Preparation method of methyl silicate aqueous nano antirust agent

Abstract

The invention designs a preparation method of an antirust agent and particularly relates to a preparation method of a methyl silicate aqueous nano antirust agent. The antirust agent is prepared from the following steps: preparing a nano methyl silicate homogenate by using nano methyl silicate and a 731A dispersing agent; and mixing and dispersing the nano methyl silicate homogenate, acrylic resin, DPnB, dibutyl phthalate, a thickener, a silicon sol, propylene glycol and water 500 to prepare the methyl silicate aqueous nano antirust agent. According to the methyl silicate aqueous nano antirust agent provided by the invention, the raw material methyl silicate is an inorganic / organic composite material which is prepared from silsesquioxane which is a byproduct methyl trichlorosilane hydrolysate in production of organic silicon, so that the raw material is low in price and easily available; the antirust agent is free of toxicity and pollution, has hydrophilic and lyophobic performances and relatively strong acid and alkali resistance and is an excellent water-based antirust additive.

Description

technical field [0001] The invention designs a preparation method of an antirust agent, specifically a preparation method of a methyl silicate water-based nano antirust agent. technical background [0002] Metal corrosion is a problem often encountered in production. Every year, tens of millions of tons of steel are scrapped due to rust in the world, causing serious economic losses. At present, anti-rust oil is mostly used for long-term storage and anti-rust of steel products, but the follow-up process needs to be degreased. The oil is not easy to decompose, and it is difficult to remove, and there is an environmental pollution problem caused by waste liquid discharge. With the increasing shortage of petroleum resources and the increasing awareness of environmental protection, the research on water-based rust inhibitors has attracted widespread attention at home and abroad. [0003] At present, the passivation technology of nitrite and chromate is mostly used in water-based...

AI Technical Summary

Problems solved by technology

[0003] At present, the passivation technology of nitrite and chromate is mostly used in water-based antirust agents. The products added with nitrite and chromate have obvious advantages such as low price, good effect and convenient use. Studies have shown that such The main raw material of the product is an indirect carcinogen, which is highly toxic and seriously pollutes the environment. Its use and discharge are strictly restricted. Therefore, the research on water-based rust inhibitors without nitrite is of great significance

In recent years, there have been some researches on the compound antirust agent of ethanolamine and acid, polyol ester antirust agent and self-assembled antirust agent on metal surface with organic matter as the main body, but most of them can only be used for antirust between processes and can replace antirust. Rust oil is widely used in production as a water-based anti-rust agent for long-term storage and anti-rust.