AUTHORS: Adam Skrobak, Martin Reznicek, Martin Ovsik, Vaclav Janostik
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ABSTRACT: In industry the control of physical properties of rubber products produced by injection molding is mostly performed on testing samples produced by another method - cutting out of a compression molded plate according to ISO standard. This different method of producing testing samples and final products may have a different impact on physical properties. The paper compares and evaluates the selected physical properties (tensile strength, modulus of elasticity and tear strength) of EPDM rubber samples prepared by the standard method (cutting out of a compression molded plate) and injection molded samples and finally third method - cutting out of an injection molded plate. The results have shown that using the injection molded samples we will achieve more objective results mainly to determine the tear strength. In the case of tensile strength, the differences are not so significant.
KEYWORDS: Injection Molding, Compression Molding, Physical, Tensile, Tear, Properties, Rubber, Samples
REFERENCES:
[1] Fasching, M., Friesenbichler, W., & Berger, G.
R., Change of processing behavior of rubbers in
injection molding caused by material storage,
AIP Conference Proceedings, 1779, 080013,
2016, 10.1063/1.49655557
[2] J. S. Dick, How to Improve Rubber
Compounds, pp. 290, Hanser, 2014.
[3] J. A. Lindsay, Practical Guide to Rubber
Injection Molding, pp. 26, Smithers Rapra,
2014
[4] K. Kyas, M. Stanek, Manas, M. Stanek, M.
Krumal, Z. Holik, “Simulation of ruber
injection molding process“, 2011, Chemicke
listy, Volume 105, Issue 15, pp. S354-S356
[5] Arrillaga, A., Zaldua, A. M., & Farid, A. S.
(2012). Evaluation of injection-molding
simulation tools to model the cure kinetics of
rubbers. Journal of Applied Polymer Science,
123(3), 1437-1454.
[6] Ramorino, G., Girardi, M., Agnelli, S.,
Franceschini, A., Baldi, F., Viganò, F., &
Riccò, T. (2010). Injection molding of
engineering rubber components: A comparison
between experimental results and numerical
simulation. International Journal of Material
Forming, 3(SUPPL. 1), 551-554.