Effect of Sisal Fiber Composition on Thermal Conductivity and Sound Absorption of Composite Boards
Keywords:
Thermal conductivity, sound absorption, composite boards, sisal fibers, eco-friendly materials, heat transfer efficiency.Abstract
Thermal conductivity and sound absorption are two key characteristics in the development of innovative
composite materials. Thermal conductivity reflects a material's ability to conduct heat from one place to
another, while sound absorption indicates a material's ability to absorb sound waves. Composite boards
are increasingly popular in various applications, especially in the furniture industry, as they create
materials with superior properties compared to single materials used in their production. Previous
research has identified the potential of natural fibers as reinforcement in composite boards due to their
eco-friendly and biodegradable nature. However, research combining thermal conductivity and sound
absorption in composite boards with natural fibers is still limited. This study aims to explore the influence
of various compositions of sisal fibers on the thermal conductivity and sound absorption of composite
boards. Sisal fibers were chosen as the reinforcement due to their eco-friendly nature, low density, specific strength, and high modulus. The results show a significant increase in thermal conductivity of
composite boards at 10% to 30% volume fraction of sisal fibers. The uniform distribution of sisal fibers
within the composite matrix and good fiber orientation enhance the heat transfer efficiency in the
composite. Sound absorption testing reveals that composite boards with 30% volume fraction of sisal
fibers have the highest sound absorption coefficient, 0.494 at 200 Hz, while those with 10% volume
fraction have the lowest coefficient, 0.059 at 800 Hz. This study unveils the potential of sisal fiber
composite boards as an eco-friendly alternative material with good thermal conductivity and effective
sound absorption. The findings are expected to contribute to the development of high-performance
composite materials for various applications, including construction and furniture. Further research is
needed to optimize the performance of this material and explore its potential in broader industrial and
environmental contexts.
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