Bazalt Elyaf Yüzeyindeki Silan Katmanının Polilaktit Kompozitlerine Güçlendirme Etkinliğinin Değerlendirilmesi

Öz

Bazalt elyaf (BF) yüzeyindeki kaplamanın, kırpılmış BF içeren polilaktid (PLA) kompozitlerin mekanik, ısısal-mekanik, eriyik akış ve morfolojik özelliklerine etkisi, çekme, darbe ve Shore sertlik testleri, dinamik mekanik analiz (DMA), eriyik akış indeksi (MFI) ölçümleri ve taramalı elektron mikroskobu (SEM) karakterizasyon yöntemleri kullanılarak rapor edilmiştir. Kaplanmış ve kaplanmamış BF'nin yüzey özelliklerini araştırmak için kızılötesi spektroskopi analizi uygulanmıştır. Kompozit numuneler, eriyik karıştırma ve enjeksiyon kalıplama prosesi ile hazırlanmıştır. BF'nin PLA matrisine yüzey yapışmasının iyileştirilmesi, kaplanmış BF ve kaplanmamış BF içeren kompozitlerin mekanik test verilerinin karşılaştırılması yardımıyla değerlendirilmiştir. BF yüzeyindeki silan kaplama, kaplanmamış BF'ye kıyasla depolama modülü değerlerinde artışa neden olmuştur. Bunlara ek olarak, PLA'nın MFI değeri, BF eklenmesi ile ciddi bir değişiklik göstermemiştir. Kaplanmış BF ve PLA fazı arasındaki yapışmanın gerçekleştirilmesinden kaynaklanan performans artışı, kompozitlerin SEM mikrografları ile doğrulanmıştır.

Anahtar Kelimeler

• Polilaktit
• Bazalt Elyaf
• Polimer Kompozitler
• Yüzey Kaplaması.

Evaluating Reinforcement Effectiveness of Silane Layer on Basalt Fiber Surface to Its Composites with Polylactide

Abstract

The effect of the covering layer on the basalt fiber (BF) surface on the mechanical, thermo-mechanical, melt-flow, and morphological properties of polylactide (PLA) composites loaded with chopped BF was reported by performing tensile, impact, and Shore hardness tests, dynamic mechanical analysis (DMA), melt flow index (MFI) measurements, and scanning electron microscopy (SEM) characterization methods. Infrared spectroscopy analysis was applied to investigate the surface characteristics of desized and sized BF. Composite specimens were prepared through the melt-compounding and injection molding processes. The improvement of BF surface adhesion to PLA matrix was evaluated by comparing mechanical test data of composites containing desized and sized BF. Silane covering on BF led to an increase in storage modulus values compared to desized BF. Furthermore, the MFI of PLA did not change significantly with BF inclusions. Performance enhancement caused by the establishment of adhesion between the BF and PLA phases was confirmed by SEM micrographs of composites.

Keywords

• Polylactide
• Basalt Fiber
• Polymer Composites
• Surface Sizing.

Kaynakça

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