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A kind of preparation method of anti-icing coating

A coating and anti-icing technology, applied in coatings, polyurea/polyurethane coatings, sea area engineering, etc., can solve problems such as dam leakage, endangering dam safety, and high cost

Active Publication Date: 2020-12-25
新疆万华昌兴节能科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the existence of internal and external temperature differences, the tensile stress exceeding the allowable RCC dam body itself will be generated, and the concrete will produce cracks or even penetrating cracks due to the tensile stress, which will cause leakage of the dam body, bring inconvenience to operation management, and even endanger the dam Safety
[0003] For example, in a project located in a severe cold area, due to the damage of the insulation layer of the dam body due to the ice pullout force, the dam body seeps water, and under the action of frost heaving, the dam body leaks seriously, so grouting treatment has to be carried out, which is costly

Method used

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  • A kind of preparation method of anti-icing coating
  • A kind of preparation method of anti-icing coating
  • A kind of preparation method of anti-icing coating

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preparation example Construction

[0020]The invention provides a method for preparing an anti-icing pull-out coating, including the following steps:

[0021]Pretreating the insulation layer to obtain the pretreatment insulation layer;

[0022]Coating a polyaspartic acid ester polyurea on one side of the pretreatment insulation layer to obtain a polyurea layer;

[0023]Coating a fluorine-modified resin topcoat on the surface of the polyurea layer to obtain a fluorine-modified resin topcoat layer to obtain an anti-icing coating;

[0024]The fluorine-modified resin topcoat is prepared from aspartame polyurea resin and fluorocarbon resin through addition reaction.

[0025]The present invention preprocesses the heat preservation layer to obtain the pretreatment heat preservation layer. In the present invention, the thermal insulation layer is preferably a polyurethane base layer or a polystyrene board base layer; the flatness of the pretreatment thermal insulation layer is preferably less than 3 mm; in the embodiment of the present inv...

Embodiment 1

[0038]Select the insulation layer of the dam body in a severe cold area, and pretreat the insulation layer:

[0039]Use a sander to sand the surface of the polyurethane insulation layer, use geotextiles to shield and protect adjacent parts, and sand to smooth and clean without abrupt changes. After sanding, use high-pressure air to clean the base surface to remove the floating dust on the base surface , It is required to be dry, clean, and free of dirt, to obtain a pre-treated insulation layer;

[0040]After the treatment of the base layer is completed, check and accept, the flatness of the pretreatment insulation layer is 3mm, no bubbles, holes, and uniform layer thickness;

[0041]Inspection of polyurea layer samples:

[0042]Before construction, coat a 200×200mm polyurea layer sample with a thickness of not less than 1.5mm, conduct appearance quality evaluation and leave sample for inspection.

[0043]Table 1 Test results of mechanical properties of polyurea layer samples after placing 7D and 2...

Embodiment 2

[0056]Select the insulation layer of the dam body in a severe cold area, and pretreat the insulation layer:

[0057]Use a sander to sand the surface of the polyurethane insulation layer, use geotextiles to shield and protect adjacent parts, and sand to smooth and clean without abrupt changes. After sanding, use high-pressure air to clean the base surface to remove the floating dust on the base surface , It is required to be dry, clean, and free of dirt, to obtain a pre-treated insulation layer;

[0058]After the treatment of the base layer is completed, check and accept, the flatness of the pretreatment insulation layer is 2.5mm, there is no air bubbles, holes, and the layer thickness is uniform;

[0059]Inspection of polyurea layer samples:

[0060]Before construction, coat a 200×200mm polyurea layer sample with a thickness of not less than 1.5mm, conduct appearance quality evaluation and leave sample for inspection.

[0061]Table 2 Test results of mechanical properties of polyurea layer samples ...

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Abstract

The invention provides a preparation method of an anti-ice-pulling coating and belongs to the technical field of coating preparation. An insulating layer is pre-treated, the ash on the surface of theinsulating layer is cleared, and the insulation layer is required to be dry, clean and free from dirt; the cohesive property and the excellent weather resistance between polyaspartic acid ester grouppolyurea and the insulating layer base are used, and the anti-ice-pulling performance of the insulating later is improved; the fluorine group of fluorocarbon resin is introduced to the fluorine modified resin finishing coat through addition on the basis of the asparagus polyurea resin, the asparagus polyurea resin has excellent weather resistance, the weather resistance of the film of the preparedcoating is high, the surface energy is low, the friction coefficient is small, the substances adhering to the surface of the fluorine modified resin finishing coat can be separated easily, the binding force of the coating and an ice body is reduced, and the anti-ice-pulling effect is enhanced. The cohesive property of the insulating layer of the prepared anti-ice-pulling coating and a polyurea layer is excellent, and the ice-pulling force phenomenon doesn't occur in the whole winter.

Description

Technical field[0001]The invention relates to the technical field of coating preparation, in particular to a preparation method of an anti-icing pull-out coating.Background technique[0002]Dam body cracks are a common problem in RCC dams, and temperature stress is the main cause of dam concrete surface cracks. In order to prevent thermal stress from causing cracks on the concrete dam surface, in severe cold areas, the surface of the roller compacted concrete dam is usually insulated. The insulation material is generally polystyrene board or polyurethane insulation material. However, in severe cold areas, the temperature is low, and the thickness of the frozen layer is large. Generally, the thickness of the frozen layer in severe cold areas is greater than 1.6 meters, because the ice body and the dam body have been frozen as a whole. When the reservoir is supplying water or generating electricity, the water level of the reservoir drops and the ice body sinks under its own weight. When...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B3/16C09D175/02C09D187/00
Inventor 王立成张恒瑜林锋赵成先丁照祥方文时罗建华张俊平陈晓泓李岳东
Owner 新疆万华昌兴节能科技有限责任公司