Abstract
A new method is employed to directly predict the development of yield stress distributions in injection molded products of glassy polymers. The approach is based on the results of a study on the temperature dependence of the evolution of yield stress during annealing of polycarbonate below Tg. In combination with the process-related thermal history, derived from numerical simulations of the injection molding process, an estimate of the yield stress distribution throughout a product can be obtained. Computed yield stresses of injection molded plates prove to be in excellent agreement with the experimental values, including their dependence on mold temperature and plate thickness.
References
1 Niklas, H., Kausch von Schmeling, H. H.: Kunststoffe, 53, p. 886, (1963).Search in Google Scholar
2 Ender, D. H., Andrews, R. D.: J. Appl. Phys.36, p. 3057 (1965).10.1063/1.1702927Search in Google Scholar
3 Ogorkiewicz, R. M., Sayigh, A. A. M.: Brit. Plast.7, p. 126 (1967).Search in Google Scholar
4 Gotham, K. V.: Plast. Polym.40, p. 59 (1972).10.1177/002743217205900401Search in Google Scholar
5 Matz, D. J., Guldemond, W. G., Cooper, S. L.: J. Polym. Sci. Polym. Phys. Ed.10, p. 1917 (1972).10.1002/pol.1972.180101004Search in Google Scholar
6 Narisawa, I., Ishikawa, M., Ogawa, H.: J. Polym. Sci., Polym. Phys. Ed.16, p. 1459 (1978).10.1002/pol.1978.180160811Search in Google Scholar
7 Boyce, M. C., Parks, D. M., Argon, A. S.: Mech. Mater.7(1), p. 15 (1988).10.1016/0167-6636(88)90003-8Search in Google Scholar
8 Arruda, E. M., Boyce, M. C.: Int. J. Plast.9(6), p. 697 (1993).10.1016/0749-6419(93)90034-NSearch in Google Scholar
9 Hasan, O. A., Boyce, M. C., Li, X. S., Berko, S.: J. Polym. Sci. Part B Polym. Phys.31(2), p. 185 (1993).10.1002/polb.1993.090310207Search in Google Scholar
10 Buckley, C. P., Jones, D. C.: Polymer36(17), p. 3301 (1995).10.1016/0032-3861(95)99429-XSearch in Google Scholar
11 Buckley, C. P., Dooling, P. J., Harding, J., Ruiz, C.: J. Mech. Phys. Solids52(10), p. 2355 (2004).10.1016/j.jmps.2004.04.001Search in Google Scholar
12 Wu, J. J., Buckley, C. P.: J. Polym. Sci. Part B Polym. Phys.42(11), p. 2027 (2004).10.1002/polb.20089Search in Google Scholar
13 Tervoort, T. A., Klompen, E. T. J., Govaert, L. E.: J. Rheology40, p. 779 (1996).10.1122/1.550755Search in Google Scholar
14 Govaert, L. E., Timmermans, P. H. M., Brekelmans, W. A. M.: J. Eng. Mat. Tech.122, p. 177 (2000).10.1115/1.482784Search in Google Scholar
15 Klompen, E. T. J., Engels, T. A. P., Govaert, L. E., Meijer, H. E. H.: Macromolecules submitted. Klompen, E. T. J.: PhD-Thesis, (download at: http://www.mate.tue.nl/mate/pdfs/4944.pdf) Eindhoven University of Technology, Eindhoven, The Netherlands, Chapter 5, (2005).Search in Google Scholar
16 Boyce, M. C., Arruda, E. M.: Polym. Eng. Sci.30(20), p. 1288 (1990).10.1002/pen.760302005Search in Google Scholar
17 Boyce, M. C., Arruda, E. M., Jayachandran, R.: Polym. Eng. Sci.34(9), p. 716 (1994).10.1002/pen.760340904Search in Google Scholar
18 Wu, P. D., van der Giessen, E.: Int. J. Plast.11, p. 211 (1995).10.1016/0749-6419(94)00043-3Search in Google Scholar
