VACUUM INFUSED SANDWICH STRUCTURES BASED ON SISAL FABRICS

Ano: 
2014
Palavras chave: 
Sandwich structure
Sisal fabric
Polyester
Vacuum infusion

The materials sector usually seeks light, low cost and high performance materials and sandwich structures, which combine two external faces and a low density core, are an excellent choice for many applications. The aim of this study is to produce sandwich structures using a polyester matrix and sisal (Agave sisalana) fabrics with a PET core. Three types of sisal fabrics with distinct aerial density and architecture were produced for this work and their performance were compared with standard commercial glass-fiber fabric. The composite sandwiches were produced by vacuum infusion and characterized through longitudinal/axial compression and flexural testing. The obtained sandwich composites with sisal fabric showed mechanical performance similar or even superior than that of glass fibers for similar fiber volume fraction. Therefore, they were considered an attractive alternative for replacing glass fiber fabrics in selected industrial applications.