Abstract
This research studied the effect of nano silica particles on wear behavior test , ultimate tensile strength ,impact strength, fracture toughness and hardness shore D of specimens composite material. The hand-lay-up method is used to preparation of specimens established from unsaturated polyester resin matrix reinforcement with 4% weight fraction glass fiber (chopped / woven) mat and 1%, 3%, 5% weight fraction of nano silica particle. The nano silica particles used in this study has an average size of (less than 45nm). The results showed that the specimen (up+4% woven glass fiber+5% nano SiO2) gives better mechanical properties include ultimate tensile strength, impact strength, fracture toughness and hardness shore D (110 MPa, 13.7 K.J/m2, 18.92 MPa.m1/2, 85 shore D) respectively,when compare other specimens. The wear rate decreased from (22.5×10-4 cm3/N.m) for specimen (pure unsaturated polyester resin) to (0.18×10-4 cm3/N.m) for specimen (UP+4% woven glass fiber +5% nano SiO2) under parameter 7N (load), 15 minutes (sliding time), 2m/s (sliding speed) and (7 cm) sliding distance.
Highlights
Composite materials can be defined as a heterogeneous material consists from two or more solid phases, that is in close contact with each other on a microscopic scale
Basavarajappa, et al [12]studied the effect of the graphite and silicon carbide on dry wear behavior for epoxy resin matrix reinforced with glass fiber composite materials
The composite specimens were made from unsaturated polyester resin as a matrix and silica particles as the reinforcement with different weight fractions (5%, 10%, 15% and 20%) with two different grain sizes (25 μm and 125μm).The results show the wear rate increases with load and sliding speed increase, the author found that the wear rate decreases with weight fraction increase and decrease the grain size of the reinforcing particles
Summary
S. Basavarajappa , et al [12]studied the effect of the graphite and silicon carbide on dry wear behavior for epoxy resin matrix reinforced with glass fiber composite materials. The result shows the experiments using the Taguchi’s orthogonal array the fiber content has main greater effect on wear, the increasing of fiber content the wear resistance increases Other parameters such as speed and load have a large role in wear rate. The aim of this research is a studying the effect of nano silica reinforced with two kind glass fiber (woven,chopped) into unsaturated polyester resin matrix on some mechanical properties of composite materials that used mainly in the different application such as gears, helicopter blades, artificial joints and many bearing applications.
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