Paper Title:

Thermal Decomposition and Kinetic Study on Different Types of Glass Fiber/Unsaturated Polyester Pipe Waste

Periodical Materials Science Forum (Volumes 654 - 656)
Main Theme PRICM7
Edited by Jian-Feng Nie and Allan Morton
Pages 2652-2655
DOI 10.4028/www.scientific.net/MSF.654-656.2652
Citation Kaew Saetiaw et al., 2010, Materials Science Forum, 654-656, 2652
Online since June, 2010
Authors Kaew Saetiaw, Duangduen Atong, Viboon Sricharoenchaikul, Duangdao Aht-Ong
Keywords Composite, Glass Fiber, Pyrolysis Kinetic, Thermal Decomposition, Unsaturated Polyester
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Abstract

Three types of unsaturated polyester matrix, ortho phthalic, iso phthalic, and vinyl ester, reinforced with glass fiber laminated composite waste have been subjected to investigate thermal decomposition behavior and kinetic parameters using non-isothermal thermogravimetric analysis from an ambient to temperature 900°C under nitrogen atmosphere at the passing flow rate of 20 ml/min. The results showed that the major decomposition range of the unsaturated polyester matrix was from 260 to 445°C, depending on a heating rate and the different types of polyester matrix. Regarding their chemical structure, ortho phthalic polyester started to degrade at lower temperature (260-280°C) than iso phthalic and vinyl ester (300-350°C). The remaining solid residual contained glass fiber which could not degrade under experimental conditions. The maximum rate of weight loss was increased with increasing heating rate. The activation energy for decomposition of ortho, iso phthalic, and vinyl ester composites was 168, 172, and 176 KJ/mol, respectively.