材料科学
复合材料
环氧树脂
断裂韧性
玻璃纤维
韧性
复合数
纳米纤维
转移模塑
造型(装饰)
复合材料层合板
模具
作者
M. Sarr,Tatsuro Kosaka
出处
期刊:Heliyon
[Elsevier]
日期:2023-02-01
卷期号:9 (2): e13203-e13203
被引量:6
标识
DOI:10.1016/j.heliyon.2023.e13203
摘要
Cellulose nanofibers (CNFs) were used to improve the fracture toughness of glass fiber reinforced epoxy composites (GFRPs). Different CNF suspensions were prepared and sprayed onto the surface of woven glass fiber laminates. The vacuum resin transfer molding (VaRTM) process was used to manufacture the GFRP composites. End notch flexure tests were conducted to evaluate the effect of CNFs on the critical energy release rate in mode II fracture toughness GIIC. The results revealed that 0.05 wt% was the optimum concentration. The interlaminar fracture toughness GIIC was improved by 28% with the addition of 0.05 wt% of CNFs to GF/epoxy composites. Whereas 0.1 wt% of CNFs resulted in decreasing GIIC due to the uncomplete impregnation of GF with epoxy resin caused by the thicker CNF layer at the interfacial laminates. The toughening mechanisms were investigated using a field-emission electron microscope. Large epoxy deformations and shear hackles were predominant for improving the interlaminar fracture toughness of GFRP composites.
科研通智能强力驱动
Strongly Powered by AbleSci AI