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Low-superficial area ratio marine antifouling coating of silicofluoride block polymer and its production

A fluorosilicon block, low surface energy technology, used in antifouling/underwater coatings, coatings, biocide-containing paints, etc. Effect of surface energy, improved solvent resistance, high flexibility

Inactive Publication Date: 2007-09-05
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of coating base material contains both silicon and fluorine in its element composition, has very low surface energy, and has good antifouling effect, but the service time is still difficult to meet the industrial requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) Mix 0.3 part of methyl silicone oil and 0.6 part of di-n-octyl phthalate at 25°C to prepare a coating additive;

[0021] 2) Mix 10 parts of ternary fluorosilicon block copolymer and 2 parts of benzidine yellow at 25°C to prepare a coating additive; mix 10 parts of ternary fluorosilicon block copolymer with 2 parts of benzidine yellow at 25 °C and mix uniformly to prepare a mixture of base material and pigment;

[0022] 3) Add the coating additive obtained in step 1) dropwise to the mixture of coating base material and pigment obtained in step 2) and mix and stir for 1 hour. During the mixing process, the temperature of the mixture is kept at 25° C., and the stirring speed is controlled at 400 rpm / min. The mixture is ready for use;

[0023] 4) The mixture obtained in step 3) was dissolved in 4 parts of butyl acetate solvent to prepare a mixture, and then stirred at 25° C. for 1 hour, and the stirring speed was controlled at 400 rpm / min;

[0024] 5) After the mixture...

Embodiment 2

[0026] 1) Mix 0.4 part of methyl silicone oil and 0.7 part of di-n-octyl phthalate at 27°C to prepare a coating additive;

[0027] 2) Mix 10 parts of ternary fluorosilicone block copolymer and 2.5 parts of benzidine yellow at 27°C to prepare a mixture of paint base material and pigment;

[0028] 3) Add the coating additive obtained in step 1) dropwise to the mixture of coating base material and pigment obtained in step 2) and mix and stir for 1.5 hours. The temperature during the mixing process is kept at 27°C, and the stirring speed is controlled at 500rpm / min. The mixture is ready for use;

[0029] 4) The mixture obtained in step 3) was dissolved in 5 parts of butyl acetate solvent to prepare a mixture, and then stirred at 27° C. for 1 hour, and the stirring speed was controlled at 500 rpm / min;

[0030] 5) After the mixture obtained in step 4) was allowed to stand for 5 hours, the novel marine antifouling paint involved in the present invention was obtained.

Embodiment 3

[0032] 1) Mix 0.55 parts of methyl silicone oil and 0.55 parts of di-n-octyl phthalate at 29°C to prepare a coating additive;

[0033] 2) Mix 10 parts of ternary fluorosilicone block copolymer and 3 parts of benzidine yellow at 29°C to prepare a mixture of paint base material and pigment;

[0034] 3) Add the coating additive obtained in step 1) dropwise to the mixture of coating base material and pigment obtained in step 2) and mix and stir for 1 hour. During the mixing process, the temperature of the mixture is kept at 29° C., and the stirring speed is controlled at 400 rpm / min. The mixture is ready for use;

[0035] 4) The mixture obtained in step 3) was dissolved in 4 parts of butyl acetate solvent to prepare a mixture, and then stirred at 29° C. for 1.5 h, and the stirring speed was controlled at 500 rpm / min;

[0036] 5) After the mixture obtained in step 4) was allowed to stand for 4.5 hours, the novel marine antifouling paint involved in the present invention was obtain...

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Abstract

A fluosilicate block polymer low-surface energy marine anti-fouling coating and its production are disclosed. The coating consists of base material polydimethyl siloxane-b-polymethylmethacrylate-b-polyfluobutyl metacrylic acid ester ternary fluosilicate block copolymer, accessory methyl silicone oil and di-n-octyl ester phthalate and coating solvent butyrin acetate. The process is carried out by mixing methyl silicone oil with di-n-octyl ester phthalate to obtain coating accessory, mixing polydimethyl siloxane-b-polymethylmethacrylate-b-polyfluobutyl metacrylic acid ester ternary fluosilicate block copolymer with pigment to obtain coating base material and pigment mixture, adding coating accessory into mixture of coating base material and pigment, mixing, dissolving it into butyrin acetate and laying aside. It has excellent anti-fouling effect and no environmental pollution.

Description

technical field [0001] The present invention relates to a marine antifouling coating, in particular to a marine antifouling coating with extremely low surface energy prepared by using a fluorosilicone block polymer as a coating base material and compounding it with other components. its preparation method. Background technique [0002] Ships and marine equipment will face the challenge of marine biofouling, and the losses caused by biofouling caused by numerous types and quantities of marine organisms are difficult to estimate. In order to reduce or even eliminate the biofouling of marine equipment, it is common practice to apply marine antifouling coatings on marine equipment. [0003] So far, the existing marine antifouling coatings can be divided into two categories according to whether they contain toxic agents and the antifouling mechanism: traditional marine antifouling coatings and environment-friendly marine antifouling coatings. The former releases the poison in t...

Claims

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Application Information

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IPC IPC(8): C09D183/10C09D5/16
Inventor 罗正鸿何腾云洪顺利
Owner XIAMEN UNIV
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