Method for preparing release-type metal vapour-phase rust preventative

Abstract

The invention relates to a method for preparing environment-friendly release-type metal vapour-phase rust preventative. By means of the effect that cyclodextrin can well include and slowly release the medicament, the medicament includes the active ingredients in vapour-phase rust preventative in cavity of beta-cyclodextrin or a derivative of the beta-cyclodextrin. The mass ratio of the used beta-cyclodextrin or the derivative of the beta-cyclodextrin to the metal vapour-phase rust preventative is 1-2:1. The product can be made into powder, liquid or tablets, directly used for metal rust prevention and particularly used for manufacturing of anti-rust papers and plastic anti-rust films. The product has the following advantages that: 1, the product is safe, environment-friendly and convenient; 2, the product has long-acting and slow-release effect and the rust protection time can be greatly prolonged; and 3, the product can improve the stability and the heat-bearing capacity for the rust preventative and is particularly suitable for the process for manufacturing the anti-rust papers and the plastic anti-rust films.

Description

technical field [0001] The invention relates to a preparation method of an antirust agent, in particular to a preparation method of a slow-release metal vapor phase antirust agent. Background technique [0002] Metal is the most important structural material in modern machinery industry, national defense industry and other departments. It is easily corroded by the chemical and electrochemical effects of the external environment. Atmospheric corrosion is the most widespread kind of corrosion, and the loss caused by it accounts for more than half of the total corrosion loss. According to reports, China's annual economic loss due to metal corrosion is about 280 billion yuan. For this reason, people adopt various methods to protect metal products, such as coating protective sealing method, desiccant method, vacuum antirust sealing method, inert gas protection method and gas phase antirust method, etc. [0003] A lot of practice has proved that vapor phase antirust packaging is...

AI Technical Summary

Problems solved by technology

However, in reality, the situation that the anti-rust space cannot be completely sealed exists completely, so the anti-rust failure is often caused, or new anti-rust agents need to be replenished regularly, which increases the cost of anti-rust

Especially the antirust agent used for vapor phase antirust paper must be dissolved into a solution and then dried after being coated on the paper. At this time, the usual antirust agent will be volatilized and decomposed due to high temperature, and part of the antirust function will be lost.