Title

DYNAMIC-MECHANICAL ANALYSIS OF EPOXY COMPOSITES REINFORCED WITH GIANT BAMBOO FIBER (DENDROCALMUS GIGANTEUS)

DYNAMIC-MECHANICAL ANALYSIS OF EPOXY COMPOSITES REINFORCED WITH GIANT BAMBOO FIBER (DENDROCALMUS GIGANTEUS)

Authorship

Martins, Lucas Barbosa de Souza; Muylaert, MargemFrederico; Monteiro, Sergio Neves; Margem, Jean Igor; Loyola, Rômulo Leite

DOI

10.5151/2594-5327-22915

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Abstract

The variation with temperature of the dynamic-mechanical parameters for the epoxy matrix composites incorporated with up to 30% in volume of giant bamboo fiber was investigated. The analyzed parameters were the storage modulus, the loss modulus and the delta tangent. The investigation was conducted in the temperature interval from 25°C to 195°C in a DMA equipment operating at 1 Hz of frequency under a nitrogen flow. The results showed that the incorporation of long and aligned giant bamboo fibers tends to increase the viscoelastic stiffness of the epoxy matrix. By contrast, only minor changes occurred in both the glass transition temperature and the damping capacity of the structure as measured by the tan δ peaks. These are indications that the epoxy molecular mobility is not sensibly affected by interaction with the bamboo fibers in the composites.

 

The variation with temperature of the dynamic-mechanical parameters for the epoxy matrix composites incorporated with up to 30% in volume of giant bamboo fiber was investigated. The analyzed parameters were the storage modulus, the loss modulus and the delta tangent. The investigation was conducted in the temperature interval from 25°C to 195°C in a DMA equipment operating at 1 Hz of frequency under a nitrogen flow. The results showed that the incorporation of long and aligned giant bamboo fibers tends to increase the viscoelastic stiffness of the epoxy matrix. By contrast, only minor changes occurred in both the glass transition temperature and the damping capacity of the structure as measured by the tan δ peaks. These are indications that the epoxy molecular mobility is not sensibly affected by interaction with the bamboo fibers in the composites.

Keywords

Giant bamboo fiber; Epoxy composite; DMA; Glass transition temperature.

Giant bamboo fiber; Epoxy composite; DMA; Glass transition temperature.