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Waterproof corrosion-resistant color coating steel plate and preparation method thereof

A corrosion-resistant layer and color coating technology, applied in the preparation of the waterproof and corrosion-resistant color-coated steel sheet, and the field of the waterproof and corrosion-resistant color-coated steel sheet, can solve the problems of bonding strength, compactness, water resistance, and leakage resistance. properties, adhesion strength, weather resistance, low temperature flexibility, chemical corrosion resistance, and electrical properties defects, etc., to achieve excellent water resistance, anti-leakage, and short process steps.

Inactive Publication Date: 2014-10-22
CHANGSHU HUAYE STEEL STRIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent solution can fulfill the technical effect of paragraph 0045 of its description. However, because the resin used in it is polyurethane resin, although it has the advantages of high strength and good tear resistance, the bonding strength with the metal surface , compactness, water resistance, leakage resistance, adhesion strength, weather resistance (and heat and cold resistance), low temperature flexibility, chemical resistance, and electrical properties are relatively fragile.

Method used

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  • Waterproof corrosion-resistant color coating steel plate and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] prepared by figure 1 The shown waterproof and corrosion-resistant color coated steel plate comprises the following steps:

[0027] A) Select the material and clean it. First select the surface within one month from the production date without defects, that is, the surface has no defects such as pits, rust, and peeling. The thickness is 0.5mm and the surface on both sides has a thickness of 75μm. For galvanized steel sheets with a zinc layer, the galvanized steel sheets are first cleaned with a disk brush, followed by alkaline cleaning and electrolytic cleaning in order to remove the oxide skin and / or oil stains on the surface of the galvanized steel sheets, and then dried after cleaning. at 90°C, the traveling speed of the steel plate is 65m / min, and the steel plate matrix 1 is obtained;

[0028] B) Activation treatment, chemical coating is carried out on the surface of the steel plate substrate 1 obtained in step A) facing outwards in the state of use, so as to form a...

Embodiment 2

[0032] Only change the galvanized steel sheet in step A) to a galvanized steel sheet with a thickness of 1.0mm and change the zinc layer on both sides of the surface to an galvalume-coated galvanized steel sheet with a thickness of 75μm. The cleaning method is changed to: cleaning with a disk brush first , then carry out pickling and electrolytic cleaning, change the drying temperature after cleaning to 80°C, and change the traveling speed of the steel plate to 55m / min; change the thickness of the chemical coating 11 in step B) to 10μm, and coat hexavalent chromium Change the drying temperature after the solution to 115°C, and change the drying time to 11s; change the thickness of the primer coating 21 in step C) to 30 μm, and change the drying and curing temperature and time after applying the primer to 210°C and 46s, change the thickness of the topcoat coating 22 to 45 μm, and change the temperature and time of drying and curing after coating the topcoat to 230°C and 54s resp...

Embodiment 3

[0034] Only change the thickness of the galvanized steel sheet in step A) to 1.5 mm, the thickness of the galvanized layer to 30 μm, and the cleaning method to: first perform plate brush cleaning, then electrolytic cleaning, and change the drying temperature after cleaning to 70°C, the traveling speed of the steel plate is 60m / min; change the thickness of the chemical coating 11 in step B) to 15μm, change the drying temperature after coating the hexavalent chromium solution to 125°C, and change the drying time to 5s; change the step In C), the thickness of the primer coating 21 is changed to 45 μm, the drying and curing temperature and time after coating the primer are changed to 235°C and 35s respectively, the thickness of the topcoat coating 22 is changed to 15μm, and the topcoat is applied Then, the temperature and time of drying and curing were changed to 250°C and 42s respectively; the thickness of the waterproof and corrosion-resistant layer 3 in step D) was changed to 95...

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Abstract

The invention discloses a waterproof corrosion-resistant color coating steel plate and a preparation method thereof, belonging to the technical field of a color coating steel plate and preparation thereof. The method comprises the following steps: selecting and cleaning materials to obtain a steel plate matrix; chemically coating one side surface of the steel plate matrix and drying to obtain a plate blank; coating the surface of the chemical coating of the plate blank with a primer coating, and drying and curing; after cooling, coating the surface of the primer coating with a finish paint layer, and drying and curing to obtain a base plate; and coating the surface of the finish paint coating of the base plate with waterproof corrosion-resistant paint, and drying and curing to obtain the waterproof corrosion-resistant color coating steel plate. The waterproof corrosion-resistant color coating steel plate is excellent in waterproof anti-leakage property, weather resistance, chemical corrosion resistance and low-temperature flexibility; the process is simple and short, the adhesion between the waterproof corrosion-resistant layer and the steel plate surface is strong while the strength is excellent, the steel plate is free of peeling and bubbling after being soaked in water for 400h, and after 720h of neutral salt spray test, a transition layer is free of cracking or peeling.

Description

technical field [0001] The invention belongs to the technical field of color-coated steel plates and preparation thereof, in particular to a waterproof and corrosion-resistant color-coated steel plate, and also relates to a preparation method of the waterproof and corrosion-resistant color-coated steel plate. Background technique [0002] The steel plate is an important engineering material, but the loss caused by the shortened service life of the steel plate or the loss of its use value due to corrosion during use is also quite huge. Especially with the development of modern industry, the emergence of a number of emerging industrial fields and the construction of many modern projects have put forward higher requirements for the waterproof and corrosion resistance and service life of steel. [0003] In recent years, waterproof and corrosion-resistant technology has developed rapidly at home and abroad, and there are many reports in the literature on the subsequent waterproo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/08B32B37/00
Inventor 李丽陶朕胡建国
Owner CHANGSHU HUAYE STEEL STRIP
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