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Method for repairing Glare laminate by bonding with modified adhesive

A technology of adhesive and modifier, applied in the direction of surface pretreatment bonding method, adhesive, bonding method, etc., can solve the problems of limited repair performance, large drilling stress concentration, etc., to improve adhesion and cohesion, increase strength, increase the effect of adhesion

Inactive Publication Date: 2020-10-30
SHENYANG AEROSPACE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mechanical repair has its disadvantages, such as large stress concentration caused by drilling, rivet strength will limit the performance of the repair, etc.

Method used

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  • Method for repairing Glare laminate by bonding with modified adhesive
  • Method for repairing Glare laminate by bonding with modified adhesive
  • Method for repairing Glare laminate by bonding with modified adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of graphene-modified adhesive is to the adhesive bonding repairing method that contains impact damage Glare laminate, and implementation steps are as follows:

[0034] In order to implement this embodiment, a complete Glare laminate is prepared first, and then a damaged Clare 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 level; the area o...

Embodiment 2

[0045] A kind of carbon nanotube modified adhesive is to the adhesive repair method of the Glare laminate containing fatigue damage, and the implementation steps are as follows:

[0046] In order to implement this embodiment, a complete Glare laminate is prepared first, and then a damaged Clare 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 simulated, and the simulated damage is at the level...

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Abstract

The invention relates to a method for repairing a Glare laminate by bonding with a modified adhesive, which is characterized by comprising the following steps of: (1) preparing a repairing patch madeof the same material as a motherboard according to the size of a Glare layer motherboard damage area, (2) adding the suspension containing the modifier into an epoxy resin adhesive, and carrying out ultrasonic stirring to prepare a modified adhesive, (3) treating the damaged part of the mother board to be repaired and the surface of the patch, and (4) coating the surfaces of the treated mother board and patch with a modified adhesive, and curing at a preset temperature. The impact resistance of the modified adhesive repairing test piece prepared by the method is better than that of a traditional adhesive repairing result, the modified adhesive repairing test piece is closer to a standard test piece without damage, and in addition, the crack propagation rate after repairing is also lower than that of the traditional adhesive repairing result.

Description

technical field [0001] The invention belongs to the repairing field of fiber metal laminated boards (Glare laminated boards), and in particular relates to a method for enhancing adhesive repairing effects by modifying adhesives with nanoscale materials. Background technique [0002] Glare laminates are the second generation of fiber metal laminates. Its structure is made of glass fibers and aluminum alloys alternately laminated. It not only combines the characteristics of high specific strength and specific stiffness of metals, but also continues the excellent fatigue properties of fiber composites. Features such as high damage tolerance. It is usually widely used in the manufacture of space shuttles as lightweight structural parts. Therefore, repairing the damaged Glare laminate is one of the essential technologies in the aviation industry. Aiming at the problem of repairing Glare laminates, scholars in the field of aviation have developed a variety of repairing technique...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J11/04C09J9/02C09J5/02C09J5/04
CPCC09J163/00C09J11/04C09J9/02C09J5/02C09J5/04C08K3/042C08K3/041
Inventor 王朔丛芳林崔旭孟庆实李晓东曹猛
Owner SHENYANG AEROSPACE UNIVERSITY
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