Modified cerium dioxide acid and alkali-resistant type strippable high molecular anti-rust film

Abstract

The invention discloses a modified cerium dioxide acid and alkali-resistant type strippable high molecular anti-rust film, which is prepared from the following raw materials including aluminum isopropoxide, a silane coupling agent KH792, tetraethoxysilane, sorbitan trioleate, polyglycol, methylvinyldiethoxysilane, polyvinyl alcohol, borax, cerium dioxide, oleic acid, a silane coupling agent KH560, polyetheramine, acrylamide, trolamine, benzotriazol, para-phenylene diamine, sodium benzoate, sodium dodecyl sulfate, a proper amount of polyoxyethylene fatty acid, a proper amount of nitric acid, a proper amount of hydrochloric acid, a proper amount of absolute ethyl alcohol and a proper amount of de-ionized water. A prepared anti-rust agent can form a layer of thin anti-rust film on a workpiece with anti-rust requirements; the film can be manually torn away; the strippable performance is good; the operation is simple; in addition, the prepared anti-rust film has high heat resistance, high acid and alkali corrosion resistance, oil resistance, water resistance and long anti-rust time, and is worthy of being popularized.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment agents, in particular to a modified ceria acid and alkali resistant peelable polymer antirust film. Background technique [0002] According to statistics, every year in the world, steel products with a total weight equivalent to 10-20% of the annual metal content cannot be used due to corrosion, rust and other reasons. Therefore, people have adopted various anti-rust methods to avoid rust. Cut your losses. There are various kinds of antirust agents, among which sodium nitrite has been favored and widely used because of its excellent antirust performance and low price. , a lot of research and development work has been carried out at home and abroad, and a variety of alkyl, alkoxy, halo, naphthoic acids and their derivatives, nitrobenzoic acids, and borates, borates and molybdenum have been prepared. A new type of water-soluble rust inhibitor that replaces sodium nitrite with mater...

AI Technical Summary

Problems solved by technology

[0003] In Guo Jun's article "The Development of PVA Water-Soluble Polymer Peelable Antirust Film", he added antirust agent and other additives to polyvinyl alcohol, heated it in a water bath until it was completely dissolved, and then used the coating fluid to dissolve it completely. The extension method uniformly coats it on the metal surface, heats and dries it in a drying oven to form a film, and uses the neutral salt spray test, water solubility test and electron microscope test to characterize the performance of the polyvinyl alcohol antirust packaging film. The results show that the PVA antirust film not only has good antirust performance, but also has good peelability and water solubility, which meets the characteristics of green packaging and has good application prospects. However, the article uses polyvinyl alcohol and polyvinyl alcohol The combination of ethylene glycol is used as the carrier film-forming agent of the anti-rust film. Both polyvinyl alcohol and polyethylene glycol have good water solubility, and the prepared anti-rust film is not easy to dissolve in cold water at 40°C, but it is not easy to dissolve in cold water at a constant temperature. In the hot water heated to above 40°C in the water bath, it can be observed that the polyvinyl alcohol film will gradually soften first, then the film will become thinner, and finally dissolve completely, indicating that the antirust film is water-soluble and belongs to high-temperature water-soluble The film can be recycled, and it can be transported at room temperature or below 40°C to play a good anti-rust effect, which greatly limits the application field of the anti-rust film. It must be modified to improve its corrosion resistance, oil resistance, High temperature resistance and water resistance, etc., expand the application field, so that it can meet the anti-rust and anti-corrosion requirements under various conditions