DOI: 10.5937/jaes0-30899
This is an open access article distributed under the CC BY 4.0
Volume 20 article 907 pages: 85-90
This paper aims to investigate the joining of polypropylene using friction stir welding (FSW). FSW parameters were the rotation speed of 620 rpm, the travel speed of 7.3 mm/min, and 13 mm/min. The tensile test was using a universal testing machine, and the results of the tensile test were related to the degree of crystallinity. X-ray diffraction (XRD) examined the crystallite size and degree of crystallinity. The thermal analysis was using thermogravimetry analysis/differential scanning calorimetry (TGA/DSC). This paper explained the degree of crystallinity effects on the thermal stability at the weld nugget area due to travel speed. The findings showed FSW with a travel speed of 7.3 mm/min had a bigger crystallite size and degree of crystallinity than that with a travel speed of 13 mm/min. There was a fusion of crystals also recrystallization occurred. It was an effect of the difference in the length of time exposed to heat during the FSW process. A travel speed of 7.3 mm/min sample had high tensile strength because it obtained sufficient heat for an extra complete joint. In terms of thermal stability, the specimen with a lower travel speed showed a higher stability level than the specimen with a higher travel speed in the higher degree of crystallinity.
The author appreciations the Ministry of Education and Culture of the Republic of Indonesia, for supporting this research in the doctoral program at Universitas Brawijaya, Malang, Indonesia.
1. Huang, Y., Meng, X., Xie, Y., Wan, L., Lv, Z., Cao, J., and Feng, J. (2018). Friction stir welding/processing of polymers and polymer matrix composites. Compososites: Part A Applied Science and Manufacturing, vol. 105, pp. 235–257, DOI 10.1016/j.compositesa.2017.12.005.
2. Kiss, Z., and Czigány, T. (2007). Applicability of friction stir welding in polymeric materials. Perioda Polytechnica, vol. 51, no. 1, pp. 15–18, DOI 10.3311/pp.me.2007-1.02.
3. Kiss, Z., and Czigány, T. (2012). Microscopic analysis of the morphology of seams in friction stir welded polypropylene. Express Polymer Letters, vol. 6, no. 1, pp. 54–62, DOI 10.3144/expresspolymlett.2012.6.
4. Ethiraj, N., Meikeerthy, S., and Sivabalan, T. (2020). Submerged friction stir welding: An overview of results of experiments and possible future works. Engineering and Applied Science Research, vol. 47, no. 1, pp. 111–116, DOI 10.14456/easr.2020.11.
5. Mendes, N., Loureiro, A., Martins, C., Neto, P., and Pires, J. N. (2014). Effect of friction stir welding parameters on morphology and strength of acrylonitrile butadiene styrene plate welds. Materials and Design, vol. 58, pp. 457–464, DOI 10.1016/j.matdes.2014.02.036.
6. Panneerselvam, K., and Lenin, K. (2014). Joining of Nylon 6 plate by friction stir welding process using threaded pin profile. Material and Design, vol. 53, pp. 302–307, DOI 10.1016/j.matdes.2013.07.017.
7. Gao, J., Shen, Y., Zhang, J., and Xu, H. (2014). Submerged Friction Stir Weld of Polyethylene Sheets. Journal of Applied Polymer Science, pp. 1–8, DOI 10.1002/app.41059
8. Mostafapour, A. and Azarsa, E. (2012). A study on the role of processing parameters in joining polyethylene sheets via heat-assisted friction stir welding : Investigating microstructure, tensile and flexural properties. International Journal of The Physical Sciences, vol. 7, no. 4, pp. 647–654, DOI 10.5897/IJPS11.1653.
9. Eslami, S., Ramos, T., Tavares, P. J., and Moreira, P. M. G. P. (2015). Effect of Friction Stir Welding Parameters with Newly Developed Tool for Lap Joint of Dissimilar Polymers. Procedia Engineering, vol. 114, pp. 199–207, DOI 10.1016/j.proeng.2015.08.059.
10. Capone, C., Landro, Di, L., Inzoli, F., Penco, M., Sartore, L., and Vinci, L. (2007). Thermal and Mechanical Degradation During Polymer Extrusion Processing. Polymer Engineering and Science, pp. 4–10, DOI 10.1002/pen.20882.
11. Kumar, R., Singh, R., Ahuja, I. P. S., Penna, R., and Feo, L. (2018). Weldability of thermoplastic materials for friction stir welding- A state of the art review and future applications. Composites Part B, vol. 137, no. October 2017, pp. 1–15, DOI 10.1016/j.compositesb.2017.10.039.
