Hydrophobic nano-silica aerogel hemostatic material and preparation method thereof

The invention discloses a hydrophobic nano silicon dioxide aerogel hemostatic material and a preparation method thereof. The hemostatic material comprises a hemostatic layer I, at least one hydrophobic nano silicon dioxide aerogel layer, a hemostatic layer II and a temperature phase change material layer, the hydrophobic nano silicon dioxide aerogel layer is connected with the hemostatic layer I; the hemostatic layer I comprises a dressing base material I and a water-impermeable first hydrophobic nano silicon dioxide aerogel particle layer; the hemostasis layer II comprises a dressing base material II and a second hydrophobic nano silicon dioxide aerogel particle layer capable of permeating water. Silica aerogel materials with different hydrophobicity are formed, and silica aerogel is combined with a temperature phase change material to prepare the hemostatic material. The hemostatic material disclosed by the invention can still effectively promote wound hemostasis in an extreme temperature environment, and i