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

Anticorrosive coating material for reinforcing steel bars and coating method therefor

A technology for anti-corrosion coatings and steel bars, applied in anti-corrosion coatings, coatings and other directions, can solve the problems of weak adhesion between epoxy resin and concrete, inability to adapt to steel anti-corrosion, double the cost of double coatings, etc. Maintain good mechanical properties and densification performance

Active Publication Date: 2015-12-09
ZHEJIANG UNIV
View PDF5 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are still the following problems: 1. The adhesion between the epoxy resin of the outer layer and the concrete is still weak; 2. In order to ensure the bonding of the double-coating interface, sophisticated technical equipment support is required; 3. The double-coating is used Double the cost, poor economy
But its essence is a binder, which can be used for the repair of concrete damage, but there is a problem that the phosphate binder is easy to crack when it is under tension.
[0008] In summary, the existing anti-corrosion coating technology for steel bars can no longer adapt to the anti-corrosion of steel bars in concrete structures in high-corrosion environments. overriding method becomes an urgent need

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
  • Anticorrosive coating material for reinforcing steel bars and coating method therefor
  • Anticorrosive coating material for reinforcing steel bars and coating method therefor
  • Anticorrosive coating material for reinforcing steel bars and coating method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Pretreatment: Take a section of HRB335, HRB400 or HPB300 grade steel bar, use sandpaper to remove rust, then rinse the surface with 5% dilute sulfuric acid to remove rust, then rinse it with clean water, and dry it for later use.

[0033] Preparation of paint: pass glass powder through 300 mesh sieve, take 42 parts of sieved glass powder and 3.9 parts of clay, 23.2 parts of borax, 3.2 parts of zirconium dioxide, 0.7 parts of cobaltous oxide, 0.8 parts of nickel monoxide, 3.5 parts Add fluorspar and 0.4 parts of sodium carbonate into the mixing tank and mix with a stirring bar for 30 seconds, then place the mixing tank in a mixer for 3-5 minutes of dry mixing, and mix thoroughly to obtain mixture A. After dry mixing, add 22.3 parts of water to mixture A, wherein the mass ratio of mixture A to water is 2.5:1, stir it until it becomes a slurry, put it into a mixer for wet mixing for 5-7 minutes, and mix thoroughly The paint B was obtained, and the paint B was taken out and...

Embodiment 2

[0039] Pretreatment: Take a section of HRB335, HRB400 or HPB300 grade steel bar, use sandpaper to remove rust, then rinse the surface with 5% dilute sulfuric acid to remove rust, then rinse it with clean water, and dry it for later use.

[0040] Preparation of paint: Pass glass powder through a 300-mesh sieve, take 38.8 parts of sieved glass powder, 3.9 parts of clay, 26.4 parts of borax, 3.1 parts of zirconium dioxide, 0.7 parts of cobaltous oxide, 0.8 parts of nickel monoxide, 2.2 parts Fluorspar, 1.3 parts of barium oxide and 0.3 parts of sodium lignosulfonate are added to the mixing tank and mixed with a stirring bar for 30 seconds, then the mixing tank is placed in the mixer for 3-5 minutes of dry mixing, and fully mixed Mixture A is obtained. After dry mixing, add 22.5 parts of water to mixture A, wherein the mass ratio of mixture A to water is 2.5:1, stir it until it becomes a slurry, put it into a mixer for 5-7 minutes, and mix thoroughly The paint B was obtained, and...

Embodiment 3

[0045] Pretreatment: Take a section of HRB335, HRB400 or HPB300 grade steel bar, use sandpaper to remove rust, then rinse the surface with 5% dilute sulfuric acid to remove rust, then rinse it with clean water, and dry it for later use.

[0046] Preparation of paint: Pass glass powder through a 300-mesh sieve, take 43 parts of sieved glass powder, 3.8 parts of clay, 23.3 parts of borax, 2.3 parts of zirconium dioxide, 2.4 parts of tin oxide, 0.7 parts of cobaltous oxide, 0.8 parts of a Add nickel oxide, 0.8 parts of antimony trioxide, 1.1 parts of molybdenum trioxide, and 0.3 parts of sodium tripolyphosphate into the mixing tank and stir for 30 seconds with a stirring bar, then place the mixing tank in a mixer for dry mixing Mix well for 3-5 minutes to obtain Mixture A. After dry mixing, add 21.5 parts of water to mixture A, wherein the mass ratio of mixture A to water is 3:1, stir it until it becomes a slurry, put it into a mixer for wet mixing for 5-7 minutes, and mix thorou...

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 discloses an anticorrosive coating material for reinforcing steel bars. The anticorrosive coating material contains the following ingredients in parts by weight: 31-43 parts of glass powder, 1.3-4.1 parts of clay, 23-35 parts of borax, 2.7-7.4 parts of opacifier, 1.3-3.5 parts of adhesion agent and 0.2-2.4 parts of electrolyte, wherein the glass powder is sieved with a sieve with the pore size of 300-500 meshes. A coating method for the anticorrosive coating material for the reinforcing steel bars is further disclosed and comprises the following steps: (1) carrying out dry mixing; (2) carrying out wet mixing; (3) carrying out pretreatment; (4) carrying out coating; (5) carrying out baking; (6) carrying out sintering; and (7) carrying out normal-temperature cooling. The anticorrosive coating material is high in strength, good in compactness and good in corrosion resistance and has a strong bonding force with concrete, and meanwhile, the mechanical properties of the reinforcing steel bars are maintained.

Description

technical field [0001] The invention belongs to the field of metal materials used in concrete structures, and in particular relates to a reinforcement anticorrosion paint and a coating method thereof. Background technique [0002] Entering the 21st century, my country has entered the era of great coastal economic development. It is foreseeable that a large number of seaport terminals, cross-sea bridges, tunnels, offshore oil production platforms, etc. will use reinforced concrete structures in the future. Corrosion of steel bars in concrete structures has become a major factor affecting the durability of reinforced concrete. Therefore, using new materials and new technologies to solve the problem of steel corrosion is one of the most urgent tasks faced by scientific and technological workers in the field of civil engineering. [0003] With the continuous deepening of the research on the corrosion and protection mechanism of steel bars in reinforced concrete structures, the ...

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): C09D1/00C09D5/08C09D7/12
Inventor 闫东明刘毅张洛栋高海波
Owner ZHEJIANG UNIV
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