Organic silicon gel anti-ice-covering coating as well as preparation method and application thereof

An anti-icing and silicone gel technology, applied in chemical instruments and methods, coatings, other chemical processes, etc., can solve problems such as the stability limitation of the liquid interface layer, and achieve long-term effective anti-icing function and excellent mechanical properties. , Durable effect

Inactive Publication Date: 2014-12-17
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This weak force greatly limits the stability of the liquid interface layer

Method used

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  • Organic silicon gel anti-ice-covering coating as well as preparation method and application thereof
  • Organic silicon gel anti-ice-covering coating as well as preparation method and application thereof
  • Organic silicon gel anti-ice-covering coating as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 20% by mass fraction of dihydroxy polydimethylsiloxane (n=200), 1% by mass fraction of methyltriacetoxysilane, 0.1% by mass fraction of octyltin and 0.9% by mass fraction of amine Propyltrimethoxysilane, silicone oil with a mass fraction of 68% (viscosity is 0.1cm 2 / s) and diatomaceous earth with a mass fraction of 10% were mixed and ball milled for 12 hours to make it uniform, so as to obtain the anti-icing coating. The anti-icing coating is directly coated on the surface of the copper sheet, and cured at room temperature for 48 hours to obtain a silicone gel anti-icing coating with low ice adhesion.

[0048] When the ambient temperature is 0~-40°C and the ambient humidity is 40%~90%, which can cause the surface of the copper sheet to freeze, the above-mentioned low ice adhesion silicone gel anti-icing coating can prevent supercooled water from contacting copper. The sheet reduces the icing on the surface of the copper sheet and greatly reduces the adhesion of the ic...

Embodiment 2

[0050] The mass fraction is 28% dihydroxypolymethylphenylsiloxane (n=40), the mass fraction is 1.5% propyltriethoxysilane, the mass fraction is 0.1% dibutyl tin laurate and mass fraction Fraction is 0.4% aminopropyltriethoxysilane, mass fraction is 60% silicone oil (viscosity is 10cm 2 / s) mixed with 10% active alumina by mass fraction and ball milled for 6 hours to make it uniform to obtain the anti-icing coating. The anti-icing coating is directly coated on the surface of an aluminum sheet, and cured at 40° C. for 30 hours to obtain a silicone gel anti-icing coating with low ice adhesion.

[0051] When the ambient temperature is 0-40°C and the ambient humidity is 40%-90%, which can cause the surface of the aluminum sheet to freeze, the above-mentioned low ice adhesion silicone gel anti-icing coating can prevent supercooled water from contacting the aluminum sheet. The sheet reduces the icing on the surface of the aluminum sheet and greatly reduces the adhesion of the ice la...

Embodiment 3

[0053] The mass fraction is 45% dihydroxypolyethylethoxysiloxane (n=300), the mass fraction is 2% tetraethoxysilane, the mass fraction is 0.5% dibutyl tin laurate and the mass fraction 0.5% propanesulfonate trimethoxysilane, mass fraction is 40% silicone oil (viscosity is 30cm 2 / s) and mass fraction of 12% activated carbon mixed and ball milled for 40 hours to make it uniform, to obtain the anti-icing coating. The anti-icing coating is directly coated on the surface of the iron sheet, and cured at 60°C for 24 hours to obtain a silicone gel anti-icing coating with low ice adhesion.

[0054] When the ambient temperature is 0-40°C and the ambient humidity is 40%-90%, which can cause the surface of the iron sheet to freeze, the low ice adhesion silicone gel anti-icing coating prepared above can prevent supercooled water from contacting the iron sheet. The sheet reduces the icing on the surface of the iron sheet and greatly reduces the adhesion of the ice layer, and the ice layer...

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Abstract

The invention belongs to the technical field of material surface engineering, and in particular relates to an organic silicon gel anti-ice-covering coating, and a preparation method and application of the organic silicon gel anti-ice-covering coating. The low-ice-adhesion organic silicon gel anti-ice-covering coating consists of crosslinkable polysiloxane, a crosslinking agent, a catalyst, a promoter, non-volatile hydrophobic liquid and an inorganic material. The preparation method comprises the following steps: performing mixing and uniform ball-milling on polysiloxane, the crosslinking agent, the catalyst, the promoter, the non-volatile hydrophobic liquid and the inorganic material, then coating on a base material, and curing to obtain an anti-ice-covering coating, wherein crosslinkable polysiloxane, the crosslinking agent, the catalyst and the promoter form an organic silicon rubber network by virtue of reaction, and the non-volatile hydrophobic liquid is effectively fixed in the anti-ice-covering coating; gel formed by the non-volatile hydrophobic liquid and the crosslinkable organic silicon rubber network is a main anti-icing functional layer which can delay the surface icing of water and reduce the binding force between an ice layer and a substrate material so as to ensure that the coating surface achieves an anti-ice-covering effect, and the mechanical performance of the anti-ice-covering coating also can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of material surface engineering, and in particular relates to a silicone gel type anti-icing coating and its preparation method and application. Background technique [0002] Icing is a very common phenomenon in nature. When water vapor in the air comes into contact with the surface of a material whose temperature is below the freezing point, a phase change will occur to form frost. Icing has brought many problems to people’s production and life, such as: icing on the surface of refrigeration equipment will reduce the heat transfer efficiency of the equipment or even fail; icing on the surface of aircraft will lead to flight safety accidents in the aerospace field; Destroy the ecological environment, transportation, power facilities, etc. At the beginning of 2008, a large-scale freezing disaster occurred in southern my country, which had a great impact on industrial and agricultural production and people's ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D183/06C09D183/08C09D183/07C09D7/12C09K3/18
Inventor 吴俊杰周舟査方林刘凯冯兵何铁祥
Owner STATE GRID CORP OF CHINA
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