Effect of Injection Molding Parameters on Mechanical Properties of Keychain Made of Recycled Polypropylene

  • Authors

    • Koay Mei Hyie
    • Anizah Kalam
    • Muhammad Basyar Bin Ramli
    2018-11-27
    https://doi.org/10.14419/ijet.v7i4.18.21925
  • Flexural, injection molding, polypropylene, recycle, tensile

  • Abstract

    Injection moulding is a common method of plastic processing in which thermoplastic materials can be moulded into arbitrary complex shapes. In order to save the environment, the plastic waste from the injection moulding process needs to be recycled to overcome the non-biodegradable issues. This study is focused on producing the UiTM keychain using injection molding process from the mixing of a specific amount of virgin Polypropylene (vPP) and recycled Polypropylene (rPP). The effect of different injection moulding parameters on mechanical properties of the UiTM keychain on different weight ratio between virgin and recycled Polypropylene was investigated. The effect of injection molding parameters namely holding time and cooling time to the shrinkage of the UiTM keychain was also studied. Mechanical properties were determined by the tensile and flexural tests. Based on the test results, the keychain that contained 80 wt% of virgin Polypropylene and 20 wt% recycled Polypropylene has the most optimum weight ratio. Holding time was the most effective factor to the shrinkage of product. Cooling time was not significant in affecting the shrinkage and tensile properties of PP products. The study helps to promote the usage of recycled PP in the manufacturing industries.

     

     

  • References

    1. [1] A. A. S. M. Atiqah, H. Salmah, Z. Firuz & D. N. U. Lan (2014), The effect of blend ratio on properties of recycled polypropylene / recycled high density polyethylene geo- composites. Malaysian Journal of Analytical Science 18, 2, 344–350.

      [2] R. Zuraimi, M. A. Sulaiman, E. Mohamad & J. A Ghani (2017) Tensile strength analysis of high density polyethylene for injection moulded parts. Journal of Advanced Manufacturing Technology 11, pp. 151–164.

      [3] D. Ľudmila and G. František (2011), Influence of regrind on properties of plastics produced by injection moulding. Materials Engineering 18, 2, pp. 44–48.

      [4] P. Raos & J. Stojsic (2014), Influence of injection moulding parameters on tensile strength of injection moulded part. Journal of Manufacturing and Industrial Engineering, 13, 3-4, pp.1-3.

      [5] M. M. Raj, H. V Patel, L. M. Raj, & N. K. Patel (2013), Studies on mechanical properties of recycled polypropylene blended with virgin polypropylene. International Journal of Science Inventions Today, 2, 3, pp. 194-203.

      [6] H. Jmal, N. Bahlouli, C. Wagner-Kocher, D. Leray, F Ruch, J. N. Munsch & M. Nardin (2018), Influence of the grade on the variability of the mechanical properties of polypropylene waste, Waste Management. 75, pp. 160-173.

      [7] G. Singh, M. K. Pradhan & A. Verma (2015), Effect of injection moulding process parameter on tensile strength using taguchi method. International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering 9, 10, pp. 1844-1879.

      [8] A. Batwara & P. Sharma (2016), An experimental study of parameters on plastic product using mold flow simulation-anova based analysis. European Journal of Advances in Engineering and Technology, 3, 1, pp. 5 - 11.

      [9] G. S. Dangayach & D. Kumar (2012), Reduction in defect rate by taguchi method in plastic injection molded components. Advanced Materials Research, 488-489, pp. 269 - 273.

      [10] A. Wavare & S. Ubale (2016), Parametric investigation for pp homopolymer ( 1110 mas ) in plastic injection molding process using taguchi method. International Journal of Engineering Research and General Science 4, 2, pp. 323-331.

      [11] D Kusić and A HanÄiÄ, Influence of molding conditions on the shrinkage and warpage behavior of standardized test specimens, AIP Conference Proceedings 1779, (2016), 020017, https://doi.org/10.1063/1.4965468

      [12] Vannessa Goodship ed. (2017), Practical Guide to Injection Moulding 2nd ed., United Kingdom Smithers Information Ltd., pp.163-210.

      [13] A. Kiaeifar, M. Saffari, & B. Kord (2011), Comparative investigation on the mechanical properties of wood plastic composites made of virgin and recycled plastics. World Applied Sciences Journal, 14, pp. 735–738.

      [14] R. Prabhu, S. Mendonca, Gladson & T. Bhat (2016), Mechanical and tribological properties of injection moulded modified CaCO3 / PP, ldpe composites. American Journal of Materials Science 6(4A), pp. 61–66.

      [15] R. Demori, E. Ashton, V. F. Weschenfelder, L. H. A. Cândido, W. Kindlein, & R. S. Mauler, Effect of reprocessing cycles on the degradation of polypropylene copolymer filled with talc or montmorillonite during injection molding process, AIP Conference Proceedings 1664, 110014 (2015); doi: 10.1063/1.4918489

      [16] F. Mirjalili, L. Chuah, and E. Salahi (2014), Mechanical and morphological properties of polypropylene/nano α-Al2O3 composites,†Sci. World J., 2014, pp. 1–12.

      [17] M. L. Berins (1991), SPI Plastics Engineering Handbook of The Society of The Plastics Industry, Inc. Kluwer Academic Publishers., pp. 383-423.

      Fu Gu, Philip Hall, Nicholas J Miles, Qianwen Ding and Tao Wu (2014), Improvement of mechanical properties of recycled plastic blends via optimizing processing parameters using the Taguchi method and principal component analysis. Materials and Design 62, pp. 189-198.

  • Downloads

  • How to Cite

    Mei Hyie, K., Kalam, A., & Basyar Bin Ramli, M. (2018). Effect of Injection Molding Parameters on Mechanical Properties of Keychain Made of Recycled Polypropylene. International Journal of Engineering & Technology, 7(4.18), 237-241. https://doi.org/10.14419/ijet.v7i4.18.21925

    Received date: 2018-11-27

    Accepted date: 2018-11-27

    Published date: 2018-11-27