Comparative study of natural fiber-Reinforced composites for sustainable thermal insulation in construction

Q1 Chemical Engineering International Journal of Thermofluids Pub Date : 2024-09-06 DOI:10.1016/j.ijft.2024.100839
Sheymaa Alazzawi , Walaa A. Mahmood , Suha K. Shihab
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Abstract

Natural fiber-reinforced composites are increasingly recognized as sustainable alternatives in construction materials due to their environmentally friendly properties and ability to increase thermal insulation. This study conducts an in-depth comparative study between palm fiber (DPF) composites and other natural fiber-reinforced composites, including hemp and jute, with a focus on their application as insulation that provides insight into their thermal properties, performance, and mechanical properties to inform sustainable construction practices. The research methodology involves constructing and producing composite samples using date palm, hemp, and jute fibers, each combined into a common base material. Composites are mold-made, ensuring consistent and reproducible samples for testing. Through a systematic investigation, we explore these composites' thermal, and mechanical properties. Testing covers a specific range of fiber loadings, from 10 wt % – 30 wt %. Specific characterization techniques, including compression test, bending test, impact, FT-IR, and DSC, were used to evaluate the behavior of the composites under various conditions. Our results show that the thermal conductivity of the composites ranges from 0.0514 – 0.084 W/m. K for different fiber loading is affected by the fiber content.

Furthermore, at maximum fiber concentration (30 by weight), the highest heat capacity of the hemp composite was 1674 J/Kg.K. The 30 wt % of jute and date palm composites achieved a maximum compressive strength of (70 MPa) and (64 MPa) respectively.

In summary, this comprehensive study demonstrates the potential of natural fiber-reinforced composites as sustainable and fully bio-based alternatives for construction-related applications. Superior thermal properties and improved mechanical strength highlight their viability in thermal insulation applications.

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天然纤维增强复合材料在建筑中用于可持续隔热的比较研究
天然纤维增强复合材料因其环保特性和提高隔热性能,被越来越多的人视为建筑材料的可持续替代品。本研究对棕榈纤维(DPF)复合材料和其他天然纤维增强复合材料(包括大麻和黄麻)进行了深入的比较研究,重点关注它们作为隔热材料的应用,深入了解它们的热特性、性能和机械特性,为可持续建筑实践提供参考。研究方法包括使用枣椰树纤维、大麻纤维和黄麻纤维构建和生产复合材料样品,每种纤维都与一种共同的基础材料结合在一起。复合材料采用模具制造,确保测试样品的一致性和可重复性。通过系统的研究,我们探索了这些复合材料的热性能和机械性能。测试涵盖特定的纤维负载范围,从 10 wt % 到 30 wt %。具体的表征技术包括压缩试验、弯曲试验、冲击、傅立叶变换红外光谱和 DSC,用于评估复合材料在各种条件下的行为。结果表明,复合材料的热导率范围为 0.0514 - 0.084 W/m。此外,在最大纤维浓度(30 重量百分比)下,大麻复合材料的最高热容量为 1674 J/Kg.K。30 重量百分比的黄麻和枣椰复合材料的最大抗压强度分别为(70 兆帕)和(64 兆帕)。卓越的热性能和更高的机械强度凸显了其在隔热应用中的可行性。
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来源期刊
International Journal of Thermofluids
International Journal of Thermofluids Engineering-Mechanical Engineering
CiteScore
10.10
自引率
0.00%
发文量
111
审稿时长
66 days
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