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Fiber Reinforced Epoxy Resin Composite Materials Using Carboxylate-Alumoxanes as Cross-Linking Agents

Published online by Cambridge University Press:  21 February 2011

Cullen T. Vogelson ,
Yoshihiro Koide  and
Andrew R. Barrona
Cullen T. Vogelson
Affiliation:
Department of Chemistry, Rice University, Houston, Texas 77005
Yoshihiro Koide
Affiliation:
Department of Chemistry, Rice University, Houston, Texas 77005
Andrew R. Barrona
Affiliation:
Department of Chemistry, Rice University, Houston, Texas 77005 Department of Mechanical Engineering and Materials Science, Rice University, Houston, Texas, 7005 http://python.rice.edu/-arb/Barron.html
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Abstract

Chemically functionalized alumina nanoparticles (carboxylate-alumoxanes) are used as the inorganic component of a new class of inorganic-organic hybrid materials. Lysine- or para- hydroxybenzoic acid-derivatized alumoxanes are readily prepared from the reaction of boehmite, [Al(O)(OH)]n, with the appropriate carboxylic acid. The peripheral organic hydroxides and amines of these carboxylate-alumoxanes either react directly with epoxide resins, such as the diglycidyl ether of bisphenol-A (DER 332), to form a hybrid material, or in the presence of an organic resin and hardener system to form a composite material. SEM and AFM show a uniform distribution of alumina nanoparticles within the resin matrix. The properties and cure times of the alumoxane hybrid and composite materials are distinct from both the pure resins and from a physical blend of the resins with traditional ceramic fillers. A significant increase in thermal stability and tensile strength is observed for both the hybrid and composite resin systems. In addition, both carbon fiber and carbon/Kevlar® matting have been successfully incorporated into the hybrid resin systems resulting in further property improvements.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 581: Symposium F – Nanophase & Nanocomposite Materials II , 1999 , 369
Copyright
Copyright © Materials Research Society 2000

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