A Low-Cost and High-Performance Rust Converter Suitable for Ocean Vessel Hull Treatment

摘要

When ships are repaired, rust on hulls need to be removed. However,rntraditional rust removing methods such as grinding by hand, shovelingrnand sand blast and so on are very time-consuming. This paper presentsrna rust converter suitable for ocean vessel hull treatment, whosernformulation is based on polyphosphoric acid and tannic acid. In order tornimprove the performance of the product, active agent, catalytic agent,rncorrosion inhibitor, penetrating agent and wetting agent, etc., are added.rnSome results of accelerating experiment such as the A. C. impedancernexperiment are also presented, which demonstrate the high performancernof the product. All ingredients in the product are cheap, easilyrnaccessible, and environment-friendly.