Sustainable radiation protection using kenaf fibre-reinforced composite walls

The removal of unwanted radiation that might harm people or interfere with machinery led to the development of a microwave absorber. Kenaf fibre is employed to build partition walls due to its advantageous qualities. The objectives of this project are to design and simulate an anti-radiation partition wall using kenaf fibre, as well as to assess and evaluate the best absorption capabilities of a kenaf fibre partition wall with various dielectrics. The kenaf fibre used in the microwave absorber has similar dimensions but varies in dielectric constant. This paper decided to use Palm Oil Fuel Ash (POFA), kenaf fibre, cement, aluminium powder, and water in various ratios to develop anti-radiation partition walls. 20% and 5% of kenaf fibre, as well as 25%, 35% and 45% of POFA, were utilised in this paper. Naval Research Laboratory (NRL) Arch free-space method measured between 1 and 12 GHz the absorption performance of the constructed anti-radiation partition wall. Prototype C3 showcases remarkable reflectivity, registering -55.649 dB at 10.5 GHz (X-band), and attains optimal performance with a blend of 45% POFA and 5% kenaf fibre. Future investigations should prioritize additional research on kenaf fibre to enhance and refine its influence on reflectivity performance.