Unlock instant, AI-driven research and patent intelligence for your innovation.

A capsaicin-like amphiphilic network marine antifouling coating and its preparation and application method

A marine antifouling and capsaicin technology, which is applied to the preparation of amphiphilic network antifouling coatings and the field of cross-linked network antifouling coatings, can solve marine ecological environment and human health hazards, poor adhesion to substrates, and antifouling performance. Insufficient and other problems, to achieve the effect of strong industrialization prospects, high adhesion, resistance to protein adsorption and bacterial adhesion

Active Publication Date: 2019-04-09
DONGHUA UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of capsaicinoid amphiphilic network low surface energy marine antifouling coating and its preparation and application, the coating has low surface energy and elastic modulus, good chemical stability and weather resistance, and substrate Excellent bonding performance, while avoiding the use of toxic antifouling agents, is expected to become an advanced environment-friendly antifouling coating material, which can overcome the current traditional marine antifouling coatings, which use a large number of toxic antifouling agents (organic Tin, cuprous oxide, etc.) will cause serious harm to the marine ecological environment and human health, while silicon-based or fluorine-based resin silicone oil with low surface energy has good desorption performance, but poor adhesion to the substrate, preventing Insufficient pollution performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A capsaicin-like amphiphilic network marine antifouling coating and its preparation and application method
  • A capsaicin-like amphiphilic network marine antifouling coating and its preparation and application method
  • A capsaicin-like amphiphilic network marine antifouling coating and its preparation and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] A preparation method of a capsaicin-like amphiphilic network marine antifouling coating, the specific steps are:

[0069] 1. Use guaiacol and unsaturated amide to carry out Friedel-Crafts alkylation reaction to obtain capsaicin-like structural monomer: dissolve 10 parts of N-methylolacrylamide in 50 parts of ethanol, and then add 12.5 parts of guaiac wood to it Phenol and 2.4 parts of anhydrous magnesium sulfate were placed in an ice-water bath and stirred for 30 minutes, then 5 parts of concentrated sulfuric acid was added dropwise, and after 2 hours of reaction, the ice-water bath was removed and heated and stirred in an oil bath at 35°C for 3 days for Friedel-Crafts alkylation. reaction. After the reaction, the white precipitate obtained by filtration with a Buchner funnel is the crude product of capsaicinoid (HMBA). The refined capsaicinoid is obtained by recrystallization, and the specific steps of the recrystallization are: adding 20 parts of ethanol to the crude...

Embodiment 2

[0074] A preparation method of a capsaicin-like amphiphilic network marine antifouling coating, the specific steps are:

[0075] 1. Using guaiacol and unsaturated amide for Friedel-Crafts alkylation reaction to obtain capsaicin-like structural monomers:

[0076] Dissolve 10 parts of N-methylolacrylamide in 100 parts of ethanol, then add 20 parts of guaiacol and 2.4 parts of anhydrous magnesium sulfate, place it in an ice-water bath and stir for 30 minutes, then add 8 parts of Concentrated sulfuric acid, reacted for 2 hours, removed the ice-water bath and continued heating and stirring in a 35°C oil bath for 6 days to carry out Friedel-Crafts alkylation reaction. After the reaction, the white precipitate obtained by filtration with a Buchner funnel is the crude product of capsaicinoid (HMBA). The refined capsaicinoid is obtained through recrystallization, and the specific steps of the recrystallization are: adding 30 parts of ethanol to the crude capsaicinoid product, heating ...

Embodiment 3

[0081] A preparation method of a capsaicin-like amphiphilic network marine antifouling coating, the specific steps are:

[0082] 1. Using guaiacol and unsaturated amide for Friedel-Crafts alkylation reaction to obtain capsaicin-like structural monomers:

[0083] Dissolve 10 parts of N-methylolacrylamide in 150 parts of ethanol, then add 32.5 parts of guaiacol and 5 parts of anhydrous magnesium sulfate, place it in an ice-water bath and stir for 30 minutes, then add 10 parts of Concentrated sulfuric acid, reacted for 2 hours, removed the ice-water bath and continued heating and stirring in a 35°C oil bath for 5 days to carry out the Friedel-Crafts alkylation reaction. After the reaction, the white precipitate obtained by filtration with a Buchner funnel is the crude product of capsaicinoid (HMBA). The refined capsaicinoid is obtained by recrystallization, and the specific steps of the recrystallization are: adding 40 parts of ethanol to the crude capsaicinoid product, heating ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
breaking strengthaaaaaaaaaa
strengthaaaaaaaaaa
contact angleaaaaaaaaaa
Login to View More

Abstract

The invention provides a capsaicinoid-like-based amphiphilic network marine antifouling coating as well as a preparation method and an application thereof. The preparation method of the capsaicinoid-like-based amphiphilic network marine antifouling coating is characterized by comprising steps as follows: capsaicinoid-like-based structural monomers are obtained by a reaction of guaiacol and unsaturated amide through friedel-crafts alkylation reaction; the obtained capsaicinoid-like-based structural monomers, a crosslinking agent with unsaturated polyfunctional groups and mercapto thiol are subjected to photoinduced crosslinking, and the capsaicinoid-like-based amphiphilic network marine antifouling coating is obtained. The prepared marine antifouling coating has the following advantages: the mechanical strength, the modulus and the substrate adhesion are higher than those of a general antifouling coating, swelling is almost avoided in sea water, and quite high inhibition and desorption effects on adhesion of common fouling organisms in the ocean are realized. The coating has a bactericidal function, can resist protein adsorption and bacterial adhesion at the same time and can play a double protective effect.

Description

technical field [0001] The invention belongs to the field of marine antifouling polymer materials, and in particular relates to a method for preparing an amphiphilic network antifouling coating aimed at a capsaicinoid structure, which can be used to form a low surface energy coating with antifouling and antibacterial effects on the surface of marine ships and the like. Environmentally friendly cross-linked network antifouling coating. Background technique [0002] The importance of anti-fouling coatings has gradually been recognized due to the emergence of biofouling situations during the development of the ocean. Antifouling coatings not only protect underwater structures from erosion, but also save energy for seagoing vessels. Therefore, the development of effective antifouling coatings has far-reaching significance. [0003] At present, marine antifouling coatings put into commercial application still release toxic antifouling agents as the main antifouling means, which...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09D181/02C09D5/16C09D5/14C08G75/045
CPCC08G75/045C09D5/14C09D5/1662C09D181/02
Inventor 何春菊王海晔
Owner DONGHUA UNIV