Reinforced aerogels polymer

Improving Elastic Properties of Polymer-Reinforced Aerogels... 

Scheme 15.2. Fabrication of polymer-reinforced aerogels A. and mechanism of di-isocyanate crossUnking B.

Figure 15.9. SEM images of aerogel monoliths made using 1.65 mol/1 total Si A. uncross-linked and B. polymer-reinforced aerogels prepared using 80 mol% Si from BTMSPA and C. uncrosslinked and D. polymer-reinforced aerogels prepared using 40 mol% Si from BTMSPA. Rqmnted from [38], Copyright 2010 American Chemical...

While there is a trade-off between modulus and elastic recovery in polymer-reinforced aerogels using flexible linking groups, the combination of MTMS and BTMSPA used in the... 

Oh IK, Jung JH, Jeon JH et al (2010) Electro-chemo-mechanical characteristics of fidlerene-reinforced ionic polymer-metal composite transducers. Smart Mater Stmct 19(7) 075009 Palmre V, Brandell D, Maeorg U et al (2009) Nanoporous carbon-based electrodes for high strain ionomeric bending actuators. Smart Mater Stmct 18(9) 095028 Palmre V, Lust E, Janes A et al (2011) Electroactive polymer actuators with carbon aerogel electrodes. J Mater 21 2577-2583... 

As explained previously by Lu et al. [215], there are standard testing methods and equipment that can be employed for reinforced aerogel materiak such as polymer cross-linked ones (X-aerogek), although their standard mechanical characterization does not exist. Flexural tests are carried out in three-point bending mode, normally leading to failure imder tensile bending stresses in... 

M. A. B. Meador, S. L. Vivod, L. Mccorkle, D. Quade, R. M. Sullivan, L. N. Ghson, N. Clark, and L. A. Capaclona, Reinforcing Polymer Cross-Linked Aerogels with Carbon Nanofibers, J. Mater. Chem., 18, 1843-1852 (2008). 

Table 13.3 summarizes the polymeric systems that have been applied to silica. In effect, the underlying inorganic framework plays the role of a structure-directing agent (template). The mechanical property improvement is attributed to reinforcement of the interparticle necks, which are the weak points of the aerogel skeletal framework. In turn, the stabilization provided by the crosslinking polymer is attributed to the extra chemical bonds created by the interparticle polymeric tethers. 

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