Micro-crack behavior of carbon fiber reinforced thermoplastic modified epoxy composites for cryogenic applications
Article
Article Title | Micro-crack behavior of carbon fiber reinforced thermoplastic modified epoxy composites for cryogenic applications |
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ERA Journal ID | 4883 |
Article Category | Article |
Authors | He, Yu-xin (Author), Li, Qi (Author), Kuila, Tapas (Author), Kim, Nam Hoon (Author), Jiang, Tongwu (Author), Lau, Kin-tak (Author) and Lee, Joong Hee (Author) |
Journal Title | Composites Part B: Engineering |
Journal Citation | 44 (1), pp. 533-539 |
Number of Pages | 7 |
Year | 2013 |
Publisher | Elsevier |
Place of Publication | Oxford, United Kingdom |
ISSN | 1359-8368 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.compositesb.2012.03.014 |
Web Address (URL) | http://www.sciencedirect.com/science/article/pii/S1359836812002119# |
Abstract | Three different types of thermoplastics, poly(ether imide) (PEI), polycarbonate (PC), and poly(butylene terephthalate) (PBT) were used to modify epoxy for cryogenic applications. Carbon fiber reinforced thermoplastic modified epoxy composites were also prepared through vacuum-assisted resin transfer molding (RTM). Dynamic mechanical analysis (DMA) shows that the storage moduli of PEI, PC, and PBT modified epoxies are 30%, 21%, and 17% higher than that of the neat epoxy respectively. The impact strength of the modified epoxies at cryogenic temperature increases with increasing thermoplastic content up to 1.5 wt.% and then decreases for further loading (2.0 wt.%). The coefficient of thermal expansion (CTE) values of the PBT, PEI, and PC modified epoxies also decreased by 17.76%, 25.42%, and 30.15%, respectively, as compared with that of the neat epoxy. Optical microscopy image analysis suggests that the presence of PEI and PC in the carbon fiber reinforced epoxy composites can prevent the formation of micro-cracks. Therefore, both the PEI and PC were very effective in preventing micro-crack formation in the composites during thermal cycles at cryogenic condition due to their low CTE values and high impact strength. |
Keywords | thermosetting resin; impact behavior; thermomechanical; micro-crack density |
ANZSRC Field of Research 2020 | 401609. Polymers and plastics |
401411. Packaging, storage and transportation (excl. food and agricultural products) | |
401706. Numerical modelling and mechanical characterisation | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Jeonbuk National University, Korea |
Centre of Excellence in Engineered Fibre Composites | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q1602/micro-crack-behavior-of-carbon-fiber-reinforced-thermoplastic-modified-epoxy-composites-for-cryogenic-applications
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