Water absorption parameters of glass/epoxy composites based on dimension effect

Abstract

In this study, the water uptake parameters of S glass/epoxy samples have been assessed experimentally. The glass/epoxy specimens were manufactured by the vacuum assisted resin transfer method (VARIM) have been kept in distilled water and sea water at 25°C and 70°C temperatures for 1000 hours in a hydrothermal aging cabin. The water gain behavior of samples with different length/width (L/w) ratios has been investigated based on criteria such as different water types and different temperatures. Furthermore, the water uptake trend of samples has been assessed analytically based on the Fick's law in addition to the experimental method. The results have shown that the L/w ratio, water type, and temperature have an important influence on the water gain character of glass/epoxy composites. The experimental weight measurements showed that temperature increase was caused to more water absorption in both water types. Furthermore, it was noted the increase in L/w ratio was caused to more water sorption. Moreover, experimental and analytical results have shown that water intake trends consistent in both methods.

An experimental study on the hydrothermal aging effect on the free vibration properties of hybrid aramid/glass/epoxy composites: Comparison of sea water and distilled water

“…GAG DW70, for instance, indicates hybrid glass-aramid-glass samples aged in distilled water at 70 C and examined in the "wet" state. Water absorption parameters of same kind of samples were investigated in detail in our previous works 17,18,[21][22][23] hence these parameters were not investigated in this article.…”

Design of Mathematical Model and Selected Coefficient Specifications for Composite Materials Reinforced with Fabric from Waste Tyres

“…It is widely known that the presence of moisture or liquids can affect the properties of composite materials, such as their strength, stiffness, and dimensional stability [11]. In the literature, we can find studies that investigate the nature of water uptake by composite materials because the water molecules absorbed by these materials play the role of a plasticizer and can disrupt the fibre/resin structure and thus cause deterioration of the fibre/matrix interface [12]. Some types of liquid and gaseous substances have an aggressive effect on the surfaces of plastic products.…”