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Stiren Akrilonitril ile Polietilen Tereftalatın Mekanik ve Termal İletkenlik Özelliklerinin Geliştirilmesi

Enhancement of The Mechanical and Thermal Conductivity Properties of Polyethylene Terephthalate with Styrene Acrylonitrile

Yunus Kartal(Kırıkkale Üniversitesi)0000-0002-5102-7655
Sayfa
1013–1023
Yayın Tarihi
2026-08-03
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

Shore-D yüzey sertliği ölçümleri, kompozitlerin saf PET'e nazaran %4,44 daha yüksek değere sahip olduğunu ortaya koymuştur.

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Amaç & Hipotez:Bu çalışmada, polietilen tereftalat (PET) polimerinin özelliklerini geliştirmek amacıyla PET matrisine stiren akrilonitril (SAN) takviyesi eklenmiştir.
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Temel Bulgular & Veri:Ağırlıkça dört farklı takviye oranında (2%, 4%, 6% ve 8%) hazırlanan karışım, çift vidalı ekstruder kullanılarak kompozit filamentlere ekstrüde edilmiştir.
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Sonuç & Katkı:Shore-D yüzey sertliği ölçümleri, kompozitlerin saf PET'e nazaran %4,44 daha yüksek değere sahip olduğunu ortaya koymuştur.
🔬Tür:Modelleme & Sayısal Simülasyon
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:eklemeli imalat · PET bazlı kompozit · Eriyik biriktirme modelleme

Özet

Bu çalışmada, polietilen tereftalat (PET) polimerinin özelliklerini geliştirmek amacıyla PET matrisine stiren akrilonitril (SAN) takviyesi eklenmiştir. Ağırlıkça dört farklı takviye oranında (2%, 4%, 6% ve 8%) hazırlanan karışım, çift vidalı ekstruder kullanılarak kompozit filamentlere ekstrüde edilmiştir. Kompozit filamentlerden standartlara uygun nesneler üretmek için eriyik biriktirme modelleme (EBM) yöntemi kullanılmıştır. Kompozitlerin mekanik, termal iletkenlik, kristalografik karakterizasyonları ve taramalı elektron mikroskobu (SEM) kullanılarak yüzey analizleri gerçekleştirilmiştir. Mekanik karakterizasyon için, saf PET ve PET/SAN kompozitlerine çekme ve darbe dayanımı testleri ile yüzey sertliği testleri gerçekleştirilmiştir. Kristalografik karakterizasyon için X-ışını dağılımı (XRD) analizleri yapılmıştır. Çalışmada sonunda, SAN takviyesinin numunelerin çekme dayanımını saf PET'e kıyasla ortalama %13,97, darbe dayanımını ise ortalama %25,81 artırdığı belirlenmiştir. Shore-D yüzey sertliği ölçümleri, kompozitlerin saf PET'e nazaran %4,44 daha yüksek değere sahip olduğunu ortaya koymuştur. Ayrıca PET/SAN kompozitlerin daha yüksek kristallik derecesine sahip olduğu belirlenmiştir. SEM analizi ile yapılan yüzey morfolojisi incelemeleri, PET/SAN kompozitlerin kırılma yüzeylerinin saf PET'e göre daha pürüzsüz olduğunu ortaya koymuştur.

Abstract

In this study, styrene acrylonitrile (SAN) reinforcement was added to the polyethylene terephthalate (PET) matrix to improve the properties of the PET polymer. The mixture, prepared with four different reinforcement ratios by weight (2%, 4%, 6%, and 8%), was extruded into composite filaments using a twin-screw extruder. The fused deposition modeling (FDM) method was used to produce objects from the composite filaments. The mechanical, thermal and crystallographic characterizations of the composites and surface analyses using scanning electron microscopy (SEM) were carried out. For mechanical characterization, tensile and impact strength tests and surface hardness tests were carried out on pure PET and PET/SAN composites. X-ray diffraction (XRD) analyses were carried out to investigate the degree of crystallization of the samples. The study was determined that SAN reinforcement increased the tensile strength of the samples by an average of 13.97% and the impact strength by an average of 25.81% compared to pure PET. Shore-D surface hardness measurements revealed that the composites had a 4.44% higher surface hardness than pure PET. It has also been determined that PET/SAN composites had a higher crystallinity. Surface morphology investigations carried out by SEM analysis revealed that the fracture surfaces of PET/SAN composites were smoother compared to pure PET.

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Bu Makaleye Atıf Yap

Kartal, Y. (2026). Stiren Akrilonitril ile Polietilen Tereftalatın Mekanik ve Termal İletkenlik Özelliklerinin Geliştirilmesi. Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi, Cilt: 26 Sayı: 4, 1013–1023. https://doi.org/10.35414/akufemubid.1882492

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