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Preparation method for anticorrosion iron-coating film

An iron coating and anti-corrosion technology, which is applied in the direction of anti-corrosion coatings, coatings, alkali metal silicate coatings, etc., can solve the problems that the iron coating cannot achieve anti-rust, antibacterial, anti-corrosion, etc., and achieve excellent barrier performance , good adsorption performance, low price effect

Inactive Publication Date: 2018-12-14
FOSHAN CHANCHENG DISTRICT NUOGAO ENVIRONMENTAL PROTECTION TECH CO LTD
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method for preparing an anti-corrosion iron-coated film in view of the current problems that the iron-coated film cannot prevent rust, antibacterial and anti-corrosion after film coating

Method used

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  • Preparation method for anticorrosion iron-coating film

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Embodiment Construction

[0021] Take 80-100g polyvinyl chloride resin, 40-50g dioctyl phthalate, 15-20g nano-calcium carbonate, 10-15g ethyl cellulose, put them into a twin-screw extruder and knead them at 100-120 Pre-plasticize at ℃ for 20-30 minutes, then transfer to the film blowing machine, after stretching and blowing the film, blowing traction, wind ring cooling, and corona winding, the iron-coated outer film is obtained. Take 10-15g of ascorbic acid, Add 10-15g of phytic acid and 10-20g of 98% sulfuric acid solution into the beaker, stir at 300-400r / min for 20-30min, then stand at 0-4°C for 1-2h and then filter to obtain the filter residue. Take 10-15g of filter residue and add it to 100-150mL deionized water, stir at 300-400r / min for 20-30min, then add 200-300g of absolute ethanol, stir evenly and let it stand for 3-5h, then filter to obtain a filter cake. Place in a drying oven and dry to constant weight to obtain a corrosion inhibitor. Take 5-10g lithium silicate, 12-24g mass fraction is 2% ...

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Abstract

The invention relates to a preparation method for an anticorrosion iron-coating film, belonging to the technical field of metal coating films. According to the invention, a corrosion inhibitor is prepared by reacting ascorbic acid with phytic acid; since the ascorbic acid has the characteristics of low toxicity or non-toxicity and low price, and oxygen atoms in molecules thereof have strong electron donating ability, a firm adsorption protective film can be formed on a metal surface, and can stably exist under alkaline conditions; after bonding of the ascorbic acid with the phytic acid, when phosphate molecules contacts with the surface of a material, hydrophobic chains in the molecules are adsorbed on the surface of the material so as to form a continuous adsorption layer, and hydrophilicgroups thereof face air; since the molecules contain -OH, the molecules can form hydrogen bonds with water molecules, and an adsorbed water layer forms a conductive film, so the surface conductivityof the material is enhanced, static charge accumulation on the surface of the material is reduced, and an infiltration path which oxygen molecules takes to reach the surface of a substrate is extended; and the anticorrosion iron-coating film has excellent barrier properties, improved corrosion resistance, and good application prospects.

Description

technical field [0001] The invention relates to a method for preparing an anti-corrosion iron coating, which belongs to the technical field of metal coatings. Background technique [0002] Resource conservation, green environmental protection and food safety are increasingly becoming the mainstream elements of packaging development in the world. In order to comply with this trend, the traditional metal packaging industry has launched a new packaging material - iron-coated film. Iron-clad film is a deep-processing product of steel. It is composed of polymer resin film and steel substrate. The plastic film is composited on the metal substrate through high temperature and high pressure. It can be a special material with dual characteristics of plastic film and metal plate. It can replace internal coating and external coating technology, and has been developed into many fields such as building material interior decoration, home appliance shell, and ship interior decoration. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/06C08J5/18C08L27/06C08L1/28C08K5/12C08K3/26C09D1/04C09D5/08
CPCC08J5/18C08J7/06C08J2327/06C08K5/12C08K2003/265C08K2201/011C09D5/08
Inventor 胡次兵张桂芳史志新
Owner FOSHAN CHANCHENG DISTRICT NUOGAO ENVIRONMENTAL PROTECTION TECH CO LTD
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