Abstract
Interfacial interaction is one of the most important factors that affect the mechanical properties of the fiber reinforced composites. The effect of fabrics′ sizing removal from glass fibers’ surface by thermal treatment on the mechanical characteristics of polyethersulfone based composites at different fiber to polymer weight ratios was investigated. Three fiber to polymer weight ratios of 50/50, 60/40, and 70/30 were studied. Flexural and shear tests were carried out to illustrate the mechanical properties of the composites; the structure was studied using Fourier-transform infrared spectroscopy and scanning electron microscopy. It was shown that solution impregnation of glass fabrics with polyethersulfone before compression molding allows to achieve good mechanical properties of composites. The thermal treatment of glass fabrics before impregnation results in an increase in flexural and shear strength for all the composites due to the improvement of fiber–matrix interaction.
Highlights
Growing attention has been given to the improvement of polymeric composite properties, especially in regards to their high strength-to-weight ratio [1,2,3]
In the fabrics’ sizing removal from glass fibers (GF) surface on the structure and mechanical properties of PES based present work, we investigate the effect of formation route in addition to fabrics’ sizing removal from composites
Of CH, 2, and CH3; while the spectra of preheated glass fabrics did not show any noticeable peaks before 2200 cm−1 which means that the sizing coating after heating was below the detection limit [29]
Summary
Growing attention has been given to the improvement of polymeric composite properties, especially in regards to their high strength-to-weight ratio [1,2,3]. It was found that the properties of the composites are affected by the fibers’ geometry, orientation, concentration, and by the nature of the fibers [13,15,16,17,21,22] in addition to the interfacial adhesion between the fiber and polymer [23,24,25], which plays a crucial role in the composites’ strength. Most of the composites are made from epoxy resin, relatively low degradation temperatures (about 250 °C) which are much lower than the processing and most of the commercial sizings are often of the same nature These sizings have relatively low temperatures of the engineering plastics such as PES. GF surface on the structure and mechanical properties of PES based composites
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