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Sterilization type strippable high-molecular rust-preventing film with added chitosan

A chitosan and polymer technology is applied in the field of adding chitosan bactericidal strippable polymer antirust film, which can solve the problems of restricting the application field of the antirust film and the like

Inactive Publication Date: 2017-08-11
江海涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Embodiment Construction

[0015] A chitosan-added bactericidal peelable polymer antirust film is prepared from the following raw materials in parts by weight (kg): aluminum isopropoxide 6.8, silane coupling agent KH560 0.2, tetraethyl orthosilicate 12 , Monoglyceryl Isostearate 1.8, Polyethylene Glycol 2, Methacryloxypropyl Trimethoxysilane 3.3, Polyvinyl Alcohol 15, Borax 1.8, Chitosan 2.4, Silver Zirconium Phosphate 0.6, Silane Coupling agent A151 0.2, glutaraldehyde 0.01, zinc naphthenate 3, triethanolamine 2, benzotriazole 2, sodium lauryl sulfate 1, dodecyl dimethylamine oxide amount, nitric acid amount, The right amount of hydrochloric acid, the right amount of absolute ethanol, the right amount of acetic acid, and the right amount of deionized water.

[0016] The chitosan-added bactericidal peelable polymer antirust film is prepared by the following specific steps:

[0017] (1) Mix aluminum isopropoxide and deionized water at a molar ratio of 1:100, reflux and stir in a water bath environment a...

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PUM

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Abstract

The invention discloses a chitosan-added bactericidal peelable polymer antirust film, which is prepared from the following raw materials: aluminum isopropoxide, silane coupling agent KH560, tetraethyl orthosilicate, isostearic acid Monoglyceride, polyethylene glycol, methacryloxypropyltrimethoxysilane, polyvinyl alcohol, borax, chitosan, silver-loaded zirconium phosphate, silane coupling agent A151, glutaraldehyde, naphthenic acid Zinc, triethanolamine, benzotriazole, sodium lauryl sulfate, appropriate amount of lauryl dimethyl amine oxide, appropriate amount of nitric acid, appropriate amount of hydrochloric acid, appropriate amount of absolute ethanol, appropriate amount of acetic acid, appropriate amount of deionized water; the present invention The prepared antirust agent can form a thin film on the surface of the workpiece, which is antibacterial, hydrophobic, oleophobic, not easy to break, has good heat resistance and weather resistance, plays a good antirust and anticorrosion effect, and is easy to peel off later, which is worth promoting.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment agents, in particular to a chitosan-added bactericidal 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 materials such as ...

Claims

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Application Information

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IPC IPC(8): C09D129/04C09D5/14C09D5/08C09D5/20C09D7/12
CPCC09D129/04C08L2201/08C09D5/08C09D5/14C09D5/20C09D7/62C09D7/65
Inventor 江海涛
Owner 江海涛
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