Effect of gas counter pressure on the carbon fiber orientation and the associated electrical conductivities in injection molded polymer composites
-
Shia-Chung Chen
and
Ming-Chung Lin
Abstract
Polymers filled with conducting fibers to provide electrical conductivity performance have received great attention due to the requirements of many engineering applications. In the present article, injection molding of acrylonitrile butadiene styrene (ABS)/carbon-fiber composites using applied gas counter pressure (GCP) was conducted and the overall fiber orientation and associated through-plane electrical conductivity (TPEC) of each layer (core, shear and skin layers) and various locations (far gate, center and near gate) were characterized. Results show that GCP had significant effects on the fiber orientation and skin layer thickness, resulting in decreases in the fiber orientation level (FOL) value in all locations and TPEC increases with increasing GCP in the core region of the molded composites (improvement of 62% when 100 bar GCP was applied). However, the effect of increased skin layer thickness in reducing TPEC was stronger than the effect of decreased FOL in raising TPEC when GCP was applied. This resulted in the overall TPEC falling slightly with increasing GCP. The results also show that the electrical conductivity followed the sequence of far gate>center>near gate and the FOL followed the order of core layer<shear layer<skin layer. The results obtained in this investigation reveal the potential application of GCP technology associated with mold temperature control in injection molding to manufacture products with enhanced electrical conductivity in the future.
Acknowledgments
This research was supported by The Center-of-Excellence Program on Membrane Technology of the Ministry of Education and the project of the specific research fields in the CYCU, Taiwan.
References
[1] Wong KH, Pickering SJ, Rudd CD. Compos: Part A Appl. Sci. Manuf. 2010, 41, 693–702.10.1016/j.compositesa.2010.01.012Search in Google Scholar
[2] Ameli A, Jung PU, Park CB. Comp. Sci. Technol. 2013, 76, 37–44.10.1016/j.compscitech.2012.12.008Search in Google Scholar
[3] Tchoudakov R, Breuer O, Narkis M, Siegma A. Polym. Eng. Sci. 1996, 36, 1336–1346.10.1002/pen.10528Search in Google Scholar
[4] Chen D, Yang J, Chen G. Compos: Part A Appl. Sci. Manuf. 2010, 41, 1636–1638.10.1016/j.compositesa.2010.07.013Search in Google Scholar
[5] Chang H, Kao MJ, Huang KD, Kuo CG, Huang SY. J. Nanosci. Nanotechnol. 2011, 11, 1754–1757.10.1166/jnn.2011.3358Search in Google Scholar
[6] Chen CS, Chen WR, Chen SC, Chien RD. Int. Commun. Heat Mass Transfer 2008, 35, 744–749.10.1016/j.icheatmasstransfer.2008.02.006Search in Google Scholar
[7] Alig I, Skipa T, Lellinger D, Potschke P. Polymer 2008, 49, 3524–3532.10.1016/j.polymer.2008.05.037Search in Google Scholar
[8] Arjmand M, Apperley T, Okoniewski M, Sundararaj UT. Carbon 2012, 50, 5126–5134.10.1016/j.carbon.2012.06.053Search in Google Scholar
[9] O’Connell M, Carbon Nanotubes: Properties and Applications, Taylor & Francis: Boca Raton, 2006.Search in Google Scholar
[10] Gurland J. Trans. Metall. Soc. AIME 1966, 236, 642–646.10.2307/2688169Search in Google Scholar
[11] Kortschot MT, Woodhams RT. Polym. Compos. 1988, 9, 60–71.10.1002/pc.750090109Search in Google Scholar
[12] Davenport DE. Polym. News 1982, 8, 134–137.Search in Google Scholar
[13] Heinzel A, Mahlendorf F, Niemzig O, Kreuz C. J. Power Sources 2004, 131, 35–40.10.1016/j.jpowsour.2004.01.014Search in Google Scholar
[14] Blunk RHJ, Lisi DJ, Yoo YE, Tucker III CL. AIChE J. 2003, 49, 18–29.10.1002/aic.690490104Search in Google Scholar
[15] Luo XC, Chung DDL. Compos. Part B-Eng. 1999, 30, 227–231.10.1016/S1359-8368(98)00065-1Search in Google Scholar
[16] Chen SC, Shih MY, Lee PH, Huang JS. SPE ANTEC Tech. Papers 2009, 66, 745–748.Search in Google Scholar
[17] Bledzki AK, Trans Tech Publication, Zurich, Switzerland, 2005, pp. 257–260.Search in Google Scholar
[18] Yoon JD, Hing SK, Kim JH, Cha SW. Cell. Polym. 2004, 23, 39–47.10.1177/026248930402300103Search in Google Scholar
[19] Chen SC, Liao WH, Chien RD. Int. Commun. Heat Mass Transfer 2013, 39, 1125–1131.10.1016/j.icheatmasstransfer.2012.06.015Search in Google Scholar
[20] Xu JY. Microcellular Injection Molding, John Wiley & Sons: 2011.10.1002/9780470642818Search in Google Scholar
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Articles in the same Issue
- Frontmatter
- Original articles
- Physico-mechanical characterization and biodegradability behavior of polypropylene/poly(L-lactide) polymer blends
- Tensile properties of polyformaldehyde blends and nanocomposites
- Interaction simulation and experimental physico-mechanical analysis of distinct polarity blends of polyethylene and polyvinyl alcohol
- Thermal degradation of high-density polyethylene/soya spent powder blends
- Combination of montmorillonite and a Schiff-base polyphosphate ester to improve the flame retardancy of ethylene-vinyl acetate copolymer
- Effects of initial crystallization process on piezoelectricity of PVDF-HFP films
- Characteristics of natural leather finished with some ecofriendly mixtures of polymeric aqueous dispersions
- Dye wastewater treatment by direct contact membrane distillation using polyvinylidene fluoride hollow fiber membranes
- The effect of pressure variations on the formation of gas inclusions in the rotational molding process
- Numerical study of filling strategies in vacuum assisted resin transfer molding process
- Effect of gas counter pressure on the carbon fiber orientation and the associated electrical conductivities in injection molded polymer composites
Articles in the same Issue
- Frontmatter
- Original articles
- Physico-mechanical characterization and biodegradability behavior of polypropylene/poly(L-lactide) polymer blends
- Tensile properties of polyformaldehyde blends and nanocomposites
- Interaction simulation and experimental physico-mechanical analysis of distinct polarity blends of polyethylene and polyvinyl alcohol
- Thermal degradation of high-density polyethylene/soya spent powder blends
- Combination of montmorillonite and a Schiff-base polyphosphate ester to improve the flame retardancy of ethylene-vinyl acetate copolymer
- Effects of initial crystallization process on piezoelectricity of PVDF-HFP films
- Characteristics of natural leather finished with some ecofriendly mixtures of polymeric aqueous dispersions
- Dye wastewater treatment by direct contact membrane distillation using polyvinylidene fluoride hollow fiber membranes
- The effect of pressure variations on the formation of gas inclusions in the rotational molding process
- Numerical study of filling strategies in vacuum assisted resin transfer molding process
- Effect of gas counter pressure on the carbon fiber orientation and the associated electrical conductivities in injection molded polymer composites
