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Anticorrosion and antifouling integrated self-repairing microcapsule and preparation method thereof

A technology of self-healing microcapsules and microcapsules, applied in the direction of microcapsule preparation, microsphere preparation, anti-corrosion coatings, etc., can solve the problems of low anti-biofouling performance, achieve enhanced anti-fouling performance, convenient test conditions, and prolong Effect of anti-corrosion and anti-fouling ability and anti-corrosion and anti-fouling life

Inactive Publication Date: 2020-11-13
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of organic coating microcrack repair and low anti-biofouling performance in the prior art, and seek to design a kind of anti-corrosion and anti-fouling integrated self-repairing microcapsules with core-shell structure and its preparation method. While repairing micro-cracks in the coating, it releases bio-antifouling agent to enhance the anti-biofouling performance of the coating

Method used

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  • Anticorrosion and antifouling integrated self-repairing microcapsule and preparation method thereof
  • Anticorrosion and antifouling integrated self-repairing microcapsule and preparation method thereof
  • Anticorrosion and antifouling integrated self-repairing microcapsule and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The anti-corrosion and anti-fouling integrated self-healing microcapsule preparation method involved in this example uses emulsion polymerization to prepare two-component microcapsules. The capsule core is tung oil (T) and non-toxic phenolic antifouling agent (F), and the capsule wall is urea-formaldehyde Resin, the specific process is: take 260mL of ultra-pure water, add 2g of emulsifier OP-10, use a stirring disperser to stir until completely dissolved, then add 5g of urea, 0.5g of ammonium chloride and 0.5g of resorcinol in sequence, dissolve Finally, adjust the pH value to 3.0 with a mass percentage concentration of 1% hydrochloric acid aqueous solution for acidification, then add 3g of T and F (the mass ratio of T and F is 5:1), stir and emulsify until the oil is completely emulsified , heated to 60°C, and 13.67g of formaldehyde solution was added dropwise. At a temperature of 60°C and a rotation speed of 800rpm / min, urea and formaldehyde underwent polycondensation ...

Embodiment 2

[0027] The anti-corrosion and anti-fouling integrated self-healing microcapsule preparation method involved in this example uses emulsion polymerization to prepare two-component microcapsules. The capsule core is tung oil (T) and non-toxic phenolic antifouling agent (F), and the capsule wall is urea-formaldehyde Resin, the specific process is: take 1000mL ultrapure water, add 8g of emulsifier OP-10, use a stirring disperser to stir until it is completely dissolved, then add 20g of urea, 2g of ammonium chloride and 2g of resorcinol in sequence, after dissolution, Adjust the pH value to 2.5 with a mass percent concentration of 1% hydrochloric acid aqueous solution for acidification, then add 20g of T and F (the mass ratio of T and F is 5:1), stir and emulsify until the oil is completely emulsified, heat To 60°C, add 50g of formaldehyde solution drop by drop, under the conditions of temperature of 60°C and rotation speed of 1000rpm / min, fully react for 2h, after the reaction is co...

Embodiment 3

[0029] The anti-corrosion and anti-fouling integrated self-healing microcapsule preparation method involved in this example uses the emulsion polymerization method to prepare two-component microcapsules. The capsule core is tung oil (T) and tin-free self-polishing antifouling paint (F), and the capsule wall is urea-formaldehyde resin. , the specific process is as follows: take 1000mL ultrapure water, add 10g emulsifier OP-10, stir until completely dissolved with a stirring disperser, then add 20g urea, 2g ammonium chloride and 2g resorcinol in sequence, after dissolving, use The mass percent concentration is 1% hydrochloric acid aqueous solution, adjust the pH value to 3.0 for acidification, then add 40g of T and F (the mass ratio of T and F is 4:1), stir and emulsify until the oil is completely emulsified, and heat to 60°C, add 50g of formaldehyde solution drop by drop, under the condition of temperature of 60°C and rotation speed of 1000rpm / min, fully react for 2h, after the ...

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Abstract

The invention belongs to the technical field of marine corrosion and protection. The invention relates to an anticorrosion and antifouling integrated self-repairing microcapsule and a preparation method thereof. An anticorrosive coating self-repairing agent and a biological antifouling agent are used as a two-component capsule core; urea-formaldehyde resin obtained by condensation polymerization of urea and formaldehyde is used as a capsule wall; dispersants such as emulsifiers are added, the core material is uniformly dispersed into ultrapure water to form a stable oil-in-water microemulsion;then, the urea and the formaldehyde are subjected to condensation polymerization to coat the microemulsion; thus, the anticorrosion and antifouling integrated self-repairing microcapsule with uniformparticle size and a core-shell structure is prepared. The anticorrosion and antifouling capability and the anticorrosion and antifouling service life of the organic coating can be prolonged; the operation stability of marine equipment and ships is improved, particularly, long-period corrosion protection and fouling protection can be provided for large equipment and metal structures operating in ahigh-temperature, high-salt, high-humidity and high-radiation tropical marine environment, and very high social and economic values are achieved.

Description

Technical field: [0001] The invention belongs to the technical field of marine corrosion and protection, and specifically relates to an anti-corrosion and anti-fouling integrated self-repairing microcapsule and a preparation method thereof. In marine environments, especially tropical marine environments with high temperature, high salt and high radiation, metal structures Or equipment for long-term anti-corrosion and anti-fouling. Background technique: [0002] In the field of corrosion protection, organic coatings can effectively isolate the metal substrate from the corrosive environment, avoiding the direct contact of the corrosive environment with the metal, thereby inhibiting the occurrence of corrosion. However, in the actual use process, when the organic coating is cured, the molecules will undergo polycondensation or crosslinking, resulting in uneven coating density, and the formed microscopic defects such as microcracks or microvoids become the barriers for the corro...

Claims

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Application Information

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IPC IPC(8): C09D5/08C09D5/16B01J13/20B01J13/14C08G12/12
CPCB01J13/14B01J13/206C08G12/12C09D5/08C09D5/1687
Inventor 段体岗黄国胜马力彭文山姜丹
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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