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Gluing method for avoiding delaminating between foam plastic core and metal envelope

A foam plastic and metal technology, applied in the field of aircraft composite material manufacturing, can solve the problems of delamination and easy delamination between foam plastic core and metal skin, foam plastic core and metal skin, etc., so as to reduce the repair rate and Scrap rate, low cost, quality assurance effect

Inactive Publication Date: 2016-11-23
SHAANXI AIRCRAFT CORPORATION
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AI Technical Summary

Problems solved by technology

[0004] In the development and production process of composite products, it is often encountered that the foamed plastic core is used as a filling material to bond the metal skin. The conventional bonding process is easy to cause delamination between the foamed plastic core and the metal skin. Now Existing technology cannot solve the problem of easy delamination between the foam plastic core and the metal skin

Method used

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  • Gluing method for avoiding delaminating between foam plastic core and metal envelope

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Embodiment Construction

[0018] The present invention will be described in further detail below.

[0019] see figure 1 , which is a schematic diagram of the bonding of the foamed plastic core and the metal skin of the present invention.

[0020] The present invention solves the gluing method for the delamination of the foam plastic core and the metal skin, and its specific process is as follows:

[0021] Step 1: Treatment of the surface to be glued

[0022] Firstly, the metal skin and the surface to be bonded of the foam plastic core placed on the forming flat mold tooling are polished to increase the contact area of ​​the surface to be bonded and the combination of the metal ion and the epoxy bond in the epoxy resin on the microscopic level ;

[0023] Then use a fine white cotton cloth soaked in a volatile solvent (conventional volatile solvents such as acetone, alcohol, etc.) to wipe and clean the surface to be glued between the foam plastic core and the metal skin, replace the fine white cotton ...

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Abstract

The invention belongs to the field of aircraft composite material manufacturing and relates to a bonding method for solving the delamination of a foam plastic core and a metal skin. In the method of the invention, the foamed plastic core and the metal skin are bonded by laying high-strength glass cloth and brushing epoxy resin glue, and then realize the bonding and curing between the two by vacuum pressure. The invention can solve the frequent delamination problem after the foam plastic core and the metal skin are glued together in the closed structure of the aircraft, effectively guarantee the quality of parts manufacturing, and greatly reduce the repair rate and scrap rate of such parts , and easy to implement, wide adaptability and low cost.

Description

technical field [0001] The invention belongs to the field of aircraft composite material manufacturing and relates to a bonding method for solving the delamination of a foam plastic core and a metal skin. Background technique [0002] The adhesive connection process is the most commonly used connection method for composite structural parts. This method uses adhesives to connect parts into a non-detachable whole. With the development of aerospace technology, bonding technology is increasingly widely used in aerospace products. The use of adhesive joints to replace traditional riveting, bolting and welding can reduce the weight of structural parts, the shape is smooth and smooth, and the fatigue strength is improved. It can also connect two different materials and has good chemical corrosion resistance. It is most suitable for connecting thin walls. Sandwich structure, simple bonding process, can shorten the production cycle and so on. Today's adhesive bonding technology con...

Claims

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Application Information

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IPC IPC(8): B32B37/12B32B37/10B32B38/00B32B17/02B32B17/06B32B15/00B32B17/10B32B5/18B32B7/12B32B33/00B64C1/12B64G1/00
CPCB32B37/12B32B5/245B32B7/12B32B15/14B32B37/1018B32B38/0012B32B2037/1253B32B2038/0016B32B2262/101B32B2266/02B32B2605/18B64C1/12B64G1/00
Inventor 魏耀华徐猛徐勇杨勇张强王洋祖峰潘文进
Owner SHAANXI AIRCRAFT CORPORATION
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