Cargando…

Shrinkage Optimization in Talc- and Glass-Fiber-Reinforced Polypropylene Composites

The shrinkage of reinforced polymer composites in injection molding varies, depending on the properties of the reinforcing agent. Therefore, the study of optimal reinforcement conditions, to minimize shrinkage when talc and glass fibers (GF) (which are commonly used as reinforcements) are incorporat...

Descripción completa

Detalles Bibliográficos
Autores principales: Ryu, Youngjae, Sohn, Joo Seong, Kweon, Byung Chul, Cha, Sung Woon
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6427219/
https://www.ncbi.nlm.nih.gov/pubmed/30845669
http://dx.doi.org/10.3390/ma12050764
_version_ 1783405161580855296
author Ryu, Youngjae
Sohn, Joo Seong
Kweon, Byung Chul
Cha, Sung Woon
author_facet Ryu, Youngjae
Sohn, Joo Seong
Kweon, Byung Chul
Cha, Sung Woon
author_sort Ryu, Youngjae
collection PubMed
description The shrinkage of reinforced polymer composites in injection molding varies, depending on the properties of the reinforcing agent. Therefore, the study of optimal reinforcement conditions, to minimize shrinkage when talc and glass fibers (GF) (which are commonly used as reinforcements) are incorporated into polypropylene (PP), is required. In this study, we investigated the effect of reinforcement factors, such as reinforcement type, reinforcement content, and reinforcement particle size, on the shrinkage, and optimized these factors to minimize the shrinkage of the PP composites. We measured the shrinkage of injection-molded samples, and, based on the measured values, the optimal conditions were obtained through analysis of variance (ANOVA), the Taguchi method, and regression analysis. It was found that reinforcement type had the largest influence on shrinkage among the three factors, followed by reinforcement content. In contrast, the reinforcement size was not significant, compared to the other two factors. If the reinforcement size was set as an uncontrollable factor, the optimum condition for minimizing directional shrinkage was the incorporation of 20 wt % GF and that for differential shrinkage was the incorporation of 20 wt % talc. In addition, a shrinkage prediction method was proposed, in which two reinforcing agents were incorporated into PP, for the optimization of various dependent variables. The results of this study are expected to provide answers about which reinforcement agent should be selected and incorporated to minimize the shrinkage of PP composites.
format Online
Article
Text
id pubmed-6427219
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-64272192019-04-15 Shrinkage Optimization in Talc- and Glass-Fiber-Reinforced Polypropylene Composites Ryu, Youngjae Sohn, Joo Seong Kweon, Byung Chul Cha, Sung Woon Materials (Basel) Article The shrinkage of reinforced polymer composites in injection molding varies, depending on the properties of the reinforcing agent. Therefore, the study of optimal reinforcement conditions, to minimize shrinkage when talc and glass fibers (GF) (which are commonly used as reinforcements) are incorporated into polypropylene (PP), is required. In this study, we investigated the effect of reinforcement factors, such as reinforcement type, reinforcement content, and reinforcement particle size, on the shrinkage, and optimized these factors to minimize the shrinkage of the PP composites. We measured the shrinkage of injection-molded samples, and, based on the measured values, the optimal conditions were obtained through analysis of variance (ANOVA), the Taguchi method, and regression analysis. It was found that reinforcement type had the largest influence on shrinkage among the three factors, followed by reinforcement content. In contrast, the reinforcement size was not significant, compared to the other two factors. If the reinforcement size was set as an uncontrollable factor, the optimum condition for minimizing directional shrinkage was the incorporation of 20 wt % GF and that for differential shrinkage was the incorporation of 20 wt % talc. In addition, a shrinkage prediction method was proposed, in which two reinforcing agents were incorporated into PP, for the optimization of various dependent variables. The results of this study are expected to provide answers about which reinforcement agent should be selected and incorporated to minimize the shrinkage of PP composites. MDPI 2019-03-06 /pmc/articles/PMC6427219/ /pubmed/30845669 http://dx.doi.org/10.3390/ma12050764 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ryu, Youngjae
Sohn, Joo Seong
Kweon, Byung Chul
Cha, Sung Woon
Shrinkage Optimization in Talc- and Glass-Fiber-Reinforced Polypropylene Composites
title Shrinkage Optimization in Talc- and Glass-Fiber-Reinforced Polypropylene Composites
title_full Shrinkage Optimization in Talc- and Glass-Fiber-Reinforced Polypropylene Composites
title_fullStr Shrinkage Optimization in Talc- and Glass-Fiber-Reinforced Polypropylene Composites
title_full_unstemmed Shrinkage Optimization in Talc- and Glass-Fiber-Reinforced Polypropylene Composites
title_short Shrinkage Optimization in Talc- and Glass-Fiber-Reinforced Polypropylene Composites
title_sort shrinkage optimization in talc- and glass-fiber-reinforced polypropylene composites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6427219/
https://www.ncbi.nlm.nih.gov/pubmed/30845669
http://dx.doi.org/10.3390/ma12050764
work_keys_str_mv AT ryuyoungjae shrinkageoptimizationintalcandglassfiberreinforcedpolypropylenecomposites
AT sohnjooseong shrinkageoptimizationintalcandglassfiberreinforcedpolypropylenecomposites
AT kweonbyungchul shrinkageoptimizationintalcandglassfiberreinforcedpolypropylenecomposites
AT chasungwoon shrinkageoptimizationintalcandglassfiberreinforcedpolypropylenecomposites