The manufacturing issues of technical products made of polyimide – carbon fibers composite by means injection moulding process

Nowadays modern commercial simulation software provides acceptably faithful representation of reality, assuming the correctness of boundary conditions and reliability of data of processed composite material. In the case of non-standard plastics which include polyimide, we do not always have access to the target material and we do not have proper equipment to produce such products. Due to very interesting properties of the polyimide and its low popularity in use as an injection moulding material, the analysis of injection moulding of tooth plastic gear made from carbon fiber-polyimide composite was made. In this work the chosen material data, necessary for the numerical analysis, were presented. The impact analysis of main factors controlling the volumetric shrinkage during injection moulding processing was conducted. It was found that the greatest impact on the quality criterion is the melt temperature. To optimize control factors, the Taguchi orthogonal plans were used. In addition, the issue of polyimide properties, the possibility of its injection moulding and applications was discussed.

Full text (pdf)

1. Berins M.L.: Plastics Engineering Handbook of the Society of the Plastics Industry, 5th ed., Chapman and Hall, New York 1991.

2. Brydson J.A.: Plastics Materials, 6th ed., Butterworth-Heinemann, Oxford 1995.

3. Budzik G., Bernaczek J., Kozik B., Sobolewski B., Sobolak M., Oleksy M., Grzelka M., Dobrowolska A.: Advanced integrated cad/rp systems in manufacturing process of planetary gear demonstrator, Acta Technica Corviniensis-Bulletin of Engineering, 6 (2013) 95.

4. Chanda M., Roy S. K.: Plastics Technology Handbook, CRC Press, Boca Raton 2007.

5. Gajdoš I., Duleba B., Spišák E., Greškovič F., Dulebová L.: Optimization of injection molding process by DOE, Hutnik - Wiadomosci Hutnicze, 81 (2014) 470- 475.

6. Harper C.A.: Handbook of Plastics Technologies: The Complete Guide to Properties and Performance, McGraw-Hill, New York 2006.

7. Harper C. A., Petrie, E. M.: Plastics Materials and Processes: A Concise Encyclopedia, Wiley, Berlin 2003.

8. Kowalska B., Sikora R.: The effect of cooling time of the injection moldings on the therodynamic equation of state, Polimery, 48 (2003) 359-364.

9. Kroschwitz, J.I.: Concise Encyclopedia of Polymer Science and Engineering, John Wiley and Sons, New York 1990.

10. Kutz M.: Applied Plastics Engineering Handbook, William Andrew, 2011.

11. Kwiatkowski D., Gnatowski A., & Nabiałek J.: Numerical analysis of residual stress and deformation of injection moulded parts manufactured from polymeric composite with different processing conditions. Kompozyty, 11 (2011) 294-298.

12. Marciniec A., Budzik G., Sobolewski B., Grzelka M., Wieczorkowski M.: Ocena dokładności prototypów stożkowych kół zębatych z zastosowaniem CMM, Czasopismo Techniczne. Mechanika, 107 (2010) 73-80.

13. AURUM® JCL3030 Thermoplastic Polyimide - Product data.

14. AURUM® JCL3030 Thermoplastic Polyimide - Product data.

15. Pötsch G., Michaeli W., Injection Molding. An Introduction, Carl Hanser Verlag, Munich 2008.

16. Wilczyński K., Reologia w przetwórstwie tworzyw sztucznych, WNT, Warszawa 2001.

17. Yang H., Liu J., Ji M., Yang S.: Novel thermoplastic polyimide composite materials, INTECH open science 2012, pp. 1-11.