Kırpılmış Karbon Elyaf İçeriğinin Polyester Matrisli Kompozitlerin Mekanik ve Tribolojik Özelliklerine Olan Etkisi

Yıl 2023, , 189 - 198, 31.01.2023

Yasin Akgül , Metin Efe Yalçın Andinet Kumella Eticha

https://doi.org/10.29130/dubited.1037140

Cited By: 1

Öz

Bu çalışmada, kısa karbon elyaf (SCFs) içeriğinin polyester (PES) kompozitin mekanik ve tribolojik özellikleri üzerindeki etkileri araştırılmıştır. El yatırması yöntemiyle ağırlıkça farklı oranlarda (%0,5, %1 ve %2) SCF'ler içeren kompozitler üretilmiştir. Numunelerin eğilme mukavemeti 3 noktalı eğilme testleri ile, darbe sönümleme performansları ise İzod darbe testi yapılarak incelenmiştir. Ayrıca numunelerin aşınma direnci özellikleri 20 N yük uygulanarak ölçülmüştür. Numunelerin kırık ve aşınmış yüzeylerinin morfolojisini incelemek için taramalı elektron mikroskobu kullanılmıştır. Test sonuçları, lif içeriğinin artmasıyla SCF takviyeli polyester kompozitin eğilme mukavemetinin azaldığını göstermektedir. Ancak, darbe dayanımı analizinde aynı eğilim gözlemlenmemiştir. Böylece, %2 SCF takviyesi ile PES2CF’nin darbe dayanımını, saf polyestere göre yaklaşık %67 oranında artmıştır. Bu çalışma aynı zamanda SCF takviyeli polyester kompozitlerin aşınma direnci özelliklerinin SCF içeriği ile dolaylı olarak ilişkili olduğunu ortaya koymaktadır. Dolayısıyla, en yüksek aşınma direnci (1.51×10-3 mm3/m) PES0.5CF numunesi için görülmüştür. Bu nedenle, saf polyester üzerine düşük oranlarda SCF içeriğinin eklenmesi, mekanik özelliklere kıyasla tribolojik davranışlarda önemli etkiler göstermiştir.

Anahtar Kelimeler

Kırpılmış Karbon Elyaflar, Polyester, Eğme Dayanımı, Darbe Dayanımı, Aşınma Direnci

Effect of Chopped Carbon Fibers Amount on the Mechanical and Tribological Properties of Polyester Matrix Composite

Öz

In this study, the effect of the amount of short carbon fibers (SCFs) on the mechanical and tribological properties of polyester (PES) composite were investigated. Composites were produced with different weight fractions (0.5%, 1%, and 2%) of SCFs by the hand lay-up method. The flexural strength and flexural modulus of samples was studied by conducting 3-point bending tests, whereas the energy-absorbing performance was examined by performing the Izod impact test. Moreover, the wear resistance properties of samples were measured by applying a 20 N load. The scanning electron microscope was used to examine the morphology of broken and worn surfaces of specimens. Test results exhibit the flexural strength and flexural modulus of SCFs reinforced polyester composite was decreased with the increment of fiber contents. However, the same trend was not observed for the impact test. Thus, the addition of 2 wt. % SCFs onto pure polyester improves the energy absorbing of pure polyester nearly by 210%. The present study also reveals the wear resistance properties of SCFs reinforced polyester composites are indirectly related with of SCFs content. Hence, the highest wear resistance capacity was observed for PES0.5CF of about 1.51×10-3 mm3/m. Therefore, the addition of small amounts of SCFs onto pure polyester attributes significant effects in tribological behaviors compared to mechanical properties.

Anahtar Kelimeler

Short Carbon Fibers, Polyester, Flexural Strength, Impact Strength, Wear Resistance

Kaynakça

• [1] S. Al Khaddour and M. B. Ibrahim, ‘Experimental Investigation on Tensile Properties of Carbon Fabric-Glass Fabric-Kevlar Fabric-Epoxy Hybrid Composite Laminates.’, Revue des Composites et des Matériaux Avancés, vol. 31, no. 3, 2021.
• [2] L. Markovičová, V. Zatkalíková, and P. Hanusová, ‘Carbon fiber polymer composites’, Quality Production Improvement-QPI, vol. 1, 2019.
• [3] M. A. Masuelli, ‘Introduction of fibre-reinforced polymers- polymers and composites: concepts, properties and processes’, in Fiber reinforced polymers-the technology applied for concrete repair, IntechOpen, 2013.
• [4] S. Matei, M. Stoicanescu, and A. Crisan, ‘Composites with short fibers reinforced epoxy resin matrix’, Procedia Technology, vol. 22, pp. 174–181, 2016.
• [5] Dr. T. Nancharaiah and T. Anusha, ‘Experımental investıgatıon on mechanıcal propertıes of Banana fıber polyester resin composites and carbon fiber polyester resin composites’, International Journal of Application or Innovation in Engineering & Management, vol. 6, pp. 2319 – 4847, 2017.
• [6] R. B. Durairaj, G. Mageshwaran, and V. Sriram, ‘Investigation on Mechanical Properties of Glass and Carbon Fiber Reinforced With Polyester Resin Composite’, International Journal of ChemTech Research, p. 7, 2016.
• [7] K. J. Wong, U. Nirmal, and B. K. Lim, ‘Impact behavior of short and continuous fiber-reinforced polyester composites’, Journal of Reinforced Plastics and Composites, vol. 29, no. 23, pp. 3463–3474, 2010.
• [8] G. Xian and Z. Zhang, ‘Sliding wear of polyetherimide matrix composites: I. Influence of short carbon fibre reinforcement’, Wear, vol. 258, no. 5–6, pp. 776–782, 2005.
• [9] Y. Akgul, H. Ahlatci, M. E. Turan, M. A. Erden, Y. Sun, and A. Kilic, ‘Influence of carbon fiber content on bio-tribological performances of high-density polyethylene’, Materials Research Express, vol. 6, no. 12, p. 125307, 2019.
• [10] D. I. Chukov et al., ‘Investigation of structure, mechanical and tribological properties of short carbon fiber reinforced UHMWPE-matrix composites’, Composites Part B: Engineering, vol. 76, pp. 79–88, 2015.
• [11] R. Voicu, ‘Structural Characterization and Mechanical Behaviour of Carbon Fiber/epoxy Composite for Aeronautical Field’, Materiale Plastice, vol. 49, no. 1, pp. 34–40, 2012.
• [12] O. Arsun, Y. Akgul, and H. Simsir, ‘Investigation of the properties of Al7075-HTC composites produced by powder metallurgy’, Journal of Composite Materials, vol. 55, no. 17, pp. 2339–2348, 2021.
• [13] A. Olszewski, P. Nowak, P. Kosmela, and \Lukasz Piszczyk, ‘Characterization of Highly Filled Glass Fiber/Carbon Fiber Polyurethane Composites with the Addition of Bio-Polyol Obtained through Biomass Liquefaction’, Materials, vol. 14, no. 6, p. 1391, 2021.
• [14] T. A. Sebaey, D. K. Rajak, and H. Mehboob, ‘Internally stiffened foam-filled carbon fiber reinforced composite tubes under impact loading for energy absorption applications’, Composite Structures, vol. 255, p. 112910, 2021.
• [15] E. Feyzullahoğlu and İ. Recep, ‘Farklı Yük ve Hızlarda Cam Elyaf Takviyeli Polyester Kompozit Malzemelerin Aşınması’, El-Cezeri Journal of Science and Engineering, vol. 5, no. 1, pp. 259–266.