EFFECT OF TPU NONWOVEN FABRIC ON PERMEABILITY FOR GLASS FIBER PREFORM AND TOUGHNESS PROPERTIES OF GF/EP COMPOSITES

Abstract

Abstract: In this study, the thermoplastic polyurethane nonwoven fabric (TNF) was chosen as structural toughening layer to improve the composite toughening, and the composites were fabricated by vacuum-assisted resin transfer molding (VARTM) technique. The toughening properties of the composites were investigated as well as permeability. Toughening of GF/EP composites was achieved by interleaving TNF. It provided the best all-round performance with fracture toughness improvements of 78% and 115% for mode-Ⅰ and mode-Ⅱ, respectively. At the same time, the permeability of TNF/GF/EP composites was decreased by 56.5%.

Key words: RTM, composites, interlaminar toughen, permeability, TPU, nonwoven fabric

CLC Number:

TB332

ZHANG Na, LV Guang-chao, LIU Chun-tai, TAN Kun-lun. EFFECT OF TPU NONWOVEN FABRIC ON PERMEABILITY FOR GLASS FIBER PREFORM AND TOUGHNESS PROPERTIES OF GF/EP COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2019, 0(3): 5-10.

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