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Wirkungsweisen nanoskaliger Böhmite in einem Polymer und seinem Kohlenstofffaserverbund unter Druckbelastung

Arlt, Christine (2011) Wirkungsweisen nanoskaliger Böhmite in einem Polymer und seinem Kohlenstofffaserverbund unter Druckbelastung. Dissertation, Otto-von-Guericke Universität Magdeburg.

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Abstract

Increasing ecological awareness as well as quality and safety demands, which are present, for instance, in the aerospace and automotive sectors, lead to the need to use more sophisticated and more effective materials. For that purpose, laminates of carbon fiber reinforced plastic (CFRP), which are manufactured by injection technology, are reinforced with boehmite particles. This doping strengthens the laminates, whose original properties are weaker than prepregs. Besides the shear strength, compression strength and the damage tolerance, the mode of action of the nanoparticles in resin and in CFRP is also analyzed. It thereby reveals that the hydroxyl groups and even more a taurine modification of the boehmites’ surface alter the elementary polymer morphology. Consequently a new flow and reaction comportment, lower glass transition temperatures and shrinkage, as well as a changed mechanical behavior occur. Due to a structural upgrading of the matrix (higher shear stiffness, reduced residual stress), a better fiber-matrix adhesion, and differing crack paths, the boehmite nanoparticles move the degradation barrier of the material to higher loadings, thus resulting in considerably upgraded new CFRP.

Document Type:Thesis (Dissertation)
Additional Information:ISSN 1434-8454
Title:Wirkungsweisen nanoskaliger Böhmite in einem Polymer und seinem Kohlenstofffaserverbund unter Druckbelastung
Authors:
AuthorsInstitution or Email of Authors
Arlt, Christinechristine.arlt@dlr.de
Date:September 2011
Journal or Publication Title:DLR Forschungsbericht
Number of Pages:159
Status:Published
Keywords:Nanocomposite, Boehmite Nanoparticles, Interphases, Carbon Fiber Reinforced Plastic (CFRP), Compression Strength, Compression after Impact (CAI), Toughening, Fiber-Matrix-Adhesion
Institution:Otto-von-Guericke Universität Magdeburg
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures & Materials
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Multifunctional Materials
Deposited By: Dr. Christine Arlt
Deposited On:10 Apr 2012 07:45
Last Modified:10 Apr 2012 07:45

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