MURAT KOYUNBAKAN, S. Hakan YETGİN, FERHAT YILDIRIM, Gözde KUŞ, VOLKAN ESKİZEYBEK, Abdurrahman GENÇ

Karbon Elyaf Dolgulu Pa6 Polimer Kompozitlerinin Aşınma Özellikleri Üzerine Uygulanan Yük ve Kayma Hızının Etkisi

Bu çalışmada, karbon elyaf (KE) dolgulu poliamit 6 (PA6) polimer kompozitlerinin sürtünme ve aşınma davranışları üzerine kayma hızı ve yükün etkileri incelenmiştir. PA6 polimeri ve PA6 kompozitlerinin sürtünme ve aşınma testleri 1040 çelik diske karşı kuru ortamda pim-disk sistemi ile gerçekleştirilmiştir. Tribolojik testler oda sıcaklığında, farklı yük (10-40N) ve kayma hızı (0.4-1.2m/s) şartlarında yapılmıştır. Deneysel çalışmalar sonucunda, tüm polimer numuneler için yükün ve kayma hızının artmasıyla sürtünme katsayısı artmıştır. PA6 kompozitleri için aşınma oranı 10-10 mm3/Nm civarında elde edilmiştir. PA6 polimer kompozitlerinin aşınma oranını etkileyen en önemli parametrenin uygulanan kayma hızı olduğu belirlenmiştir.

The Effect of Sliding Speed and Applied Pressure Values on the Wear Behaviour of Carbon Fiber Filled Polyamide 6 (Pa6) Polymers

In this investigation, the influence of sliding speed and load values on the friction and wear behaviour of carbon fiber filled polyamide 6 (PA6) composites were studied. Friction and wear tests of PA 6 polymer and PA6 polymer composites versus 1040 steel were carried out at dry condition on a pin-on-disc arrangement. Tribological tests were performed at room temperature at different loads (10-40N) and sliding speeds (0.4-1.2 m/s). The results showed that, for all polymers used in this investigation, the coefficient of friction increases linearly with the increase in load and sliding speed. The specific wear rate for PA6 composites were in the order of 10-10 mm3/Nm. The most important parameter affecting the wear rate of PA6 polymer composites was determined to be the sliding speed.

