Effects of Ramie Fiber/Boron Nitride Exposure on the Mechanical Characteristics of Injection-Moulded Polypropylene Composites for Automated Structural Applications

Year 2024, , 451 - 456, 31.12.2024

Venkatesh R

https://doi.org/10.30939/ijastech..1528281

Abstract

Hybrid fiber/ceramic to polymer matrix combination provides better tensile strength, improved flexural strength, good fracture toughness, durability, improved corrosion resistance, better chemical stability and good thermal behaviour reason; the composites are applied for high strength-to-weight ratio automotive structural applications. The present hybrid polypro-pylene composite is made with constant weight percentages of ramie fiber (chemically treated) and boron nitride (BN) particles (50nm) via an injection moulding machine configured with a hot press. Influences of ramie fiber (biodegradable) and BN on yield-tensile, elongation, and microhardness behaviour of hybrid polypropylene composite was experimentally studied with a statistical significance of 5 % followed by three trials. The composite of polypropylene is fabricated with 12 wt% of ramie (biodegradable) fiber along with BN of 6 wt% of BN and is exposed to superior yield & tensile strength, elongation percentage, and microhardness performance; it is superior to the value of unreinforced polypropylene. The yield & tensile strength & microhardness of polypropylene/12 wt% ramie fiber/ 6 wt% BN are 59.4±0.5MPa, 72.4±0.6MPa, 41.5%, and 53±0.2HV respectively. This polypropylene hybrid nanocomposite with 12 wt% and 6 wt% ramie (chemically treated) fiber and BN is recommended for automated structural application due to its enhanced tensile strength, microhardness, and improved elongation behaviour.

Keywords

Boron nitride, Injection mould, Polypropylene, Ramie fiber, Properties

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