Polymer-based antifouling coating based on thermal spraying technology as well as preparation method and application thereof

An anti-fouling coating and polymer technology, applied in anti-fouling/underwater coatings, coatings, devices for coating liquids on surfaces, etc. , to achieve the effect of remarkable antifouling effect, easy availability of raw materials and good controllability

Inactive Publication Date: 2022-01-25
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the above methods can obtain the capsaicin antifouling coating, the bonding strength between the coating and the substrate is not high enough, and it is easy to fall off

Method used

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  • Polymer-based antifouling coating based on thermal spraying technology as well as preparation method and application thereof
  • Polymer-based antifouling coating based on thermal spraying technology as well as preparation method and application thereof
  • Polymer-based antifouling coating based on thermal spraying technology as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In this embodiment, the substrate is selected from 316 stainless steel with a thickness of about 2mm, and the preparation method of the polymer-based antifouling coating based on thermal spraying technology is as follows:

[0049] (1) Clean the substrate with acetone, hydrochloric acid, and deionized water in sequence, and use 60-mesh brown corundum sand to roughen the surface of the substrate to increase the surface roughness of the substrate and improve the bonding strength of the coating. The air used for sandblasting The air pressure is 0.5MPa, and the blasting time is 60s;

[0050] (2) Adopt the method for flame spraying to prepare polyethylene-capsaicin coating on the substrate surface after roughening treatment, use high-density polyethylene-capsaicin composite powder as spraying material, the massfraction of capsaicin in the composite powder is 2% , the process parameters of flame spraying are: combustion-supporting gas O 2 The pressure is 0.4MPa, the flow rate...

Embodiment 2

[0057] In this embodiment, the substrate is selected from 316 stainless steel with a thickness of about 2mm, and the preparation method of the polymer-based antifouling coating based on thermal spraying technology is as follows:

[0058] (1) Clean the substrate with acetone, hydrochloric acid, and deionized water in sequence, and use 120 mesh brown corundum sand to roughen the surface of the substrate to increase the surface roughness of the substrate and improve the bonding strength of the coating. The air pressure used for sandblasting 0.5MPa, sandblasting time is 60s;

[0059] (2) The flame spraying method is used to prepare polyethylene-capsaicin coating on the surface of the roughened substrate, and the high-density polyethylene-capsaicin composite powder is used as the spraying material, and the mass fraction of capsaicin in the composite powder is 1%. , the process parameters of flame spraying are: combustion-supporting gas O 2 The pressure is 0.6MPa, the flow rate is ...

Embodiment 3

[0065] In this embodiment, the substrate is selected from 316 stainless steel with a thickness of about 2mm, and the preparation method of the polymer-based antifouling coating based on thermal spraying technology is as follows:

[0066] (1) Clean the substrate with acetone, hydrochloric acid, and deionized water in sequence, and use 200 mesh brown corundum sand to roughen the surface of the substrate to increase the surface roughness of the substrate and improve the bonding strength of the coating. The air pressure used for sandblasting 0.5MPa, sandblasting time is 50s;

[0067] (2) The flame spraying method is used to prepare polyethylene-capsaicin coating on the surface of the roughened substrate, and the high-density polyethylene-capsaicin composite powder is used as the spraying material, and the mass fraction of capsaicin in the composite powder is 2.5%. , the process parameters of flame spraying are: combustion-supporting gas O 2 The pressure is 0.8MPa, the flow rate i...

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Abstract

The invention discloses a preparation method of a polymer-based antifouling coating based on a thermal spraying technology. The preparation method comprises the following steps: (1) carrying out surface roughening treatment on a substrate; (2) preparing a polymer-capsaicin coating on the roughened surface of a matrix by using a thermal spraying technology; and (3) remelting the polymer-capsaicin coating, and cooling to obtain the polymer-based antifouling coating based on the thermal spraying technology. The preparation method is simple, raw materials are easy to obtain, controllability is good, large-scale production is facilitated, the prepared polymer-based antifouling coating based on the thermal spraying technology is high in binding force with the matrix, the antifouling coating combines the advantages of a polymer material and the antifouling characteristic of capsaicin, the capsaicin is dispersed in the coating, and the coating has excellent antibacterial effect, anti-algae performance and antifouling effect, and has a wide application prospect in the field of marine antifouling.

Description

technical field [0001] The invention relates to the technical field of marine antifouling, in particular to a polymer-based antifouling coating based on thermal spraying technology, a preparation method and an application thereof. Background technique [0002] With the advancement of science and technology and society, marine industries and marine engineering such as warships, shipbuilding, marine transportation, fishery, submarine oil and gas extraction, and marine aquaculture are also developing rapidly. However, fixed deep-sea facilities, hulls, and fishing gear will be destroyed by algae during the voyage. , mussels, barnacles, and oysters. Marine fouling refers to the attachment and growth of marine organisms to the surface exposed to seawater, causing great harm to marine ships and marine facilities. It will not only increase the frictional resistance of ships, reduce the speed of navigation, increase fuel consumption, block pipelines, Mesh holes lead to aging damage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D123/06C09D5/46C09D5/16C09D5/03B05D5/00B05D7/24
CPCC09D123/06C09D5/1625C09D5/033B05D5/00B05D7/24C08K5/20
Inventor 宋子恒陈秀勇张波涛黄晶凤晓华刘晓梅田野刘奕周平淡焱鑫吴双杰李华
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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