علوم و فناوری کامپوزیت

مطالعه تجربی دوام چرخدنده‌های نانوکامپوزیتی پلی آمید6-پلی پروپیلن-کربنات کلسیم

نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناسی ارشد، دانشکده مهندسی مکانیک، دانشگاه تبریز، تبریز، ایران

2 دانشیار، دانشکده مهندسی مکانیک، دانشگاه تبریز، تبریز، ایران

چکیده

چرخدنده‌های نانوکامپوزیتی بر پایه آمیخته پلی آمید 6-پلی پروپیلن (با نسبت وزنی 33/67 PA6/PP) محتوی نانوذرات کربنات کلسیم (5/2 تا 10 قسمت وزنی) و سازگارکننده PP-g-MAH (5 قسمت وزنی) به روش قالب‌گیری تزریقی تولید شد. شکل شناسی نمونه‌ها با میکروسکوپ الکترونی روبشی مطالعه شد. با استفاده از یک دستگاه آزمون دوام چرخدنده، مقدار سایش و دمای سطحی دندانه‌ها و همچنین عمر کاری چرخدنده‌ها تحت دو گشتاور خروجی 9/8 و  Nm8/14 اندازه‌گیری شد. در همه آزمایش‌ها، مقادیر دما و سایش برای چرخدنده محرک بیشتر از چرخدنده متحرک بود. به‌کارگیری 5/2 و 5 قسمت وزنی نانو ذرات، باعث کاهش دما و سایش چرخدنده‌ها شد. مقدار سایش در چرخدنده‌های حاوی 5/2 قسمت وزنی از نانو ذرات کربنات کلسیم تحت گشتاورهای 9/8 و Nm 8/14 به‌ترتیب حدود 60 و 83 درصد کمتر از چرخدنده‌های پلی آمیدی خالص مشاهده شد. حداکثر عمر تحت گشتاور Nm 8/14 (حدود 63 هزار دور)، در چرخدنده‌های نانوکامپوزیتی محتوی 5/2 قسمت وزنی از نانو کربنات کلسیم مشاهده شد که این مقدار تقریبا 200 درصد  بیشتر از عمر چرخدنده‌های پلی آمیدی خالص (حدود 21 هزار دور) بود. افزایش دوام چرخدنده‌های پایه پلیمری در اثر وجود نانوذرات کربنات کلسیم را می‌توان به بهبود مقاومت خمشی، سایشی و گرمایی دنده‌ها نسبت داد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Experimental studies on the durability of PA6-PP-CaCO3 nanocomposite gears

نویسندگان [English]

  • Rasool Mohsenzadeh 1
  • Karim Shelesh-Nezhad 2

1 Department of Mechanical Engineering, University of Tabriz, Tabriz, Iran

2 Department of Mechanical Engineering, University of Tabriz, Tabriz, Iran

چکیده [English]

Nanocomposite gears based on Polyamide 6/Polypropylene (PA6/PP 67/33) blend containing 2.5 to 10 phr of nano-CaCO3 and 5 phr of maleated polypropylene (PP-g-MAH) as compatibilizer were produced by injection molding. The morphology was studied using scanning electron microscopy. The wear and temperature of gears teeth as well as gears working lives were characterized by employing a gear test rig under two different output torques including 8.9 and 14.8 Nm. In all experiments, the teeth’s temperature and wear values for driver gear were higher as compared to those of driven gear.  The incorporation of 2.5 and 5 phr nano-CaCO3, led to the reduction of temperature and wear rate of gears. The wear rates of gears containing 2.5 phr of nano-CaCO3, under the torque of 8.9 and 14.8 Nm, were 60 and 83% lower than those of neat PA6 gears respectively. The maximum gear life under the torque of 14.8 Nm (63000 revolutions) was observed in nanocomposite gears containing 2.5 phr of nano-CaCO3 which was nearly 200% higher than that of neat PA6 gears (21000 revolutions). The raise of Polymer based gears performances as a result of CaCO3 nanoparticles inclusion may be attributed to the improvements of gear teeth flexural, wear and heat resistance

