Cobaltocene cation-based waterborne polyurethane, corrosion inhibitor system and preparation method thereof

Abstract

The invention relates to cobaltocene cation-based aqueous polyurethane, a corrosion inhibitor system and a preparation method thereof. An active functional group, namely alcohol hydroxyl, is introduced to cobaltocene cation by taking a triazole ring as a connecting group, and then the cobaltocene cation-based aqueous polyurethane is obtained through simple and convenient step-by-step addition polymerization reaction and ion exchange reaction, thereby realizing low-cost synthesis and high-efficiency polymerization. The structure of the target cobaltocene cation-based aqueous polyurethane has many advantages of inorganic, organic and polymer corrosion inhibitors compared with corrosion inhibitors commonly used at present. The product of the cobaltocene cation-based aqueous polyurethane can be used as a corrosion inhibitor to slow down the corrosion of hydrochloric acid to iron and steel products in practical applications such as pickling.

Description

technical field [0001] The invention belongs to the field of chemical anticorrosion, and relates to a cobaltocene-based waterborne polyurethane, a corrosion inhibitor system and a preparation method. Background technique [0002] Metals and their alloys are one of the most important structural materials, and their applications range from daily life to electrical and mechanical manufacturing to construction, military and other fields. With the rapid development of my country's economy, the domestic demand for metal materials and steel is also rising rapidly. However, metal materials such as iron and steel, which are industrial skeletons, have serious corrosion problems. For example, in the shipping industry, the exterior of the hull is exposed to severe corrosion if it is soaked in seawater for a long time; various transportation pipelines in the petrochemical industry also face serious corrosion problems due to long-term exposure to some chemicals. Corrosion in a broad sen...

AI Technical Summary

Problems solved by technology

Some inorganic heavy metal salt corrosion inhibitors have good corrosion inhibition effect, but their discharge will cause pollution to the environment; polymer corrosion inhibitors are easy to form a single or multi-layer dense protective film on the surface of the substrate, so they are relatively low-molecular corrosion inhibitors. It has the advantages of high efficiency, durability, and environmental protection, and has become one of the research hotspots in the field of corrosion inhibitors.

Images