Introduction of impregnation rust inhibitor (waterborne rust inhibitor)

In the process of production, storage and transportation, steel will produce rust in a short period of time without anti-rust treatment, which will adversely affect the appearance and performance of the finished steel. The serious corrosion will even cause the steel to be scrapped. Rusting of steel has caused huge losses to the national economy. The annual steel scrapped by rust in the world amounts to tens of millions of tons. The economic loss caused by corrosion in China in 2000 reached 500 billion yuan. Therefore, the research on anti-rust liquid on steel materials Protection plays an important role. Most of the metal water-based anti-rust liquids used in the past contain sodium nitrite. The nitrite-based water-based anti-rust liquid has the advantages of low cost, good effect, convenient use and easy removal, so it is widely used, but it is proved Nitrite can be converted into carcinogens and its use and emissions are severely restricted. Due to environmental protection and other reasons, people have been working on non-nitrite environmentally friendly water-based rust inhibitors for many years and made great progress. Although the anti-rust oil has good rust resistance, it has high cost and brings difficulties to the post-treatment of steel products. In recent years, the research on environmentally friendly water-based rust inhibitors has received extensive attention at home and abroad, especially the development of long-acting water-based rust inhibitors has become a trend.

Since 2010, nanotechnology has also been applied to water-based anti-rust technology, which has opened up a broad prospect for the research and application of anti-rust technology. Researchers extract high-efficiency, low-toxic rust inhibitors from natural plants, such as rice bran, mango skin, citrus peel, aloe leaf, pomegranate peel, reed, water lily, cork, rosin, etc., or extract rust inhibitors from industrial and agricultural by-products. And it is compounded and modified to improve the anti-rust performance, so that the waste can be turned into treasure and realize the full utilization of resources. The research and development and application of multi-functional water-based rust inhibitors are gradually becoming more and more popular. For example, degreasing and derusting "two in one", the products of degreasing, derusting and rust prevention are also increasing, and they pass through the oil layer. Emulsification, penetration and conversion of the rust layer, to protect the metal products. Research and development of water-based metal rust inhibitors with good rust resistance, stable properties, low price, reduced pollution, complete functions and convenient use should be the direction of scientific research workers in the future.