Evaluation of the mechanical properties of carbon fiber after electron beam irradiation

Giovedi, Claudia; Machado, Luci Diva Brocardo; Augusto, Marcos; Pino, Eddy S.; Radino, Patrícia

doi:10.1016/j.nimb.2005.04.033

Cited by 23 publications

(11 citation statements)

References 3 publications

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“…According to this, extensive investigations have been studied and as a result, chemical oxidation, electrochemical treatments, sizing, plasma treatments, high energy irradiation, and chemical grafting have all applied as viable techniques for surface modification of carbon fibers. Among these methods, electron‐beam (EB) irradiation modification has been extensively developed in fiber surface modification recently . EB irradiation technique has prominent merits, for instance, fast reaction time, low damage of materials, high efficiency and not demanding for reaction conditions .…”

Section: Introductionmentioning

confidence: 99%

Amino‐functionalization of carbon fibers through electron‐beam irradiation technique

Lian

Wang

Zhenjuan

et al. 2013

J of Applied Polymer Sci

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Amino-functinonalized carbon fibers were achieved via electron-beam (EB) irradiation in Diethylenetriamine (DETA) solution and triethylene tetramine (TETA) solution at 200 kGy. Different graft monomer concentrations were investigated to find the optimal concentration of each graft monomer. X-ray photoelectron spectroscopy, scanning electron microscopy, and Raman spectroscopy were applied to investigate chemical composition and functional groups, topography and disorder degree of aminofunctionalized carbon fibers surface. Meanwhile, adsorption ability and interfacial adhesion between modified carbon fibers and epoxy resin were determined by TGA and interlaminar shear strength (ILSS). It is found that amino-functionalized carbon fibers which had rougher and more active surface performed better adsorption ability on epoxy resin than untreated fibers. The optimal ILSS values of carbon fiber (treated with DETA and TETA) reinforced composites were 21.37 MPa and 18.28 MPa, which were much higher than that of untreated fiber reinforced composites. The comprehensive results demonstrated that in this condition, the optimal grafting concentrations of both DETA and TETA were 1.5 mol/L.

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Section: Introductionmentioning

confidence: 99%

Amino‐functionalization of carbon fibers through electron‐beam irradiation technique

Lian

Wang

Zhenjuan

et al. 2013

J of Applied Polymer Sci

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“…A irradiação induz reações de reticulação ou de degradação, simultaneamente, e sempre uma delas prevalece sobre a outra. A reticulação melhora as propriedades químicas, físicas e mecânicas do material, já a segunda resulta na degradação do material podendo levar à sua completa destruição (GIOVEDI et al, 2005). Como exemplo de melhoria das propriedades dos polímeros devido às reações de reticulação tem-se o aumento da durabilidade e do grau de segurança de pneus, cujas lâminas de borracha das partes laterais foram irradiadas.…”

Section: Aplicações Da Radiação Ionizanteunclassified

Energia Ionizante Na Conservação De Alimentos: Revisão

et al. 2012

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Efetuou-se revisão de literatura sobre a utilização da radiação ionizante como forma de conservação de alimentos. Foram abordados tópicos como sua evolução histórica, o princípio de funcionamento dos equipamentos, suas diferentes áreas de aplicação e, principalmente, sua utilização na conservação de alimentos. São apresentados os resultados de estudos realizados com o objetivo de verificar a eficiência da radiação ionizante na eliminação de vários micro-organismos em diversos produtos e o efeito da radiação ionizante nas características sensoriais e nutricionais dos alimentos. Apesar de já ter sido comprovada a segurança da aplicação da radiação ionizante em alimentos, da sua utilização ser permitida em diversos países e de ser cientificamente aceita como excelente método de conservação de alimentos, o progresso no seu uso comercial tem sido lento face às interpretações errôneas dos consumidores e à falta de informações sobre o uso dessa tecnologia.

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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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Evaluation of the mechanical properties of carbon fiber after electron beam irradiation

Cited by 23 publications

References 3 publications

Amino‐functionalization of carbon fibers through electron‐beam irradiation technique

Amino‐functionalization of carbon fibers through electron‐beam irradiation technique

Energia Ionizante Na Conservação De Alimentos: Revisão

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

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