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Environment-friendly bio-based silicone epoxy/nano-silver composite coating, preparation method and application

A silicone epoxy and composite coating technology, which is applied in coatings, anti-fouling/underwater coatings, biocide-containing paints, etc., can solve the problems of high cost, low surface energy resin and substrate adhesion, and poor mechanical properties

Active Publication Date: 2021-04-30
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the low surface energy resin has low adhesion to the substrate, poor mechanical properties, and high cost, and its antifouling effect is related to the flow rate, and the best antifouling effect is often not achieved under static water conditions.

Method used

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  • Environment-friendly bio-based silicone epoxy/nano-silver composite coating, preparation method and application
  • Environment-friendly bio-based silicone epoxy/nano-silver composite coating, preparation method and application
  • Environment-friendly bio-based silicone epoxy/nano-silver composite coating, preparation method and application

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preparation example Construction

[0034] An aspect of the embodiments of the present invention provides a method for preparing an environment-friendly bio-based silicone epoxy / nano-silver composite coating, which includes:

[0035] Provide a uniform mixed reaction system including bio-based silicone epoxy resin, amine curing agent, hydrophilic polymer, nano-silver source and organic solvent;

[0036] The uniformly mixed reaction system is cured to form a coating, and then the coating is irradiated with ultraviolet light or sunlight to obtain an environment-friendly bio-based organic silicon epoxy / nano-silver composite coating.

[0037] As one of the preferred schemes, the preparation method specifically includes:

[0038] providing a first mixture comprising a bio-based silicone epoxy resin and an amine curing agent;

[0039] providing a second mixed solution comprising a hydrophilic polymer, a nano-silver source and an organic solvent;

[0040] The first mixed liquid and the second mixed liquid are uniforml...

Embodiment 1

[0075] The structural formula of the bio-based silicone resin used in this embodiment is as follows: wherein R 1 with R 2 Both are hydrogen atoms, n=m=3.

[0076]

[0077] The hydrophilic polymer used comprises structural units represented by the following formula: wherein a=1, b=15, Mn=6104.

[0078]

[0079] Where R is the following structure:

[0080]

[0081] The preparation method of a kind of interpenetrating network bio-based silicone epoxy / nano-silver composite coating of the present embodiment includes: taking 5g of the above-mentioned epoxy resin, and adding 0.45g of isophorone diamine curing agent therein, and simultaneously Pre-crosslinking is carried out by mechanical stirring, the stirring speed is 200r / min, the stirring makes the silicone system have a certain viscosity and is ready for use. Take 0.27 g of the above-mentioned hydrophilic polymer, dissolve it in chloroform and set aside. Take 0.06g of silver trifluoromethanesulfonate and dissolve it ...

Embodiment 2

[0083] The structural formula of the bio-based silicone resin used in this embodiment is as follows: wherein R 1 with R 2 All are benzene rings, n=m=10.

[0084]

[0085] The hydrophilic polymer used comprises structural units represented by the following formula: wherein a=1, b=100, Mn=95565.

[0086]

[0087] Where R is the following structure:

[0088]

[0089] The preparation method of a kind of interpenetrating network bio-based silicone epoxy / nano-silver composite coating of the present embodiment comprises: taking 5g of the above-mentioned epoxy resin, and adding 0.20g of isophorone diamine curing agent therein, and simultaneously Pre-crosslinking is carried out by mechanical stirring, the stirring speed is 200r / min, the stirring makes the silicone system have a certain viscosity and is ready for use. Take 0.27 g of the above-mentioned hydrophilic polymer and dissolve it in tetrahydrofuran for use. Get 0.35g silver trifluoromethanesulfonate and dissolve it ...

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Abstract

The invention discloses an environment-friendly bio-based organic silicon epoxy / nano-silver composite coating, a preparation method and an application. The preparation method includes: providing a uniformly mixed reaction system comprising a bio-based silicone epoxy resin, an amine curing agent, a hydrophilic polymer, a nano-silver source and an organic solvent; curing the uniformly mixed reaction system to form a coating , and then irradiate the coating with ultraviolet light or sunlight to obtain an environmentally friendly bio-based silicone epoxy / nano-silver composite coating. The composite coating is composed of bio-based organosilicon epoxy as the main network, supplemented by a hydrophilic hydrogel network interspersed therein, and the interpenetrating network is formed between the two networks through nano-silver chelation. The composite coating system of the present invention fully utilizes the respective advantages of the bio-based organosilicon epoxy system and the hydrogel system, the two enhance the mechanical properties of the coating through the chelation of nano-silver, and strengthen the composite coating Excellent antifouling performance, especially suitable for aquaculture and other fields with high environmental protection requirements.

Description

technical field [0001] The invention relates to a bio-based epoxy composite coating, in particular to an environment-friendly bio-based organic silicon epoxy / nano-silver composite coating with an interpenetrating network, its preparation method and application, and belongs to the technical field of antifouling material preparation . Background technique [0002] Marine biofouling refers to the phenomenon of marine organisms attaching to the surface of a substrate submerged in seawater. Marine biofouling has had many adverse effects on human marine production activities. A large number of fouling organisms such as barnacles and mussels adhere to the hull, which increases navigation resistance and weight, increases fuel consumption and carbon emissions, and also brings ecological impacts such as biological invasion as the hull sails. The fouling organisms attached to the breeding facilities reduce the water exchange efficiency of the cages, leading to the deterioration of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/06C09D133/14C09D5/16
CPCC08K2003/0806C08K2201/011C08L2205/04C09D5/1675C09D5/1687C09D183/06C08L33/14C08K3/08
Inventor 卢光明田澍李靖宇刘栓赵海超乌学东王立平
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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