Study of the Effect of Graphite Filler on the Vulcanizing Behavior and Properties of Nitrile Rubber and NBRPVC Blend

By : D. Murali Manohar , B.C. Chakraborty , S. Shamshath Begum

Page No: 91-107

Abstract
n search of improved materials for efficient shock and vibration mounts for machineries, graphite loaded NBR and NBR/PVC blend were made and investigated. The scorch time was seen to be reduced and vulcanization rate was enhanced due to graphite inclusion. Scanning electron microscopy images have shown homogenous dispersion of graphite powder. NBRgraphite showed a gradual increase in the hardness, tensile strength, Young’s modulus, and tear values with increasing graphite loading. In the case of NBR/PVC-graphite composition, a drop in the tensile strength and increase in the Young’ modulus and tear strength was observed. Various mathematical models were used to investigate hardness-Young’s modulus relationship and correlation of the modulus with aspect ratio and volume fraction of graphite established. Different equations were also used to predict effect of graphite particle shape factor and hardness of the vulcanised composition on compressive modulus and compared with measured Young’s modulus.

Authors :
D. Murali Manohar
Department of Polymer Engineering, B.S.A Crescent Institute of Science & Technology, Chennai, India

B.C. Chakraborty
Polymer Nanotechnology Centre, B.S.A Crescent Institute of Science & Technology, Chennai, India

S. Shamshath Begum
Department of Polymer Engineering, B.S.A Crescent Institute of Science & Technology, Chennai, India
 

DOI: https://doi.org/10.32381/JPM.2020.37.1-2.7