Structure−Property Relationships in Porous 3D Nanostructures as a Function of Preparation Conditions: Isocyanate Cross-Linked Silica Aerogels
By M. A. Meador, Lynn A. Capadona, L. McCorkle, D. Papadopoulos, N. Leventis. 2007
168 citations recorded by the source corpus.
Sol−gel-derived silica aerogels are attractive candidates for many unique thermal, optical, catalytic, and chemical applications because of their low density and high mesoporosity. However, their inherent fragility has restricted use of aerogel monoliths to applications in which they are not subject to any load. We have previously reported cross-linking of the mesoporous silica structure of aerogels with di-isocyanates, styrenes, or epoxies reacting with amine-decorated silica surfaces. These approaches have been shown to significantly increase the strength of aerogels with only a small effect on density or porosity. Though density is a prime predictor of properties such as strength and thermal conductivity for aerogels, it is becoming clear from previous studies that varying the silica backbone and size of the polymer cross-link independently can give rise to combinations of properties that cannot be predicted from density alone. Herein, we examine the effects of four processing parameters for producing ...
Subfields: Materials Chemistry, Renewable Energy, Sustainability and the Environment, Spectroscopy
View Paper: https://www.semanticscholar.org/paper/64e3ecc5d22420b3963151fbcd1b792030fc7a12
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Citations in the corpus
- An overview on silica aerogels synthesis and different mechanical reinforcing strategies (2014, methodology): “This multistep liquid-phase based reinforcing approach is quite long due to the solvent exchange process, the slowdiffusion rates of monomers in the wet gel and the heating necessary to promote the reaction of the monomers with the silica surface, which is followed by more solvent exchanges and supe”
- Aerogels in Aerospace: An Overview (2013, background): “X-aerogels have been proven to improve considerably the fractal properties of native aerogels under both quasi-static [43, 93–97] and highimpact loading conditions [98, 99].”