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Fiber metal laminate composite material and preparation method thereof

A technology of fiber metal laminates and composite materials, applied in the direction of metal layered products, chemical instruments and methods, lamination, etc., can solve the problems of reducing the porosity of laminates in the molding process, shorten the preparation time, and improve the interface bonding The effect of strength and easy operation

Active Publication Date: 2021-05-28
BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method only improves the interface bonding strength through physical methods (anodizing) and chemical methods (surface modification and preparation of its metal complexes), and does not improve the molding process to reduce the porosity of the laminate.

Method used

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  • Fiber metal laminate composite material and preparation method thereof
  • Fiber metal laminate composite material and preparation method thereof
  • Fiber metal laminate composite material and preparation method thereof

Examples

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preparation example Construction

[0059] The invention provides a fiber metal laminate composite material and a preparation method thereof. Firstly, the metal plate is anodized, and the metal sheet and the thermoplastic composite material prepreg are laid alternately, and then the high-power push-pull The ultrasonic generator performs ultrasonic treatment on the fiber metal laminate for a certain period of time. On the one hand, it helps to eliminate the tiny bubbles inside the resin and reduce the porosity. strength. Finally, cooling and forming laminate products are carried out. The process mainly includes the steps of surface treatment of metal sheets, lamination, preheating, ultrasonic treatment, pressurization, and cooling.

[0060] Such as Figure 4 As shown, the above-mentioned thermoplastic fiber metal laminate preparation process specifically includes the following steps:

[0061] 1) Metal sheet surface treatment: the metal sheet is sequentially degreased, pickled, anodized, and primer sprayed.

...

Embodiment 1

[0071] The metal plate used in Example 1 of the present invention is an aluminum alloy (2024) thin plate, and the thermoplastic composite material is glass fiber-reinforced polyphenylene sulfide (GF / PPS) prepreg, and the fiber is braided. A 2 / 1 or 3 / 2 ply structure is adopted, that is, a layer of GF / PPS prepreg is added between two layers of aluminum alloy sheets.

[0072] Concretely consists of the following steps:

[0073] 1. The aluminum alloy surface treatment process is as follows:

[0074] a) Preliminary preparation: wipe off the oil on the surface of the test piece with absolute alcohol or acetone;

[0075] b) Alkali cleaning: wash with alkaline washing solution at a temperature of 60°C for 90s;

[0076] c) Rinse: Rinse in overflowing clean tap water for 2 minutes;

[0077] d) Acid cleaning: pickle the test piece in the pickling solution for 3 minutes;

[0078] e) Rinsing: Rinse in overflowing tap water for at least 5 minutes;

[0079] f) Phosphoric acid anodizatio...

Embodiment 2

[0093] The difference between embodiment 2 and embodiment 1 is that the glass fiber reinforced polyphenylene sulfide resin layer used is a laminate of alternately arranged glass fibers and polyphenylene sulfide films. When preparing the laminate, the aluminum alloy sheet, glass fiber and thermoplastic resin (polyphenylene sulfide) film are laminated alternately. In step 2, increase the thermoplastic resin film layering process: keep the pressure applied by the indenter at 0.1MPa during the laying process; start the high-power push-pull ultrasonic generation controller with a frequency of 20kHz and an amplitude of 40μm, laying according to the design In the laying direction, the thermoplastic resin film and the underlying material are laid together.

[0094] At the same time, the pressure applied to the metal layer is 1MPa, so as to realize the full infiltration of the glass fiber by the polyphenylene sulfide resin. Other processes and process conditions are the same as in Exa...

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Abstract

The invention discloses a fiber metal laminate composite material and a preparation method thereof, and belongs to the field of preparation and forming of advanced composite materials. The method comprises the steps that metal sheets are taken, and the surfaces of the metal sheets are sequentially subjected to degreasing treatment, acid pickling, anodic oxidation treatment and primer spraying; the metal sheets and fiber resin layers are alternately laid on a working platform through ultrasonic-assisted rolling equipment, ultrasonic treatment and rolling are carried out layer by layer in the laying process, and a formed fiber metal laminate is cooled after laying is completed; and after the formed fiber metal laminate is cooled to the room temperature, the working platform is opened, and the prepared fiber metal laminate composite material is taken out. According to the invention, original ultrasonic-assisted rolling equipment is adopted for conducting ultrasonic treatment on the fiber metal laminate through ultrasonic vibration, the ultrasonic consolidation additive manufacturing method does not need an autoclave procedure, the preparation time is shortened, and the preparation efficiency is improved.

Description

technical field [0001] The invention specifically relates to a fiber metal laminate composite material and a preparation method thereof, belonging to the field of preparation and forming of advanced composite materials. The invention uses hot rolling and ultrasonic vibration to prepare thermoplastic resin-based fiber metal laminates, which can significantly improve the interlayer performance of the laminates while improving the preparation efficiency. Background technique [0002] The existing preparation methods of thermoplastic FMLs can be divided into two categories according to the equipment used, autoclave method and non-autoclave method. The former uses the uniform temperature field and air pressure inside the tank to heat and press the composite material. The fiber-reinforced thermoplastic composite material formed by this method has low porosity, uniform resin content, and dense internal structure. However, due to the high melting point and high viscosity of thermop...

Claims

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Application Information

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IPC IPC(8): B32B15/08B32B15/14B32B37/06B32B37/08B32B37/10B32B37/12B32B38/18C23F17/00C23G1/02C25D11/02B29C65/08B32B7/08B32B7/12B32B37/00
CPCB32B15/14B32B15/08B32B7/12B32B7/08B32B37/10B32B37/08B32B37/1284B32B37/06B32B38/18B32B38/1816C23F17/00C23G1/02C25D11/02B29C65/08B32B37/003B32B2250/42B32B2262/02Y02P10/25
Inventor 葛增如刘建光彭俊阳王卫东陈鑫张嘉振
Owner BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC
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