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Optical Properties of ATO Sol-gel Coated Carbon Fibers

Published online by Cambridge University Press:  11 October 2012

Brandon Richard ,
Norma Alcantar ,
Andrew Hoff  and
Sylvia Thomas
Brandon Richard
Affiliation:
AMBIR Laboratory, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620, U.S.A.
Norma Alcantar
Affiliation:
Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620, U.S.A.
Andrew Hoff
Affiliation:
University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620, U.S.A.
Sylvia Thomas
Affiliation:
AMBIR Laboratory, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620, U.S.A.
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Abstract

Recent trends in composite research include the development of structural materials with multiple functionalities. In new studies, novel materials are being designed, developed, modified, and implemented into composite designs. Typically, an increase in functionality requires additional material phases within one system. The presence of excessive phases can result in deterioration of individual or overall properties. True multi-functional materials must maintain all properties at or above the minimum operating limit. In this project, samples of Sb-doped SnO2(ATO) sol-gel solutions are used to coat carbon fibers and are heat treated at a temperature range of 200 – 500 °C. Results from this research are used to model the implementation of sol-gel coatings into carbon fiber reinforced multifunctional composite systems. This research presents a novel thermo-responsive sol-gel/ (dopant) combination and evaluation of the actuating responses due to various heat treatment temperatures. While ATO is a well-known transparent conductive material, the implementation of ATO on carbon fibers for infrared thermal reflectivity has not been examined. These coatings serve as actuators capable of reflecting thermal infrared radiation in mid-range and near-range wavelengths (λ). By altering the ATO sol gel thickness and heat treatment temperatures, optimal optical properties are obtained. While scanning electron microscopy (SEM) is used for imaging, electron diffraction spectroscopy (EDS) is used to verify the compounds present in the coatings. Fourier transform infrared (FT-IR) spectroscopy was performed to analyze the reflectivity in the infrared spectra and analyze the crystal structures after heat treatments.

Keywords

SnSbsol-gel
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1454: Symposium HH – Nanocomposites, Nanostructures and Heterostructures of Correlated Oxide Systems , 2012 , pp. 221 - 226
Copyright
Copyright © Materials Research Society 2012

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