Mechanical and free vibration properties of clamshell particles/polyester composites

Abstract

In this work, an experimental investigation was implemented to identify the effect of adding clamshell powder (CSP) into the polyester matrix on the tensile and impact properties along with vibration characteristics of the particulate composites towards using eco-friendly reinforcement phase. Different weight ratios of clamshell powder, ranged from 0 to 20 wt%, were loaded into the polyester resin with particle sizes ranged from 25 to 75 μm. Tensile, Charpy impact and free vibration tests were performed to the specimens fabricated from the neat polyester and CSP-filled polyester. The results showed that the inclusion of CSP into the polyester matrix could improve the tensile modulus of the polyester up to 50% when the CSP weight ratio equals to 12%. Meanwhile, the strain-to-failure, tensile and impact strengths showed decreasing trends with increasing the CSP filler content owing to the weak adhesion (bonding) strength between CSP and the polyester matrix. Maximum improvements in the fundamental natural frequency and damping ratio of CSP-filled polyester were 24% (at 12 wt% of CSP) and 21% (at 8 wt% of CSP), respectively. Based on the results, the clamshell powder could be used as a very cheap bio-filler material within the polyester matrix if the high stiffness composites with improved damping properties are required.

The effect of multiscale hybridization on the mechanical properties of natural fiber‐reinforced composites

“…For example, the tensile strength of the polyamide 6.6 (PA 6.6)/maleated poly[styrene‐b‐(ethylene‐co‐butylene)‐b‐styrene] (SEBS) was reduced by addition of glass particles 29 . Hejna et al and Mostafa et al, 30,31 also found significantly negative trends in the mechanical properties of filled composites and concluded that the reason was the fact that no treatment was used for the fillers. Therefore, it is obvious that the particle/matrix interfacial adhesion has a noticeable effect on the strength of filled micro and nanocomposites.…”

Effect of SiC nanoparticles on mechanical and damping properties of epoxy/polysulfide rubber blend composite

“…The Charpy impact tester (Grund WP-400 testing machine) depend of a standard test section that will be broken with an oscillating hammer. The test section was performed according to ISO-179 standard it is supported at both edges so that the hammer hits it in the middle [16].…”

Impact of hybrid nanosilica and nanoclay on the properties of palm rachis-reinforced recycled linear low-density polyethylene composites

“…A survey carried out among farmers and agricultural corporations in Egypt has expected that about 48.5 kg of palm residues is obtained per tree annually. 10,11 There is a proliferation of WPCs factories in the Middle East district. The proprietors of these industrial facilities need to increase the added value of this industry by increasing the loading of natural fibers used to reach more than twice the rate of plastic loading, but challenges are confronting us such as increased water absorption and a significant decrease in mechanical properties and the use of the coupling agent has become insufficient.…”

“…A survey carried out among farmers and agricultural corporations in Egypt has expected that about 48.5 kg of palm residues is obtained per tree annually. 10,11…”