Organosilicon concrete protectant and preparation method thereof

A technology for concrete and protective agent, applied in the field of silicone concrete protective agent and its preparation, can solve the problems of bubbling of protective agent coating, small molecular structure, peeling off, etc. cracked effect

Inactive Publication Date: 2010-09-22
JINGZHOU JIANGHAN FINE CHEM
View PDF0 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of small molecular structure, strong permeability, which can effectively penetrate into the interior of concrete for 5-10mm, and react with the water absorbed by concrete to quickly cross-link and polymerize into macromolecular siloxane, which has good Waterproof, air permeability, permeability, and long-term performance; to solve the problem that the existing concrete protective agent uses a macromolecular organic coating film on the surface. When the concrete is subjected to high temperature, the surface pores are blocked by macromolecular organic substances, resulting in the protective agent coating. Organosilicon concrete protective agent with problems of bubbling, cracking, peeling, peeling and loss of protective effect and preparation method thereof

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 13.5 kilograms of concentrated hydrochloric acid (mass fraction 35%) and 32.4 kilograms of distilled water were mixed uniformly to make a mixed solution of concentrated hydrochloric acid and distilled water for use. In the reactor with heating, stirring and reflux devices, add 6.8 kg of methyl propyl diethoxysilane, 13.5 kg of n-propyl triethoxy, 13.5 kg of long chain alkyl triethoxy silane, 6.8 kilograms of tetraethoxysilane and 13.5 kilograms of ethanol are heated up. When the temperature rises to 75°C, slowly drop the mixture of concentrated hydrochloric acid and distilled water into the reactor, stir rapidly at a speed of 150 rpm, and react for 6 to 8 hours; after the stirring reaction is completed, evaporate the solvent under reduced pressure The ethanol and the ethanol produced by the reaction are cooled to below 40° C. with tap water, and then subjected to suction filtration to obtain an alkylsilane oligomer.

[0037] Add 15 kg of alkylsilane oligomers, 3 kg of ...

Embodiment 2

[0039] 13.5 kilograms of concentrated hydrochloric acid (mass fraction 35%) and 32.4 kilograms of distilled water were mixed uniformly to make a mixed solution of concentrated hydrochloric acid and distilled water for use. In the reactor with heating, stirring and reflux devices, add 6.8 kg of methyl propyl diethoxysilane, 13.5 kg of n-propyl triethoxy, 13.5 kg of long chain alkyl triethoxy silane, 6.8 kilograms of tetraethoxysilane and 13.5 kilograms of ethanol are heated and heated; when the temperature rises to 75 ° C, the mixed solution of concentrated hydrochloric acid and distilled water is slowly added dropwise to the reactor, and the speed is stirred at 150 rpm. 6-8 hours; after the stirring reaction is completed, the solvent ethanol and the ethanol produced by the reaction are evaporated under reduced pressure, cooled to below 40°C with tap water, and then subjected to suction filtration to obtain an alkylsilane oligomer.

[0040] Add 22 kg of alkylsilane oligomers, 6...

Embodiment 3

[0042] 13.5 kilograms of concentrated hydrochloric acid (mass fraction 35%) and 32.4 kilograms of distilled water were mixed uniformly to make a mixed solution of concentrated hydrochloric acid and distilled water for use. In the reactor with heating, stirring and reflux devices, add 6.8 kg of methyl propyl diethoxysilane, 13.5 kg of n-propyl triethoxy, 13.5 kg of long chain alkyl triethoxy silane, 6.8 kilograms of tetraethoxysilane and 13.5 kilograms of ethanol are heated and heated; when the temperature rises to 75 ° C, the mixed solution of concentrated hydrochloric acid and distilled water is slowly added dropwise to the reactor, and the speed is stirred at 150 rpm. 6-8 hours; after the stirring reaction is completed, the solvent ethanol and the ethanol produced by the reaction are evaporated under reduced pressure, cooled to below 40°C with tap water, and then subjected to suction filtration to obtain an alkylsilane oligomer.

[0043] Add 20 kg of alkylsilane oligomers, 5 k...

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

No PUM Login to view more

Abstract

The invention relates to an organosilicon concrete protectant and a preparation method thereof, and belongs to the technical field of concrete additives. The organosilicon concrete protectant is prepared by the following steps of: adding an alkyl silane oligomer, an emulsifying agent, an amino silane tackifier and water into a mixer, stirring at the temperature of between 50 and 70 DEG C for 2 to 4 hours, and cooling to normal temperature. Because the alkyl silane oligomer has small molecular structure and strong permeability, the alkyl silane oligomer can effectively permeate concrete and is quickly cross-linked with moisture absorbed by the concrete into macromolecular siloxane, capillaries and pores in the concrete are not blocked, and air and steam can freely enter and exit the concrete structure; therefore, the concrete has good hydrophobicity and air permeability. The organosilicon concrete protectant solves the problems that the conventional concrete protectant forms a macromolecular organic coating film on the surface, and when the concrete is subjected to high temperature, the protectant coating is easy to bubble, crack, peel and fall off. The service life of the concrete material is greatly improved.

Description

Technical field: [0001] The invention relates to an organosilicon concrete protective agent and a preparation method thereof, belonging to the technical field of concrete additive preparations. Background technique: [0002] Concrete is a porous material. There are capillaries, pores and air bubbles of different sizes inside it, which can absorb a large amount of external air and water. If exposed to harsh environments such as air pollution, ultraviolet rays, and acid rain for a long time, it is easy to It is damaged by external environmental erosion, so the protective treatment of concrete has attracted more and more attention. [0003] At present, the existing domestic concrete protective agents usually include paint, ointment, asphalt, etc. The protective principle of this type of protective agent is to apply a layer of the above-mentioned protective agent with a certain thickness on the concrete surface to form macromolecules on the concrete surface. The organic coating...

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): C04B41/49
CPCC04B2111/00086C04B2111/28C04B2111/27C04B2111/2038C04B2111/00267C04B40/0046C04B2103/60C04B2111/343
Inventor 阮少阳简永强甘书官尹超
Owner JINGZHOU JIANGHAN FINE CHEM
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