Preparation method of magnetic particle-enriched anticorrosion-antifouling integrated self-repairing microcapsule

A technology of self-healing microcapsules and magnetic particles, which is applied in the direction of microcapsule preparation, microsphere preparation, anti-corrosion coatings, etc., can solve the problems of relatively harsh curing conditions, affecting the overall physical properties of the coating, and increasing the cost of the coating. Improve the release rate and repair effect, enhance the anti-corrosion and anti-fouling performance, and ensure the effect of running stability

Active Publication Date: 2021-06-15
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

By increasing the amount of self-healing microcapsules, the cost of the coating will be greatly increased, and if the content of microcapsules is too large, it will also affect the overall physical properties of the coating.
At the same time, the curing time of dry vegetable oil is also longer, and the requirements for curing conditions are relatively strict, and the repair efficiency of pure vegetable oil is not high

Method used

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  • Preparation method of magnetic particle-enriched anticorrosion-antifouling integrated self-repairing microcapsule
  • Preparation method of magnetic particle-enriched anticorrosion-antifouling integrated self-repairing microcapsule
  • Preparation method of magnetic particle-enriched anticorrosion-antifouling integrated self-repairing microcapsule

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The process of the magnetic particle enrichment anti-corrosion and anti-fouling integrated self-repairing microcapsule preparation method involved in this embodiment includes two steps: preparing magnetic nanospheres and preparing self-repairing microcapsules:

[0037] (1) Preparation of magnetic nanospheres:

[0038] (1) FeCl 3 ·6H 2 O, CoCl 2 ·6H 2 O and sodium acetate are added successively in the mixed solution that ethylene glycol and diethylene glycol form, stir at room temperature, obtain No. 1 mixed solution;

[0039] (2) Add SDBS (sodium dodecylbenzene sulfonate) into No. 1 mixed solution and stir to obtain No. 2 mixed solution;

[0040] (3) Transfer the No. 2 mixed solution into a 100ml reaction kettle, place it in a vacuum drying oven and react for 6-10h in a vacuum environment at a temperature of 200°C, and then cool to room temperature to obtain the No. 3 mixed solution;

[0041] (4) Carry out magnetic separation to the No. 3 mixed solution with a magn...

Embodiment 2

[0052] The process of the magnetic particle enrichment anti-corrosion and anti-fouling integrated self-repairing microcapsule preparation method involved in this embodiment includes two steps: preparing magnetic nanospheres and preparing self-repairing microcapsules:

[0053] (1) Preparation of magnetic nanospheres: same as in Example 1;

[0054] (2) Preparation of self-healing microcapsules:

[0055] (1) Add 8g of OP-10 and 2g of PVA into 1000ml of ultrapure water, stir until completely dissolved and uniformly dispersed with a stirring disperser to obtain No. 4 mixed solution;

[0056] (2) Add 20g urea, 2g ammonium chloride and 2g resorcinol successively in No. 4 mixed solution, after dissolving, after the dilute hydrochloric acid aqueous solution that is 1% with mass percentage concentration is adjusted to 2.5 after the pH value, carry out acidification, Obtain No. 5 mixed solution;

[0057] (3) Add 20 g of tung oil and 5 g of phenolic amide into the No. 5 mixed solution, ...

Embodiment 3

[0063] The process of the magnetic particle enrichment anti-corrosion and anti-fouling integrated self-repairing microcapsule preparation method involved in this embodiment includes two steps: preparing magnetic nanospheres and preparing self-repairing microcapsules:

[0064] (1) Preparation of magnetic nanospheres: same as in Example 1;

[0065] (2) Preparation of self-healing microcapsules:

[0066] (1) Add 10g of OP-10 and 1g of PVA into 1000ml of ultrapure water, and stir until completely dissolved and uniformly dispersed with a stirring disperser to obtain No. 4 mixed solution;

[0067] (2) Add 20g urea, 2g ammonium chloride and 2g resorcinol successively in No. 4 mixed solution, after dissolving, after the dilute hydrochloric acid aqueous solution that is 1% with mass percent concentration adjusts pH value to 3, carry out acidification, Obtain No. 5 mixed solution;

[0068] (3) Add 40 g of tung oil and 10 g of phenolic amide to the No. 5 mixed solution, stir until the ...

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Abstract

The invention belongs to the technical field of marine corrosion protection, and particularly relates to a preparation method of a magnetic particle-enriched anticorrosion-antifouling integrated self-repairing microcapsule. The preparation method comprises the following steps: with materials such as epoxy resin, polyurethane, tung oil and the like as self-repairing agents, adding dispersing agents such as an emulsifier and the like, and uniformly dispersing a core material into an aqueous solution to form a stable oil-in-water microemulsion; then subjecting urea and formaldehyde to a condensation polymerization reaction to coat micro-droplets so as to prepare a microcapsule which is uniform in particle size and has core-shell structure; allowing magnetic nanospheres to be generated on the surface of the wall of the microcapsule in situ so as to synthesize microcapsule particles with self-repairing and anticorrosion effects; and compounding an emulsifier with the surfaces of the microcapsule and enabling the magnetic nanospheres to be selectively deposited so as to achieve the purpose of uniformity and controllability. The preparation method is simple, test conditions are convenient, large-scale production can be achieved, the service life cycle of an organic coating can be effectively prolonged, a release rate and repairing effect can be improved, the anticorrosion and antifouling performance of the coating can be enhanced, and long-period corrosion prevention of the organic coating can be achieved.

Description

Technical field: [0001] The invention belongs to the technical field of marine corrosion protection, and specifically relates to a method for preparing magnetic particle-enriched anti-corrosion and anti-fouling integrated self-repairing microcapsules. The prepared microcapsules are used in marine environments, especially tropical oceans with high temperature, high salinity and high radiation Long-term anti-corrosion and anti-fouling of environmental metal structures and equipment. Background technique: [0002] In the field of corrosion protection, organic coatings can effectively isolate the metal substrate from the corrosive environment and avoid direct contact between the corrosive environment and the metal substrate, thereby inhibiting the occurrence of corrosion. However, in the actual use process, when the organic coating is cured, the molecules will undergo polycondensation and crosslinking, or under the conditions of ultraviolet radiation and mechanical friction and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08C09D5/16C09D7/61C09D7/65B01J13/02B01J13/14
CPCB01J13/02B01J13/14C09D5/08C09D5/16C09D5/1687
Inventor 黄国胜杨羽平段体岗姜丹
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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