Efficient and environment-friendly oil-removing, rust-removing and descaling agent and preparation method thereof

Abstract

The invention provides an efficient and environment-friendly oil-removing, rust-removing and descaling agent and a preparation method thereof. The efficient and environment-friendly oil-removing, rust-removing and descaling agent is composed of following raw materials: 1-15% of hydroxyethylidene diphosphonic acid, 5-18% of citric acid, 8-25% of phosphoric acid, 4-18% of oxalic acid and 10-30% of nano oil-removing emulsifier. With the adoption of the efficient and environment-friendly oil-removing, rust-removing and descaling agent, various oil dirt, wax, oxides, oxide skins, welding spots, rust and the like can be completely cleaned; the treatment time is short and is rapider and more convenient; the efficient and environment-friendly oil-removing, rust-removing and descaling agent does not contain strong acids, strong alkalis and organic solvents and has low environmental pollution; the efficient and environment-friendly oil-removing, rust-removing and descaling agent has no stimulation and no damages on a human body and is safer and more reliable to use.

Description

Technical field [0001] The invention relates to a cleaning agent, in particular to a high-efficiency environmentally friendly degreasing, rust, and scale removal agent and a preparation method thereof. Background technique [0002] In the known technology, there are basically two traditional methods for removing oil and rust on the surface of metal materials and metal products. One is to manually clean the oil and use a knife or metal brush to remove the oil. Rust is not only labor-intensive, requires a lot of manpower, and is low in efficiency, but the rust dust caused by rust removal is flying everywhere, causing pollution to the surrounding environment. This method is only suitable for the pretreatment of metal surfaces with less serious oil stains and rust spots, but it is difficult to remove a large amount of oil stains and rust spots on the metal surface. Another method is to use the two cleaning procedures of strong alkali to remove oil and strong acid to remove rust. The...

AI Technical Summary

Problems solved by technology

[0002] In the known technology, there are basically two traditional methods for degreasing and derusting the surface of metal materials and metal products. One is to use manual cleaning of oil stains and scraping with a knife or metal brush. Rust is not only labor-intensive, requires a lot of manpower, and has low efficiency, but also rust dust caused by rust removal is flying everywhere, polluting the surrounding environment

This method is only suitable for the pretreatment of metal surfaces with less serious oil stains and rust spots, but it is difficult to remove a large amount of oil stains and rust spots on the metal surface

Another method is to use strong alkali to remove oil and strong acid to remove rust. The first method needs to build two operation pools, which takes up a lot of space; the second is troublesome cleaning, slow speed and low efficiency; Especially when cleaning, you must be careful, because the use of strong alkali and strong acid is harmful to the human body and there are hidden dangers of unsafety

In particular, the use of high-strength hydrochloric acid has a sour taste of harmful toxins, which has a strong sense of stimulation to the human body, and the acid mist produced seriously pollutes the air; fourth, the discharge of waste acid water seriously pollutes water resources, affecting and destroying the reliability of water resources. sustainable development

Fifth, the metal surface cleaned by high-concentration hydrochloric acid can produce secondary oxidation and rust after staying in the atmosphere for 3 minutes, so it can only play a temporary corrosion inhibition effect

Such as: the patent announcement number is a kind of degreasing and derusting agent disclosed by CN86407238A, and its used raw material is composed of: aluminum powder, sodium hydroxide, hexamethylenetetramine, polyoxyethylene fatty alcohol ether, ethylene oxide, Water, phosphoric acid, and formulated according to a certain ratio. Although this kind of degreasing and derusting agent has high efficiency, because the ethylene oxide in the raw material is unstable and toxic, the production process is unsafe and harmful to the environment. more serious pollution

And the production cost is high

The announcement number is CN1004429A disclosed a kind of derusting passivation agent, is to be formed by mixing phosphoric acid, zinc dihydrogen phosphate, oxalic acid, zinc nitrate, polyethylene glycol octyl alkyl ether, water according to a certain proportion, but because ethers The nature of the substance is unstable, so the storage time of the product is short and it is easy to fail

At the same time, its rust removal effect is not very ideal

"Science and Technology Daily" reported on August 7, 2000 that a company in Beijing developed the "MX-1" water-based metal rust remover and rust remover. It is also necessary to brush with a brush, and then apply new anti-rust oil on the metal surface to achieve the rust removal effect, which is very troublesome

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