PPESK-Modified Multi-Functional Epoxy Resin and Its Application to the Pultrusion of Carbon Fiber
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Liaoning High Performance Resin Engineering Research Center, Department of Polymer Science and Materials, Dalian University of Technology, Dalian 116024, China
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PetroChina Co., Ltd., Jilin Petrochemical Branch, Jilin 132022, China
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Authors to whom correspondence should be addressed.
Polymers 2018, 10(10), 1067; https://doi.org/10.3390/polym10101067
Received: 24 July 2018
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Revised: 21 September 2018
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Accepted: 23 September 2018
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Published: 26 September 2018
(This article belongs to the Special Issue Multi-functional Polymer Composites and Structures)
Multi-functional epoxy resins are generally brittle due to their high crosslinking densities, which can limit their use for applications that require impact resistance. Pultruded poly(phthalazinone ether sulfone ketone) (PPESK)-modified epoxy resins were prepared and their curing behaviors, heat resistance properties, and viscosity changes investigated. The glass transition temperature of these resins was found to increase with increasing PPESK content; however, these values were still compatible with the pultrusion process. Little change in the tensile strength and elongation lengths at breaking point were observed for blended PPESK/multi-functional epoxy resin containing 4–6% PPESK, and its viscosity levels were still within the requirements of the pultrusion process. Carbon fiber/multi-functional epoxy resin/PPESK (CF/E/PPESK) composites were also prepared and their performance investigated. The bending radius of these PPSEK-modified composites could reach up to 55 D with no cracking or peeling observed in their surface layers. The fatigue frequency of the sinusoidal waveforms for the composite did not change after one million fatigue test cycles, meaning that a strength retention rate of >90% was achieved. Therefore, this study describes a powerful approach for preparing toughened multi-functional epoxy resins that are well suited to pultrusion processes.
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Keywords:
carbon fiber; multi-functional epoxy resin; polyethersulfone resin; pultrusion process; curing
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MDPI and ACS Style
Wang, L.; Wang, J.; Zhang, F.; Qi, Y.; Weng, Z.; Jian, X. PPESK-Modified Multi-Functional Epoxy Resin and Its Application to the Pultrusion of Carbon Fiber. Polymers 2018, 10, 1067. https://doi.org/10.3390/polym10101067
AMA Style
Wang L, Wang J, Zhang F, Qi Y, Weng Z, Jian X. PPESK-Modified Multi-Functional Epoxy Resin and Its Application to the Pultrusion of Carbon Fiber. Polymers. 2018; 10(10):1067. https://doi.org/10.3390/polym10101067
Chicago/Turabian StyleWang, Liwei, Jinyan Wang, Fengfeng Zhang, Yu Qi, Zhihuan Weng, and Xigao Jian. 2018. "PPESK-Modified Multi-Functional Epoxy Resin and Its Application to the Pultrusion of Carbon Fiber" Polymers 10, no. 10: 1067. https://doi.org/10.3390/polym10101067
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