Static anti-fouling self-layering organosilicon coating and preparation method and application thereof

A silicone coating and self-layering technology, applied in antifouling/underwater coatings, coatings, paints containing biocide, etc., can solve the problems of inability to play antifouling effect, achieve excellent antifouling ability and reduce surface energy , Excellent fouling and desorption ability

Active Publication Date: 2019-09-10
SOUTH CHINA UNIV OF TECH
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Grafting antifouling functional groups can improve the static antifouling ability of silicone without causing environmental problems, but due t

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
  • Static anti-fouling self-layering organosilicon coating and preparation method and application thereof
  • Static anti-fouling self-layering organosilicon coating and preparation method and application thereof
  • Static anti-fouling self-layering organosilicon coating and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0055] Example 1

[0056] 1. In the reaction vessel, add 70 parts by weight of hexafluorobutyl acrylate, 25 parts by weight of polyethylene glycol methacrylate with a degree of polymerization of 10, and 4 parts by weight of mercaptomethyltrimethoxysilane (purchased from Gelest) 1. 1 part by weight of benzoyl peroxide was reacted at 120°C for 12 hours to obtain a fluorocarbon ester-anti-fouling monomer telomer with a molecular weight of 2500 g / mol.

[0057] 2. In the reaction vessel, add 50 parts by weight of silanol-terminated polydimethylsiloxane (with a viscosity of 5000 mPa·s), 40 parts by weight of the fluorocarbon ester-antifouling monomer telomer prepared in step 1, 9 Parts by weight of xylene and 1 part by weight of dibutyltin dilaurate, stirred at room temperature for 10 minutes, sprayed on the steel plate, and cured at room temperature for 1 day to obtain a coating. The elastic modulus of the coating is 2.3 MPa. The coating was tested in shallow sea, and there was no sea...

Example Embodiment

[0058] Example 2

[0059] 1. In the reaction vessel, add 10 parts by weight of trifluoroethyl acrylate and 70 parts by weight of ethyl carboxybetaine acrylate (the structural formula is as described in formula 1, wherein R is C 2 H 4 ), 1 part by weight mercaptopropyltrimethoxysilane, 0.05 parts by weight of azobisisobutyronitrile, 18.95 parts by weight of acetone, reacted at 60°C for 48 hours to obtain a fluorocarbon ester-anti-fouling monomer telomer with molecular weight 10000g / mol;

[0060]

[0061] 2. In the reaction vessel, add 90 parts by weight of silanol-terminated polydimethylsiloxane (viscosity 500mPa·s), 1 part by weight of the fluorocarbon ester-antifouling monomer telomer prepared in step 1, 9 Parts by weight of tetraethyl orthosilicate and 0.1 parts by weight of di-n-octyl tin dilaurate were sprayed on the steel plate after stirring for 30 minutes at room temperature, and cured for 1 day at room temperature to obtain a coating. The coating elastic modulus is 1.5MPa....

Example Embodiment

[0062] Example 3

[0063] 1. In the reaction vessel, add 10 parts by weight of octafluoropentyl methacrylate, 8 parts by dodecafluoroheptyl acrylate, 10 parts by weight of dimethylaminoethyl methacrylate (purchased from Sigma Aldrich), and 40 parts by weight Mercaptomethyltriethoxysilane (purchased from Sigma Aldrich), 2 parts by weight of phosphazene salt (purchased from Sigma Aldrich) and 30 parts by weight of isopropanol, reacted at 50°C for 24 hours to obtain fluorocarbon ester-anti-fouling The monomer telomer has a molecular weight of 1000 g / mol.

[0064] 2. In the reaction vessel, add 65 parts by weight of silanol-terminated polydimethylsiloxane (viscosity 3000mPa·s), 5 parts by weight of the fluorocarbon ester-antifouling monomer telomer prepared in step 1, 20 Parts by weight of tetrapropyl orthosilicate and 10 parts by weight of acetic acid are sprayed on the steel plate after stirring for 10 minutes at room temperature and curing for 3 days at room temperature to obtain a...

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
Viscosityaaaaaaaaaa
Elastic modulusaaaaaaaaaa
Viscosityaaaaaaaaaa
Login to view more

Abstract

The invention discloses static anti-fouling self-layering organosilicon coating and a preparation method and application thereof. The coating includes an A component and a B component, wherein the A component includes 50-90 parts of silanol-terminated polydimethylsiloxane, 1-40 parts of a fluorocarbon ester-anti-fouling monomer telomer, 0.1-10 parts of a catalyst, and 0-30 parts of a solvent; theB component is 5-20 parts of silicate ester; the fluorocarbon ester-anti-fouling monomer telomer is prepared from (meth)acrylate fluorocarbon ester, a (meth)acrylate anti-fouling monomer, a mercapto silane coupling agent, an initiator and a solvent. The coating can form self-layering coatings with anti-fouling functional groups being enriched on surfaces of the coatings, thus endowing a material with excellent fouling resistance. Through the organosilicon, the coating has good decontamination ability. The self-layering material can meet anti-fouling requirements of ships with low speeds, offshore oil platforms and other facilities, and has excellent drag reduction performance.

Description

technical field [0001] The invention belongs to the technical field of marine antifouling materials, and in particular relates to a static antifouling self-layering organic silicon coating and a preparation method and application thereof. Background technique [0002] In recent years, developing marine resources and developing marine economy has become an important strategy of many countries. However, the problem of marine biofouling has brought serious problems to the marine industry and maritime activities. It refers to the biofouling formed by marine animals, plants and microorganisms attached to the surface submerged in seawater, which will increase the resistance of ships and increase fuel consumption. , accelerated metal corrosion and other consequences. At present, the application of self-polishing marine antifouling coatings is the most commercial antifouling method, but such coatings release a large amount of metal antifouling agents, which have an impact on marine...

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
IPC IPC(8): C09D183/04C09D151/08C09D133/16C09D5/16C09D7/63
CPCC09D5/1637C09D5/1675C09D5/1687C09D183/04C08L51/08C08L33/16C08K5/5415
Inventor 张广照马春风谢庆宜潘健森
Owner SOUTH CHINA UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap