteristic of foul resistance of betaine groups in water are integrated to prepare the humidity-sensitive intelligent antifouling paint, and distribution of the fluorinated groups and the betaine groups in coatings can be adjusted according to variation of external media, so that better antifouling function can be kept constantly.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a humidity-sensing betaine-based fluorine-containing intelligent antifouling coating and a preparation method thereof. Background technique [0002] Marine fouling is a general term for animals, plants and microorganisms that grow on the surface of ships and all facilities in the ocean for a long time. The biofouling caused by it has brought huge economic losses to ship maintenance. When marine organisms attach to the bottom of the ship, a series of complex physical and chemical changes will occur with the growth of these fouling organisms, which will greatly accelerate the corrosion of the bottom steel plate and reduce the service life of the equipment. At the same time, fouling organisms will increase the weight and navigation resistance of the ship, thereby increasing fuel consumption and seriously affecting the completion of missions of aerospace survey ships. It is difficu...

Claims

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Application Information

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IPC IPC(8): C09D133/10C09D7/12C09D5/16C08F220/18C08F220/22C08F220/38C08F220/36
Inventor 徐守萍蒋少鸿蔡智奇文秀芳皮丕辉程江
Owner SOUTH CHINA UNIV OF TECH
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