Abstract
The present paper studies water absorption behavior and its consequence on mechanical properties of untreated and chemically treated Sansevieria /carbon fiber reinforced hybrid epoxy (Sria/CF-Ep) composite with calcium carbonate (CaCO3) nanoparticles. Sansevieria /carbon fiber (30/5 wt%) reinforced hybrid epoxy composite with 1.5, 3 and 4.5 wt% of CaCO3 have been developed by hand lay-up method followed by heat press. The water absorption characteristics of the Sria fibers were obtained by immersing the composite samples in sea water at room temperature, until reaching their water content saturation level. The dry and water-immersed hybrid composite samples were subjected to hardness, interlaminar shear, tensile, flexural, and impact tests. The water absorption development of hybrid composites was found to follow Fickian diffusion behavior. Diffusion coefficients and maximum water uptake results were evaluated; the outcome showed that both increased with an increase in filler loading to study the consequence of water penetration in the fiber/matrix interface. The study shows that the mechanical and water-resistant properties of the Sria were improved through chemical treatment and hybridization. Nevertheless, as a result of water penetrating the fiber/matrix interface, longer water-immersion times reduced the tensile and flexural strength of the composites.
Highlights
The environmental awareness in addition to the government stringent rules throughout the globe has encouraged the scholarly and industrial researches to expand eco-friendly, sustainable, and biodegradable composite materials, as a result often referred to as green composites [1]
The present paper studies water absorption behavior and its consequence on mechanical properties of untreated and chemically treated Sansevieria/carbon fiber reinforced hybrid epoxy (Sria/carbon fibers (CF)-Ep) composite with calcium carbonate (CaCO3) nanoparticles
The objective of this study is to investigate the effects of sea water on the mechanical properties of CaCO3 filled Sria/CF-Ep composites
Summary
The environmental awareness in addition to the government stringent rules throughout the globe has encouraged the scholarly and industrial researches to expand eco-friendly, sustainable, and biodegradable composite materials, as a result often referred to as green composites [1]. The habit of utilizing fiber reinforced polymer composites has considerably increased since last 3 decades, by glass fiber reinforced composites taking on a significant role [2] [3]. The development of glass fiber reinforced polymer composite materials and their extensive application has caused a number of ecological problems, predominantly with regards to waste management [4]. Renewable and biodegradable materials are substitute to synthetic fibers and polymers derived from petroleum used in traditional fiber reinforced polymer composites [5] [6]. The use of natural plant fibers (kenaf, jute, hemp, flax etc.) as reinforcement in matrix with little styrene substance and emissions represents a suitable explanation to this problem [7] [8]. Previous research works has shown that natural fibers have the potential to substitute glass fibers in various applications [9]. Natural fibers have high strength to weight ratio, abundant in nature and biodegradability, corrosion resistance, are critical at the end of life of products, and have similar specific strength and modulus as conventional glass fibers
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