Method of manufacturing high transparent polyester nanofibers sheet

摘要

The present invention relates to a radiation tube (1) for producing a core-sheath type composite nanofiber, which comprises: a composite polyester resin solution and a low-melting polyester solution which are compounded electrospun into a core- The nanofiber sheet made of the core-sheath type composite nanofibers is manufactured and then the produced nanofiber sheet is heat-treated at a temperature at which only the low melting point polyester component as the sheath component is melted in the core-sheath type composite nanofiber, Thereby producing a polyester nanofiber sheet. Since the present invention uses both electrostatic force and centrifugal force at the same time, the core-sheath type composite nanofiber can be produced with high productivity (discharge amount), solvent evaporation and recovery are easy, (Drop phenomenon) of the core-sheath type composite nanofiber sheet is effectively prevented, thereby improving the quality of the core-sheath type composite nanofiber sheet. The polyester nanofiber sheet produced by the present invention is excellent in transparency, conductivity, heat resistance and tensile strength, and can be used as a separator for energy storage fields such as LED, battery, and supercap sheet, a separator for energy generation using solar light, useful.