Influence of the method of heating/cooling moulds on the properties of injection moulding parts

• Autorzy: Postawa P. , Kwiatkowski D. , Bociaga E.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The main purpose of carry out research was estimate the influence thermal conditions of the mould on properties of injection moulded parts. Design/methodology/approach: The properties of structure and mechanical properties of injection moulding parts were determined by many factors. One of them is thermal conditions of tool. Injection mould can be heated or cooling during the process and its depend which kind of polymer we produced and what properties we going to obtain. A few different cooling mould systems were presented in the article and disadvantages and advantages of each of them. Findings: The impact of thermal condition (cooling rate, mould temperature) on the structure and physical properties of injection moulded parts were present. Research limitations/implications: Research was limited to a few thermoplastics polymers. Practical implications: Received and presented results are useful from the point of the view of industrial applications and they are able to contribute to improvement parts obtained using injection moulding technology. Originality/value: Very original microscopic research carry out during cooling stage of polymer and crystallization process.

Słowa kluczowe

EN

engineering polymers; crystallinity; working properties

PL

tworzywo konstrukcyjne; krystaliczność; własności eksploatacyjne

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2008
• Tom: Vol. 31, nr 2
• Strony: 121--124
• Opis fizyczny: Bibliogr. 24 poz.

Twórcy

autor

Postawa P.

autor

Kwiatkowski D.

autor

Bociaga E.

• Institute of Polymer Processing and Production Management, Czestochowa University of Technology, al. Armii Krajowej 19c, 42-200 Częstochowa, Poland,

Bibliografia

• [1] R.A. Harris, H.A. Newlyn, R.J. Hague, P.M. Dickens, Part shrinkage anomilies from stereolithography injection mould tooling, International Journal of Machine Tools and Manufacture 43 (2003) 879-887.
• [2] J. Koszkul, P. Postawa, Crystalinty degree change for mouldings and its influence on quality at extreme parameters of injection, Proceedings of the 12th Scientific International Conference "Achievements in Mechanical and Materials Engineering" AMME'2003, Gliwice-Zakopane, 2003, 509-512.
• [3] S.H. Tang, Y.M. Kong, S.M. Sapuan, R. Samin, S. Sulaiman, Design and thermal analysis of plastic injection mould, Journal of Materials Processing Technology 171 (2006) 259-267.
• [4] P. Postawa, J. Koszkul, Influence of processing conditions on changing of shrinkage and mass POM injection molding parts, Proceedings of the 13th Scientific International Conference "Achievements in Mechanical and Materials Engineering" AMME'2005, Gliwice-Zakopane, 2003, 531-534.
• [5] B. Nardin, B. Zagar, A. Glojek, D. Krizaj, Adaptive system for electrically driven thermoregulation of moulds for injection moulding, Journal of Materials Processing Technology 187-188 (2007) 690-693.
• [6] P. Postawa, M. Pietrzak, Assuring the assigned temperature of the injection mould with the exploitation of conformal cooling channels, Proceedings of the 7th International Conference "Advances in Plastic Technology" APT'07, Katowice, 2007, 6-11.
• [7] J.X. Li, W.L. Cheung, Effect of mould temperature on the formation of α/β polypropylene blends in injection moulding, Journal of Materials Processing Technology 63 (1997) 472-475.
• [8] D. Kwiatkowski, J. Nabiałek, P. Postawa, Influence of injection moulding parameters on resistance for cracking on example of PP, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 97-100.
• [9] R.A. Harris, R.J.M. Hague, P.M. Dickens, The structure of parts produced by stereolithography injection mould tools and the effect on part shrinkage, International Journal of Machine Tools and Manufacture 44 (2004) 59-64.
• [10] J.C. Ferreira, A. Mateus, Studies of rapid soft tooling with conformal cooling channels for plastic injection moulding, Journal of Materials Processing Technology 142 (2003) 508-516.
• [11] M. Van Stappen, K. Vandierendonck, C. Mol, E. Beeckman, E. De Clercq, Practice vs. laboratory tests for plastic injection moulding, Surface and Coatings Technology 142-144 (2001) 143-145.
• [12] N. Santos, A.M. Agnelli, J. Mummery, P. Wallwork, Effect of recycling on the thermal properties of polymers, Polymer Testing 26 (2007) 216-221.
• [13] E. Bociąga, T. Jaruga, Experimental investigation of polymer flow in injection mould, Archives of Materials Science and Engineering 28/3 (2007) 165-172.
• [14] D.E. Dimla, M. Camilotto, F. Miani, Design and optimisation of conformal cooling channels in injection moulding tools, Journal of Materials Processing Technology 164-165 (2005) 1294-1300.
• [15] E. Bociąga, T. Jaruga, Structure and crystallinity investigation of injection moulded parts from a multicavity mould, Proceedings of the 9th International Conference "Material Forming" ESAFORM, Glasgow, 2006, 659-662.
• [16] J.N. Ness, J.Z. Liang, The calculation of cooling time in injection moulding, Journal of Materials Processing Technology 57 (1996) 62-64.
• [17] Y.H. Song, K.F. Zhang, Z.R. Wang, F.X. Diao, 3-D FEM analysis of the temperature field and the thermal stress for plastics thermalforming, Journal of Materials Processing Technology 97 (2000) 35-43.
• [18] T. Barriere, J.C. Gelin, B. Liu, Improving mould design and injection parameters in metal injection moulding by accurate 3D finite element simulation, Journal of Materials Processing Technology 125-126 (2002) 518-524.
• [19] E. Bociąga, T. Jaruga, Dynamic mechanical properties of parts from multicavity injection mould, Journal of Achievements in Materials and Manufacturing Engineering 23/2 (2007) 83-86.
• [20] S.H. Tang, Y.J. Tan, S.M. Sapuan, S. Sulaiman, N. Ismail, R. Samin, The use of Taguchi method in the design of plastic injection mould for reducing warpage, Journal of Materials Processing Technology 182 (2007) 418-426.
• [21] K.M.B. Jansen, Heat transfer in injection moulding systems with insulation layers and heating elements, International Journal of Heat and Mass Transfer 38 (1995) 309-316.
• [22] A.G. Smith, L.C. Wrobel, P.S. Allan, P.R. Hornsby, A computational model for the cooling phase of injection moulding, Journal of Materials Processing Technology 195 (2008) 305-313.
• [23] Z. Shuhua, F. Shibi, High ionic conductivity of all-solid polymer electrolytes based on polyorganophosphazenes, European Polymer Journal 43 (2007) 3695-3700.
• [24] P. Postawa, J. Koszkul, Change in injection moulded parts shrinkage and weight as a function of processing conditions, Journal of Materials Processing Technology 162-163 (2005) 109-115.