A light alloy and composite material high-efficiency heterogeneous joint and its preparation method

A light alloy and composite material technology, applied in the direction of chemical instruments and methods, metal layered products, synthetic resin layered products, etc., can solve the problems of environmental pollution, expensive, performance damage of connectors, etc., to achieve short construction period, Low cost and enhanced mechanical strength

Active Publication Date: 2021-06-04
SHENYANG AEROSPACE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these surface treatment techniques are all damage treatments, which have certain damage to the performance of the connector itself. In addition, expensive equipment is required and there is a risk of polluting the environment.

Method used

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  • A light alloy and composite material high-efficiency heterogeneous joint and its preparation method
  • A light alloy and composite material high-efficiency heterogeneous joint and its preparation method
  • A light alloy and composite material high-efficiency heterogeneous joint and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for preparing a light alloy and composite material high-efficiency heterogeneous joint, comprising the following steps:

[0038] Step 1: Light alloy surface pretreatment

[0039] The titanium alloy sample is polished with 400 mesh sandpaper to obtain the pretreated titanium alloy;

[0040] Step 2: Preparation of CNT layer by flame method

[0041] A nickel nitrate solution with a substance concentration of 1 mol / L is evenly sprayed on the surface of the polished titanium alloy through a spray gun, and dried to obtain a catalyst-loaded titanium alloy;

[0042] Put the catalyst-loaded titanium alloy to be welded at the position where the temperature of the alcohol flame is 1000 ° C, stay for 10 minutes, and generate an intertwined CNT layer on the surface of the titanium alloy to be bonded, and prepare a titanium alloy with a CNT layer; for the preparation The loaded CNT layer titanium alloy was subjected to SEM scanning analysis, and the SEM image of the CNT la...

Embodiment 2

[0047] A method for preparing a light alloy and composite material high-efficiency heterogeneous joint, comprising the following steps:

[0048] Step 1: Light alloy surface pretreatment

[0049] Polish the aluminum alloy sample with 400 mesh sandpaper to obtain the pretreated aluminum alloy;

[0050] Step 2: Preparation of CNT layer by flame method

[0051] A nickel nitrate solution with a substance concentration of 1 mol / L is evenly sprayed on the surface of the polished aluminum alloy through a spray gun, and dried to obtain a catalyst-loaded aluminum alloy;

[0052] Put the catalyst-loaded aluminum alloy to be welded at the position where the temperature of the alcohol flame is 800 ° C, stay for 10 minutes, and generate intertwined CNT layers on the surface of the aluminum alloy to be bonded, and prepare the CNT-loaded aluminum alloy.

[0053] Step 3: Preparation of efficient heterogeneous joints in lightweight alloys and composites

[0054] Place the first PEI film, sta...

Embodiment 3

[0057] A method for preparing a light alloy and composite material high-efficiency heterogeneous joint, comprising the following steps:

[0058] Step 1: Light alloy surface pretreatment

[0059] The titanium alloy sample is polished with 400 mesh sandpaper to obtain the pretreated titanium alloy;

[0060] Step 2: Preparation of CNT layer by flame method

[0061] A nickel nitrate solution with a substance concentration of 1 mol / L is evenly sprayed on the surface of the polished titanium alloy through a spray gun, and dried to obtain a catalyst-loaded titanium alloy;

[0062] Put the catalyst-loaded titanium alloy to be welded at a position where the temperature of the alcohol flame is 1000 ° C, and stay for 20 minutes, and generate intertwined CNT layers on the surface of the titanium alloy to be bonded, and prepare a titanium alloy with a CNT layer.

[0063] Step 3: Preparation of efficient heterogeneous joints in lightweight alloys and composites

[0064] Place the first P...

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Abstract

A light alloy and composite material high-efficiency heterogeneous joint and a preparation method thereof belong to the field of aviation material connection. In the light alloy and composite material high-efficiency heterogeneous joint, a first thermoplastic resin film, an insulating thermoplastic fiber prepreg, a heating element, and a second thermoplastic resin film are sequentially arranged between the light alloy surface CNT layer and the thermoplastic composite material ;The heating element is close to the thermoplastic composite side. The preparation method is as follows: through the flame synthesis process, the CNT layer is grown in situ on the surface of the light alloy, and an insulating thermoplastic fiber prepreg, a heating element, and a thermoplastic resin film are set between the light alloy and the composite material, and melted by resistance heating Adhesive process for preparation. The high-efficiency heterogeneous joints of lightweight alloys and composite materials prepared by this method have excellent mechanical strength, the implementation process is simple, efficient, fast, green and environmentally friendly, and the cost is extremely low. Wide application prospects.

Description

technical field [0001] The invention relates to the technical field of aviation material connection, in particular to a high-efficiency heterogeneous joint of light alloy and composite material and a preparation method thereof. Background technique [0002] Lightweight alloys and composite materials are the two most important structural materials in the aviation field; except for landing gear and engines, most structures of aircraft are made of lightweight alloys and composite materials; therefore, the relationship between lightweight alloys and composite materials The connection of the aircraft is an inevitable and important link in the aircraft manufacturing process. Mechanical fastening and adhesive bonding are currently the two most commonly used techniques for joining dissimilar materials. However, the mechanical fastening connection needs to drill holes in lightweight alloys and composite materials, which can easily lead to delamination defects in composite materials ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/28B32B27/20B32B27/06B32B15/02B32B15/18B32B15/08B32B17/02B32B17/06B32B17/10B32B9/00B32B9/04B32B15/00B32B27/04B32B38/00B32B38/16B32B37/06B32B37/10B32B37/00B29C65/34
CPCB29C65/34B29C65/3476B29C66/112B29C66/41B29C66/929B32B5/02B32B9/00B32B9/041B32B9/045B32B15/00B32B15/02B32B15/08B32B15/14B32B15/18B32B27/08B32B27/12B32B27/20B32B27/28B32B37/00B32B37/06B32B37/10B32B38/00B32B38/0036B32B38/164B32B2255/06B32B2255/20B32B2260/021B32B2260/046B32B2262/101B32B2307/206B32B2311/18B32B2311/30B32B2313/04B32B2386/00
Inventor 熊需海任荣赵普姬书得胡为
Owner SHENYANG AEROSPACE UNIVERSITY
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