Characterization techniques for evaluation of mechanical properties of acrylic polyurethane coating of optical fiber. / Técnicas de caracterização para avaliação das propriedades mecânicas dos revestimentos de poliuretano acrilado de fibra óptica.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2002

RESUMO

The datas and information transmission in the optical fiber have been increasing in the last years. The interest to evaluate the mechanical reliability became necessary, after that a optical fiber, from a cable installed, was cracking very easily. The principal aim of this work was establishing methodologies to evaluate the polymer degradation state. Through of this techniques we search to find out parameters (E, E", tan δ, Tg. etc) that could denote the degradation state of the coatings. Different techniques were utilized to evaluate the coating of the optical fibers such as: differential scanning calorimeter (DSC), differential photocalorimeter (DPC), dynamic mechanic thermal analyzer (DMTA) and infrared spectroscopy (FIIR). From the method development (DMTA), it was possible to evaluate the mechanical realiability of many commercial fibers. DMTA and FTIR techniques shown to be very promising to obtain very dates to respect of polymer characteristics.

ASSUNTO(S)

ftir revestimento de poliuretano acrilado optical fiber acrylic poliurethane coating dmta propriedades mecânicas dmta dpc dsc dpc ftir fibra óptica mechanical properties dsc

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