Addressing the Aerogel Fragility by Compounding with Polymers

Addressing the Aerogel Fragility by Compounding with Polymers 

Ensuring Formation of Class ll-Model 2 Aerogels by Polymer Crosslinking of Preformed 3D Networks of Nanoparticles 

Crosslinking of Hydroxyl-Rich Surfaces with Isocyanate-Derived Polymers 

In direct extension of Class II-Model 1 aerogels implemented with di-isocyanates [47, 48], the first examples of polymer-crosslinked aerogels employed the same chemistry [46]. Isocyanates used were Desmodur N3200 (a di-isocyanate) and Desmodur N3300A 

Flguro 13.2. Scanning electron micrographs iSEM) at random spots in the interior of a riactuied native silica aerogel monolith (A., pb = 0.169 gem ) and after the skeletal network was coated (crosslinked) widi Desmodur N3200-derived polyurea (B., Pb = 0.380 g cm ). 

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