Nanofiber air filtering material with PVDF branch structure, and preparation method thereof
The invention discloses a nanofiber air filtering material with a PVDF branch structure, and a preparation method thereof. According to the invention, an inorganic salt (LiCl) is added into a high polymer solution, wherein the addition of the inorganic salt is beneficial to enhancing the conductivit...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a nanofiber air filtering material with a PVDF branch structure, and a preparation method thereof. According to the invention, an inorganic salt (LiCl) is added into a high polymer solution, wherein the addition of the inorganic salt is beneficial to enhancing the conductivity of the solution, the electric field force of jet flow in an electric field is increased based on the increased conductivity of the solution, a splitting phenomenon is generated in a high-voltage electric field, and the fibers are split and forked to form branch-trunk-shaped nanofibers; the preparation method comprises the following steps: spinning PVDF branch structure nanofibers onto a black high-mesh polyester non-woven fabric through an electrostatic spinning method, and performing an ultrasonic bonding process on the black high-mesh polyester non-woven fabric and a PP melt-blown non-woven fabric to obtain the nanofiber air filtering material; the composite material has a filtering effect as high as 90%, and i |
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