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Superhydrophobic deicing composite coating and preparation method thereof

A composite coating and hydrophobic coating technology, which is applied in the coating, metal material coating process, polyurea/polyurethane coating, etc., can solve the problems of increased heating power, increased heating time, and reduced stability of the heating coating. Achieve the effects of reducing power density, improving stability, and shortening heating time

Inactive Publication Date: 2019-11-08
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the heating coating is affected by the bonding strength of the surface ice layer. In the position where the ice layer is well bonded, the heating power of the heating coating increases significantly, and the heating time increases and the stability decreases.

Method used

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  • Superhydrophobic deicing composite coating and preparation method thereof
  • Superhydrophobic deicing composite coating and preparation method thereof
  • Superhydrophobic deicing composite coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0040] Example 1: (Ultrafast Laser Machining Heating / Hydrophobic Structured Coating)

[0041] based on figure 1 The schematic diagram of the multi-layer structure shown is sprayed by liquid pneumatic spray gun and ultra-fast laser processing. The process steps are as follows:

[0042] Step 1, preparation of the bottom insulating layer

[0043] First, put the parts to be processed into acetone solution, put them into the ultrasonic cleaning test machine for 30 minutes of ultrasonic cleaning, dry them with a hair dryer, put them in alcohol solution, put them into ultrasonic cleaning for 30 minutes, and finally dry them with a hair dryer.

[0044] Then, the base material is placed in the spraying workshop, and the non-conductive organic coating of polytetrafluoroethylene or polyurethane is used for spraying. In this embodiment, the polytetrafluoroethylene emulsion is used for vibration mixing for 5 minutes, and then the polytetrafluoroethylene emulsion is placed Enter the pneum...

example 2

[0057] Example 2: (Preparation of heating / hydrophobic structured coating by micro-imprinting)

[0058] based on figure 1 The schematic diagram of the multi-layer structure shown is sprayed by liquid pneumatic spray gun and ultra-fast laser processing. The process steps are as follows:

[0059] Step 1, preparation of the bottom insulating layer

[0060] First, put the parts to be processed into acetone solution, put them into the ultrasonic cleaning test machine for 30 minutes of ultrasonic cleaning, dry them with a hair dryer, put them in alcohol solution, put them into ultrasonic cleaning for 30 minutes, and finally dry them with a hair dryer.

[0061] Then, the base material is placed in the spraying workshop, and the non-conductive organic coating of polytetrafluoroethylene or polyurethane is used for spraying. In this embodiment, the polytetrafluoroethylene emulsion is used for vibration mixing for 5 minutes, and then the polytetrafluoroethylene emulsion is placed Enter ...

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Abstract

The invention relates to a superhydrophobic deicing composite coating and a preparation method thereof. The preparation method includes the following steps: after surface cleaning treatment is performed on a substrate material, and insulating organic paint is sprayed on the surface of a substrate to form an insulation layer; uniformly distributed electrodes are arranged on the surface of the insulation layer, distribution of the electrodes is arranged according to a coverage range of a heating layer, and the range of the heating layer is uniformly divided; heating painting containing a graphene filling material is sprayed on the surface of the electrodes and the insulation layer to form a heating coating, wherein the heating filling material can be graphene or a mixed filling material of graphene and metal Ag; a low surface energy solvent and nanoscale SiO2 is mixed by a dispersion process to obtain hydrophobic paint, the hydrophobic paint is then sprayed on the surface of the heatingcoating to form a hydrophobic coating; and a concave-convex micro-nano structure is uniformly processed on the surface of the hydrophobic coating by a laser or microprinting method, thereby improvingthe hydrophobicity of the coating.

Description

technical field [0001] The invention belongs to the technical field of material surface treatment, in particular to a superhydrophobic deicing composite coating and a preparation method thereof. Background technique [0002] Aircraft icing is a hot spot in the aviation industry. It will cause nearly 30 aviation accidents every year, seriously threatening aircraft and human life. Related studies have found that when the amount of supercooled water droplets is large, the air intake of the engine, the front of the wing, etc. Edge surfaces, cockpit glass, and some external sensor surfaces freeze rapidly and accumulate, forming ice layers that can cause loss of thrust and even parking failures. Most aircraft currently in service use complex anti-icing systems. Such as: ⑴ make the parts hollow, and then pass in hot air; ⑵ air bag deicing; ⑶ vibration deicing device; ⑷ heat through resistance wire, etc. These systems consume a lot of energy, have complex structures, difficult man...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/18C09D175/04C09D7/62C09D7/61C23C14/04C23C14/14C23C14/35
CPCC08K3/042C08K3/36C08K9/06C08K2201/011C09D7/61C09D7/62C09D127/18C09D175/04C23C14/042C23C14/14C23C14/35
Inventor 刘星马国佳曾元松张伟孙刚武壮壮
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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