Friction and wear study of NR/SBR blends with Si3N4Filler

International Conference on Recent Advances in Materials & Manufacturing Technologies

Ganeshkumar, A.^1 ; Balaganesan, G.^1 ; Sivakumar, M.S.^1

Department of Applied Mechanics, Indian Institute of Technology Madras, Tamil Nadu

600036, India^1

关键词: Coefficient of frictions;    Covalently bonded;    Environmental conditions;    Frictional properties;    Hydrophobic properties;    Precipitated silicas;    Silane coupling agent;    Specific wear rates;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/346/1/012015/pdf
DOI  :  10.1088/1757-899X/346/1/012015

来源: IOP

【 摘 要 】

The aim of this paper is to investigate mechanical and frictional properties of natural rubber/styrene butadiene rubber (NR/SBR) blends with and without silicon nitride (Si3N4) filler. The rubber is surface modified by silane coupling agent (Si-69) for enhancing hydrophobic property. The Si3N4of percentage 0 1, 3, 5 and 7, is incorporated into NR/SBR rubber compounds with 20% precipitated silica. The specimens with and without fillers are prepared as per standard for tensile and friction testing. Fourier transform infrared (FTIR) spectroscopy test is conducted and it is inferred that the coupling agent is covalently bonded on the surface of Si3N4particles and an organic coating layer is formed. The co-efficient of friction and specific wear rate of NR/SBR blends are examined using an in-house built friction tester in a disc-on-plate (DOP) configuration. The specimens are tested to find coefficient of friction (COF) against steel grip antiskid plate under dry, mud, wet and oil environmental conditions. It is found that the increase in tensile strength and modulus at low percentage of Si3N4 dispersion. It is also observed that increase in sliding friction co-efficient and decrease in wear rate for 1% of Si3N4dispersion in NR/SBR blends. The friction tested surfaces are inspected using Scanning Electron Microscope (SEM) and 3D non contact surface profiler.