Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Environmental aging in polymeric composites using curauá fiber
Submission Author:
Renata Felipe , RN , Brazil
Co-Authors:
Raimundo Felipe, Ana Claudia de Melo Caldas Batista, Eve Maria Freire de Aquino, Renata Felipe
Presenter: Renata Felipe
doi://10.26678/ABCM.COBEM2017.COB17-1120
Abstract
Natural fibers distinguishing themselves by the increase in implementing as reinforcement in polymer composites to replace synthetic reinforcements because its advantages such as biodegradability, low cost, low density, good toughness, good thermal properties and reduced use of instruments for its treatment or processing. Among these, it's possible to highlight the use of curauá fiber, which has excellent mechanical strength (when compared with other natural fibers) and it is from the Amazon, have a high potential for agriculture and can improve the social and economic development. However, study of analyze the influence of the environmental aging, characterized in controlled environmental conditions of heated steam and ultraviolet radiation, is still relatively poorly. To understand the effect of environmental aging in composite with curauá fiber were developed two polymeric composites, both with seven layers, one consisting only short glass-E fibers and the other of the hybrid type reinforced with short glass-E/curauá fibers, the fiber used was the variety called purple curauá, provided the Embrapa Amazônia. The materials were exposed to alternating cycles of UV radiation and heated steam. At the end of the exposure period the specimens were evaluated for structural stability by measurement of thickness variation technique and the measurement of mass variation technique. For the techniques used was detected loss thickness and mass for both aged laminates, this being higher loss in the hybrid laminate, justified by the presence of natural fiber curauá without surface treatment, thus containing impurities on the fiber surface and being more susceptible to this degradation process.
Keywords
Hybrid polymer composite, structural instability, accelerated environmental aging
