Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Organic and inorganic composite concrete protective coating modified by coupling agents, method for preparing organic and inorganic composite concrete protective coating and application thereof

An inorganic composite and protective coating technology, applied in coatings, anti-corrosion coatings, etc., can solve problems such as easy cracking and incompatibility of organic and inorganic materials, achieve strong alkali resistance, high chemical stability and corrosion resistance, overcome easy cracking effect

Inactive Publication Date: 2018-08-17
SOUTH CHINA UNIV OF TECH
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned shortcomings and deficiencies of the prior art, the object of the present invention is to provide a kind of organic-inorganic composite protective coating modified by a joint agent, which overcomes the problem of easy cracking caused by the incompatibility of organic and inorganic materials, and improves the composite protective coating. Comprehensive performance of layers

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
  • Organic and inorganic composite concrete protective coating modified by coupling agents, method for preparing organic and inorganic composite concrete protective coating and application thereof
  • Organic and inorganic composite concrete protective coating modified by coupling agents, method for preparing organic and inorganic composite concrete protective coating and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] At room temperature, mix ethyl orthosilicate with deionized water and ethanol at a molar ratio of 1:3:3, and gradually add hydroxyl-terminated polydimethylsiloxane and polysiloxane under the action of magnetic stirring The mass ratio to ethyl orthosilicate is 0.5, and stirred for 20 minutes. Under magnetic stirring, gradually add coupling agent KH560 to modify and prepare an organic-inorganic composite protective coating. The mass ratio of coupling agent to tetraethyl orthosilicate is 0.5, stir for 20 minutes until the solution is uniform, and then slowly add catalyst n-octylamine drop by drop. The molar ratio of n-octylamine and tetraethyl orthosilicate is 0.01, and the mixture is stirred for 4-5 hours until a transparent and stable sol is obtained, and the viscosity of the solution is 50-150 mPa·s. Grind the surface of the concrete to be treated with a grinding wheel, remove the floating slurry on the surface, rinse it with water, dry it naturally, and coat the organi...

Embodiment 2

[0038] At room temperature, mix ethyl orthosilicate with deionized water and ethanol in a molar ratio of 1:4:4, and gradually add hydroxyl-terminated polydimethylsiloxane and polysiloxane under the action of magnetic stirring The mass ratio to ethyl orthosilicate was 1, and stirred for 20 minutes. Under magnetic stirring, gradually add coupling agent KH560 to modify and prepare an organic-inorganic composite protective coating. The mass ratio of coupling agent to tetraethyl orthosilicate is 1, stir for 20 minutes until the solution is uniform, and then slowly add catalyst n-octylamine drop by drop. The molar ratio of n-octylamine and tetraethyl orthosilicate is 0.02, stirred for 4-5 hours to a transparent and stable sol, and the viscosity of the solution is 50-150 mPa·s. Grind the surface of the concrete to be treated with a grinding wheel, remove the floating slurry on the surface, rinse it with water, dry it naturally, and coat the organic-inorganic composite protective coat...

Embodiment 3

[0040] At room temperature, mix ethyl orthosilicate with deionized water and ethanol at a molar ratio of 1:5:5, and gradually add hydroxyl-terminated polydimethylsiloxane and polysiloxane under the action of magnetic stirring The mass ratio to ethyl orthosilicate was 1, and stirred for 20 minutes. Under magnetic stirring, gradually add coupling agent KH560 to modify and prepare an organic-inorganic composite protective coating. The mass ratio of coupling agent to tetraethyl orthosilicate is 1.5, stir for 20 minutes until the solution is uniform, and then slowly add catalyst n-octylamine drop by drop. The molar ratio of n-octylamine to tetraethyl orthosilicate is 0.03, stirred for 4-5 hours to a transparent and stable sol, and the viscosity of the solution is 50-150 mPa·s. Grind the surface of the concrete to be treated with a grinding wheel, remove the floating slurry on the surface, rinse it with water, dry it naturally, and coat the organic-inorganic composite protective coa...

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
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing an organic and inorganic composite concrete protective coating modified by coupling agents. The method includes steps of (1), preparing tetraethyl orthosilicate, deionized water and ethyl alcohol according to a molar ratio of 1:(3-6):(3-6) at the room temperature, gradually adding terminal hydroxyl polydimethylsiloxane into the tetraethyl orthosilicate, the deionized water and the ethyl alcohol under magnetic stirring conditions and stirring the terminal hydroxyl polydimethylsiloxane, the tetraethyl orthosilicate, the deionized water and the ethylalcohol for 15-25 min to obtain mixtures; (2), gradually adding the coupling agents into the mixtures at the temperature of 25 DEG C under magnetic stirring conditions, carrying out modification to prepare organic and inorganic composite protective coatings, stirring the organic and inorganic composite protective coatings until solution is uniform, then dropwise adding a catalyst n-octylamine into the solution and stirring the solution and the catalyst n-octylamine until transparent stable sol is obtained. The method has the advantages that protective coatings can be prepared by the aid of sol-gel processes, the method is simple, economical and practical and is low in cost, the organic and inorganic composite concrete protective coating is high in adhesion and corrosion resistance, outstanding in waterproof performance, good in weather resistance and applicable to civil waterproof engineering and waterproof engineering such as tunnel and ocean engineering, and the like.

Description

technical field [0001] The invention relates to the field of waterproof coatings, in particular to an organic-inorganic composite concrete protective coating modified by a coupling agent and a preparation method and application thereof. Background technique [0002] Since the 21st century, with the development of my country's marine economy, more and more marine engineering facilities have been constructed. However, the harsh environment along the coast has caused the durability of concrete to be damaged, and the safety and lifespan have been greatly reduced. If certain protective measures are not taken, it will cause huge waste of resources and economic losses. [0003] As we all know, seawater is highly corrosive, and various marine engineering facilities will inevitably be corroded by harsh marine environments, such as reinforced concrete structures. Reinforced concrete has been widely used in seaside structures. Due to the long-term immersion, erosion and impact of win...

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 Applications(China)
IPC IPC(8): C09D1/00C09D183/04C09D5/08C04B41/61
Inventor 李方贤巫殷伟余其俊韦江雄陈康卫
Owner SOUTH CHINA UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com