scholarly journals Tribological Behaviours of Epoxy Composites Filled with Silicon Carbide Nanoparticles

2007 ◽  
Vol 16 (3) ◽  
pp. 096369350701600
Author(s):  
Chun Yuan Zhang ◽  
Min Zhi Rong ◽  
Ming Qiu Zhang
Keyword(s):  
Silicon Carbide ◽  
Sliding Wear ◽  
Epoxy Composites ◽  
Morphological Observation ◽  
Material Loss ◽  
Silicon Carbide Nanoparticles ◽  
The Matrix ◽  
Wear Mode ◽  
Wear Tests ◽  
Striking Contrast

Epoxy composites filled with silicon carbide nanoparticles were fabricated in this work. Sliding wear tests in association with morphological observation indicated that the wear mode of the nanocomposites was rather mild, forming a striking contrast to the severe wear of unfilled epoxy characterized by substantial material loss under the same measurement conditions. Both specific wear rate and friction coefficient of the nanocomposites were significantly lower than those of the unfilled epoxy. On the basis of mechanical testing and tribochemical analysis, it was found that the addition of nano-SiC particles into epoxy increased the mechanical properties of the matrix and facilitated some favourable tribochemical reactions during rubbing, which accounted for the great improvement in the tribological performance.

Friction and Wear of Epoxy Composites Containing Silica Nanoparticles Grafted by Hyperbranched Aromatic Polyamide

2012 ◽  
Vol 20 (8) ◽  
pp. 673-682
Author(s):  
Ying Yu ◽  
Min Zhi Rong ◽  
Ming Qiu Zhang
Keyword(s):  
Silica Nanoparticles ◽  
Sliding Wear ◽  
Friction And Wear ◽  
Frictional Coefficient ◽  
Aromatic Polyamide ◽  
Epoxy Composites ◽  
Linear Polymers ◽  
Curing Mechanism ◽  
The Matrix ◽  
Amine Groups

Nano-sized SiO2 particles grafted with hyperbranched aromatic polyamide were employed as fillers for fabricating epoxy based composites. The hyperbranched aromatic polyamide was selected because its terminal amine groups could take part in the curing reaction of epoxy resin and covalently connect silica nanoparticles with the matrix. The experimental results proved the occurrence of this reaction, and indicated that the presence of the grafted SiO2 in epoxy does not change the overall curing mechanism of epoxy. In comparison to the composites filled with untreated nano-SiO2 particles, the composites with the grafted nano-SiO2 exhibited significantly improved sliding wear resistance and reduced frictional coefficient owing to the strong filler/matrix interfacial bonding. Moreover, hyperbranched aromatic polyamide grafted nano-SiO2 was more effective to enhance tribological properties of epoxy than linear polymers grafted versions.

Effect of Reinforced Silicon Carbide Nanoparticles in Epoxy Composites

2015 ◽  
Vol 2 (9) ◽  
pp. 4348-4352 ◽  
Author(s):  
A.K. Birru ◽  
G. Karunakar Reddy ◽  
Gangapuram Ajay ◽  
N. Kiran Kumar
Keyword(s):  
Silicon Carbide ◽  
Epoxy Composites ◽  
Silicon Carbide Nanoparticles

Experimentally Calibrated Abrasive Sliding Wear Model: Demonstrations for Rotary and Linear Wear Systems

2018 ◽  
Vol 85 (12) ◽  
Author(s):  
Xiu Jia ◽  
Tomas Grejtak ◽  
Brandon Krick ◽  
Natasha Vermaak
Keyword(s):  
Sliding Wear ◽  
Surface Profile ◽  
Calibration Procedure ◽  
Linear Wear ◽  
Wear Simulation ◽  
Material Loss ◽  
Experimental Calibration ◽  
Simulation Procedure ◽  
Foundation Parameters ◽  
Wear Tests

