Exploring Mechanical and Flammability Traits in Hybrid Composites of Crown Flower/Nano SiO2/4ZnO·B2O3·H2O under Cryogenic Conditions: an Experimental Study.

Autor: Velmurugan, G., Chohan, Jasgurpreet Singh, Sathish, R., Velumayil, Ramesh, Kumar, R. Ranjith, Raja, D. Elil, Nagaraj, M., Kumar, A. John Presin
Zdroj: SILICON (1876990X); Jun2024, Vol. 16 Issue 8, p3281-3295, 15p
Abstrakt: One of the trendiest areas in the world of materials research is multifunctional polymer nanocomposites. The long-term behaviour of fibre-reinforced polymer composites exposed to cryogenic environments is discussed in this article in light of current advancements. The composites were created using the standard hand layup procedure in order to achieve the aforementioned goals. Crown flower fibre (CF) serves as a reinforcement, while 3 wt.% of nano-SiO2 and 3 wt.% of zinc borates (4ZnO·B2O3·H2O) serve as fillers, and the LY566 type of epoxy resin with the HY 951 type of hardener were considered as a matrix system. To complete the mentioned objectives, three types of composites were fabricated: pure epoxy-based CF laminate, CF/3 wt.% of nano SiO2 hybrid, and CF/3 wt.% of nano 4ZnO·B2O3·H2O-based hybrid laminates. Analysis of the mechanical behaviour of composite materials that had been created was done under both normal and cryogenic circumstances at two distinct temperatures (−60 and 30 °C). To investigate the flammability properties of the hybrid composites, tests with horizontal and vertical flame retardants were conducted. X-ray diffraction and Fourier transform infrared spectroscopy studies were used to validate the nanofiller's existence. The manufactured CF/3 wt.% of SiO2-based hybrid composites have good mechanical capabilities in a cryogenic environment of −60 °C, according to the results. This is because the 3 wt% SiO2-loaded samples are more resistant to deformation and can take more force before breaking at the impact zone because they have a larger surface area per volume fraction and better adhesion. In terms of flammability characteristics, the hybrid CF/ 3 wt.% of 4ZnO.B2O3.H2O (zinc borate) exhibits better results (burning rate of 7.14 mm/min). The burning rate was reduced as a result of the use of nanofillers. This is due to zinc borate's promising flame-retardant qualities, which prevent flame spread and aid in flame extinguishment. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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