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Selective Clay Placement within a Silicate Clay-Epoxy Blend Nanocomposite and the Effect on Physical PropertiesMany epoxy systems under consideration for composite pressure vessels are composed of toughened epoxy resins. In this work, epoxy blends containing both rigid aromatic and flexible aliphatic components were prepared, to model toughened systems, and determine the optimum route of silicate addition. Compositions were chosen such that both glassy and rubbery resins were obtained at room temperature. The physical properties of the nanocomposites varied with T(g) and silicate placement, however, nanocomposite T(g)s were observed which exceeded that of the base resin by greater than 10 C. The tensile strength of the glassy resin remained constant or decreased on the dispersion of clay while that of the rubbery material doubled. Selectively placing the clay in the aliphatic component of the rubbery blend resulted in a greater than 100% increase in material toughness.
Document ID
20090013867
Acquisition Source
Glenn Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Miller, Sandi G. (NASA Glenn Research Center Cleveland, OH, United States)
Scheiman, Daniel A (ASRL Cleveland, OH, United States)
Kohlmman, Lee W. (Akron Univ. Akron, OH, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2009
Subject Category
Composite Materials
Report/Patent Number
E-16974
Funding Number(s)
WBS: WBS 561581.02.08.03.15.03
Distribution Limits
Public
Copyright
Public Use Permitted.

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