کلیدواژه‌ها [English]

  • Nanocomposite
  • Polyamide 6
  • Polypropylene
  • Nano-CaCO3
  • gear life
مراجع
 
[1]    Senthilvelan, R. G., “Effect of Rotational Speed on the Performance of Unreinforced and Glass Fiber Reinforced Nylon6 Spur Gears,” Journal of Materials and Design, Vol. 28, pp. 765-772, 2007.
[2]    Imrek, H., “Performance Improvement Method for Nylon 6 Spur Gears,”Journal of Tribology sInternation, Vol. 42, pp. 503-510, 2009.
[3]    Alfredo, E., “Selection of Polymeric Materials,” USA: William Andrew, pp. 26-27, 2008.
[4]    Faruk, M. Hilal, C. and Mustafa, K., “Fatigue Properties of Polypropyleneinvolute Rack Gear Reinforced with Metallic Springs,” Journal of Materials and Design, Vol. 27, pp. 427-433, 2006.
[5]    Kohan, MI., “Nylon Plastics” handbook, Munich: Carl Hanser.pp. 32-43, 1995.
[6]    Vlasveld, D. P. N. Groenewold, J., Bersee, H. E. N. and Picken, S. J., “Moisture Absorption in Polyamide-6 Silicatenanocompo and Its Influence on the Mechanical Properties,” Journal of Polymer, Vol. 46, pp. 12567-12576., 2005.
[7]    Evans, D. C., “Polymer–Fluid Interaction in Relation to Wear,” In: DowsonD, Godet M, Taylor CM, editors. Proceedings of the third Leeds–Lyon symposium on tribology, the wear of non-metallic materials.London: Mechanical Engineering Publication Ltd.; pp. 47–56. 1978.
[8]    Srinath, G., “Sliding Wear Performance of Polyamide6–Clay Nano Composites in Water,” Journal of Composites Science and Technology, Vol. 67, pp. 339-405, 2007.
[9]    Orang, H, and Matlabi, M., “Comparison of Mechanical Properties of Polyamide 6 - Calcium Carbonate Nano Composites,” In Persian, in 11th Conference on Manufacturing Engineering, Tabriz University: 2010.
[10]  Montakhabi-Kalajahi, S., “The Effect of Adding Mineral Nanoparticles on the Mechanical Properties of PA/PP Alloy,” In Persian, Ms. Thesis, Department of Mechanical Engineering, Tabriz University, 2011.
[11]  Mohsenzadeh, R., Seyyed Noorani. M. R. and Nozad Bonab, A., “Experimental Study on the Thermal Behavior and Mechanical Properties of PA6/CaCO3Nanocomposites” In Persian. Nanomaterials. Vol. 21, No. 7. pp. 45-52.2015.
[12]  Kusmono. M. I. C. Takeichi, T. and Rochmadi., “Enhancement of Properties of PA6/PP Nano Composites Via Organic Modification and Compatibilization,” Express Polymer Letters, Vol. 2, No.9, PP. 655-664. 2008.
[13]  Nozad Bonab, A. Seyyed Noorani, M.R., and Mohsenzadeh, R., “Experimental Study on the Water Absorption and Tribological Properties of PA6/CaCO3 Nanocomposites” In Persian. Modares Mechanical Engineering. Vol. 15, No, 5 .pp, 108-114, 2015.
[14]  Suresha, B. RaviKumar, B. N. and Venkataramareddy, M., “Role of Micro/Nano Fillers on Mechanical and Tribological Properties of Polyamide66/Polypropylene Composites,” Journal of Materials and Design, Vol. 31, pp. 19-23, 2010.
[15]  Zhang, M. Wang, X.B. Fu, X.S. and Xia, Y.Q., “Performance and Anti-Wear Mechanism of CaCO3 Nanoparticles as a Green Additive in Poly-Alpha-Olefin,” Tribol, Vol. 42, 1029–1039. 2009.
[16]  Wright, N.A. and Kukureka, S.N., “Wear Testing and Measurement Techniques for Polymer Composite Gears,” Wear, Vol. 251, pp. 1567-1578, 2001.
