The traditional VCI gas phase antirust packaging material is to spray the VCI gas phase antirust agent on the neutral base paper and then combine it on the woven cloth through the drying film to make the antirust packaging paper. This technology originated from the period of World War II. It was used for antirust packaging materials of guns and firearms. The United States was the first to study antirust agent-related technologies. Currently, Corte Corporation of the United States is the world leader in the field of gas-phase antirust.
At present, there are more than 10 series and hundreds of varieties of gas-phase antirust materials in the form of antirust powder, pill, Aqua, the antirust paper, antirust film, etc, it has been widely used in civil and industrial fields, greatly reducing economic losses caused by metal corrosion.
There are as many as two to three hundred compounds with gas-phase corrosion inhibition that have been discovered. These compounds are mainly amine salts of inorganic acids, amine salts of organic acids, esters, nitro compounds, base amine salts, and heterocyclic compounds, etc.
When using, it is necessary to correctly select suitable vapor phase corrosion inhibitors according to different protected metals.
Generally, it can be divided into the following types:
1) gas phase corrosion inhibitor for steel. The common characteristic of gas phase corrosion inhibitor of steel is that the cation of inorganic ammonia or organic amine plays an antirust role.
2) non-ferrous metal vapor phase corrosion inhibitor. Chromate of organic amine, phosphate of organic amine, organic acid ester, organic phenol and its derivatives, heterocycle compounds, etc. should be selected according to different metal types.
3) mixed gas phase corrosion inhibitor. A mixed Gas-phase corrosion inhibitor is also a kind of anti-rust material of steel. It is mixed with various compounds. After corrosion and volatilization, it reacts with water and oxygen in the air and generates ammonia, the purpose of rust prevention of steel is achieved through ammonia.
Quote-[1] Chen Qun. Research on the application of VCI plastic anti-rust film in cold-rolled steel coil packaging [J]. Mechanical Engineer, 20105,000 (004): 171-171,172
