Experimental Investigation of High Filler Loading of SiO2 on the Mechanical and Dynamic Mechanical Analysis of Natural PALF fibre-Based Hybrid Composite

Abstract

This work aims to investigate the effect of SiO 2 nanoparticles on the mechanical properties of pineapple leaf ber (PALF) epoxy hybrid composites. The compression molding process was used to create the composite. To achieve the aforementioned goals, the blends were made using 25% PALF and varied weight proportions (3wt%, 6wt%, and 9wt%) of SiO 2 nanoparticles. Tensile, bending, impact, interlaminar shear, shoreline D hardness, and dynamic mechanical analysis were all evaluated. SEM was used to examine the morphology of the materials, and an FTIR spectrometer was used to look for the presence of organic chemicals in ber-reinforced composite materials. The ndings show that adding 25% PALF ber and 6% SiO 2 nanoparticles (D-type) to the epoxy polymer improved the thermal and mechanical properties of the composites. It can be attributed to the improved interaction and homogeneous dispersion of the llers and epoxy polymers. Moreover, the water uptake parameters of all samples were studied. The ndings showed that the inclusion of reinforcements boosts the water uptake of the composite signi cantly. The initial deterioration rate of the SiO 2 -incorporated hybrids is almost the same, at about 400°C, which is considerably greater than that of the beginning breakdown temperatures of PALF (300°C), according to the thermography study. This might imply that the ber and polymers form a stronger bond, reducing polymer movement and increasing the thermostability of the combination.

Hybrid calotropis gigantea fibre-reinforced epoxy composites with SiO2’s longer-term moisture absorbable and its impacts on mechanical and dynamic mechanical properties

“…found that basalt fibre-reinforced polymeric bars had reduced glassy transitional rates caused by the plasticity impact. Additionally, the upward trajectory of the Tg values in the present investigation is consistent with those of previous studies that have been described in the literature [51,52]. On the other hand, figure 11 demonstrates that the storage modulus of the moist hybrids containing 3% and 4.5 wt% SiO 2 was greater compared to that of the dry specimens.…”

“…This weakens the connection among the SiO 2 nanoparticles and creates micropores that let water droplets pass among them. Minimal Van der Waals forces link to the additive agglomeration in the present situation [52]. As seen in the results obtained with the addition of 3 wt% and 4.5 wt% SiO 2 water soaking, that may lead to an impairment of the bonding capability of the hybrid materials and a considerable decrease in Tg levels.…”