| abstract |
The method for preparing a carbon aerogel whose density is regulated by a spatially confined centrifugal force field disclosed in the present invention is specifically: step 1, mixing carbon nanotubes, surfactants and water uniformly; step 2, mixing the carbon nanotubes obtained in step 1 The mixed solution was ultrasonically oscillated and left to stand, to retain the solids remaining in the lower layer; step 3, mix resorcinol, formaldehyde, sodium carbonate and water evenly; step 4, add the mixed solution obtained in step 3 to the mixed solution obtained in step 2 In the remaining solid B, stir evenly; step 5, prepare wet gel; step 6, prepare alcohol gel; step 7, freeze-dry the alcohol gel obtained in step 6; step 8, put the aerogel into Carbon aerogel can be obtained by carbonization at high temperature in a tube furnace. The carbon aerogel has the advantages of high porosity, large density variation range, and continuously adjustable density. |