Considerable effort has been made to model, predict, and mitigate wear as it has significant global impact on the environment, economy, and energy consumption. This work proposes generalized foundation-based wear models and a simulation procedure for single material and multimaterial composites subject to rotary or linear abrasive sliding wear. For the first time, experimental calibration of foundation parameters and asymmetry effects are included. An iterative wear simulation procedure is outlined that considers implicit boundary conditions to better reflect the response of the whole sample and counter-body system compared to existing models. Key features such as surface profile, corresponding contact pressure evolution, and material loss can be predicted. For calibration and validation, both rotary and linear wear tests are conducted on purpose-built tribometers. In particular, an experimental calibration procedure for foundation parameters is developed based on a Levenberg–Marquardt optimization algorithm. This procedure is valid for specific counter-body and wear systems using experimentally measured steady-state worn surface profiles. The calibrated foundation model is validated by a set of rotary wear tests on different bimaterial composite samples. The established efficient and accurate wear simulation framework is well suited for future design and optimization purposes.

scholarly journals Wear Behavior of Woven Roving Aramid / Epoxy Composite under Different Conditions

1970 ◽  
Vol 3 (2) ◽  
Author(s):  
Asad A. Khalid
Keyword(s):  
Silicon Carbide ◽  
Composite Material ◽  
Epoxy Resin ◽  
Sliding Wear ◽  
Epoxy Composite ◽  
Wear Behavior ◽  
Operating Conditions ◽  
Volumetric Fraction ◽  
Pin On Disc ◽  
Wear Tests

Wear behavior studies of aramid woven roving /epoxy composite has been conducted. Sliding the material against smooth steel counter face under dry and  lubricated with oil conditions has been investigated. Powder of Silicon carbide has been mixed with the epoxy resin and tested also. The powder was mixed in a volumetric fraction of 10% with the epoxy resin. Four Laminates of six layers were fabricated by hand lay up  method. A pin on disc apparatus has been fabricated to conduct the sliding wear tests on specimens of (4 mm   4 mm   12 mm) in size have been cut from the four laminates. The effect of sliding condition including dry, lubricated, dry with additives and lubricated with additives have been studied. Wear rate tests have been conducted at different sliding speeds and loads. Results show that the wear characteristics are influenced by the operating conditions and the construction of the composite material used. It was also found that the wear of aramid /epoxy composite onto the steel counter face were significantly reduced by using lubricant and additives but still took place.Keywords: Wear, Composite materials, Woven roving aramid, Epoxy, Additives, Lubricant.

Effect of Ceramic Fillers on Mechanical Properties of Bamboo Fiber Reinforced Epoxy Composites: A Comparative Study

2010 ◽  
Vol 123-125 ◽  
pp. 1031-1034 ◽  
Author(s):  
Sandhyarani Biswas ◽  
Alok Satapathy ◽  
Amar Patnaik
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Red Mud ◽  
Synergistic Effects ◽  
Bamboo Fiber ◽  
Industrial Wastes ◽  
Epoxy Composites ◽  
Void Content ◽  
Filler Materials ◽  
Fiber Reinforced

In order to obtain the favoured material properties for a particular application, it is important to know how the material performance changes with the filler content under given loading conditions. In this study, a series of bamboo fiber reinforced epoxy composites are fabricated using conventional filler (aluminium oxide (Al2O3) and silicon carbide (SiC) and industrial wastes (red mud and copper slag) particles as filler materials. By incorporating the chosen particulate fillers into the bamboo-fiber reinforced epoxy, synergistic effects, as expected are achieved in the form of modified mechanical properties. Inclusion of fiber in neat epoxy improved the load bearing capacity (tensile strength) and the ability to withstand bending (flexural strength) of the composites. But with the incorporation of particulate fillers, the tensile strengths of the composites are found to be decreasing in most of the cases. Among the particulate filled bamboo-epoxy composites, least value of void content are recorded for composites with silicon carbide filling and for the composites with glass fiber reinforcement minimum void fraction is noted for red mud filling. The effects of these four different ceramics on the mechanical properties of bamboo- epoxy composites are investigated and the conclusions drawn from the above investigation are discussed.

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