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Composite material based on cyclodextrin-embedded salicylamide antifouling agent molecules and preparation method

A technology of composite materials and antifouling agents, applied in antifouling/underwater coatings, biocide-containing paints, coatings, etc., can solve problems such as unfriendly environment and destructive impact on the ecological environment, and achieve broad application prospects, The effect of prolonging the shelf life

Inactive Publication Date: 2018-06-15
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

On the other hand, the existing anti-fouling agents are not friendly to the environment and will cause destructive effects on the ecological environment

Method used

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  • Composite material based on cyclodextrin-embedded salicylamide antifouling agent molecules and preparation method
  • Composite material based on cyclodextrin-embedded salicylamide antifouling agent molecules and preparation method
  • Composite material based on cyclodextrin-embedded salicylamide antifouling agent molecules and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of composite material of the present invention based on cyclodextrin embedding saliamide antifouling agent molecules, the preparation process steps are as follows:

[0030] a. Weigh 2.52g of 2-hydroxy-N-octylbenzamide and 5.75g of β-cyclodextrin, and put them together into a three-necked flask with a reflux condensation device (the molar ratio is 2:1);

[0031] b. Add 200mL of absolute ethanol to the three-necked flask, and adjust the antifouling agent concentration to 0.05mol / L;

[0032] c. Heating the three-neck flask under magnetic stirring conditions in a water bath at 60°C for 48 hours, using the hydrophobic cavity formed by β-cyclodextrin to embed the molecules of the salicylamide antifouling agent;

[0033] d. Finally, the product obtained in step c was washed and dried at 60° C. for 12 hours to obtain a β-cyclodextrin-embedded antifouling agent composite material.

Embodiment 2

[0035] A kind of composite material of the present invention based on cyclodextrin embedding saliamide antifouling agent molecules, the preparation process steps are as follows:

[0036] a. Weigh 1.87g of 2-hydroxy-N-octylbenzamide and 4.87g of α-cyclodextrin, and put them together into a three-necked flask with a reflux condensation device (the molar ratio is 1.5:1);

[0037] b. Add 100mL dimethylformamide to the three-necked flask, and adjust the antifouling agent concentration to 0.075mol / L;

[0038] c. Heating the three-neck flask under magnetic stirring conditions in a water bath at 20°C for 32 hours, and using the hydrophobic cavity formed by α-cyclodextrin to embed the molecules of the salicylamide antifouling agent;

[0039] d. Finally, the product obtained in step c was washed and dried at 40°C for 10 hours to obtain the α-cyclodextrin-embedded antifouling agent composite material.

Embodiment 3

[0041] A kind of composite material of the present invention based on cyclodextrin embedding saliamide antifouling agent molecules, the preparation process steps are as follows:

[0042] a. Weigh 6.23g of 2-hydroxy-N-octylbenzamide and 6.48g of γ-cyclodextrin, and put them together into a three-necked flask with a reflux condensation device (the molar ratio is 5:1);

[0043] b. Add 250mL of a mixed solvent of absolute ethanol / methanol with a volume ratio of 1:1 to the three-necked flask, and adjust the antifouling agent concentration to 0.1mol / L;

[0044] c. The three-necked flask was heated under magnetic stirring conditions at 80°C for 12 hours in a water bath, and the hydrophobic cavity formed by γ-cyclodextrin was used to embed the molecules of the salicylamide antifouling agent;

[0045] d. Finally, the product obtained in step c was washed and dried at 50° C. for 15 hours to obtain a γ-cyclodextrin-embedded antifouling agent composite material.

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Abstract

The invention provides a composite material based on a cyclodextrin-embedded salicylamide antifouling agent molecules and a preparation method, and belongs to the technical fields of an antifouling agent controlled release material and preparation, aiming at the problem that an efficient control measure lacks in an application process of an antifouling agent, which results in short use period of an antifouling coating. Cyclodextrin and eco-friendly salicylamide antifouling molecules are adopted, a hydrophobic cavity is formed by cyclodextrin molecules, and van der Waals force, hydrophobic interaction, and size matching effect among host-guest molecules are taken as driving force, so that cyclodextrin embeds the antifouling molecules and a cyclodextrin-antifouling agent composite material is prepared. The composite material can release an antifouling agent into seawater in a controlled manner, prevents sudden release of the antifouling agent, and prolongs the antifouling valid period ofthe antifouling coating. The composite material is a controlled release antifouling material with great development potential and has bright application prospects.

Description

technical field [0001] The invention relates to the technical field of antifouling agent controlled-release materials and preparation, in particular, it provides a composite material and a preparation method based on cyclodextrin-based embedding of salamide antifouling agent molecules. Background technique [0002] The occurrence of marine biofouling will bring very serious harm to coastal defense, marine transportation, fishery, etc. At present, one of the effective solutions is to incorporate antifouling materials that can inhibit biological adhesion into the paint, such as organic tin, copper, organic zinc and other antifouling agents. However, the use of these antifouling agents presents two problems. On the one hand, the lack of effective release control measures during the use of antifouling agents is prone to "explosive release" of antifouling agents, resulting in a large amount of waste in the use of antifouling agents. Therefore, how to realize the controllable re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/16C08K9/10C08K5/20
CPCC08K5/20C08K9/10C09D5/1625
Inventor 孙智勇高海平蔺存国郑纪勇
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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