Tekstil ve Mühendis 1300-7599 2147-0510 TMMOB Tekstil Mühendisleri Odası Effect of Carbon Fiber Surface Modification on Properties of Carbon Fiber and Carbon Fiber Reinforced Composite Materials Karbon Lif Yüzey Modifikasyonunun Karbon Lif ve Karbon Lif Takviyeli Kompozit Malzemelerin Özelliklerine Etkilerinin İncelenmesi https://orcid.org/0000-0003-4946-3615 Altay Lütfiye https://orcid.org/0000-0003-1094-2272 Sarıkanat Mehmet 03 26 2019 26 113 25 32 01 08 2019 02 19 2019 Copyright © 1987, Tekstil ve Mühendis 1987 Tekstil ve Mühendis

One of the most important factors affecting the properties of carbon fiber reinforced composite materials is the interface bond strength between the carbon fiber / polymer. Surface treatment and sizing applied to carbon fiber play an important role in improving the interface properties. In this study, carbon fibers are subjected to chemical surface treatment and silane modification before epoxy prepregs are produced. Then, the properties of the composite plates obtained from prepregs were investigated by various characterization methods. The chemical treatment applied to the carbon fiber surface increased the oxygen containing functional groups on the fiber surface to form additional binding sites with epoxy. The silane modification significantly increased the processability of the fibers and fiber/ polymer interface adhesion by forming a protective coating on the fiber surface. 

Karbon lif takviyeli kompozit malzemelerin özelliklerini etkileyen en önemli etkenlerden biri karbon lif/polimer arasındaki arayüz bağlanma dayanımıdır. Karbon life uygulanan yüzey modifikasyonları arayüz özelliklerinin iyileşmesinde önemli rol oynamaktadır. Bu çalışmada ilk olarak karbon lifler kimyasal oksidasyon işlemi ve silan modifikasyonundan geçirilerek sonrasında karbon lif takviyeli epoksi tabanlı prepregler üretilmiştir. Daha sonra prepreglerden elde edilen kompozit plakaların özellikleri çeşitli karakterizasyon yöntemleri ile incelenmiştir. Karbon lif yüzeyine uygulanan kimyasal işlem lif yüzeyindeki oksijen içeren fonksiyonel grupları arttırarak epoksi ile ek bağlanma bölgeleri oluşturmuştur. Silan modifikasyonu ise lif yüzeyinde koruyucu bir kaplama oluşturarak lifin işlenebilirliğini ve lif/polimer yapışma özelliğini önemli ölçüde arttırmıştır.  

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