12. Jaya S. (2018). Product Catalogue. Sumber Jaya Stockist and Supplier, Jakarta, Indonesia.
13. Sahu S. K., Mishra, D., Mahto, R. P., Sharma, V. M., Pal, S. K., Pal, K., Banerjee, S., and Dash, P. (2018). Friction stir welding of polypropylene sheet, Engineering Science and Technology, an International Journal, vol. 21, no. 2, pp. 245–254, DOI 10.1016/j.jestch.2018.03.002
14. Lei, F., Yu, H., Yang, S., Sun, H., Li, J., Guo, S., Wu, H., Shen, J., Chen, R., and Xiong, Y. (2016). Analysis of crystalline structure and morphology of isotactic polypropylene under the coexistence of organic montmorillonite particles and shear flow, Polymer, vol. 82, pp. 274–284, DOI 10.1016/j.polymer.2015.11.053.
15. Nandhini, R., Kumar, R. D., Muthukumaran, S., and Kumaran, S. (2019). Analysis of Mechanical and Crystalline Characteristics of Polyamide 66 Joints Welded by a Novel Friction Stir Welding, Arabian Journal for Science and Engineering, DOI 10.1007/s13369-019-03770-5
16. Simões, F., and Rodrigues, D. M. (2014). Material flow and thermo-mechanical conditions during Friction Stir Welding of polymers: Literature review, experimental results, and empirical analysis, Materials and Design, vol. 59, pp. 344–351, DOI 10.1016/j.matdes.2013.12.038.
17. Saeedy S., and Besharati, M. K. (2011). Investigation of the effects of critical process parameters of friction stir welding of polyethylene, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, vol. 225, no. 8, pp. 1305–1310, DOI 10.1243/09544054JEM1989.
18. Aghajani, H., Simchi, A., and Lambiase, F. (2019). Friction stir welding of polycarbonate lap joints : Relationship between processing parameters and mechanical properties, Polymer Testing, vol. 79, DOI 10.1016/j.polymertesting.2019.105999.
19. Gu, P., Zhu, X., and Yang, D. (2019). Effect of annealing temperature on the performance of photoconductive ultraviolet detectors based on ZnO thin films, Applied Physics A: Materials Science and Processing, vol. 125, no. 50, pp. 1-8, DOI 10.1007/s00339-018-2361-3.
20. Mofokeng, J. P., Luyt, A. S., Tábi, T., and Kovács, J. (2012). Comparison of injection-molded, natural fiber-reinforced composites with PP and PLA as matrices, Journal of Thermoplastic Composite Materials, vol. 25, no. 8, pp. 927–948, DOI 10.1177/0892705711423291.
21. Motlagh, N. K., Khonakdar, H. A., Jafari, S. h., Sarmad, M. P., Javadi, A., and Goodarzi, V., (2019). An experimental and theoretical mechanistic analysis of thermal degradation of polypropylene/polylactic acid/clay nanocomposites, Polymer Advanced Technologies, vol. 30, no. 11, pp. 2695–2706, DOI 10.1002/pat.4699.
22. Gradys, A., Sajkiewicz, P., Minakov, A. A., Adamovsky, S., Schick, C., Hashimoto, T., and Saijo, K. (2005). Crystallization of polypropylene at various cooling rates, Materials Science and Engineering A, vol. 413–414, pp. 442–446, DOI 10.1016/j.msea.2005.08.167.
23. Luo, S., Yi, L., Zheng, Y., Shen, J., and Guo, S. (2017). Crystallization of polypropylene in multilayered spaces: Controllable morphologies and properties, European Polymer Journal, vol. 89, pp. 138–149, DOI 10.1016/j.eurpolymj.2017.02.013.
24. Poletto, M., Zattera, A. J., Forte, M. M.C., and Santana, R. M.C. (2012).Thermal decomposition of wood: Influence of wood components and cellulose crystallite size, Bioresource Technology, vol. 109, pp. 148–153, DOI 10.1016/j.biortech.2011.11.122.
25. Qian, X., Guo, N., Lu, L., Wang, X., Wang, H., and Shao, G. (2018). Effect of Phosphorus-Based Flame Retardants and PA6 on the Flame Retardancy and Thermal Degradation of Polypropylene,” Polym. - Plast. Technol. Eng., vol. 57, no. 15, pp. 1567–1575, DOI 10.1080/03602559.2017.1410842.
26. Al-Salem, S. M., Sharma, B. K., Khan, A. R., Arnold, J. C., Alston, S. M., Chandrasekaran, S. R., and Al-Dhafeeri, A. T. (2017). Thermal degradation kinetics of virgin polypropylene (PP) and PP with starch blends exposed to natural weathering, Industrial and Engineering Chemistry Research, vol. 56, no. 18, pp. 5210–5220, DOI 10.1021/acs.iecr.7b00754.