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Method for repairing Glare laminate by using modified adhesive

An adhesive and modification technology, which is applied in the bonding method of adhesive heating, the bonding method of surface pretreatment, and the adhesive, etc., can solve the problem that the interface bonding performance is not significantly improved and affects the adhesive construction process. performance, the adhesive is difficult to disperse uniformly, etc., to achieve the effects of superior electrical conductivity, increased electrical conductivity, and increased mechanical properties

Active Publication Date: 2020-12-25
SHENYANG AEROSPACE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adding rigid carbon materials such as chopped fibers, carbon nanotubes, and graphene to the adhesive can effectively improve the mechanical strength of the adhesive layer; Interface cracks lead to insignificant improvement of interface bonding performance; in addition, the agglomeration benefit of nanomaterials makes it difficult to disperse uniformly in the adhesive, which affects the construction process performance of the adhesive

Method used

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  • Method for repairing Glare laminate by using modified adhesive
  • Method for repairing Glare laminate by using modified adhesive
  • Method for repairing Glare laminate by using modified adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A carbon nanotube-wrapped chopped carbon fiber modified epoxy resin adhesive to the adhesive repair method of Glare laminates containing impact damage, the implementation steps are as follows:

[0038] In order to implement this embodiment, a complete Glare laminate is prepared first, and then damage to the Glare laminate is simulated to manufacture a damaged Glare laminate. The specific operation method is as follows: firstly, the surface treatment of the aluminum plate is carried out by anodizing method, and then the glass fiber pre-invasion material is laid by spraying adhesive, cured by hot pressing, and processed into the required shape. After that, ultrasonic scanning non-destructive testing should be carried out on the processed test pieces to detect whether there are defects that are not visible to the naked eye during the preparation and processing. The impact damage of Glare laminates was simulated by drop weight impact test. The simulated damage is at a repa...

Embodiment 2

[0049] A carbon nanotube-wrapped chopped composite carbon fiber modified double-horse resin adhesive to the adhesive repair method of Glare laminates containing impact damage, the implementation steps are as follows:

[0050] In order to implement this embodiment, a complete Glare laminate is prepared first, and then damage to the Glare laminate is simulated to manufacture a damaged Glare laminate. The specific operation method is as follows: firstly, the surface treatment of the aluminum plate is carried out by anodizing method, and then the glass fiber pre-invasion material is laid by spraying adhesive, cured by hot pressing, and processed into the required shape. After that, ultrasonic scanning non-destructive testing should be carried out on the processed test pieces to detect whether there are defects that are not visible to the naked eye during the preparation and processing. Through fatigue crack simulation, the damage of Glare laminates under cyclic loading is simulate...

Embodiment 3

[0060] A carbon nanotube-wrapped chopped composite carbon fiber-modified phenolic resin adhesive is used to glue and repair Glare laminates with impact damage. The steps are as follows:

[0061] In order to implement this embodiment, a complete Glare laminate is prepared first, and then damage to the Glare laminate is simulated to manufacture a damaged Glare laminate. The specific operation method is as follows: firstly, the surface treatment of the aluminum plate is carried out by anodizing method, and then the glass fiber pre-invasion material is laid by spraying adhesive, cured by hot pressing, and processed into the required shape. After that, ultrasonic scanning non-destructive testing should be carried out on the processed test pieces to detect whether there are defects that are not visible to the naked eye during the preparation and processing. The impact damage of Glare laminates was simulated by drop weight impact test. The simulated damage is at a repairable damage ...

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Abstract

The invention belongs to the field of repairing of fiber metal laminated plates (Glare laminated plates), and particularly relates to a method for repairing a Glare laminated plate through adhesion ofa modified adhesive. According to the preparation method, a low-cost and low-consumption flame method is adopted to grow a carbon nanotube layer on the surface of the carbon fiber in situ to preparethe carbon nanotube coated composite carbon fiber; the chopped composite carbon fibers are mixed into the adhesive in proportion, so that the bonding strength of the interface between the adhesive layer and the light material and the body strength of the adhesive layer are enhanced, the bonding strength between the mother board and the patch in the repairing process of the Glare laminate is improved, and a better repairing effect is achieved; the patch and the mother board are made of the same material, so that the patch and the mother board are the same in rigidity and have good compatibility. The method is simple, quick and extremely low in cost, and has a wide application prospect in the field of bonding of light materials for aerospace, transportation and the like.

Description

technical field [0001] The invention belongs to the field of repairing fiber metal laminates (Glare laminates), and in particular relates to a method for repairing Glare laminates by bonding chopped composite carbon fiber modified adhesives wrapped in carbon nanotube layers. Background technique [0002] Glare laminate is a fiber-reinforced metal material that is alternately laminated with glass fibers and aluminum alloys. Due to the advantages of high specific strength, good fatigue resistance, high damage tolerance, and good environmental resistance, it is widely used. It is usually widely used in the manufacture of aircraft as a lightweight structural part. Therefore, repairing damaged Glare laminates is one of the essential technologies in the aviation industry. At present, the most widely used Glare laminate repair techniques in the aviation field are mechanical repair and adhesive repair. The disadvantages of mechanical repair include the stress concentration caused...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J5/02C09J5/04C09J5/06C09J11/04C09J163/00C09J179/08C09J161/06
CPCC09J5/02C09J5/04C09J5/06C09J11/04C09J163/00C09J179/085C09J161/06C09J2400/146C09J2400/166C08K9/02C08K9/10C08K7/06C08K3/041
Inventor 崔旭王道晟蒲永伟丛方林赵普熊需海孟庆实王朔李晓东张辰许鹏贺军李威
Owner SHENYANG AEROSPACE UNIVERSITY
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