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Journal of Donghua University(English Edition) 2006年第5期23卷 87-90页

作者：张艳王华平陈跃华 College of Textiles Donghua University State Key Lab for Modification of Chemical fibers & Polymer Materials Donghua University

By computation and comparison of the critical spreading coefficient parameter, it was found that shaped fiber bundle is better for wetting. Liquid-air interface tension of liquid arising the shaped fiber bundle body is considered as one critical factor besides liquid viscosity, inertia force and liquid-fiber interface tension. Experimental result simulation demonstrated that the liquid-air interface tension is correlated with the geometric size of the liquid arising in body, Φ0 （x） and which is affected by the cross sectional shape of fiber and the radius of single fiber. The shaped fiber bundle model is/ntroduced to/nvestigate liquid flow in fiber assembly. The model is generated based on a random function for stochastic forming of fibers in bundle and it is necessary to combine this fundamental model with physical explanation for investigation of liquid flow in fiber assembly.

关键词： shaped fiber liquid model.

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Porous Structures of C‑shaped Polypropylene fibers and Oil‑Absorbing Performance of Their Spun‑Bond Non‑woven Fabrics

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Advanced fiber Materials 2024年第4期6卷 1092-1107页

作者： Zheng Li Guojun Jiang Yawen Zhao Hanyue Kang Zhiling Chen Mingyu Zhao Zhijuan Sun Congjie Gao Lixin Xue Center for Membrane Separation and Water Science&Technology College of Chemical EngineeringZhejiang University of TechnologyHangzhou 310014China Zhijiang College Zhejiang University of TechnologyShaoxing 312000China College of Chemistry and Materials Engineering Wenzhou UniversityWenzhou 325035China Institute of New Materials&Industrial Technologies Wenzhou UniversityWenzhou 325024China

Spun-bond non-woven fabrics(NWFs)made of porous C-shaped polypropylene fibers were applied in rapid oil absorption and effective on-line oil spillage *** is of great interest to further optimize the absorption properties of these materials by tuning their preparation parameters as well as characterize them with theoretical *** this paper,effects of die shape,diluent composition(mixtures of dibutyl and dioctyl phthalate),and drawing speed on their porous structure and oil-absorbing performance were systematically investigated and characterized based on two novel concepts,i.e.,the equivalent capillary tube pore radius and the kinetic pore tortuosity(barrier to access)derived from the simplest capillary tube liquid-filling *** use of higher dibutyl phthalate fractions under faster drawing speeds resulted in the formation of larger and more connected inner filament sub-micron *** stages of tube filling relating to inter-filament large pores,medium pores close to bonding points,and inner filament small pores were observed in the spun-bond *** oil recovery rates of 986 L·m^(-2)·h^(-1) with an oil/water selectivity of 6.4 were achieved in dynamic skimming experiments using simulated spilled oil.

关键词： Diluent composition TIPS process shaped fiber Pore structure Oil absorption

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