Synthesis and characterization of ethylenediamine-modified F-44 phenolic epoxy fiber
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Juan Wu
,
Hao Wang
Abstract
F-44 phenolic epoxy fibers were produced through high-temperature dry spinning utilizing F-44 phenolic epoxy resin as the base material, combined with n-butanol and ethylenediamine (EDA) as the curing agent. The fibers were subsequently analyzed for their structural, thermal stability, microstructural, and mechanical properties using techniques such as Fourier transform infrared spectroscopy, micro-infrared imaging, thermogravimetric analysis, nuclear magnetic resonance, scanning electron microscopy, and fiber strength testing. The limitations of phenolic resins, including high brittleness, poor toughness, and low elongation at break, restrict their potential applications, necessitating modifications to broaden their utility. Research findings indicate that modifying EDA induces a ring-opening reaction of epoxy groups, thereby enhancing the resin’s structure and improving the thermal stability and mechanical properties of fibers. The thermal stability and mechanical strength of the fibers were optimized at an EDA concentration of 2.0 wt% and curing time of 30 min, resulting in a tensile strength of 105 MPa and an elongation at break of 27.6 %.
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Research ethics: Not applicable.
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Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Competing interests: The authors state no conflict of interest.
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Research funding: National Natural Science Foundation of China (51973246, 52373018); Program for Innovative Research Team (in Science and Technology) in University of Henan Province (23IRTSTHN019); Key R&D projects in Henan Province (231111231600); Take the Lead Science and Technology Project of Henan Province (211110231200).
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Data availability: The raw data can be obtained on request from the corresponding author.
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Articles in the same Issue
- Frontmatter
- Research Articles
- Estimation of friction and wear properties of additively manufactured recycled-ABS parts using artificial neural network approach: effects of layer thickness, infill rate, and building direction
- Investigation of the mechanical, thermal and wear properties of eggshell/PLA composites
- Impact of fiber diameter on mechanical and water absorption properties of short bamboo fiber-reinforced polyester composites
- Polyurethane foam reinforced with Ag nanoparticle decorated ZnO nanorods: a dual-functional approach for improved antibacterial and mechanical properties
- Synthesis and characterization of ethylenediamine-modified F-44 phenolic epoxy fiber
- Study on flame retardant properties and thermal stability of synergistically modified polyurethane foam with ammonium polyphosphate and barium phytate
- Investigation on the mechanical and moisture uptake properties of epoxy-Terminalia arjuna fiber natural composites containing nano-silica
- Tribo-mechanical and structural characterizations of LLDPE matrix bio-composite reinforced with almond shell micro-particles: effects of the processing methodology
- Influence of the injection velocity profile on the properties of injection moulded parts
Articles in the same Issue
- Frontmatter
- Research Articles
- Estimation of friction and wear properties of additively manufactured recycled-ABS parts using artificial neural network approach: effects of layer thickness, infill rate, and building direction
- Investigation of the mechanical, thermal and wear properties of eggshell/PLA composites
- Impact of fiber diameter on mechanical and water absorption properties of short bamboo fiber-reinforced polyester composites
- Polyurethane foam reinforced with Ag nanoparticle decorated ZnO nanorods: a dual-functional approach for improved antibacterial and mechanical properties
- Synthesis and characterization of ethylenediamine-modified F-44 phenolic epoxy fiber
- Study on flame retardant properties and thermal stability of synergistically modified polyurethane foam with ammonium polyphosphate and barium phytate
- Investigation on the mechanical and moisture uptake properties of epoxy-Terminalia arjuna fiber natural composites containing nano-silica
- Tribo-mechanical and structural characterizations of LLDPE matrix bio-composite reinforced with almond shell micro-particles: effects of the processing methodology
- Influence of the injection velocity profile on the properties of injection moulded parts
