Polyaniline-adding anti-corrosion peelable high molecular anti-rust film

Abstract

The invention discloses a polyaniline-adding anti-corrosion peelable high molecular anti-rust film, which is prepared from the following raw materials including aniline, carbon black, ammonium persulfate, lauryl sodium sulfate, aluminum isopropoxide, silane coupling agents A151, tetraethoxysilane, polyoxyethylene aliphatic alcohol ether, polyethylene glycol, octyltriethoxysilane, polyvinyl alcohol, borax, vinyl triamine, sodium citrate, trolamine, aminosilicone, propanetriol, dodecyl sodium sulfate, a proper amount of dodecyl dimethyl betaine, a proper amount of nitric acid, a proper amount of absolute ethyl alcohol and a proper amount of deionized water. The prepared anti-rust agent can form one layer of compact film on the surface of a workpiece. The polyaniline-adding anti-corrosion peelable high molecular anti-rust film has the advantages that the bonding force is high; the adhesion force is high; falling cannot easily occur; the oil-resistant, anti-corrosion and acid-base-resistant performance is good; the peelable performance is good; the operation is convenient; the resource loss can be reduced; the economic benefits are good; the anti-rust film 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 polyaniline-added anti-corrosion peelable polymer anti-rust 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 materials su...

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