Steel-bar rust inhibitor based on radish extract, and preparation method and application thereof

Abstract

The invention discloses a steel-bar rust inhibitor based on a radish extract, and a preparation method and an application thereof. The steel-bar rust inhibitor comprises the following raw materials bymass: 98% to 100% of the radish extract and 0% to 2% of an anti-corrosion additive. Compared with the prior art, the steel-bar rust inhibitor provided by the invention has the following advantages: raw materials are green and environmentally-friendly, have low carbon and low cost, are widely-available and have high yield, so industrial production can be easily realized; the traditional disadvantages of pollution of nitrite to the environment and complicated preparation process of an organic rust inhibitor are avoided; rust-inhibiting components contained in a raw material namely the radish extract is utilized to generate interaction with a steel bar, so an adsorption film is formed on the surface of the steel bar, and direct erosion damage of chlorine ions to the steel bar is inhibited; the rust inhibitor prepared by using the method provided by the invention has excellent rust-inhibiting effect; and the steel-bar rust inhibitor has simple preparation method and application method andbroad prospects.

Description

technical field [0001] The invention relates to the field of rust inhibitors for steel bars, in particular to a rust inhibitor for steel bars based on radish extract, a preparation method and application. Background technique [0002] Reinforced concrete is an important engineering structure. In high-chloride salt environments such as coastal environments, winter deicing salts, and western saline-alkali lands, reinforced concrete faces the risk of corrosion and damage from chloride salts. Chloride ions migrate to the surface of steel bars through migration, penetration, convective diffusion, and capillary action through concrete pores. When the critical chloride ion concentration is reached, the corrosion reaction of steel bars is accelerated, and the resulting expansive corrosion products will cause internal stress in the structure. Crack along the tendons. Therefore, chloride corrosion damage and improving the service life of reinforced concrete structures are currently i...

AI Technical Summary

Problems solved by technology

However, there are often many problems to be solved in the existing rust inhibitors, such as strong oxidation anodic rust inhibitors represented by nitrite, although the rust inhibitor effect is remarkable, it is very harmful to humans and the environment, and has been approved by the European Union. Banned in developed countries

Amino alcohol-based organic rust inhibitors have low rust inhibition efficiency and are complex to prepare and costly

Images