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Preparation method of PAMAM composite antifouling material

An anti-fouling and solution technology, applied in anti-fouling/underwater coatings, anti-corrosion coatings, biocide-containing paints, etc., can solve the problems of limited anti-fouling effect, to avoid adhesion and growth, good marine anti-fouling effect, The preparation method is simple and efficient

Active Publication Date: 2020-01-21
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that existing marine antifouling agents are polluting and have limited antifouling effects, most of them use metal ions to kill microorganisms for antifouling, the present invention provides a preparation method of PAMAM composite antifouling material

Method used

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  • Preparation method of PAMAM composite antifouling material
  • Preparation method of PAMAM composite antifouling material

Examples

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Effect test

Embodiment 1

[0041] A preparation method of PAMAM composite antifouling material, said preparation method comprising the following preparation steps:

[0042] 1) Add PAMAM G4.5 to water, add sodium hydroxide for saponification reaction, and then stand at a constant temperature of 45°C for 40 minutes, then add 1,5-dihydroxy-1,1,5,5 tetraphenyl-3,3 dimethyl Esterification of base siloxane and sulfonic acid, neutralize the acidity with ammonia water and react to obtain a layered liquid. The PAMAM material used and 1,5-dihydroxy-1,1,5,5 tetraphenyl-3,3 di The molar ratio of methyl siloxane is 1:1;

[0043] 2) Separating the layered liquid, removing the aqueous layer solution and retaining the ester layer solution;

[0044] 3) Prepare an aqueous dispersion of activated silicon powder, place 200-mesh silicon powder in 6wt% hydrofluoric acid aqueous solution and soak for 5 minutes, then place it in piranha solution and heat to 85°C for immersion and activation for 30 minutes, then filter out the...

Embodiment 2

[0046]A preparation method of PAMAM composite antifouling material, said preparation method comprising the following preparation steps:

[0047] 1) Add PAMAM G1.5 to water, add sodium hydroxide for saponification reaction, and then stand at a constant temperature of 40°C for 30 minutes, then add 1,5-dihydroxy-1,1,5,5 tetraphenyl-3,3 dimethyl Esterification with base siloxane and concentrated sulfuric acid, neutralize the acidity with ammonia water and react to obtain a layered liquid. The PAMAM material used and 1,5-dihydroxy-1,1,5,5 tetraphenyl-3,3 di The molar ratio of methyl siloxane is 1:1;

[0048] 2) Separating the layered liquid, removing the aqueous layer solution and retaining the ester layer solution;

[0049] 3) Prepare an aqueous dispersion of activated silicon powder, place 200-mesh silicon powder in 8wt% hydrofluoric acid aqueous solution and soak for 5 minutes, then place it in piranha solution and heat to 85°C for immersion and activation for 30 minutes, then ...

Embodiment 3

[0051] A preparation method of PAMAM composite antifouling material, said preparation method comprising the following preparation steps:

[0052] 1) Add PAMAM G3.5 to water, add sodium hydroxide for saponification reaction, and then stand at a constant temperature of 55°C for 30 minutes, then add 1,5-dihydroxy-1,1,5,5 tetraphenyl-3,3 dimethyl Esterification with base siloxane and concentrated sulfuric acid, neutralize the acidity with ammonia water and react to obtain a layered liquid. The PAMAM material used and 1,5-dihydroxy-1,1,5,5 tetraphenyl-3,3 di The molar ratio of methyl siloxane is 1:1;

[0053] 2) Separating the layered liquid, removing the aqueous layer solution and retaining the ester layer solution;

[0054] 3) Prepare an aqueous dispersion of activated silicon powder, place 200-mesh silicon powder in 6wt% hydrofluoric acid aqueous solution and soak for 5 minutes, then place it in piranha solution and heat to 85°C for immersion and activation for 30 minutes, then...

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Abstract

The invention relates to the field of antifouling coatings, in particular to a preparation method of a PAMAM composite antifouling material. The preparation method comprises the following preparationsteps: adding PAMAM into water, adding alkali for saponification reaction, carried out standing treatment at constant temperature, adding siloxane containing polyhydroxy and an acidic catalyst, neutralizing an acidic reactant, and carrying out the reaction to obtain a layered liquid; carrying out liquid separation on the layered liquid, and removing a water layer solution while reserving an esterlayer solution; and preparing an aqueous dispersion of activated silicon powder, mixing the aqueous dispersion of activated silicon powder with the ester layer solution, uniformly stirring the mixture, carried out standing treatment for precipitation, filtering out solid powder, and drying the solid powder to obtain the PAMAM composite antifouling material. The preparation method disclosed by theinvention is simple and efficient, and can achieve rapid and large-scale preparation; the preparation process and the preparation raw materials have the advantages of low toxicity, no toxicity and thelike, so that the whole preparation process and the obtained product are environmentally friendly; by forming the strong hydrophobic layer, attachment and growth of marine fouling organisms can be avoided, and a good marine antifouling effect is achieved.

Description

technical field [0001] The invention relates to the field of antifouling coatings, in particular to a preparation method of a PAMAM composite antifouling material. Background technique [0002] In the historical process of utilizing the ocean and developing marine resources, human beings have always been faced with the problem of preventing marine fouling organisms. Marine fouling organisms refer to marine organisms that attach to and grow on the surface of ships and artificial facilities in the sea, and have adverse effects on human economic activities. The massive attachment and growth of marine fouling organisms lead to increased sailing resistance, reduced speed, increased fuel consumption, blocked aquaculture cages, net cages, aquaculture purse seines, and nets for fixed fishing, and blocked seawater transportation pipelines, resulting in The failure of instruments and rotating mechanisms in the sea affects the normal use of acoustic instruments, buoys, nets, valves an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C08G73/02C09D5/16C09D5/08C09D187/00
CPCC08G73/028C08G83/001C09D5/08C09D5/1662C09D187/00
Inventor 徐焕志宋奕萱胡建坤
Owner ZHEJIANG OCEAN UNIV
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