An Evaluation of the Dielectric Barrier Discharge Treatment on the Mechanical, Structural and Morphological Properties of Carbon Fibers

Autor(es)

da Silva Monte Vidal, Dielly Cavalcanti ^{[1, 2]} ; Santos, Alberto Lima ^[1] ; Kostov, Konstantin Georgiev ^[1] ; Goncalves da Silva, Leide Lili ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Fac Engn Guaratingueta, Dept Fis & Quim, Ave Ariberto Pereira da Cunha 333, BR-12516410 Guaratingueta, SP - Brazil

^[2] Fac Tecnol Pindamonhangaba, Pindamonhangaba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF AEROSPACE TECHNOLOGY AND MANAGEMENT; v. 10, 2018.
• Citações Web of Science: 1

Resumo

Carbon fibers (CFs) have been widely applied in the manufacture of polymeric composites. The mechanical properties of these composites depend on the adhesion in the matrix/CF interface. Since the CFs have poor adhesion properties, a surface treatment of the CFs becomes necessary. The plasma process used in this work was the dielectric barrier discharge (DBD). The DBD treatment of twill weave carbon fibers (2x2) was performed during 2.0; 5.0; 7.5 and 10.0 minutes. CF/polypropylene (PP) composites were produced by hot pressing method. The surface morphology, structure and mechanical properties of CFs were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), Raman spectroscopy, interlaminar shear test (ILSS) and dynamical mechanical analysis (DMA), respectively. SEM images show great changes on the CF surface after the treatment, AFM results show that the fiber treated for 2.0 min exhibited the highest roughness and Raman spectra revealed that the carbon fiber crystalline structure did not change after the treatment. The ILSS and DMA results show an increase of the mechanical strength and no major change in the glass temperature of the composites after the DBD treatment, respectively. Some results were compared to those obtained in our previous study, in which the plain weave fiber (1x1) was evaluated. (AU)

• Processo FAPESP: 13/09842-4 - Estudo da modificação superficial de fibras de carbono através de tratamentos a plasma para o aumento da adesão na interface dos compósitos fibra de carbono/PPS
• Beneficiário: Alberto Lima Santos
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 09/13843-0 - Estudo da superfície de fibras de carbono após tratamentos a plasma por descarga de barreira dielétrica (DBD)
• Beneficiário: Alberto Lima Santos
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 12/19634-7 - Estudo da superfície de fibras de carbono tratadas por plasma de descarga de barreira dielétrica (DBD) para a obtenção de compósitos poliméricos
• Beneficiário: Dielly Cavalcanti da Silva Monte Vidal
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 07/03714-3 - Tratamento interfacial de compósitos termoplásticos e de carbono vítreo através de técnicas assistidas por plasma para aplicações aeroespacial, eletroquímica e biomédica
• Beneficiário: Leide Lili Gonçalves da Silva Kostov
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores