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Composite gradient coating on surface of low-altitude aircraft and preparation method of composite gradient coating

A low-altitude aircraft, gradient coating technology, applied in coating, metal material coating process, solid diffusion coating, etc., can solve the problems of low melting point, insufficient high temperature resistance, etc., to improve service life and corrosion resistance , the effect of preventing failure

Active Publication Date: 2022-03-11
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to effectively reduce the weight of the aircraft itself and increase the material it can carry, different types of resin-based composite materials are used to make the fuselage of low-altitude aircraft; however, resin-based composite materials have low melting point, insufficient high temperature resistance and are easy to be damaged. The problem of failure due to smoke corrosion at the fire scene limits its application in large-scale fires and high-temperature fires

Method used

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  • Composite gradient coating on surface of low-altitude aircraft and preparation method of composite gradient coating
  • Composite gradient coating on surface of low-altitude aircraft and preparation method of composite gradient coating
  • Composite gradient coating on surface of low-altitude aircraft and preparation method of composite gradient coating

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Embodiment 1

[0031] The invention provides a composite gradient coating on the surface of a low-altitude aircraft and a preparation method thereof. refer to figure 1 , according to an embodiment of the present invention, comprising a resin-based composite material matrix, the reinforcing fiber adopts glass fiber, the resin-based composite material is covered on the surface of the fuselage of a low-altitude aircraft, and a bonding layer with a thickness of 30 μm is sequentially prepared on the resin-based composite material matrix , 50 μm thick oxygen barrier propagation layer and 1000 μm thick heat insulation and cooling layer; use silicon (Si) as the bonding layer, use LuTa 0.5 Nb 0.5 o 4 As the oxygen barrier transmission layer, Lu 3 Ta 0.3 Nb 0.7 o 7 The ceramic coating acts as a thermal insulation and cooling layer.

[0032] Specifically: (1) Prepare a silicon (Si) bonding layer with a thickness of 30 μm on the surface of the glass fiber substrate by means of electron beam physi...

Embodiment 2

[0036] The invention provides a composite gradient coating on the surface of a low-altitude aircraft and a preparation method thereof. refer to figure 1 , according to an embodiment of the present invention, comprising a resin-based composite material matrix, the reinforcing fiber adopts carbon fiber, the resin-based composite material is covered on the surface of the low-altitude aircraft fuselage, and a bonding layer with a thickness of 100 μm is sequentially prepared on the resin-based composite material matrix. 75μm thick oxygen barrier transmission layer and 100μm thick heat insulation and cooling layer; use aluminum as the bonding layer, use Tm 1 / 4 Yb 1 / 4 Lu 1 / 4 sc 1 / 4 Ta 0.8 Nb 0.2 o 4 As the oxygen barrier transmission layer, Y 3 Ta 0.5 Nb 0.5 o 7 The ceramic coating acts as a thermal insulation and cooling layer.

[0037] Specifically: (1) Prepare an aluminum bonding layer with a thickness of 100 μm on the surface of the glass fiber substrate by means of ...

Embodiment 3

[0041] The invention provides a composite gradient coating on the surface of a low-altitude aircraft and a preparation method thereof. refer to figure 1 , according to an embodiment of the present invention, comprising a resin-based composite material matrix, the reinforcing fiber adopts basalt fiber, the resin-based composite material is covered on the surface of the low-altitude aircraft fuselage, and a bonding layer with a thickness of 50 μm is sequentially prepared on the resin-based composite material matrix , 80μm thick oxygen barrier propagation layer and 600μm thick heat insulation and cooling layer; use tantalum niobium molybdenum alloy as bonding layer, use YTa 0.5 Nb 0.5 o 4 For the oxygen barrier transmission layer, YGdDyTa is used 0.5 Nb 0.5 o 7 The ceramic coating acts as a thermal insulation and cooling layer.

[0042] Specifically: (1) Prepare a tantalum-niobium-molybdenum alloy bonding layer with a thickness of 50 μm on the surface of the glass fiber sub...

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Abstract

The invention discloses a composite gradient coating on the surface of a low-altitude aircraft and a preparation method thereof.The composite gradient coating comprises a resin-based composite material base body, the surface of a fuselage of the low-altitude aircraft is covered with the resin-based composite material base body, and a bonding layer, an anti-oxidation layer, an oxygen propagation prevention layer and a heat insulation and cooling layer are sequentially prepared on the resin-based composite material base body; wherein the thickness of the bonding layer is 30-100 [mu] m, the thickness of the oxygen propagation prevention layer is 50-100 [mu] m, and the thickness of the heat insulation cooling layer is 100-1000 [mu] m. The high-temperature-resistant, high-heat-insulation, corrosion-resistant and long-service-life coating material composed of the bonding layer, the anti-oxidation layer, the oxygen propagation prevention layer and the heat-insulation cooling layer is prepared on the surface of the resin-based composite material matrix, and the limit working temperature of the resin-based composite material is increased by 100-600 DEG C; and the low-altitude aircraft can serve for a long time in a high-temperature and high-corrosion fire rescue site.

Description

technical field [0001] The invention relates to the technical field of coating preparation, in particular to a composite gradient coating on the surface of a low-altitude aircraft and a preparation method thereof. Background technique [0002] With the in-depth research and application of unmanned aerial vehicles, its maximum take-off weight has reached more than 10 tons. Using unmanned low-altitude aerial vehicles at fire rescue sites to perform tasks such as fire fighting, personnel rescue, communication connections, and material delivery can effectively reduce traditional The danger of pilots performing missions, while unmanned low-altitude aircraft is small in size, easy to operate, and less restrictive to the take-off site when carrying out fire rescue in cities, which is more suitable for modern development trends. However, in order to effectively reduce the weight of the aircraft itself and increase the material it can carry, different types of resin-based composite m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/11C23C4/134C23C8/12C23C14/20C23C14/30
CPCC23C14/20C23C14/30C23C8/12C23C4/134C23C4/11Y02T50/40
Inventor 冯晶陈琳李柏辉张陆洋王建坤刘杰张义平江济胡刚毅毛福春
Owner KUNMING UNIV OF SCI & TECH