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Composite rebar corrosion inhibitor and preparation method thereof

A technology of composite steel bars and rust inhibitors, applied in the field of building materials, can solve the problems of concrete strength reduction, affecting concrete performance, and incompatibility, and achieve the effect of preventing corrosion

Inactive Publication Date: 2013-10-23
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, organic rust inhibitors are incompatible in terms of rust resistance of steel bars and affecting the performance of concrete; general organic rust inhibitors will affect the performance of concrete and reduce the strength of concrete

Method used

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  • Composite rebar corrosion inhibitor and preparation method thereof
  • Composite rebar corrosion inhibitor and preparation method thereof
  • Composite rebar corrosion inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 10kg of ethanolamine, 10kg of dicyclohexylamine, and 10kg of sodium benzoate, and add the above-mentioned raw materials into 70kg of water in turn, and stir evenly.

Embodiment 2

[0024] Weigh 20kg of N-methylethanolamine, 5kg of ethylenediamine, and 1kg of sodium benzoate, and add the above raw materials into 74kg of water in sequence, and stir evenly.

Embodiment 3

[0026] Weigh 10kg of N-methylethanolamine, 5kg of N,N-dihydroxyethylethylenediamine, 2kg of methylamine, and 5kg of sodium benzoate, and add the above raw materials into 78kg of water in sequence, and stir evenly.

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PUM

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Abstract

The invention discloses a composite rebar corrosion inhibitor and a preparation method thereof. The composite rebar corrosion inhibitor is prepared from the following components: 10-25% of amino alcohol, 2-10% of amine, 1-10% of sodium benzoate, and the balance of water based on the mass percent of the materials, wherein the amino alcohol is one or more of cholamine, diethanol amine, triethanolamine, N-mono methyl ethanol amine, N,N-dimethylethanolamine, N-ethylethanolamine, N,N-diethyl ethylene diamine, tri-isopropanolamine, N-(2-ethoxy) ethanediamine, and N,N-dihydroxyethyl ethylene diamine; the amine is one or more of methylamine, dimethylamine, ethanediamine, phenylamine, benzene methanamine and dicyclohexylamine. The amino alcohol, the amine and the sodium benzoate weighed according to the mass ratio are orderly added to water to evenly agitate in preparation. The composite rebar corrosion inhibitor disclosed by the invention is good in corrosion inhibition effect, and free of adverse effects on performance of concrete.

Description

technical field [0001] The invention relates to a steel bar rust inhibitor, in particular to a composite steel bar rust inhibitor and a preparation method thereof; belonging to the field of building materials. Background technique [0002] The performance degradation and even failure of concrete structures caused by corrosion of steel bars in the chloride salt environment have become a major disaster that has been widely concerned and increasingly prominent all over the world. The damage caused by corrosion of steel bars in coastal projects in my country is also very serious. [0003] The ways to improve the durability of concrete structures under chloride salt environment include basic measures and additional measures. The basic measures are to use high-performance concrete and increase the thickness of the protective layer. Layer and steel bar rust inhibitor, etc., among which the use of steel bar rust inhibitor is one of the most widely used additional measures. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12C04B103/61
CPCC23F11/10C04B20/1018C04B2103/61C04B2111/26C23F11/141C23F11/142C04B32/02
Inventor 郭文瑛杨医博陈峭卉莫海鸿王恒昌梁松
Owner SOUTH CHINA UNIV OF TECH