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Preparation and Performance Research of Ti/CF/PPEK Laminates

Author: FanYu
Tutor: LiuWenBo
School: Harbin Institute of Technology
Course: Materials Science
Keywords: Ti / CF / PPEK Preparation Mechanical Properties Interface Analysis
CLC: TB331
Type: Master's thesis
Year: 2008
Downloads: 59
Quote: 1
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Abstract


The fiber metal laminate plate (Fiber-Metal Laminates, referred FMLs) is alternately laying a thin metal sheet layer and a fibrous composite material layer after the formation of a layer at a certain temperature and pressure between the hybrid composite system. FMLs a combination of the characteristics of the the traditional fiber composite material and a metal material, to make up for the deficiencies of the single composite materials and metal materials, and not only has a high specific stiffness and strength, but also has the toughness and workability of the metal material, and FMLs excellent fatigue performance and damage tolerance, making it the ideal choice for aircraft structural materials needed. FMLs have been widely used in foreign countries, while domestic for FMLs research, especially thermoplastic fiber metal laminated plates yet systematically studied. Ti / CF / PPEK composite laminated plates is a new high-performance thermoplastic fiber-metal composite layer plywood, molding process of the preparation of this composite laminated plates, several basic mechanical properties and interface structure of the research and discussion, so as to further research and applications such as high-performance thermoplastic composite laminated plates provide certain reference. Aspects of the exploratory research work from the selection of raw materials of the laminated plates, the surface of the sheet metal processing, the preparation of the thermoplastic composite material layer prepreg, the preparation of the film, and a Ti / CF / PPEK thermoformed composite laminated board resolve the preparation process of Ti / CF / PPEK composite laminated plates, and successfully prepared Ti / CF / PPEK composite laminated plates. On this basis, the reference fiber reinforced composites performance test standard of Ti / CF / PPEK composite laminated plates at room temperature tensile, bending and interlaminar shear performance testing and analysis. Study found unidirectional continuous fiber added Ti / CF / PPEK and composite laminated plates do longitudinal tensile properties of the layer plywood and bending performance is improved, but the damage is less than ideal form, interlaminar cracking failure modes, analysis believed to be primarily due to the interfacial bonding of the composite material layer and the metal layer is less than ideal condition, and the damage caused in the process of the test piece caused by. The interface is a composite extremely important micro-structural laminated plates performance and stress passed all depends on the interface status, interface there is conducive to a deeper understanding of laminated plate structures and laminated plates performance of the play mechanism, therefore this article can also take advantage of the The scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) interface status and structure of laminated plates, the results show that the bonding of the metal fiber composite is less than ideal, and needs further preparation process and interface composite mechanism of in-depth study.

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CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Composite materials > Metal composite materials
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