Background:
Polymer matrix based composites are the workhorse of the composite industries. Besides, the idea of modifying the polymer matrix by various inorganic fillers have greatly drawn attention of materials engineers due to their diversified applications and advanced properties.
Objective:
The objective of this work is to prepare, and characterize Titania (TiO2) and Silica (SiO2) nanoparticles and develop 1wt%, 3wt%, 5wt% and 10wt% TiO2 and SiO2 incorporated epoxy based nanocomposites.
Method:
The TiO2 nanoparticles are prepared by most famous and conventional sol-gel method and SiO2 nanoparticles are extracted from Padma river (silica) sand obtained from Rajshahi city, Bangladesh.
Results:
The XRD patterns and SEM image ensures the formation of TiO2 and SiO2 nanoparticles. The mechanical properties and Mechanical properties like tensile strength, flexural strength, young modulus and Rockwell hardness of the nanocomposites are also determined using universal testing machine (UTM) and Digital Shore durometer respectively. The tests reveal that addition of nanoparticles have increased hardness and young modulus of the nanocomposites decreasing the tensile and flexural strength than that of neat epoxy.
Conclusion:
The TiO2 and SiO2 nanoparticles have synthesized successfully. The preliminary experiments predict that addition of nanoparticles (TiO2, SiO2) converts the composite from ductile to brittle material.
Jute fiber was modified by epoxy resin and hematite nanoparticle. In this study alpha Fe2O3 nanoparticle in size at 22~23 nm made of sol-gel method commonly known as hematite was used. Chopped and scoured jute fibre was washed, neutralized and finally dried called modified fiber. Modified fiber was grafted with admixture of polyethylene glycol and aluminum salt and grafted sheet was then cut into small pieces. The raw jute fiber was layered using epoxy and pressed preparing Raw Jute Reinforced Epoxy Composite (RJREC). Similarly, the Bleached Jute Reinforced Epoxy Composites (BJREC) and Modified Jute Reinforced Epoxy Composites (BJREC) were also prepared. The Modified Jute Fibre Nano Disperse Epoxy Composites (MJRNDEC) was prepared by sandwiching three layers of Modified jute fabric with epoxy and nano particle. Epoxy sheet with nanoparticles and without nanoparticle were also produced. Produced samples were characterized and compared Tensile in terms of their mechanical properties. Obtained results show that modified jute fiber epoxy nano Fe2O3¬ dispersed composites exert better tensile and flexural strength compared to raw and bleached jute fiber epoxy composites.
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