The invention discloses a preparation method and device for a three-dimensional support for
spinning by utilizing gas-
electro spinning based on negative-pressure collection. A device comprises an alternating-current high-
voltage generator, a liquid supply device, a gas liquid device, a coaxial
sprayer and a negative-pressure collecting device. The coaxial
sprayer is provided with a liquid outlet and a gas outlet. The
gas supply device is used for conveying a
spinning solution or melts to the coaxial
sprayer and enabling melts to flow out of the liquid outlet. The gas liquid device can generate air flow blowing from the liquid outlet to the negative-pressure collecting device via the liquid outlet. The alternating-current high-
voltage generator can form an alternating
electric field between the coaxial sprayer and the negative-pressure collecting device. The negative-pressure collecting device comprises a collector, a negative-
pressure pipe and a negative-pressure generator. The
spinning solution or melts
form solution jet flow or melt
jet flow in the coaxial sprayer and the collector under effect of
airflow and the alternating
electric field.The preparation method and device for the three-dimensional support for spinning by utilizing gas-
electro spinning based on negative-pressure collection have following beneficial effects: by adoption of spinning technology based on the negative-pressure collector, the
nanofiber three-dimensional support featuring a broad range of preparation material, small
fiber diameters, uniformly-distributed filament diameters, a loose structure, great thickness and superior mechanical properties is obtained and has great technological universality.