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Steel roof surface treatment method

A treatment method and technology for steel roofs, which are applied to devices for coating liquids on surfaces, special surfaces, coatings, etc., can solve problems such as increasing construction costs, endangering human health, reducing production efficiency, etc. Excellent barrier properties

Pending Publication Date: 2022-05-06
施国全 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Coating anticorrosion is one of the important ways of metal anticorrosion. In order to obtain excellent anticorrosion effect, it is necessary to treat the surface to be painted, which not only consumes time and energy, reduces production efficiency, and increases construction cost, but also rust dust will harm human health
Even so, the result of the surface preparation may not meet the painting requirements

Method used

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  • Steel roof surface treatment method
  • Steel roof surface treatment method
  • Steel roof surface treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Surface pretreatment of steel roof: clean up the burrs, welding flux, welding nodules, spatter, dust, loose scale and thick rust layer on the steel roof surface;

[0058] Preparation of rust conversion paint coating: mix the following components in mass fractions, styrene-acrylic emulsion 20%, polyvinylidene chloride emulsion 15%, sulfinic acid 10%, phosphoric acid 5%, methanol 3%, polyol 3%, polydimethylsiloxane 4% methyl siloxane and 40% deionized water to obtain rust conversion paint coating;

[0059] For the coating of the steel roof surface, brush the rust conversion paint on the surface of the steel roof, and cure it for 24 hours under natural conditions to make it completely penetrate the entire rust layer, transform the rust layer into a continuous closed coating, and make the steel roof and The rust layer is completely closed to get a closed coating, figure 1 It is a comparison picture before and after brushing the rust conversion paint paint, figure 2 It is...

Embodiment 2

[0068] Surface pretreatment of steel roof: clean up the burrs, welding flux, welding nodules, spatter, dust, loose scale and thick rust layer on the steel roof surface;

[0069] Preparation of rust conversion paint coating: mix the following components in mass fractions, 15% styrene-acrylic emulsion, 10% polyvinylidene chloride emulsion, 15% sulfinic acid, 3% phosphoric acid, 2% methanol, 6% polyol, polydimethylsiloxane 5% methyl siloxane and 44% deionized water to obtain rust conversion paint coating;

[0070] For the coating of the steel roof surface, brush the rust conversion paint on the surface of the steel roof, and cure it for 24 hours under natural conditions to make it completely penetrate the entire rust layer, transform the rust layer into a continuous closed coating, and make the steel roof and The rust layer is completely closed to obtain a closed coating;

[0071] Prepare nano anticorrosion coating: mix the following components by mass fraction, acrylic resin 40...

Embodiment 3

[0076] Surface pretreatment of steel roof: clean up the burrs, welding flux, welding nodules, spatter, dust, loose scale and thick rust layer on the steel roof surface;

[0077] Preparation of rust conversion paint: mix the following components by mass fraction, styrene-acrylic emulsion 25%, polyvinylidene chloride emulsion 20%, sulfinic acid 5%, phosphoric acid 7%, methanol 4%, polyol 2%, silicone oil 3 % and deionized water 34%, to obtain the rust conversion paint coating;

[0078] For the coating of the steel roof surface, brush the rust conversion paint on the surface of the steel roof, and cure it for 24 hours under natural conditions, so that it can completely penetrate the entire rust layer, and convert the rust layer into a continuous closed coating, so that the steel roof and The rust layer is completely closed to obtain a closed coating;

[0079] Prepare nano anti-corrosion coating: mix the following components by mass fraction, acrylic resin 30%, polyurethane resin...

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Abstract

The invention provides a steel roof surface treatment method, and belongs to the technical field of paint corrosion prevention. The invention provides a steel roof surface treatment method which comprises the following steps: cleaning a steel roof surface to obtain a pretreated clean steel roof surface; the surface of the pretreated clean steel roof is coated with rust conversion paint, and a closed coating is obtained; and the surface of the sealing coating is coated with a nanometer anti-corrosion coating, and the treated steel roof surface is obtained. The surface of the steel roof is treated through the chemical reduction reaction and the nano corrosion coating, corrosion of atmosphere, water, sunlight and ultraviolet rays to the steel roof can be blocked, and the purpose of full-life-cycle protection is achieved.

Description

technical field [0001] The invention relates to the technical field of paint anticorrosion, in particular to a method for treating the surface of a steel roof. Background technique [0002] The steel roof in the rare atmospheric environment is affected by sunlight, wind and sand, rain and snow, frost and dew, and temperature and humidity changes throughout the year. Among them, oxygen and moisture in the atmosphere are important factors that cause corrosion of outdoor steel structures. Industrial gases contain SO 2 , CO 2 , NO 2 , Cl 2 、H 2 S and NH 3 etc., although the content of these components is very small, the corrosion hazards to steel cannot be ignored. Among them, SO 2 Most influential, Cl 2 The passivation film on the metal surface can be destroyed. These gases dissolve in water and become acidic, forming acid rain and corroding metal facilities. [0003] Coating anticorrosion is one of the important ways of metal anticorrosion. In order to obtain excellent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D125/14C09D7/61C09D7/65C09D5/08C09D133/00C09D5/26C09D5/33C23C22/08B05D1/36B05D5/00B05D7/00B05D7/14B05D7/16
CPCC09D125/14C09D7/61C09D7/65C09D5/08C09D133/00C09D5/26C09D5/004C23C22/08B05D7/14B05D7/16B05D7/54B05D1/36B05D5/00C08K2003/329C08K2201/011C08K2003/2241B05D2202/15C08L27/08C08K5/09C08K3/32C08L75/04C08K3/22
Inventor 施国全
Owner 施国全
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