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Heat Transfer During Solidification of Polyethylene Terephthalate (PET) in Injection Molding

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Abstract

In injection molding, heat transfer at the polymer/mold interface during solidification of the polymer significantly affects the cooling rate, microstructure, and hence the product quality. An accurate estimation of the boundary heat flux transients is essential for the successful simulation of polymer solidification, which can aid in predicting and preventing potential defects that may arise from improper filling and cooling. Simulation studies also help in optimizing the cycle time with different process parameters. In the present work, a pneumatically-operated injection molding machine capable of producing a single component in one cycle was designed and fabricated in-house to estimate the heat flux transients at the polymer/mold interface. The mold used for solidification of the polymer was made from  tool steel (P20) with a simple rectangular cavity. The mold was instrumented with thermocouples across the thickness to record its thermal history during injection molding. The polymer/mold interfacial heat flux transients were estimated by solving an inverse heat conduction problem (IHCP). The temperature measured at locations beneath the cavity surface inside the mold was used as an input to the inverse solver. Altering the melt injection and mold temperatures showed negligible effects on heat flux transients at the polymer/mold interface. The estimated solidification time for the polymer sample was about 2 s.

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References

  1. Baruffi F, Charalambis A, Calaon M, Elsborg R, and Tosello G, Procedia CIRP 75 (2018) 149.

    Article  Google Scholar 

  2. Liu Y, Heat transfer process between polymer and cavity wall during injection molding, Doctoral Dissertation, Dept. Mech. Eng., Chemnitz University of Technology, Chemnitz, Germany (2014).

  3. Bai Y, Yin B, Fu X R, and Yang M G, J App Polym Sci 102 (2006) 2249.

    Article  CAS  Google Scholar 

  4. Sridhar L, and Narh K A, Simulation 73 (3), (1999) 144.

    Article  Google Scholar 

  5. Park E M, and Kim S K, Trans Korean Soc Mech Eng B 43 (3), (2019) 201.

    Article  Google Scholar 

  6. Yu C J, Sunderland J E, and Poli C, Polym Eng Sci 30 (24), (1990) 1599.

    Article  CAS  Google Scholar 

  7. Delaunay D, Le Bot P, Fulchiron R, Luye J F, and Regnier G, Polym Eng Sci 40 (7), (2000) 1682.

    Article  CAS  Google Scholar 

  8. Massé H, Arquis É, Delaunay D, Quilliet S, and Le Bot P H, Int J Heat Mass Transf 47 (2004) 2015.

    Article  Google Scholar 

  9. Liu Y, and Gehde M, Int J Adv Manuf Techno. 84 (2015) 1325.

    Google Scholar 

  10. Sridhar L, Sedlak B M, and Narh K A, J Manuf Sci Eng 122 (4), (2000) 698.

    Article  Google Scholar 

  11. Babenko M, Sweeney J, Petkov P, Lacan F, Bigot S, and Whiteside B, Appl Therm Eng 130 (2018) 865.

    Article  CAS  Google Scholar 

  12. Griffiths W D, and Kayikci R, J Mater Sci 42 (11), (2007) 4036.

    Article  CAS  Google Scholar 

  13. Somé S C, Delaunay D, Faraj J, Bailleul J L, Boyard N, and Quilliet S, Appl Therm Eng 84 (June), (2015) 150.

    Article  Google Scholar 

  14. Chen S C, Chang Y, Chang Y P, Chen Y C, and Tseng C Y, Int Commun Heat Mass Transf 36 (10), (2009) 1030.

    Article  CAS  Google Scholar 

  15. Bendada A, Derdouri A, Lamontagne M, and Simard Y, Appl Therm Eng 24 (2004) 2029.

    Article  CAS  Google Scholar 

  16. Wang Q, Zhen M, Wu Z, and Cai Y, Effect of Process Parameters on Cavity Pressure in Injection Molding, in 32nd International Conference PPS, AIP, Lyon, France (2017).

    Google Scholar 

  17. Zhu L Y, Wu W Q, Jiang L, and Jiang B Y, Int Polym Proc 34 (1), (2019) 2.

    Article  CAS  Google Scholar 

  18. Heinle M, and Drummer D, Int Polym Proc 30 (2015) 434.

    Article  CAS  Google Scholar 

  19. Kamala Nathan D, and Narayan Prabhu K, Trans Indian Inst Met 75 (2), (2022) 307.

    Article  Google Scholar 

  20. Pye R G W, Injection Mold Design, 4th ed., East-West Press Pvt Ltd, New Delhi, India (1989).

    Google Scholar 

  21. Beck J V, Int J Heat Mass Transf 13 (4), (1970) 703.

    Article  Google Scholar 

  22. Narayan Prabhu K, and Ashish A A, Mater Manuf Proc 17 (4), (2002) 469.

    Article  Google Scholar 

  23. Krishnan M, and Sharma D G R, Int Commun Heat Mass Transf 23 (2), (1996) 203.

    Article  CAS  Google Scholar 

  24. Faiz J M, Shayfull Z, Nasir S M, Fathullah M, and Rashidi M, Optimisation of process parameters on thin shell part using response surface methodology (RSM). AIP conf. Proceedings 1885 (2017) 020071.

    Article  Google Scholar 

  25. Olam M, Advances and challenges in Microplastics, Environmental Sciences, IntechOpen (2023).

  26. Mancini S D, and Zanin M, Mater Res 2 (1), (1999) 33.

    Article  CAS  Google Scholar 

  27. Kong Y, and Hay J N, Eur Polym J 39 (8), (2003) 1721.

    Article  CAS  Google Scholar 

Download references

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Authors and Affiliations

  1. Department of Metallurgical and Materials Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, 575025, India

    D. Kamala Nathan & K. Narayan Prabhu

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  1. D. Kamala Nathan
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  2. K. Narayan Prabhu
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Correspondence to K. Narayan Prabhu.

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Nathan, D.K., Prabhu, K.N. Heat Transfer During Solidification of Polyethylene Terephthalate (PET) in Injection Molding. Trans Indian Inst Met (2024). https://doi.org/10.1007/s12666-023-03209-4

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