Patent ID: 11878911
Assignee: TAIWAN AEROGEL TECHNOLOGY MATERIAL CO., LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A method for producing a hydrophilic aerogel, comprising:
a mixing step, wherein a reaction solution is prepared by mixing an alkoxysilane with a solvent;
a hydrolysis step, wherein an acid catalyst is added into the reaction solution for hydrolysis reaction;
a condensation dispersion step, wherein an alkali catalyst is added into the reaction solution to initiate condensation reaction, and during the condensation reaction, a hydrophobic disperse solvent is added and the reaction solution is stirred at a stirring rate from 100 to 500 rpm to form an uniform wet gel structure of aerogel;
an aging step, wherein the uniform wet gel structure of aerogel is stabilized under a temperature from 20° C. to 80° C. to form an aged aerogel;
a disintegration dispersion step, wherein the aged aerogel is dispersed in a hydrophobic dispersion solvent, and then the aged aerogel is broken into particles with a diameter ranging from several millimeters to dozens of millimeters;
a solvent exchange step, wherein ambient pressure and a temperature from 50° C. to 160° C. are introduced to make the aerogel completely transparent or transparent with a tint of blue light; and
a solvent evaporation step, wherein the hydrophobic dispersion solvent is removed by a distillation at a temperature from 70° C. to 150° C. or filtered by filter, and then the aerogel is dried to obtain the hydrophilic aerogel.