TITLE:
Elaboration and Characterization of a Hybrid Composite Material with Two Particles of the Same Size: Coco Shells and Palm Shells
AUTHORS:
Pierre Marcel Anicet Noah, Ebanda Fabien Betene, Suzie Viviane Obame, Beassoum Allasra, Martin Christian Bindjeme, Ateba Atangana
KEYWORDS:
Composite, Hybrid, Young’s Modulus, Polyester, Particles, Hulls of Palm Nuts, Hulls of Coconut
JOURNAL NAME:
Open Journal of Composite Materials,
Vol.10 No.4,
August
10,
2020
ABSTRACT: This
work aims to develop and characterize a hybrid composite material with two
particles of the same size. As reinforcing particles, the hulls of palm nuts
and coconut are chosen. Hybrid composite material composites in the form of
specimens were produced by molding at 10%, 20% and 30% mass fractions in
various sizes (0.63 mm,
1.25 mm and
2.5 mm).
The samples were physically characterized (water absorption rate, moisture
content, actual, theoretical and apparent density) and mechanical in 3-point
flexion. The main results are: the highest and minimum water absorption rate
are respectively 3.57% and 0.67% for respectively particle sizes 1.25 mm (sample P10C30) and
0.67% in the size of 0.63 mm
(sample P10C10). The moisture content varies from 0.64 to 7.14% respectively
for the P20C20 (2.5 mm) and P10C30 (2.5 mm) samples. The maximum and minimum
real density are 1340,518 Kg/m3 and 1055.981 Kg/m3,
for respectively the composites of particles sizes 1.25 mm (P20C10) and 0.63 mm (sample P20C20). The minimum real density is Its maximum theoretical density is 1194.949 Kg/m3 (for samples P20C10, P10C10 and P30C10); however, the minimum is
1189.966 Kg/m3 (P10C20 and P20C20). The bulk density varies from
933.28 Kg/m3 to 1176.1 Kg/m3,
respectively, in sizes from 2.5 mm
(P10C30) to 0.63 mm (for
P10C30). As for the mechanical characteristics, the Modulus of Elasticity (MOE)
varies from 25.664 GPa to 25.759 GPa, respectively, the samples P10C10 (1.25
mm) and P10C20 (2.5 mm). The MOE values describe a parabola whose peak is
reached when the palm shell loads are 20%, that is to say P20C10, whatever the
particle size distribution. In resilience, samples with small particles are
more resilient with a maximum value of 22.49 J/cm2 and a minimum
value of 4.45 J/cm2 to verify the principles of Hall-Petch’s law.