Preparation method of resin-based composite material flow guide blade erosion-resistant coating

A composite material and guide vane technology, applied in metal material coating process, coating, device for coating liquid on the surface, etc. High cost, complex and diverse shapes of guide vanes, etc., to achieve the effect of improving bonding strength and coating density, strong process controllability, and improving spraying efficiency

Active Publication Date: 2019-09-20
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the application of guide vane components, this technology has the following problems: (1) The thickness of the traditional metal edging reaches (0.4-0.5) mm, and it is connected with the composite material through an adhesive, and the overall weight gain is obvious; (2) The metal edging The processing technology is complicated and costly, and the shape of the guide vane is complex and diverse, which further limits the popularization and application of this method; (3) With the continuous development of engine technology, the working temperature of the guide vane continues to increase, due to the metal wra

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The base of the guide vane is made of carbon fiber reinforced polyimide composite material, and the primer is prepared by uniformly mixing liquid modified polyimide resin with a weight ratio of 100:20 and commercially available spherical aluminum powder. The particle size of the aluminum powder is 30 μm~ 60 μm; use a room temperature gas spray gun to spray the prepared primer evenly on the surface of the polyimide composite guide vane, and cure at 300 ° C for 3 hours to obtain a layer with a thickness of 50 μm; use corundum sand with a particle size of 165 μm (100 mesh), Under the pressure of 0.3MPa, the surface of the primer layer is sandblasted, and the residual sand particles on the surface of the workpiece are removed with compressed gas, and then the surface thermal spraying coating is prepared.

[0019] The middle layer is made of commercially available spherical aluminum powder with a particle size of 15 μm to 45 μm. The spraying process used is detonation sprayi...

Embodiment 2

[0025] The guide vane matrix is ​​made of carbon fiber reinforced bismaleimide composite material, and the primer is prepared by uniformly mixing liquid modified bismaleimide resin with a weight ratio of 100:35 and commercially available spherical copper powder, of which copper powder The particle size is 30 μm to 50 μm; the prepared primer is evenly sprayed on the surface of the composite guide vane with a room temperature gas spray gun, and after curing for 1 hour at 260°C, a primer layer with a thickness of 50 μm is obtained; corundum sand with a particle size of 165 μm (100 mesh) is used, Under the pressure of 0.3MPa, the surface of the primer layer is sandblasted, and the residual sand particles on the surface of the workpiece are removed with compressed gas, and then the surface thermal spraying coating is prepared.

[0026] The middle layer is made of commercially available spherical copper powder with a particle size of 10 μm to 30 μm. The spraying process used is deto...

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Abstract

The invention belongs to the field of resin-based composite material protective coatings, and particularly relates to a preparation method of a resin-based composite material flow guide blade erosion-resistant coating. According to the preparation method, structures of a resin/metal primer layer and a metal intermediate layer are added in a traditional anti-scouring coating, so that the problem of excessive interface stress caused by mismatching of thermal expansion coefficients of the coating is effectively solved, the coating can be continuously used 3000 times in a thermal cycle test of 300 DEG C without failure, and the method is suitable for preparing the anti-scouring coatings of resin-based composite material flow guide blades and stator blades. The resin base/metal primer layer structure is prepared through a room-temperature gas spraying and curing treatment process, so that the interface compatibility of the coating and a resin-base body is improved, and the interface bonding strength is improved; on the other hand, the pretreatment of spraying to blade bodies is not needed, so that the damage of the pretreatment to blade body matrix resin and fibers is reduced. The metal intermediate layer and the anti-scouring surface layer are prepared on the surface of the primer layer by adopting a thermal spraying process, and the method has the advantages of strong controllability in the process, low cost, high spraying efficiency and good coating performance.

Description

technical field [0001] The invention belongs to the field of aero-engines, and in particular relates to a method for preparing an anti-scouring coating of a guide vane made of resin-based composite material. Background technique [0002] For advanced aero-engines, the use of resin-based composite materials instead of metal materials to make guide vanes can achieve significant weight reduction. In actual use, the guide vane mainly plays the role of rectification, flow adjustment and support. During the working process, the guide vanes not only have to withstand high temperatures above 150°C for a long time, but also undergo high-speed erosion of dust particles entrained by high-speed airflow during the engine start / stop process, which can easily cause high-temperature erosion and wear failure of components. [0003] Compared with metal materials, resin-based composite materials have lower hardness and poorer erosion and wear resistance, which have become the main factors lim...

Claims

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Application Information

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IPC IPC(8): C23C4/126C23C4/08C23C4/06B05D7/02B05D7/16B05D7/26B05D1/38
CPCB05D7/02B05D7/16B05D7/26B05D7/584C23C4/06C23C4/08C23C4/126
Inventor 崔永静王长亮汤智慧宇波
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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