Authors:
Gamini Suresh,Lakshmi Srinivas Ch,M Chandra Sekhar,DOI NO:
https://doi.org/10.26782/jmcms.2020.07.00061Keywords:
PTFE composites,glass fibers,carbon fibers,graphite,viscoelastic properties,erosion wear,Abstract
Polytetrafluorethylene (PTFE)is one type of the most prominent semi-crystalline engineering thermo-plastics. The functional properties of PTFE are enhanced with the addition of micro-fillers inorder to increase the utility of the composites. In the current work, three types of industrial Teflon composites with micro-fillers viz. 25% by weight of glass fibers, 25% by weight of carbon fibers, and 25% by weight of graphite along with neat PTFE were used to investigatethe viscoelastic and erosion wear characteristics. From the Dynamic Mechanical Analysis (DMA) graphs, it was observed that PTFE with 25% by weight of GF has shown peak viscoelastic characteristicsinthree-point bending mode. The viscoelastic properties such asstorage modulus of 1 GPa, loss modulus of 84 MPa and a tand of 0.137 respectively at 1400 C were observed from the DMA plots for the sample (PTFE+25%GF).Also, the erosion wear behavior of the same sample has shown good resistance at 1.5 bar and 90o impingement angle respectively due to the addition of glass fiber micro-filler.Refference:
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