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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.
Mechanical and Physical Properties of Roof Tile Prepared from Sugar Cane Fiber
Wong on, Jessada,Surin, Prayoon,Apawet, Chaiyaprek,Eidhed, Krittee,montra, Sunate,Aumkongthum, Kaichai,Thumsorn, Supaphorn The International Promotion Agency of Culture Tech 2015 International Journal of Advanced Culture Technolo Vol.3 No.1
Sugar cane, renewable fiber resources, were used for roof tile production. Urea formaldehyde, phenol formaldehyde and isocyanate resin were used as binders in this study. Roof tile specimens with 400 mm wide, 400 mm long and 5 mm thick were prepared by compression molding. Physical and mechanical properties of the specimens were analyzed by water absorption, thickness swelling, thermal conductivity, density, modulus of rupture and modulus of elasticity. From the results, water absorption at 1 and 24 hours was 19-47 % and 38-57 %, respectively. Thickness swell at 24 hours was 15-29%. Thermal conductivity was 0.016, 0.017 and 0.019 W/m.K when using isocyanate, urea formaldehyde and phenol formaldehyde, respectively. Density of the specimens was 770-860 kg/m3. Modulus of rapture was 255-280 MPa. Modulus of elasticity was 5.1-7.6 GPa. Physical and mechanical properties of the specimens indicated that they would be applied for roof tile and construction.
Mechanical and Physical Properties of Roof Tile Prepared from Sugar Cane Fiber
Jessada Wong on,Prayoon Surin,Chaiyaprek Apawet,Krittee Eidhed,Sunate montra,Kaichai Aumkongthum,Supaphorn Thumsorn 국제문화기술진흥원 2015 International Journal of Advanced Culture Technolo Vol.3 No.1
Sugar cane, renewable fiber resources, were used for roof tile production. Urea formaldehyde, phenol formaldehyde and isocyanate resin were used as binders in this study. Roof tile specimens with 400 mm wide, 400 mm long and 5 mm thick were prepared by compression molding. Physical and mechanical properties of the specimens were analyzed by water absorption ,thickness swelling, thermal conductivity, density, modulus of rupture and modulus of elasticity. From the results, water absorption at 1 and 24 hours was 19-47 % and 38-57 %, respectively. Thickness swell at 24 hours was 15-29%. Thermal conductivity was 0.016, 0.017 and 0.019 W/m.K when using isocyanate, urea formaldehyde and phenol formaldehyde, respectively. Density of the specimens was 770-860 kg/m3. Modulus of rapture was 255-280 MPa. Modulus of elasticity was 5.1-7.6 GPa. Physical and mechanical properties of the specimens indicated that they would be applied for roof tile and construction.