| abstract |
The invention provides a polyurethane-silicon hybrid aerogel and a preparation method thereof. Under the catalysis of a polymerization catalyst, a polyether diol and a diisocyanate are subjected to a polymerization reaction to obtain an isocyanate-terminated polyurethane oligomer, and then a monomer is added. Aminosiloxane is obtained by obtaining a siloxane-terminated polyurethane oligomer, then adding an aqueous solution of a gel catalyst, gelling, and the aged wet gel is then subjected to solvent replacement and supercritical drying to obtain. Through a special preparation process, the invention enables the obtained polyurethane-silicon hybrid aerogel to have high resilience performance on the basis of ensuring high temperature performance, and solves the technical problem that the prior art cannot prepare a high resilience aerogel. |