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Method for repairing debond of high-density honeycomb block of honeycomb sandwich structure of aluminum deck

A honeycomb interlayer and high-density technology, which is applied in the repair field of debonding of high-density honeycomb blocks in the honeycomb sandwich structure of aluminum panels, can solve the defects that affect the repair quality, debonding, delamination, and affect the bonding of high-density honeycomb blocks and aluminum panels Strength and other issues, to reduce the difficulty of repair, prevent incomplete curing, and easy to operate

Inactive Publication Date: 2016-07-20
HARBIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When rebonding the high-density honeycomb block, the bonding strength between the high-density honeycomb block and the aluminum panel is affected by the curing quality of the film, and debonding and delamination defects are prone to occur, which seriously affects the repair quality

Method used

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  • Method for repairing debond of high-density honeycomb block of honeycomb sandwich structure of aluminum deck
  • Method for repairing debond of high-density honeycomb block of honeycomb sandwich structure of aluminum deck
  • Method for repairing debond of high-density honeycomb block of honeycomb sandwich structure of aluminum deck

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Experimental program
Comparison scheme
Effect test

Embodiment

[0035] Pre-repaired disbonded area is diameter high-density honeycomb block,

[0036] 1. Paint removal

[0037] Take the debonded area as the center, remove the paint layer 30mm larger than the edge of the debonded area, and use 180-240# sandpaper to polish the area to be repaired until the metal surface of the aluminum panel (1) is exposed, but the aluminum panel must not be damaged.

[0038] 2. Clean up and isolate

[0039] Wipe the depainted part of the aluminum panel (1) with a clean linen cloth dipped in methyl ethyl ketone until there is no stain on the linen cloth. Protect the area to be repaired, and use tape to isolate and protect the outside of the paint stripped area.

[0040] 3. Remove the aluminum panel in the repair area

[0041] Drill a Φ5.2mm hole in the center of the debonded area of ​​the high-density honeycomb block (4), centering on the hole, remove the aluminum panel (1) there with a drill with the same diameter as the high-density honeycomb block;

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Abstract

The invention belongs to a repair technology for a composite material and relates to a repair method applicable to debond of a high-density honeycomb block of a honeycomb sandwich structure of an aluminum deck. When debond of the high-density honeycomb block of the honeycomb sandwich structure of the aluminum deck is repaired, the method comprises the steps of removing the high-density honeycomb block and the aluminum deck in a debond area of the high-density honeycomb block, reinstalling an insert, bonding a metal patch to surfaces of the insert and the aluminum deck with the adhesive EA9396. The repair method is simple and easy to operate and solves the problem of debond occurring easily in the traditional repair method. The repair method can perform repair at the normal temperature condition of 18-23 DEG C, the repair difficulty is reduced effectively, the repair quality stability is improved, incomplete curing of an adhesive film is prevented, the operation is easy, and debond and layering defects easily occurring in a repair process are overcome.

Description

technical field [0001] The invention belongs to composite material repair technology, and relates to a repair method suitable for debonding of a high-density honeycomb block of an aluminum panel honeycomb sandwich structure. Background technique [0002] The debonding of the high-density honeycomb block of the aluminum panel honeycomb sandwich structure is traditionally repaired by removing the aluminum panel skin and the high-density honeycomb block, and rebonding the high-density honeycomb block and the aluminum panel skin. When rebonding the high-density honeycomb block, the bonding strength between the high-density honeycomb block and the aluminum panel is affected by the curing quality of the film, and debonding and delamination defects are prone to occur, which seriously affects the repair quality. Contents of the invention [0003] The purpose of the present invention is to provide a repair method for debonding of high-density honeycomb blocks of aluminum panel hone...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C73/02B29C73/04
CPCB29C73/02B29C73/04
Inventor 康健张凯李昕泽
Owner HARBIN
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