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Rusty protective coating with rust conversion function and preparation method

A protective coating and rust conversion technology, applied in coatings, anti-corrosion coatings, etc., can solve the problems of complex preparation process and field engineering application limitations, and achieve the effect of simple preparation method, excellent anchoring performance and long-term stability

Active Publication Date: 2021-02-02
YANTAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its disadvantage is that the preparation process is more complicated, and there are certain limitations in the actual field engineering application.

Method used

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  • Rusty protective coating with rust conversion function and preparation method
  • Rusty protective coating with rust conversion function and preparation method
  • Rusty protective coating with rust conversion function and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Dosing according to the following weight: acidic resin emulsion with a solid content of 60%, defoamer with a mass of 1‰ of the acidic resin emulsion, wetting agent with a mass of 1‰ of the acidic resin emulsion, and thickener with a mass of 1‰ of the acidic resin emulsion.

[0032] When preparing the rust protective coating, proceed as follows:

[0033] 1) Weigh according to the parts by weight of each component;

[0034] 2) Add coating additives such as defoamer, wetting agent and thickener to the acidic resin emulsion in turn. That is, the rust-carrying protective paint is obtained.

Embodiment 2

[0036] Solid content is 90 parts of the acidic resin emulsion of 60%, 10 parts of rust conversion agent; The defoamer of acidic resin emulsion and rust conversion agent gross mass 1‰, the wetting agent of acidic resin emulsion and rust conversion agent gross mass 1‰ and A thickener with a total mass of 1‰ of acidic resin emulsion and rust converting agent.

[0037] Wherein the rust converting agent is prepared from raw materials in the following mass ratios: according to the mass parts, by 1 part of phosphoric acid, 1 part of tannic acid, 5 parts of citric acid, 5 parts of benzoic acid, 5 parts of n-octanoic acid, 5 parts of ethanol, 5 parts of Parts of sodium secondary alkyl sulfonate, 5 parts of alcohol amine compounds and 10 parts of deionized water.

[0038] Wherein, the mass concentration of phosphoric acid is 25%, the mass concentration of tannic acid is 55%, the mass concentration of citric acid is 50%, the mass concentration of benzoic acid is 45%, and the mass concent...

Embodiment 3

[0045] Solid content is 80 parts of the acidic resin emulsion of 60%, 20 parts of rust conversion agent; The defoamer of acidic resin emulsion and rust conversion agent gross mass 1‰, the wetting agent of acidic resin emulsion and rust conversion agent gross mass 1‰ and A thickener with a total mass of 1‰ of acidic resin emulsion and rust converting agent.

[0046] The rust converting agent is prepared from raw materials in the following proportions: 5 parts of phosphoric acid, 5 parts of tannic acid, 10 parts of citric acid, 10 parts of benzoic acid, 15 parts of n-octanoic acid, 10 parts of ethanol, 10 parts of secondary alkylsulfonate Sodium acid sodium, 15 parts of alcohol amine compounds and 20 parts of deionized water.

[0047] Wherein, the mass concentration of phosphoric acid is 30%, the mass concentration of tannic acid is 50%, the mass concentration of citric acid is 40%, the mass concentration of benzoic acid is 50%, and the mass concentration of n-octanoic acid is 60%...

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Abstract

The invention relates to a rusty protective coating with a rust conversion function and a preparation method. The rusty protective coating comprises 10-40 parts of a rust conversion agent, 60-90 partsof an acidic resin emulsion, an antifoaming agent accounting for 0.1-0.5% of the total mass of the acidic resin emulsion and the rust conversion agent, a thickening agent accounting for 0.1-0.5% of the total mass of the acidic resin emulsion and the rust conversion agent, and a wetting agent accounting for 0.1-0.5% of the total mass of the acidic resin emulsion and the rust conversion agent. Therusted protective coating with the rust conversion function is uniformly brushed on the surface of a rusted reinforcing steel bar, a rust layer can be converted and dissolved to generate a polymer protective film under the condition of normal temperature, the utilization rate of the reinforcing steel bar is increased by effectively converting the rust layer, the bonding and anchoring performance of the coating and concrete is excellent when a reinforced concrete structure is poured again, and an anti-rust action is achieved without affecting the performance of the concrete. The rusty protective coating has the characteristics of environmental protection, low cost, strong adhesive force, high corrosion resistance and the like.

Description

technical field [0001] The invention relates to a protective coating material with rust, in particular to a long-acting polymer protective coating with rust conversion function. The invention also relates to a method for preparing the protective coating. Background technique [0002] In the general atmospheric environment, the reduction of concrete alkalinity caused by carbonization is the main reason for the corrosion of steel bars in concrete. Concrete, when the surface of the steel bar reaches a certain concentration, even if the alkalinity of the concrete does not decrease, the steel bar will rust. Due to the uncertainty in the transportation and construction process, corrosion products have been produced on the surface of the steel bar before pouring, which significantly reduces the mechanical properties of the steel bar, resulting in a decrease in the safety and durability of the building structure. The time used also affects the project investment benefit and the ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D201/00C09D5/08
CPCC09D201/00C09D5/08C08K2003/329C08K2201/014C08K13/02C08K3/32C08K5/092C08K5/09C08K5/42C08K5/17
Inventor 刘志勇陈阳李世宇孙德勇钱百惠
Owner YANTAI UNIV
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