19 van Melick, H. G. H., Bressers, O. F. J. T., den Toonder, J. M. J., Govaert, L. E., Meijer, H. E. H.: Polymer44, p. 2481 (2003).10.1016/S0032-3861(03)00110-1Search in Google Scholar
20 van Melick, H. G. H., Govaert, L. E., Meijer, H. E. H.: Polymer44, p. 457 (2003).10.1016/S0032-3861(02)00770-XSearch in Google Scholar
21 Meijer, H. E. H., Govaert, L. E.: Macromol. Chem. Phys.204, p. 274 (2003).10.1002/macp.200290080Search in Google Scholar
22 Govaert, L. E., Klompen, E. T. J., Meijer, H. E. H.: Proceedings of the 12th international Conference of Deformation Yield and Fracture of Polymers, Institute of Materials, p. 21 (2003).Search in Google Scholar
23 Klompen, E. T. J., Engels, T. A. P., van Breemen, L. C. A., SchreursP. J. G., Govaert, L. E., Meijer, H. E. H.: Macromolecules submitted. See also: Klompen, E. T. J.: PhD-Thesis, (download at: http://www.mate.tue.nl/mate/pdfs/4944.pdf) Eindhoven University of Technology, Eindhoven, The Netherlands, Chapter 6, p. 107 (2005).Search in Google Scholar
24 G'Sell, C., Hiver, J. M., Dahoun, A., Souahi, A.: J. Mater. Sci.27(18), p. 5031 (1992).10.1007/BF01105270Search in Google Scholar
25 Haward, R. N., Thackray, G.: Proc. Royal Soc. London A, 302(1471), p. 453 (1967).10.1098/rspa.1968.0029Search in Google Scholar
26 Haward, R. N.: J. Polym. Sci. Part B: Polym. Phys.33(10), p. 1481 (1995).10.1002/polb.1995.090331005Search in Google Scholar
27 Tervoort, T. A., Govaert, L. E.: J. Rheol.44(6), p. 1263 (2000).10.1122/1.1319175Search in Google Scholar
28 van Melick, H. G. H., Govaert, L. E., Meijer, H. E. H.: Polymer44, p. 2493 (2003).10.1016/S0032-3861(03)00112-5Search in Google Scholar
29 Tervoort, T. A., Smit, R. J. M., Brekelmans, W. A. M., Govaert, L. E.: Mech. Time-Depend. Mater.1(3), p. 269 (1998).10.1023/A:1009720708029Search in Google Scholar
30 Baaijens, F. P. T.: Rheol. Acta30, p. 284 (1991).10.1007/BF00366642Search in Google Scholar
31 Golden, J. H., Hammant, B. L., Hazell, E. A.: J. Appl. Polym. Sci.11(8), p. 1571 (1967).10.1002/app.1967.070110818Search in Google Scholar
32 Bauwens-Crowet, C., Bauwens, J. C.: Polymer23(11), p. 1599 (1982).10.1016/0032-3861(82)90178-1Search in Google Scholar
33 McKenna, G. B., in: Comprehensive Polymer Science, Vol. 2: Polymer Properties, Booth, C., Price, C. (Eds.), Pergamon Press, Oxford (1989).Search in Google Scholar
34 Hutchinson, J. M.: Progress in Polymer Science20(4), p. 703 (1995).10.1016/0079-6700(94)00001-ISearch in Google Scholar
35 Govaert, L. E., Tervoort, T. A.: J. Pol. Sci. Part B, Pol. Phys.42(11), p. 2041 (2004).10.1002/polb.20095Search in Google Scholar
36 Schrauwen, B. A. G., van Breemen, L. C. A., Spoelstra, A. B., Peters, G. W. M., Govaert, L. E., Meijer, H. E. H.: Macromolecules37(23), p. 8618 (2004).10.1021/ma048884kSearch in Google Scholar
37 van Dommelen, J. A. W., Schrauwen, B. A. G., van Breemen, L. C. A, Govaert, L. E.: J. Polym. Sci. Part B, Polym. Phys.42(16), p. 2983 (2004).10.1002/polb.20164Search in Google Scholar
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