الفهرس | Only 14 pages are availabe for public view |
Abstract - In this study , three new kinds of composite materials were improved the wear properties of the carbon fiber ( CF ) / epoxy composites by using micro cellulose with goal of studying the effect of natural fiber on high performance composite .The materials are pure epoxy , CF /epoxy composites with addition of 0 , 2 and 5 wt.% of MFC as natural nano-fiber . - Epoxy composites materials was chosen to study the effect of motion parameters such as sliding velocity and applied load on the weight loss. The operation conditions were sliding velocities 9.8 , 12.8 , 16.8 and 25 m/s ; applied loads 10 , 45 , 60 and 77 N ; Sliding times 1 , 2 , 3 , 4 and 5 minutes. - Counterface materials are steel , aluminum and brass and its surface roughness are 2.2 μm, 1.5 μm & 0.6 μm and its hardness are 57, 90 & 94 vickers , respectively . The experiments were carried out at room temperature . from the study of the wear behaviour of the different epoxy composites , the following conclusions can be drawn : 1. The weight loss of pure epoxy is much higher than other composite materials regardless the sliding conditions . 2. Using micro fibers of cellulose to epoxy resin has high effect in improving wear rate of composites as follows : - Effect of addition carbon Fiber to pure epoxy is decreased wear by about 85% . - Adding carbon fiber with 2% MFC to pure epoxy tends to decreasing wear by about 90% . - Addition 0f carbon fiber with 5% MFC to pure epoxy tends to decreasing wear by about 93.4% . |