Bicyclo-imidazoline laurate, synthesis method therefor and application of bicyclo-imidazoline laurate

Abstract

The invention discloses bicyclo-imidazoline laurate. The bicyclo-imidazoline laurate has a symmetrical molecular structure, comprises two imidazoline heterocycles and two alkyl long chains of lauric acid, and thus, plenty and dense electronic clouds and good hydrophobicity can be provided. The invention further discloses a bicyclo-imidazoline laurate synthesis method, which is low in raw materialcost and high in reaction yield and can achieve industrial production. The invention further discloses an application of the bicyclo-imidazoline laurate. The electrotransport type cationic bicyclo-imidazoline laurate is obtained through activating bicyclo-imidazoline laurate and is applied to the rusting prevention of reinforced concrete.

Description

technical field [0001] The invention relates to the technical field of rust inhibitors, in particular to a bicyclic imidazoline laurate and its synthesis method and application. Background technique [0002] The durability of concrete structures under the chloride salt environment is a major problem bothering the world. For a long time, most of the damage to reinforced concrete structures is caused by the corrosion of steel bars, and 30-40% of concrete structures need to be repaired due to steel bar corrosion, and the economic losses caused by the corrosion of concrete and steel bars are huge. There are a large number of cases of corrosion damage to steel bars in seaports, docks, coastal facilities, and hydraulic projects in my country, most of which do not meet the requirements of the design life, and the corrosion losses are heavy. It can be seen that it is of great social and economic value to carry out the research on the prevention and control of steel corrosion, espec...

AI Technical Summary

Problems solved by technology

However, the current research on electromigration rust inhibitors is still in its infancy, and many problems have not been resolved.

Existing concrete electromigration rust inhibitors are mainly amines or alcohol amine organic compounds, and there are few studies on other types of compounds. Alcohol amine organic compounds are very mature and can be purchased in the market, but the synthesis purity is low, only About 40%, the anti-rust effect is not good when used

The main reason is that the cations dissociated from alcohol amines in the aqueous solution are relatively small, so the electromigration ability is weak, and they cannot quickly and fully penetrate the surface of the steel bar.

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