A kind of hydrophilic metal pickling corrosion inhibitor and its application

Abstract

The invention provides a hydrophilic metal acid pickling corrosion inhibitor and application thereof, and belongs to the field of metal acid pickling corrosion and protection. The corrosion inhibitor is provided with multiple hydrophilic groups and has the beneficial effect of good hydrophilia. The hydrophilic metal acid pickling corrosion inhibitor can be used for metal acid pickling corrosion, the application scope is wide, and the good corrosion inhibition is achieved. Meanwhile, the corrosion inhibitor can better bear changes of washing conditions, and the beneficial effect of long continuous action time is achieved particularly. In addition, the using amount of the corrosion inhibitor is small, the corrosion inhibition efficiency is high, efficiency is high, the performance is stable, the high application value is achieved, and the hydrophilic metal acid pickling corrosion inhibitor is worthy of large-scale application and popularization.

Description

technical field [0001] The invention relates to the field of protection, in particular to the field of metal pickling corrosion and protection, in particular to a hydrophilic metal pickling corrosion inhibitor and its application. The present invention adopts hydrophilic 5-substituent benzodiazazole-2-thioglycolate as a new hydrophilic metal corrosion inhibitor, which has the characteristics of good hydrophilicity, high efficiency and stable performance. wide and has good application prospects. Background technique [0002] As we all know, metal materials are the most widely used engineering materials in modern society, and they play an extremely important role in various fields of national economy. However, from daily life to production practice, from cutting-edge science and technology to national defense industry, wherever metal materials are used, there are metal corrosion problems to varying degrees. The corrosion of metal materials has seriously affected and restricte...

AI Technical Summary

Problems solved by technology

For example: the corrosion inhibition effect of amine corrosion inhibitors in the case of a single component is not ideal, and they need to be compounded before they can be applied; most of the pyridine derivatives and amine corrosion inhibitors have a pungent smell; the thiourea derivatives The corrosion inhibition effect is greatly affected by the substituent, and the concentration of the corrosion inhibitor has an optimal range; the application performance of natural rosin and its derivatives is poor, and it usually needs to be modified by different methods before it can be widely used; most of them contain benzene rings. The poor hydrophilicity of organic corrosion inhibitors is not conducive to showing excellent corrosion inhibition; some reported corrosion inhibitors have certain toxicity, which is not conducive to environmental protection and the sustainable development of the national economy.