1 Key Laboratory of Advanced Textile Composites of Ministry of Education, Institute of Textile Composites, College of Textile, Tianjin Polytechnic University, Tianjin 300387; 2 Yangzhou East New Materials Technology Co., Ltd, Yangzhou 211400
Abstract: The “cracked” TiO2 nanofiber sheets/glass fiber composite preforms were fabricated by electrospinning and high temperature sintering in this paper. The preparation process of TiO2 nanofiber sheets was optimized by optical microscope. The permeability of composite preforms incorporated with TiO2 nanofiber sheets with different thickness was measured by the radial flow experiments with emphasis on the effect of the "cracked" nanofiber sheets on the impregnating pattern of glass-fiber preforms. The results show that the nanofiber sheets with good cracking morphology and high adhesion can be fabricated on the surface of glass fiber with the amount of spinning sols of 1.0—4.0 mL. Compared with the blank glass-fiber preforms, the principal permeabilities of composite preforms increase by two or three orders of magnitude. The anisotropy extent of composite preforms increase with the increa-sing of the amount of spinning sols. The Synchronization of macro-and micro-flow exist in the composite preforms, meanwhile, it increase with the filling time.
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2018, Vol. 32 
