Surface modification of carbon fiber via electron‐beam irradiation grafting

Zhenjuan, Zang; Wang, Yuansheng; Deng, Qinyi; Siliang, Wang; He, Tao

doi:10.1002/sia.5182

Cited by 11 publications

(4 citation statements)

References 18 publications

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“…Therefore, a wide body of research has been focusing on CF surface treatments to strengthen adhesion at the CF/Polymer interface [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 ]. One method used is to create higher interfacial friction at the CF surface by acidic modification [ 5 ], however, drawbacks are lowered strength [ 6 , 7 ] by degradation of the surface, along with weight reduction of the fiber itself [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

“…EBI has been applied to both outside surfaces of finished CFRP samples [ 27 , 28 , 30 ], or directly to CFs in samples prior to assembly and heating [ 31 ] enhancing strength. EBI has been used with plasma polymerization to increase adhesion strength of CFRP [ 32 ], and for grafting on the CF surface [ 33 ]. Radiation cross-linker has been used in conjunction with EBI.…”

Section: Introductionmentioning

confidence: 99%

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Strengthening Process by Electron Beam to Carbon Fiber for Impact Strength Enhancement of Interlayered Thermoplastic-Polypropylene Carbon Fiber Composite

et al. 2022

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Strong adhesion between recyclable thermoplastic (TP) polymer and carbon fiber (CF) has always been highly sought after. Therefore, for an interlayered CF reinforced TP polypropylene (CFRTPP) composite composed of 3 sized CF plies, alternating between 4 PP sheets, designated [PP]4[CF]3, a process of activating CF plies directly on both sides with homogeneous low energy electron beam irradiation (EBI) under N2 gas, prior to lamination assembly and hot press of 4.0 MPa at 493 K for 3 min was carried out. Experimental results showed EBI dose of 43.2, 129, or 216 kGy significantly raised Charpy impact values, auc at all fracture probabilities, Pf. The 129 kGy dose appeared to be at or near optimum increasing auc 103%, 83%, and 65% at low-, median-, and high-Pf = 0.07, 0.50, and 0.93; while raising statistically lowest impact value, as at Pf = 0 calculated by 3-dimensional Weibull equation about 110%, indicating increased safety and reliability. It is assumed dangling bonds generated by the EBI rapidly form covalent bonds CF:C:O:C:PP and CF:C:C:PP at the interface, along with cross-linking in the PP near the CF. This is by charge transfer from CF to PP.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Strengthening Process by Electron Beam to Carbon Fiber for Impact Strength Enhancement of Interlayered Thermoplastic-Polypropylene Carbon Fiber Composite

et al. 2022

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“…Compared with other types of ionizing radiation, such as gamma rays or X-rays, electron-beams have a higher absorbed dose rate, which is advantageous for rapid processes and mass production [ 15 , 16 ]. Several works have studied pre-treatments using electron-beam irradiation for CF functionalization [ 17 , 18 , 19 ]. Our previous work attempted to irradiate HDPE-based CFRTPs by an electron-beam to enhance their mechanical properties [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Influences of Absorbed Dose Rate on the Mechanical Properties and Fiber–Matrix Interaction of High-Density Polyethylene-Based Carbon Fiber Reinforced Thermoplastic Irradiated by Electron-Beam

Park

Choi

et al. 2020

Polymers

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In this study, a high-density polyethylene (HDPE)-based carbon fiber-reinforced thermoplastic (CFRTP) was irradiated by an electron-beam. To assess the absorbed dose rate influence on its mechanical properties, the beam energy and absorbed dose were fixed, while the absorbed dose rates were varied. The tensile strength (TS) and Young’s modulus (YM) were evaluated. The irradiated CFRTP TS increased at absorbed dose rates of up to 6.8 kGy/s and decreased at higher rates. YM showed no meaningful differences. For CFRTPs constituents, the carbon fiber (CF) TS gradually increased, while the HDPE TS decreased slightly as the absorbed dose rates increased. The OH intermolecular bond was strongly developed in irradiated CFRTP at low absorbed dose rates and gradually declined when increasing those rates. X-ray photoelectron spectroscopy analysis revealed that the oxygen content of irradiated CFRTPs decreased with increasing absorbed dose rate due to the shorter irradiation time at higher dose rates. In conclusion, from the TS viewpoint, opposite effects occurred when increasing the absorbed dose rate: a favorable increase in CF TS and adverse decline of attractive hydrogen bonding interactions between HDPE and CF for CFRTPs TS. Therefore, the irradiated CFRTP TS was maximized at an optimum absorbed dose rate of 6.8 kGy/s.

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“…In addition, the interfacial properties are related to the microstructure and macrocharacteristics of composites, as well as the physical and chemical bonding force between each component under processing and operating conditions. As a result of comprehensive effect of multiple factors, the improvement in fiber/matrix interface properties is complex and tough, so it has always been one of the hot topics in the field of composite materials …”

Section: Introductionmentioning

confidence: 99%

Improved interfacial properties of carbon fiber composites by building stress transition layer with carbon nanotubes

et al. 2017

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For the purpose of improvement in interfacial property of carbon fiber composites through a facile process, the carboxyl-functionalized multiwalled carbon nanotubes (MWCNTs-COOH) were incorporated into the surface of JH-T800 carbon fiber using sizing and deposition technology. The surface morphology of MWCNTs-COOH-modified carbon fibers and fracture surfaces of unidirectional carbon fiber composites were observed via scanning electron microscopy and atomic force microscopy. According to the results of composites fragmentation test, the adoption of MWCNTs-COOH-modified carbon fibers resulted in the improved carbon fiber/ epoxy matrix interfacial bonding and interlaminer property by 32.1% and 31.9%, respectively. Through the combination of the above two kinds of pretreating process of carbon fibers, a stress transition layer with the gradient distribution of MWCNTs was built between carbon fiber and resin matrix, which was favorable for releasing stress concentration and hindering the propagation of crack, resulting in a higher reinforcing efficiency for the existing carbon fiber composites. K E Y W O R D Scarbon fiber, interfacial properties, interfacial structure, mechanical properties, nanocomposites

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Surface modification of carbon fiber via electron‐beam irradiation grafting

Cited by 11 publications

References 18 publications

Strengthening Process by Electron Beam to Carbon Fiber for Impact Strength Enhancement of Interlayered Thermoplastic-Polypropylene Carbon Fiber Composite

Strengthening Process by Electron Beam to Carbon Fiber for Impact Strength Enhancement of Interlayered Thermoplastic-Polypropylene Carbon Fiber Composite

Influences of Absorbed Dose Rate on the Mechanical Properties and Fiber–Matrix Interaction of High-Density Polyethylene-Based Carbon Fiber Reinforced Thermoplastic Irradiated by Electron-Beam

Improved interfacial properties of carbon fiber composites by building stress transition layer with carbon nanotubes

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