摘要
将熔喷成型的热塑性聚氨酯(TPU)无纺布(TNF)作为复合材料结构化的增韧层,采用真空树脂传递模塑(VARTM)工艺制备无纺布/玻璃纤维/环氧(TNF/GF/EP)复合材料,研究了其层间断裂韧性以及增韧机制,并对无纺布引入前后的玻璃纤维织物预浸体的渗透率进行了测量。结果表明:TNF增韧后的复合材料层间断裂韧性得到提高,Ⅰ型能量释放率GⅠC由790J/m^2增加到1411 J/m^2,提高了78%,Ⅱ型能量释放率GⅡC由569. 9 J/m^2增加到1223. 8 J/m^2,提高了115%,均表现出明显的增韧效果;同时,TNF的引入使得复合材料预制体体系的渗透率下降了56. 5%。
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%.
作者
张娜
吕广超
刘春太
谈昆伦
徐平
黄明
ZHANG Na;LV Guang-chao;LIU Chun-tai;TAN Kun-lun(National Engineering Research Center for Advanced Polymer Processing Technology,Zhengzhou University,Zhengzhou 450002,China;PGTEX China Co.,Ltd.,Changzhou 213135,China)
出处
《玻璃钢／复合材料》
CAS
北大核心
2019年第3期5-10,共6页
Fiber Reinforced Plastics/Composites
基金
国家重点研发计划(2016YFB0101602)
中国博士后(2016M592305郑州大学力学与工程科学学院博士后)
河南省项目(16A430010)