PDF

___

[1] H. Unal, "Morphology and mechanical properties of composites based on polyamide 6 and mineral additives", Materials & Design, vol. 25, pp. 483-487, 2004.
[2] E. Kuram, E. Tasci, A. I. Altan, M. M. Medar, F. Yilmaz and B. Ozcelik, "Investigating the effects of recycling number and injection parameters on the mechanical properties of glass-fibre reinforced nylon 6 using Taguchi method", Materials & Design, vol. 49, pp. 139-150, August 2013.
[3] X. Q. Liu, W. Yang, B. H. Xie and M. B. Yang, "Influence of multiwall carbon nanotubes on the morphology, melting, crystallization and mechanical properties of polyamide 6/acrylonitrile- butadiene-styrene blends", Materials & Design, vol. 34, pp. 355-362, February 2012.
[4] B. J. Briscoe, "Wear of polymers: an easy on fundamental aspects", Tribology, vol. 14, pp. 231- 243, 1981.
[5] G. B. Hattotuwa, H. Premalal and A. Ismail Baharin, "Comparison of the mechanical properties of rice husk powder filled polypropylene composites with talc filled polypropylene composites", Polymer Test, vol. 21, pp. 833-839, 2002.
[6] M. Z. Rong, Q. Y. Zhang, X. H. Zheng, M. Zeng, R. Walter and K. Friedrich, "Structure-property relationship of irradiation grafted nano-inorganic particle filled poly propylene composites", Polymer, vol. 42, pp. 167- 183, 2001.
[7] B. Suresha, G. Chandramohan, P. R. Sadananda, Rao, P. Samapathkumaran and S. Seetharamu, "Investigation of the friction and wear behavior of glass-epoxy composite with and without graphite filler", Journal Reinforced Plastics Composites, vol. 26, pp. 81-93, 2007.
[8] B. Suresha, G. Chandramohan, M.N. Renukappa and Siddaramaiah, "Mechanical and tribological properties of glass-epoxy composites with and without graphite particulate filler", Journal of Applied Polymer Science, vol. 103, pp. 2472-2480, 2007. [9]
B. Suresha, Siddaramaiah, Kishore, P. Samapthkum aran and S. Seetharamu, "Investigations on the influence of graphite filler on dry sliding wear and abrasive wear behaviour of carbon fabric reinforced epoxy composites", Wear, vol. 267, pp. 1405-1414, 2009.
[10] B.N. Ravi Kumar, B. Suresha and M. Venkataramareddy, "Effect of particulate fillers on mechanical and three-body abrasive wear behaviour of polyamide66/polypropylene nanocomposites", Materials & Design, vol. 30, pp. 3852-3858, 2009.
[11] Y. Yamamoto and M. Hashimoto, "Friction and wear of water lubricated PEEK and PPS sliding contacts: part 2. Composites with carbon or glass fibre", Wear, vol. 257 no 1, pp. 181-189, 2004.
[12] H. Zeng, G. He and G. Yang, "Friction and wear of poly (phenylene sulphide) and its carbon fibre composites: I unlubricated" Wear, vol. 116, no 1, pp. 59-68, 1987.
[13] K. Tanaka, "Friction and wear of glass and carbon fiber-filled thermoplastic polymers", Journal of Tribology, vol. 99, no.4, pp. 408-414, 1997.
[14] B. Suresha, G. Chandramohan, P. Samapthkumaran and S. Seetharamu, "Three-body abrasive wear behaviour of carbon and glassfiber reinforced epoxy composites", Materials Science Engineering A, vol. 443 no 1, pp. 285-291, 2007.
[15] R. Nakao, H. Inoya and H.Hamada, "Mechanical properties of injection molded products fabricated by Direct Fiber Feeding Injection Molding", Energy Procedia, vol. 89, pp. 307-312, 2016.
[16] K. P. Sampathkumaran, S. Seetharamu, S. Vynatheya, A. Murali, R.K. Kumar, "SEM observations of the effects of velocity and load on the sliding wear characteristics of glass fabricepoxy composites with different fillers", Wear, vol. 237, pp. 20-27. 2000.
[17] Z. Cai and W. Wang, "Friction and wear properties of polyamide 66 composites filled with carbon fiber under dry sliding and oil lubricated condition", Applied Mechanics and Materials, vol. 148-149, pp. 612-615, 2012.
[18] J. Li and Y.C. Xia, "Evaluation of Tribological Properties of Carbon Fiber-Reinforced PA6 Composites", Polymer Composites, pp. 536-542, 2010.
[19] W. Luo, L. Qi, L. Yi, Z. Shengtai, Z. Huawei and L. Mei, "Enhanced mechanical and tribological properties in polyphenylene sulfide/polytetrafluoroethylene composites reinforced by short carbon fiber", Composites Part B: Engineering, vol. 91, pp. 579-588, 2016.
[20] B. Suresha, B.N. Ravi Kumar, M. Venkataramareddy and T. Jayaraju, "role of micro/nano fillers on mechanical and tribological properties of polyamide66/polypropylene composites", Materials & Design, vol. 31, pp. 1993-2000, 2010.
[21] H. Unal, A. Mimaroglu and V. Serdar, "Dry sliding performance of thermoplastics against reinforced unsaturated polyester (BMC): In use in electrical contact breakers components", Wear, pp. 841-847, 2006.
[22] H. Unal, U. Sen and A. Mimaroglu, "Dry sliding wear characteristics of some industrial polymers againt steel counterface", Tribology International, vol. 37, pp. 727-732, 2004.
[23] W. Luo, Q. Liu, Y. Li, S. Zhou, H. Zou and M. Liang, "Enhanced mechanical and tribological properties in polyphenylene sulfide/polytetrafluoroethylene composites reinforced by short carbon fiber", Composites Part B: Engineering, Vol. 91, pp. 579-588, April 2016.
[24] P. Samyn, P. De Baets and G. Schoukens, "Influence of internal lubricants (PTFE and silicon oil) in short carbon fibre-reinforced polyimide composites on performance properties", Tribol. Letter, vol. 36, no 2, pp. 135-146, 2009.