Nanopartikül Takviyeli Polyester Nanokompozitin Termo-Fiziksel Özelliklerinin Karakterizasyonu

Year 2021, Volume: 10 Issue: 2, 121 - 132, 30.12.2021

Cenk Yanen , Ercan Aydoğmuş

Abstract

Bu araştırmada, nanopartiküller kullanılarak üretilen doymamış polyester (UP) nanokompozitinin bazı termal ve fiziksel özellikleri araştırılmıştır. Nanopartikül olarak Füme Silika (FS), silisyum karbür (SiC) ve grafen nanoplate (GNP) kullanılmıştır. Sentezlenen polyester nanokompozitlere kütlece %0.2, %0.4, %0.6, %0.8 ve %1.0 oranlarında nanopartikül takviye edilmiştir. Üretilen polyester nanokompozitin ısıl iletkenlik katsayısını GNP ve SiC nanopartikül takviyeleri sırasıyla yaklaşık %64 ve %39 oranında arttırırken, FS takviyesi %12.5 oranında azaltmıştır. SiC nanopartikül, polyester nanokompozitin Shore D sertliğini % 0.1 takviye edildiği numunede %5.26 oranında arttırmıştır. Bu oran % 0.1 takviyeli FS için %3.85 ve %0.4 GNP için %1.9 olmuştur. Ayrıca, SiC ve GNP takviyesi polyester nanokompozitin yoğunluğunu arttırırken, FS takviyesi kompozitin yoğunluğunu azaltmıştır. Numunelerin termal kararlılık sıralaması FS, GNP ve SiC takviyeli nanokompozitler olarak tespit edilmiştir. En düşük termal kararlılığa sahip numunenin UP olduğu belirlenmiştir. Termal kararlılık deneylerinde elde edilen sonuçlara göre, güçlendirilmiş nanokompozitlerin termal bozunma sırasındaki kütle kayıpları karşılaştırılmıştır. Polyester nanokompozitlerin termal bozunma davranışı kinetik denklem ile modellenmiştir. Deneysel ve teorik model sonuçları karşılaştırıldı ve doğrusal olmayan regresyon kullanılarak istatistiksel analiz ile korelasyon sayıları hesaplanmıştır.

Keywords

Polyester nanokompozit, Nanopartikül, Termal iletkenlik, Shore D sertlik, Termal stabilite

Characterization of Thermo-Physical Properties of Nanoparticle Reinforced the Polyester Nanocomposite

Abstract

In this research, some thermal and physical properties of unsaturated polyester (UP) nanocomposite produced using nanoparticles were investigated. Fumed Silica (FS), silicon carbide (SiC) and graphene nanoplate (GNP) were used as nanoparticles. The synthesized polyester nanocomposites were reinforced with 0.2%, 0.4%, 0.6%, 0.8% and 1.0% nanoparticles by mass. GNP and SiC nanoparticle reinforcements increased the thermal conductivity coefficient of the produced polyester nanocomposite by approximately 64% and 39%, respectively, while FS reinforcement decreased it by 12.5%. SiC nanoparticle increased the Shore D hardness of the polyester nanocomposite by 5.26% in the sample with 0.1% reinforcement. This ratio was 3.85% for 0.1% supplemented FS and 1.9% for 0.4% GNP. In addition, SiC and GNP reinforcement increased the density of the polyester nanocomposite, while FS reinforcement decreased the density of the composite. The thermal stability order of the samples was determined as FS, GNP and SiC reinforced nanocomposites. It was determined that the sample with the lowest thermal stability was UP. According to the results obtained in thermal stability experiments, mass losses of reinforced nanocomposites during thermal decomposition were compared. The thermal decomposition behavior of polyester nanocomposites was modeled by the kinetic equation. Experimental and theoretical model results were compared and correlation numbers were calculated by statistical analysis using nonlinear regression.

Keywords

Polyester nanocomposite, Nanoparticles, Thermal conductivity, Shore D hardness, Thermal stability

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