THE USE OF DIATOM FRUSTULES ON POLYMERİC COMPOSITES AND THERMAL BEHAVIOR OF FRUSTULES FILLED EPOXY

Year 2011, Volume: 13 Issue: 3, 13 - 21, 01.09.2011

Elif Gültürk Mustafa Güden

Abstract

In this study, the use of diatom frustules in polymeric structures as a reinforcement
element was aimed. Thermal and curing behavior of diatom frustules filled epoy composites
were investigated. Diatom frustules with different weight percentage (0-20%) were used as
filler in epoy matrix and the cure behavior of these composites was determined using Fourier
transformed infrared spectroscopy (FTIR). Scanning electron microscope (SEM) images and
Thermal Gravimetric Analyzer (TGA) curves showed that good dispersion of diatom frustules
in epoxy matrices was provided. Thermal decomposition curves of neat and diatom frustules
fiiled epoxy samples revealed a small increase in thermal decomposition temperature of neat
epoxy at 10% and 50% weight loss with the addition of 21wt% diatom frustules.

Keywords

Diatom, Epoy matrix, TGA, FTIR

DİYATOMİTLERİN POLİMER KOMPOZİTLERDE KULLANIMI VE DİYATOMİT KATKILI EPOKSİ KOMPOZİTLERİN TERMAL ÖZELLİKLERİ

Abstract

Bu çalışmada diyatom kabuklarının polimerik matrislerde takviye malzemesi olarak kullanımı amaçlanmış ve diyatom kabuk takviyeli epoksi kompozitlerin kürleşme ve termal özellikleri araştırılmıştır. Kütlece farklı diyatom kabuk katkılı epoksi matris kompozit numuneler üretilmiş ve hazırlanan kompozitlerin kürleşme davranışları Fourier dönüşümlü spektrometre (FTIR) ile belirlenmiştir. Taramalı elektron Mikroskobu (SEM) resimleri ve termogravimetrik analiz (TGA) sonucunda diyatomitlerin epoksi içerisinde homojen dağıldığı gözlenmiştir. Saf ve diyatomit katkılı numunelerin TGA bozunma eğrileri incelendiğinde % 10 ve % 50 kütle kaybında kütlece % 21 diyatomit katkılı numunelerin termal kararlığında bir miktar artış gözlenmiştir

Keywords

Diyatomit, Epoksi matris, TGA, FTIR

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