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Surface protection material for engine containment ring

A protective material and containment ring technology, applied in the direction of anti-corrosion coatings, epoxy resin coatings, chloroprene homopolymer coatings, etc., can solve the problems of non-substitution, functional differences, and different use parts

Active Publication Date: 2021-02-19
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to foreign data, the coating materials used for the case around the fan blades (that is, the containment ring) include: abradable coatings, corrosion protection coatings and polymer caulking agents. The above three materials are all used in the containment rings. Specifically Different parts of use have different functions and cannot be substituted for each other
The existing domestically produced protective coating materials cannot meet the process and use requirements of related parts. In order to ensure the development and application of new high-bypass ratio engines, relevant domestic models have developed domestically produced protective coating materials for containment rings by drawing on the ideas of similar foreign products. Development and performance optimization to meet the needs of engine-related components

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 112g of liquid epoxy resin with an epoxy value of 0.48-0.54, 20g of nitrile rubber, 24g of milled asbestos fibers, and 4g of silane coupling agent, and stir them evenly in a mixer to obtain component A of the protective coating;

[0025] Weigh 90g of polyamide resin and 10g of diethylenetriamine, and stir evenly in a mixer to obtain component B of the protective coating;

[0026] Mix components A and B evenly, and then apply it to the surface of the test piece by scraping. After curing, the shear strength of the coating is 12MPa, the tensile strength is 1.62MPa, and the density is 1.18g / ml.

Embodiment 2

[0028] Weigh 120g of liquid epoxy resin with an epoxy value of 0.55-0.56, 18g of nitrile rubber, 20g of milled asbestos fibers, and 2g of silane coupling agent, and stir them evenly in a mixer to obtain component A of the protective coating;

[0029] Weigh 92g of polyamide resin and 8g of triethylenetetramine, and stir evenly in a mixer to obtain component B of the protective coating;

[0030] Mix components A and B evenly, and then apply it to the surface of the test piece by scraping. After curing, the shear strength of the coating is 14MPa, the tensile strength is 1.78MPa, and the density is 1.16g / ml.

Embodiment 3

[0032] Weigh 125g of liquid epoxy resin with an epoxy value of 0.41-0.47, 16g of nitrile rubber, 18g of milled asbestos fiber, and 1g of silane coupling agent, and stir them evenly in a mixer to obtain HM-2100 ring-containing protective coating A component;

[0033] Weigh 95g of polyamide resin and 5g of tetramethylethylenediamine, and stir them evenly in a blender to obtain component B of HM-2100 ring-containing protective coating;

[0034] Mix components A and B evenly, and then apply it to the surface of the test piece by scraping. After curing, the shear strength of the coating is 16MPa, the tensile strength is 1.85MPa, and the density is 1.13g / ml.

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PUM

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Abstract

The invention discloses a surface protection material for an engine containment ring. The surface protection material is a putty-like material composed of a component A and a component B, wherein thecomponent A is prepared from 70-80 wt.% of bisphenol A epoxy resin, 10-20 wt.% of nitrile butadiene rubber, 5-15 wt.% of milled asbestos fiber, 0-5 wt.% of fumed silica and 0.5-2 wt.% of silane coupling agent; and the component B is prepared from 90-99 wt% of polyamide resin and 1-10 wt% of aliphatic amine, wherein the component A and the component B are proportioned according to a mass ratio of 1:1-2:1. When in use, the component A and the component B are uniformly mixed, are applied to the surface of a part by adopting a blade coating method, and are cured to form a protective coating. The protective material has proper bonding strength and good water resistance, does not corrode four metals of TC4, GH232, 2A70 and 0Cr18Ni9Ti, and can be appllied to the inner surface of the engine containment ring.

Description

technical field [0001] The invention relates to a surface protection material, in particular to a surface protection material for an engine containment ring, and belongs to the technical field of composite materials and surface protection. Background technique [0002] As we all know, the aero engine is the "heart" of the aircraft and the driving force for the aircraft to fly in the air. With the rapid development of my country's aviation technology, the engine is required to have higher efficiency. One of the important measures taken to improve engine efficiency is the use of various sealing technologies and protective materials. Especially as the engine bypass ratio continues to increase and the size of related parts increases, higher requirements are placed on the construction technology and performance of the protective coating material used for the containment ring. The casing around the fan blades is generally called the containment ring. Its function is not only the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D111/00C09D5/08C09D7/61
CPCC09D163/00C09D5/08C09D7/61C09D7/70C08L11/00C08K7/12C08K5/54
Inventor 崔海霞陈磊周惠娣陈建敏李红轩
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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