Theses and Dissertations - UTB/UTPA
Date of Award
12-2014
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Mechanical Engineering
First Advisor
Dr. Robert Jones
Second Advisor
Dr. Constantine Tarawneh
Third Advisor
Dr. Karen Lozano
Abstract
Carbon nanofiber (CNF) reinforced composites are exceptional materials that exhibit superior properties compared to conventional composites. This paper presents the development of a vapor grown carbon nanofiber (VGCNF) thermoplastic polyurethane (TPU) composite by a melt mixing process. Dispersion and distribution of CNFs inside the TPU matrix were examined through scanning electron microscopy to determine homogeneity. The composite material underwent durometer, thermal gravimetric analysis, differential scanning calorimetry, heat transfer, hysteresis, dynamic modulus, creep, tensile, abrasion, and electrical conductivity testing to characterize its properties and predict behavior. The motivation for this research is to develop an elastomer pad that is an electrically conductive alternative to the elastomer pads currently used in railroad service. The material had to be a completely homogenous electrically conductive CNF composite that could withstand a harsh dynamically loaded environment. The current prototype material meets the mechanical and conductive requirements and is currently undergoing field-testing.
Granting Institution
University of Texas-Pan American
Comments
Copyright 2014 Daniel Thomas Basaldua. All Rights Reserved.
https://www.proquest.com/dissertations-theses/effects-vapor-grown-carbon-nanofibers-on/docview/1658783822/se-2?accountid=7119