Method for preparing catalyst-supported composite nano-fiber non-woven fabric
A technology of composite nanofibers and supported catalysts, which is applied in fiber processing, non-woven fabrics, textiles, and papermaking, etc., can solve the problems of complicated preparation process, and achieve the effects of simple process, improved utilization rate, and high firmness.
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Embodiment 1
[0036] (1) Add solvent DMAc to the polym-phenylene isophthalamide PMIA solution with a concentration of 16wt% and an inherent viscosity of 1.83dL / g, heat to 50°C and stir for 6h to dilute, and let stand at room temperature 24h to remove air bubbles to obtain a PMIA spinning solution with a concentration of 10wt%.
[0037] (2) MnO x Catalyst nanoparticles were added into absolute ethanol, and ultrasonically dispersed to obtain a catalyst particle dispersion with a concentration of 0.05 wt%.
[0038] (3) inject the PMIA spinning solution that step (1) obtains into jet spinning device (the spinneret aperture is 0.4~0.5mm, and the air gap width is 0.4~0.5mm), the catalyst particle dispersion that step (2) obtains Inject the spraying device (nozzle diameter is 0.6~1.0mm), connect high-pressure gas, regulate the single-hole extrusion flow of PMIA solution in the jet spinning device to be 1.2mL / h, the air pressure of the jet spinning device is 0.1MPa, and the ambient temperature is ...
Embodiment 2
[0041] (1) Add solvent DMAc to the polym-phenylene isophthalamide PMIA solution with a concentration of 15.5wt% and an inherent viscosity of 1.95dL / g, heat to 50°C and stir for 6h to dilute, and statically Leave it for 24 hours to remove air bubbles to obtain a PMIA spinning solution with a concentration of 12 wt%.
[0042] (2) MnO x / TiO 2 The catalyst nanoparticles were added into anhydrous acetone, and dispersed ultrasonically to obtain a catalyst particle dispersion with a concentration of 0.08 wt%.
[0043] (3) inject the PMIA spinning solution that step (1) obtains into jet spinning device (the spinneret aperture is 0.4~0.5mm, and the air gap width is 0.4~0.5mm), the catalyst particle dispersion that step (2) obtains Inject the spraying device (nozzle diameter is 0.6~1.0mm), connect high-pressure gas, regulate the single-hole extrusion flow of PMIA solution in the jet spinning device to be 1.0mL / h, the air pressure of the jet spinning device is 0.12MPa, and the ambient...
Embodiment 3
[0046] (1) Add solvent DMAc to the polym-phenylene isophthalamide PMIA solution with a concentration of 16wt% and an inherent viscosity of 2.0dL / g, heat to 50°C and stir for 6h to dilute, and let stand at room temperature 24h to remove air bubbles to obtain a PMIA spinning solution with a concentration of 13wt%.
[0047] (2) MnO x The catalyst nanoparticles were added into isopropanol and dispersed ultrasonically to obtain a catalyst particle dispersion with a concentration of 0.15 wt%.
[0048] (3) inject the PMIA spinning solution that step (1) obtains into jet spinning device (the spinneret aperture is 0.4~0.5mm, and the air gap width is 0.4~0.5mm), the catalyst particle dispersion that step (2) obtains Inject spraying device (nozzle diameter is 0.6~1.0mm), connect high-pressure gas, regulate the single hole extrusion flow rate of PMIA solution in jet spinning device to be 1.2mL / h, the air pressure of jet spinning device is 0.12MPa, ambient temperature is 65°C; adjust the...
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