Degreasing agent for cleaning oil stains on surface of steel and preparation method thereof

Abstract

The invention discloses a degreasing agent for cleaning oil stains on the surface of steel and a preparation method thereof. Medicaments are added in water; and the medicaments comprises the followingcomponents in percentage by weight: 13.5-15.5% of alpha-olefin sodium sulfonate, 14.5-16.5% of fatty alcohol-polyoxyethylene ether, 22-24% of pentasodium phosphate, 1-2% of carboxymethylcellulose, 24-26% of sodium sulfate, 15-16% of potassium hydroxide, and 4.5-5.5% of sodium silicate. The degreasing agent is compounded by AEO and AOS, can achieve an efficient decontamination effect, and is excellent in oil stain and other inroagnic impurity removing effect. The degreasing agent is efficient in steel plate cleaning effect, can meet quick production requirements in modern coating workshops, contains no chromium, nitrite and strong irritating smell, is low in component poison, green and environment-friendly, and can be widely applied to cleaning of the oil stains on the surface of the steel.

Description

technical field [0001] The invention relates to a cleaning agent for steel plates, in particular to a degreasing agent for cleaning oil stains on steel surfaces and a preparation method thereof. Background technique [0002] In order to ensure the quality of car paint, before the car body is painted, the car body is subjected to phosphating surface treatment. In order to ensure that the steel plate produced by the steel factory has a certain corrosion resistance before use, the surface of the steel plate is often oiled. Residual oil stains on the surface of the substrate will seriously affect the formation of the phosphating film, or even fail to form a film, which will deteriorate the corrosion resistance of the phosphating film and the adhesion performance of the electrophoretic paint film in the later stage, affect the decorativeness of the coating, and the coating is easy to foam peel off. At the same time, in order to meet the requirements of rapid production in the p...

AI Technical Summary

Problems solved by technology

[0003] Traditional degreasing agents mainly include the following categories: (1) Organic solvents, such as N,N-dimethylformamide (DMF), dimethylacetamide (DMAc), polyoxyethylene octylphenol ether, etc., these Organic solvents have a good cleaning effect on soluble oil stains, but it is difficult to remove inorganic particles, metal particles, etc., and generally have strong volatility, strong pungent odor, are not easy to degrade, are toxic and harmful, and are extremely harmful to people, which is not conducive to on-site operations surroundings

(2) Alkali, such as sodium hydroxide, trisodium phosphate, sodium silicate, etc., degreases through saponification, so the treatment effect on non-saponifiable oil is poor, and improper alkalinity control during use may cause metal surface corrosion , which seriously affects the continuous production of the painting workshop; and trisodium phosphate can seriously damage the mucous membranes, upper respiratory tract, eyes and skin

(3) Emulsion, which can remove all kinds of oil stains on the metal surface, has a good cleaning effect; but generally has poor stability and cannot be stored for a long time. It needs to be stirred to maintain dispersion during use, which causes inconvenient use and increases the cost

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