Preparation method of organic silicon self-repair antifouling material

A self-healing, silicone technology, applied in the direction of antifouling/underwater coatings, coatings, paints containing biocides, etc., can solve the problems of inability to achieve self-repairing of coatings, depletion of repairing components, etc., to improve anti-fouling Pollution period effect, shortened service life effect, and broad application prospects

Active Publication Date: 2018-09-18
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

In the existing technology, most of the self-repairing coatings are repaired with external aid. The disadvantage is that after a repair, the repairing components will be partially exhausted, and most of the coatings cannot achieve repeated self-repairing.

Method used

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  • Preparation method of organic silicon self-repair antifouling material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The process of the preparation method of the organic silicon self-repairing antifouling material involved in this embodiment is as follows:

[0019] (1) Add 1.0 g of melamine and 25% glutaraldehyde aqueous solution into a three-necked flask, and stir magnetically for 1 h at 20° C.;

[0020] The amino group content in melamine is 2.4×10 -2 mol, the mass of glutaraldehyde is 9.8g, and the content of aldehyde group in glutaraldehyde aqueous solution is 4.8×10 -2mol, the mol ratio of amino functional group and aldehyde functional group is 0.5;

[0021] (2) 24.0g of PDMS with a molecular weight of 1000g / mol and 20ml of tetrahydrofuran were added to the three-necked flask of step (1);

[0022] (3) Under the condition of a water bath at 25° C., the three-necked flask in step (2) was magnetically stirred for 3 hours to obtain a silicone self-repairing antifouling material.

[0023] The self-repairing performance test process of the silicone self-repairing antifouling materia...

Embodiment 2

[0025] The process of the preparation method of the organic silicon self-repairing antifouling material involved in this embodiment is as follows:

[0026] (1) Add 1.26 g of melamine and 25% glutaraldehyde aqueous solution into a three-necked flask, and stir magnetically for 1 h at 25° C.;

[0027] Amino content in melamine is 3.0×10 -2 mol, the mass of glutaraldehyde is 16.3g, and the aldehyde group content in glutaraldehyde aqueous solution is 8.0×10 -2 mol, the mol ratio of amino functional group and aldehyde functional group is 0.375;

[0028] (2) 80.0g of PDMS with a molecular weight of 2000g / mol and 20ml of tetrahydrofuran were added to the three-necked flask of step (1);

[0029] (3) Under the condition of a water bath at 25° C., the three-necked flask in step (2) was magnetically stirred for 3 hours to obtain a silicone self-repairing antifouling material.

Embodiment 3

[0031] The process of the preparation method of the organic silicon self-repairing antifouling material involved in this embodiment is as follows:

[0032] (1) Add 0.5 g of melamine and 25% trisformaldehyde aqueous solution into a three-necked flask, and stir magnetically for 2 hours at 20° C.;

[0033] The amino group content in melamine is 1.2×10 -2 mol, the quality of trimesaldehyde is 1.62g, and the content of aldehyde groups in the aqueous solution of trimes is 3.0×10 -2 mol, the mol ratio of amino functional group and aldehyde functional group is 0.4;

[0034] (2) 90.0g of PDMS with a molecular weight of 7000g / mol and 10ml of tetrahydrofuran were added to the three-necked flask of step (1);

[0035] (3) Under the condition of a water bath at 25° C., the three-necked flask in step (2) was magnetically stirred for 3 hours to obtain a silicone self-repairing antifouling material.

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Abstract

The invention belongs to the technical field of oceaneering antifouling paint preparation, and relates to a preparation method of an organic silicon self-repair antifouling material. According to themethod, firstly, melamine and a water solution containing a double aldehyde group or multi-aldehyde group compound are added into a three-neck flask; at 0 to 30 DEG C, magnetic stirring is performed for 0.5 to 3h; then, amino terminated polydimethylsiloxane and an organic solvent are added into the three-neck flask; finally, under the water bath condition and at 0 to 60 DEG C, magnetic stirring isperformed in the three-neck flask for 0.5 to 8h; the organic silicon self-repair antifouling material is obtained. The invention provides a method for preparing the self-repair antifouling material on the basis of amino terminated polydimethylsiloxane and melamine through double aldehyde group or multi-aldehyde group compound crosslinking; the antifouling period of an organic silicon fouling release material can be effectively prolonged. The preparation method solves the problems that the organic silicon antifouling material generally has poor mechanical property; in the use process, the damage caused by marine sediment, marine organisms and the like can easily occur, so that the use period of the organic silicon antifouling material is shortened. Wide application prospects are realized.

Description

Technical field: [0001] The invention belongs to the technical field of preparation of marine engineering antifouling coatings, and in particular relates to a method for preparing an organic silicon self-repairing antifouling material, which is prepared by crosslinking amino-terminated polydimethylsiloxane (PDMS) and melamine through a dialdehyde compound Self-healing antifouling materials to extend the antifouling period of silicone antifouling coatings. Background technique: [0002] In the marine environment, coating antifouling coatings is currently the most effective antifouling measure for marine facilities and equipment. The fouling-release antifouling coating based on silicone resin as the main material is antifouling through the characteristics of low surface energy on the coating surface. It does not contain biocide and almost consumes no materials. It is environmentally friendly and long-term antifouling. Potential is a research hotspot and an important developme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/24C09D183/08C09D5/16
CPCC08J3/24C08J2383/08C09D5/1675C09D183/08
Inventor 孙智勇陈光孟蔺存国张金伟
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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