Shrinkage and Warpage Minimization of Glass-Fiber-Reinforced Polyamide 6 Parts by Microcellular Foam Injection Molding
Department of Mechanical Engineering, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
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Polymers 2020, 12(4), 889; https://doi.org/10.3390/polym12040889
Received: 30 March 2020
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Accepted: 9 April 2020
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Published: 11 April 2020
(This article belongs to the Special Issue Advances on Injection Molding of Polymers)
Shrinkage and warpage of injection-molded parts can be minimized by applying microcellular foaming technology to the injection molding process. However, unlike the conventional injection molding process, the optimal conditions of the microcellular foam injection molding process are elusive because of core differences such as gas injection. Therefore, this study aims to derive process conditions to minimize the shrinkage and warpage of microcellular foam injection-molded parts made of glass fiber reinforced polyamide 6 (PA6/GF). Process factors and levels were first determined, with experiments planned accordingly. We simulated designed experiments using injection molding analysis software, and the results were analyzed using the Taguchi method, analysis of variance (ANOVA), and response surface methodology (RSM), with the ANOVA analysis being ultimately demonstrating the influence of the factors. We derived and verified the optimal combination of process factors and levels for minimizing both shrinkage and warpage using the Taguchi method and RSM. In addition, the mechanical properties and cell morphology of PA6/GF, which change with microcellular foam injection molding, were confirmed.
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MDPI and ACS Style
Ryu, Y.; Sohn, J.S.; Yun, C.-S.; Cha, S.W. Shrinkage and Warpage Minimization of Glass-Fiber-Reinforced Polyamide 6 Parts by Microcellular Foam Injection Molding. Polymers 2020, 12, 889. https://doi.org/10.3390/polym12040889
AMA Style
Ryu Y, Sohn JS, Yun C-S, Cha SW. Shrinkage and Warpage Minimization of Glass-Fiber-Reinforced Polyamide 6 Parts by Microcellular Foam Injection Molding. Polymers. 2020; 12(4):889. https://doi.org/10.3390/polym12040889
Chicago/Turabian StyleRyu, Youngjae, Joo S. Sohn, Chang-Seok Yun, and Sung W. Cha. 2020. "Shrinkage and Warpage Minimization of Glass-Fiber-Reinforced Polyamide 6 Parts by Microcellular Foam Injection Molding" Polymers 12, no. 4: 889. https://doi.org/10.3390/polym12040889
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