PC-PBT Karışımlarının Hibrit ÇDKNT-GNP Nanodolgularla Takviyesi Sonucunda Isısal ve Elektriksel İletkenlik İyileştirmelerinin Değerlendirilmesi

Year 2024, EARLY VIEW, 1 - 1

Tuba Özdemir Öge

https://doi.org/10.2339/politeknik.1517052

Abstract

Bu çalışmada eriyik-karıştırma yöntemi kullanılarak ÇDKNT-GNP hibrit nanodolgu ile katkılanmış PC-PBT karışımlarının termal özellikleri ve elektriksel iletkenliklerindeki iyileşmelerin incelenmesi amaçlanmıştır. Diferansiyel tarama kalorimetresi (DSC) ve termogravimetrik analiz (TGA) sonuçları nano-katkı ilavesinin karışım kristalliklerini arttırdığını göstermiştir. Bunun yanında, yüksek katkı oranlarında numunelerin termal kararlılığında önemli bir düşüş gözlemlenmiş olup bu durum polimer matriks içindeki faz geçişlerine bağlanmıştır. Ağ. %5 katkı oranına sahip numunede iletken bir ağ elde edilmiş olup, %7'lik ağırlıkça katkı oranında elektriksel iletkenlikte düşüş gözlemlenmiş ve bu durum topaklaşma (aglomerasyon) etkisine bağlanmıştır. Elde edilen deneysel sonuçlar hibrit nanokompozitlerde üstün termal ve elektriksel performans elde edilmesi için nano-katkı kompozisyonunun optimizasyonunun önemini vurgulamaktadır.

Keywords

Polimer-matrisli kompozitler (PMK), Nanomalzemeler, Termal Özellikler, DSC, TGA, Elektriksel iletkenlik

Supporting Institution

Tübitak (1002-A)

Project Number

123M666

Thanks

This research was funded by the TUBİTAK 1002-A project (grant no. 123M666). The author gratefully acknowledges the financial support provided by TÜBİTAK.

Assessment of Thermal and Electrical Conductivity Enhancements in PC-PBT Blends Reinforced with Hybrid MWCNT-GNP Nanofillers

Abstract

This study aims to examine the improvement of thermal properties and electrical conductivity of PC-PBT blends through reinforcement with hybrid MWCNT-GNP nanofillers via melt-mixing. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) showed that the incorporation of nanofillers increased the crystallinity of the blends. On the other hand, a marginal decline in thermal stability was observed in the case of higher filler concentrations which was ascribed to the phase transitions within the polymer matrix. A conductive network was achieved with 5% wt. MWCNT-GNP weight fraction, and a notable reduction of 7 % was observed which was attributed to agglomeration effects. These findings reveal the importance of optimizing nanofiller concentration to achieve superior thermal and electrical performance in hybrid nanocomposites.

Keywords

Polymer-matrix composites (PMCs), Nanomaterials, Thermal Properties, DSC, TGA, Electrical Conductivity

Project Number

123M666

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