Air-supported building membrane material and preparation method thereof

According to the air-supported building membrane material and the preparation method thereof, montmorillonite serves as a carrier, titanium dioxide is attached to the surface of the montmorillonite through a hydrothermal method, compared with a direct blending mode, the bonding strength between the titanium dioxide and the montmorillonite is effectively improved, and meanwhile, the air-supported building membrane material has the advantages that the air-supported building membrane material is prepared; the distribution of the titanium dioxide on the surface of the montmorillonite is more uniform; then enabling the surface to contain epoxy groups through the surface complexing action of a silane coupling agent, and grafting polyethyleneimine macromolecules through the cross-linking action of the epoxy groups and amino groups; on one hand, the compatibility between montmorillonite and a polymer is improved by grafting polyethyleneimine macromolecules, on the other hand, the nitrogen and carbon contents of the m