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- 저자 : Rutchaneekorn Wongpajan (검색결과 1 건)
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Development of Cotton Candy Method for High Productivity Polypropylene Fibers Webs
Rutchaneekorn Wongpajan,Supaphorn Thumsorn,Hiroyuki Inoya,Masayuki Okoshi,Hiroyuki Hamada 한국섬유공학회 2018 Fibers and polymers Vol.19 No.1
The cotton candy method (CoCAM) is developed for high productivity of polymer micro- and nano-fibers. Polypropylene was molten in a single screw extruder of the CoCAM at air pressures of 0.2-0.5 MPa with nozzle temperatures of 280-350 ℃ and the constant air temperature of 600 ℃. The distance from the nozzle to the collector was set at 10-90 cm. Thermal images informed the accumulation of PP fibers flows at shorter collector distance. The diameters of PP micro-fibersdecreased with increasing the air pressures and the nozzle temperatures. Crystallinity of the PP micro-fibers increased when increasing the nozzle temperature due to higher occasion of molecular orientation. The degree of the fiber entanglement in the PP micro-fibers decreased when increasing the collector distance, which affected on the declination of tensile strength. Ductility of the PP micro-fibers improved at high collector distances. The optimum condition of the PP micro-fibers was found at the average diameter of 2.3 μm at 0.5 MPa with the nozzle temperature of 340 ℃ collected at 60 cm. The productivity of the PP micro-fibers webs from the CoCAM was 144 g/h.
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