[17]  Mao, K., “Friction and Wear Behavior of Acetal and Nylon Gears,” Wear, Vol. 267, pp. 639-645, 2009.
[18]  Johnney Mertens, A. and Gurunathan, R., “Effect of Mating Metal Gear Surface Texture on the Polymer Gear Surface Temperature” Materials Today: Proceedings 2. pp. 1763-1769, 2015.
[19]  Kirupasankar, C., and Senthilvelan, S., “Transmission Efficiency of Polyamide Nanocomposite Spur Gears,” Journal of Materials and Design, Vol. 112 pp. 1-32, 2014.
[20]  Ayman, A., “Friction and Wear of Polymer Composites Filled by Nano-Particles,” World Journal of Nano Science and Engineering, Vol. 2, pp. 32-39, 2012.
[21]  Li, D. and Chang, A., “Enhancement Effect of Nanoparticles on the Sliding Wear of Shortfiber-Reinforced Polymer Composites,” Tribology International, Vol. 43, pp. 2355-2364, 2010.
[22]  Chang, L., “On the Sliding Wear of Nanoparticle Filled Polyamide 66 Composites,” Composites Science and Technology, Vol. 66, pp. 3188-3198, 2006.
[23]  Zhang, Q., “Crystallization and Impact Energy of Polypropylene/CaCO3. Nanocomposites with Nonionic Modifier,” In Persian, Journal of Polymer, Vol. 45, pp. 5985-5994, 2004.
[24]  Kemal, I. Whittle, A. Burford, R. Vodenitcharova, T. and Hoffman, M., “Toughening of Unmodified Polyvinylchloride through the Addition of Nanoparticulate Calcium Carbonate,” Polymer, Vol. 50, pp. 4066-4079, 2009.
[25]  Lin, Y. Chen, H. Chan, C.M. and Wu, J., “High Impact Toughness Polypropylene/CaCO3 Nanocomposites and the Toughening Mechanism,” Macromolecules, Vol. 41, pp. 9204-9213, 2008.
[26]  Lin, Y. Chen, H. Chan, C.M. and Wu, J., “Effects of Coating Amount and Particle Concentration on the Impact Toughness of Polypropylene/CaCO3 Nanocomposites,” European polymer journal, Vol. 47, pp. 294-304, 2010.
[27]  Kiss, A. Fekete, E. and Pukanszky, B., “Aggregation of CaCO3 Particles in PP Composites: Effect of Surface Coating,” Journal of Science and Technology of Composites, Vol. 67, pp. 1574-1583, 2007.
[28]  Chan, C.M. Wu, J. Li, J.X. and Cheung, Y.K., “Polypropylene/Calcium Carbonate Nanocomposites,” Polymer, Vol. 43, pp. 2981-2992, 2002.
[29]  Jordan, J. Jacob, KI. Tannenbaum, T. Sharaf, M. A. and Janise, I., “Experimental Trends in Polymer Nanocomposites,” Mater Sci Eng, Vol. 393, pp. 1-11, 2005.
[30]  Scheirs, J. Compositional and Failure Analysis of Polymers—Apractical Approach. Chichester: John Wiley and Sons; 2000.
[31]  Tripathi, D. Practical Guide to Polypropylene. UK: Rapra Technology Limited; 2002.
[32]  Lam,T.D. Hoang, T.V. Quang, D.T. and Kim, J.S., “Effect of Nanosized and Surface-Modified Precipitated Calcium Carbonate on Properties of CaCO3/Polypropylene Nanocomposites,” Materials Science and Engineering, Vol. 501, pp. 87-93, 2009.
[33]  Mao, K., “Friction and Wear Behavior of Acetal and Nylon Gears,” Wear, Vol. 267, pp. 639-645, 2009.
Mao, K., “A New Approach for Polymer Composite Gear Design,” Wear, Vol. 262, pp. 432-441, 2007
علوم و فناوری کامپوزیت
دوره 3، شماره 2
شهریور 1395
صفحه 147-156
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