Improvement of carbon fiber surface properties using electron beam irradiation

Improvement of carbon fiber surface properties using electron beam irradiation 1 corresp first-author Corresponding author. E-mail: espino@ipen.br Corresponding author. E-mail: espino@ipen.br espino@ipen.br 1 2 Instituto de Pesquisas Energéticas e Nucleares – IPEN/CNEN-SP, Av. Prof. Lineu Prestes, 2242, Cidade Universitária, 05508-000, São Paulo, SP – Brazil; Instituto de Pesquisas Energéticas e Nucleares – IPEN/CNEN-SP, Av. Prof. Lineu Prestes, 2242, Cidade Universitária, 05508-000, São Paulo, SP – Brazil; Centro Tecnológico da Marinha em São Paulo, Av. Prof. Lineu Prestes, 2468, Cidade Universitária, 05508-000, São Paulo, SP - Brazil Centro Tecnológico da Marinha em São Paulo, Av. Prof. Lineu Prestes, 2468, Cidade Universitária, 05508-000, São Paulo, SP - Brazil Carbon fiber-reinforced advance composites have been used for structural applications, mainly on account of their mechanical properties. The main factor for a good mechanical performance of carbon fiber-reinforced composite is the interfacial interaction between its components, which are carbon fiber and polymeric matrix. The aim of this study is to improve the surface properties of the carbon fiber using ionizing radiation from an electron beam to obtain better adhesion properties in the resultant composite. EB radiation was applied on the carbon fiber itself before preparing test specimens for the mechanical tests. Experimental results showed that EB irradiation improved the tensile strength of carbon fiber samples. The maximum value in tensile strength was reached using doses of about 250 kGy. After breakage, the morphology aspect of the tensile specimens prepared with irradiated and non-irradiated carbon fibers were evaluated. SEM micrographs showed modifications on the carbon fiber surface. EB irradiation Carbon fiber Composites Tensile strength SEM References Singh A , Nuclear Instruments and Methods in Physical Research B , 2001 , 185 : 50 - 54 Nuclear Instruments and Methods in Physical Research B Zsigmond B , Halász L , Czvikovszky T , Nuclear Instruments and Methods in Physical Research B , 2003 , 208 : 247 - 251 Nuclear Instruments and Methods in Physical Research B Zsigmond B , Halász L , Czvikovszky T , Radiation Physics and Chemistry , 2003 , 67 : 441 - 445 Radiation Physics and Chemistry Berejka A , Eberle C , Radiation Physics and Chemistry , 2002 , 63 : 551 - 556 Radiation Physics and Chemistry Alessi S , Calderaro E , Parlato A , et al . Nuclear Instruments and Methods in Physical Research B , 2005 , 236 : 55 - 60 Nuclear Instruments and Methods in Physical Research B ASTM Standard, D 4018-99 ASTM Standard, E83 Giovedi C , Machado L D B , Pino E S , et al . Nuclear Instruments and Methods in Physical Research B , 2005 , 236 : 526 - 530 Nuclear Instruments and Methods in Physical Research B 10.1016/S1001-8042(07)60016-5 O631.3 + 4,TQ342 + .74 2007-01-20 2021-01-19 2007 Nuclear Science and Techniques 01 18