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Foamed aluminium / PC resin / aluminum alloy laminate composite material and preparation method thereof

A composite material and foamed aluminum technology, which is applied in the field of foamed aluminum/PC resin/aluminum alloy laminated composite material and its preparation, can solve the problems of long molding cycle, poor firmness, easy breakage, etc., and achieves high performance/price ratio, The effect of excellent impact performance and simple process

Active Publication Date: 2005-04-13
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are that raw materials with better fluidity must be used, the product has poor firmness, it is easy to break when being impacted, the cost is high, the molding cycle is long, the surface finish is slightly poor, and the cost of small batch production is high.

Method used

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  • Foamed aluminium / PC resin / aluminum alloy laminate composite material and preparation method thereof
  • Foamed aluminium / PC resin / aluminum alloy laminate composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Aluminum alloy surface treatment:

[0023] Firstly, the surface of the aluminum alloy is shot-peened to obtain a rough surface; 2 CO 3 (40g / L) and Na 2 SiO 3 (20g / L) mixed aqueous solution for decontamination and lye degreasing treatment at a temperature of 70°C for 20 minutes to remove surface grease. The detection method for whether the degreasing time is sufficient or not is to see whether there are residual water drops or thin lines of water flow on the surface. Finally pickling etching treatment, solution formula: concentrated sulfuric acid: sodium dichromate: distilled water is 10:1:20, treat at 60°C for 10 minutes, then rinse with 60°C water, so as to obtain a dense surface oxide layer and Greater surface area. After the above process is completed, the surface etching depth of chromic acid pickling is about 3 μm.

[0024] 2. Aluminum foam surface treatment

[0025] The surface of the foamed aluminum can be decontaminated and degreased with lye. The dec...

Embodiment 2

[0029] 1. Aluminum alloy surface treatment and foamed aluminum surface treatment process are the same as in Example 1;

[0030] 2. Thermoforming

[0031] After the surface treatment is completed, use LY12 aluminum alloy plate, PC resin, and foamed aluminum as raw materials, according to the thickness ratio of aluminum alloy plate / foamed aluminum of 1:5, and the PC resin is subject to filling, and the hot pressing process is carried out. As follows: Place the components of the composite material overlappingly according to the above scheme, heat to 240°C at a rate of 8°C / min, pressurize at the same time, the pressure is 4500N / m2, and keep warm at this temperature for 30 minutes; Heating at a speed of ℃ / min to 265°C; holding at 260°C for 25 minutes, the pressure remains unchanged; after the holding is completed, cool with the furnace.

[0032] The embodiment of the present invention and the performance parameter comparison of polypropylene material are as shown in table 1:

[0...

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PUM

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Abstract

The present invention relates to collision-proof safety material, and is especially composite laminated foamed aluminum / resin / aluminum alloy material and its preparation process. The composite material is used in automobile bumper, casing and other parts. The composite material is prepared with type-LY12 aluminum alloy plate and foamed aluminum in the thick ratio of 1 to 3-5 as well as filled PC resin and through hot pressing curing process. The present invention has excellent impact performance, no technological problem of painting on the surface of aluminum alloy, simple technological process, small density, high specific strength, high specific rigidity, high performance / cost ratio and flexible performance design.

Description

technical field [0001] The invention relates to a new type of collision safety material, in particular to foamed aluminum / PC resin / aluminum alloy laminated composite material and a preparation method thereof, which can be used for parts such as automobile bumpers and shells. Background technique [0002] Most of the automobile bumpers currently produced in our country are still the simple metal plate parts of the past, which are easily deformed in the event of a collision, and have no insurance effect, and some are only decorative. [0003] "Materials. Processes. Equipment" "Energy Absorption Characteristics of Foamed Metal Aluminum for Automobile Bumpers" mentions that foamed aluminum is a very ideal material as a cushioning material for impact energy absorption. [0004] In the third issue of "Yunnan Chemical Industry" in 1997, "Development of Modified Bulk Polypropylene Automobile Bumper Material", it is mentioned that the organic peroxide cross-linking system is used to ...

Claims

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Application Information

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IPC IPC(8): B32B7/04
Inventor 赵玉涛程晓农戴起勋金明江
Owner JIANGSU UNIV
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