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Coating-containing anti-icing propeller blade leading-edge assembly

A propeller and leading edge technology, which is applied in the field of leading edge assemblies of coated anti-icing propeller blades, can solve problems such as the inability to fully meet the safety requirements for anti-icing and de-icing on aircraft surfaces.

Active Publication Date: 2014-02-19
LIYANG TECH DEV CENT
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AI Technical Summary

Problems solved by technology

However, the performance of most of the current low surface energy hydrophobic coatings cannot fully meet the safety requirements for anti-icing of aircraft surfaces.

Method used

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Embodiment Construction

[0020] A propeller blade lip assembly according to the present invention includes a propeller blade lip casing and an anti-icing coating on the exterior of the casing, the anti-icing coating comprising a primer and a topcoat, the primer being a two-component ring Oxygen primer and topcoat are organofluorosilicon modified acrylate coatings. Preferably, the dry film thickness of the primer and topcoat is 25 microns and 45 microns, respectively. Preferably, the leading edge of the propeller blade referred to in the present invention refers to the front part of the blade projected on the front 1 / 5 range of the chord length. More preferably, the thickness of the anti-icing coating on the leading edge shell is not uniform, for example, gradually becomes thinner from the front end of the blade to the rear, or gradually becomes thicker and then gradually thinner, which can not only improve the anti-icing characteristics but also reduce the Little effect on the aerodynamic performance...

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Abstract

A coating-containing anti-icing propeller blade leading-edge assembly comprises a propeller blade leading-edge housing and an anti-icing coating positioned outside the housing. The anti-icing coating comprises a primer and a finish paint. The primer is a two-component epoxy primer. The finish paint is an organic fluorine-silicon modified acrylate coating. Dry film thicknesses of the primer and the finish paint are respectively 25 micrometers and 45 micrometers. The organic fluorine-silicon modified acrylate coating comprises: by weight, 55-65% of organic fluorine-silicon modified acrylic resin, 20-25% of pigment and filler, 3% of nano-zinc oxide, 3% of nanometer aluminium oxide, 1% of a levelling agent, 0.8% of an antifoaming agent, 1.2% of a dispersant, 0.5% of a catalyst and 3-5% of a solvent. According to the anti-icing propeller blade leading-edge assembly, formation of an ice layer on the propeller blade leading-edge can be minimized effectively. In addition, the anti-icing propeller blade leading-edge assembly is beneficial to shedding of an ice layer which has already formed.

Description

technical field [0001] The invention relates to a coated anti-icing propeller blade leading edge assembly. Background technique [0002] In today's world, airplanes have gradually become a means of transportation that people pay more and more attention to because of their fast and safe features. However, when the aircraft flies at subsonic speeds below a certain critical Mach number in icing weather conditions, the windward surfaces of some components, such as the leading edge of propeller blades, will freeze due to the impact and accumulation of water droplets in the atmosphere. A large number of accidents and studies have shown that even a small amount of ice accumulation on key parts of the aircraft will lead to a decrease in the lift of the aircraft and an increase in flight resistance, which will lead to deterioration of the aerodynamic qualities of the aircraft such as maneuverability and stability. Especially when the aero-engine is under a certain temperature an...

Claims

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Application Information

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IPC IPC(8): C09D133/08C09D7/12C09D5/00C08F283/12C08F220/18C08F220/28C08F220/22C08F220/46C08F230/08B05D1/38B05D3/00
Inventor 张俊
Owner LIYANG TECH DEV CENT
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