The invention provides an electrostatic
spinning nanofiber membrane as well as a preparation method thereof. The electrostatic
spinning nanofiber membrane provided by the invention comprises a
fiber membrane obtained by electrostatically
spinning a high-melting-point
polymer and a
fiber membrane obtained by electrostatically spinning a low-melting-point
polymer, wherein the difference on the melting points of the high-melting-point
polymer and the low-melting-point polymer is not less than 10 DEG C. The electrostatic spinning
nanofiber membrane provided by the invention is multipurpose and can be applied to the fields such as biomedicines, energy and
chemical industry, gas and liquid
filtration, waterproofness and windproofness, windproofness and heat insulation,
moisture permeability and ventilation, environmental management and
semiconductor sensors. According to the electrostatic spinning nanofiber membrane provided by the invention, electrostatic spinning is respectively carried out on the high-melting-point polymer and the low-melting-point polymer, and the high-melting-point polymer
fiber membrane and the low-melting-point polymer fiber membrane obtained are composited and hot-pressed to obtain the electrostatic spinning nanofiber membrane. The preparation method provided by the invention is high in production efficiency and low in
energy consumption, and is suitable for industrial production.