Method of Aerogel Synthesis

摘要

The present disclosure provides a method for producing an aerogel, the method comprising reacting at least one acid monomer with at least one diamino monomer in a first solvent under conditions appropriate to form a polyimide polymer; conducting a solvent exchange wherein the first solvent is exchanged for a second solvent, said second solvent having a freezing point, wherein said solvent exchange further comprises (1) submersing the polyimide polymer in the second solvent in a pressure vessel and (2) creating a high pressure environment inside the pressure vessel for a first period of time; cooling the polyimide polymer to a first temperature below the freezing point of the second solvent; and subjecting cooled polyimide polymer to a first vacuum for a second period of time at a second temperature.

主权项

1. A method of producing an aerogel, the method comprising:
a. reacting at least one acid monomer with at least one diamino monomer in a first solvent under conditions appropriate to form a polyimide polymer; b. conducting a solvent exchange wherein the first solvent is exchanged for a second solvent, said second solvent having an evaporation point, wherein said solvent exchange further comprises (i) submersing the polyimide polymer in the second solvent in a pressure vessel and (ii) creating a high pressure inside the pressure vessel for a first period of time; c. cooling the polyimide polymer to a first temperature below the freezing point of the second solvent; and d. subjecting cooled polyimide polymer to a first vacuum for a second period of time at a second temperature.