The invention provides a preparation method of high strength and high water resistance aerogel material, which comprises the following steps: mixing calcium carbonate powder and thermoplastic polymer evenly according to the mass ratio of (1 ‑ 6): 20, placing them in a twin-screw granulator for granulation to obtain a mixed master batch; Mix the mixed masterbatch with cellulose acetate in a predetermined ratio, then melt and extrude it in a twin-screw extruder to obtain fiber precursor; First, extract the fiber precursor in an organic solvent, and then wash it in dilute hydrochloric acid to obtain nanofibers; The nanofiber is emulsified to obtain the fiber dispersion, and then the fiber dispersion is frozen and dried to obtain the aerogel material. In the invention, an appropriate amount of calcium carbonate is dispersed in the aerogel, so that the calcium carbonate is combined with the surface hydroxyl of polyvinyl alcohol ‑ ethylene copolymer through the hydrogen bond to improve the strength of the aerogel; The aerogel obtained has certain water resistance.
Country Code: CN
Application Number: CN202111674600.2
