Fabrication and Strength Assessment of Carbonaceous Fillers Reinforced Epoxy Composites
Loading...
Date
2022-10-01
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
G.B. Pant University of Agriculture and Technology, Pantnagar-263145
Abstract
Biochar (BC) from pine leaves was derived through slight modification in
temperature and time as prescribed. After that graphene oxide (GO) was prepared from BC
through slight modifications in stirring time, speed and concentrations of ingredients as
prescribed in Hummer's method. A series of epoxy composites (ECs) were fabricated by
dispersing carbonaceous fillers (CFs) with concentrations ranging 0-5% weight into a
commercially available epoxy resin (CY-230) followed by curing with triethylene tetramine
(TETA, HY-951). The CFs are nanographite (NG), BC, GO. The qualitative dispersion of
CFs into cured epoxy was ascertained through atomic force microscopy (AFM) and
scanning electron microscopy (SEM). The ECs were converted into different dimensions
according to ASTM D specifications. The effect of CFs on their mechanical and thermal
properties has been evaluated. With CFs concentration, a regular increase in hardness,
tensile, flexural and compressive properties has been observed when CFs added up to 3%
(w/w). This is attributed to homogeneous dispersion and good bonding between epoxy resin
and CFs. The effect of CFs on thermo-oxidative stability of cured epoxy as well as ECs was
investigated through simultaneous thermogravimetric-differential thermal analysisdifferential
thermogravimetry (TG-DTA-DTG). The visco-elastic behaviour of epoxy
composites was observed through dynamic mechanical analysis. This shows that the viscoelastic
behaviour was enhanced with the addition of CFs and increase in frequency.
Description
Keywords
Citation
Academic Research