基于枣椰树毡和功能化氧化石墨烯的结构绝缘板的生产，用于EMI屏蔽应用

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy Pub Date : 2025-09-25 DOI:10.1016/j.biombioe.2025.108409

Nabil Bouhfid , Fouzia Lamnasfi , Aziz Ettouhami , Marya Raji , Hamid Essabir , Mohammed Ouadi Bensalah , Abou el kacem Qaiss

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引用次数: 0

摘要

天然纤维是建筑中合成材料的环保替代品，如结构隔热板（sip），因为它们具有高生物降解性、轻质性、易于成型和减少对环境的影响。然而，在天然纤维基复合材料，特别是热固性生物复合材料中实现高机械强度仍然是一个挑战。为了解决这一问题，同时增强电磁干扰（EMI）屏蔽，提出了一种将树脂与石墨烯纳米片结合的混合方法。在这项研究中，通过将椰枣叶整理成纤维，并在含有功能化氧化石墨烯（GO）的混合环氧树脂中浸渍，其浓度分别为0、1和3 wt%，从而开发了椰枣毡复合材料。以硅烷分子（辛基三乙氧基硅烷）为偶联剂制备了化学改性和不改性的复合材料。然后通过压缩成型处理复合材料。结果表明，加入氧化石墨烯作为纳米填料可显著提高弯曲模量+ 40%，而硅烷修饰的氧化石墨烯可提高拉伸强度+ 73%。此外，通过比较接触角测量，发现功能化氧化石墨烯的加入改善了棕榈毡/环氧复合材料的疏水性。

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Production of Structural Insulated Panels Based on date palm felt and functionalized graphene oxide for EMI shielding applications

Natural fibers are an eco-friendly alternative to synthetic materials in construction, such as in structural insulated panels (SIPs), due to their high biodegradability, lightweight nature, ease of shaping, and reduced environmental impact. However, achieving high mechanical strength in natural fiber-based composites, particularly in thermoset biocomposites, remains a challenge. To address this issue while also enhancing electromagnetic interference (EMI) shielding, a hybrid approach combining resin with graphene nanosheets is proposed. In this study, date palm felt composites were developed by carding the fronds into fibers and impregnating them with a hybrid epoxy resin containing functionalized graphene oxide (GO) at concentrations of 0, 1, and 3 wt%. The composites were prepared with and without chemical modification using silane molecules (octyltriethoxysilane) as coupling agents. The composites were then processed via compression molding. The results demonstrated that incorporating graphene oxide as a nanofiller significantly improved the bending modulus by +40 %, while silane-modified graphene oxide enhanced tensile strength by +73 %. Additionally, the hydrophobic properties of the palm felt/epoxy composites were improved with the addition of functionalized graphene oxide, as evidenced by comparative contact angle measurements.

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来源期刊

Biomass & Bioenergy 工程技术-能源与燃料

CiteScore

11.50

自引率

3.30%

发文量

258

审稿时长

60 days

期刊介绍： Biomass & Bioenergy is an international journal publishing original research papers and short communications, review articles and case studies on biological resources, chemical and biological processes, and biomass products for new renewable sources of energy and materials. The scope of the journal extends to the environmental, management and economic aspects of biomass and bioenergy. Key areas covered by the journal: • Biomass: sources, energy crop production processes, genetic improvements, composition. Please note that research on these biomass subjects must be linked directly to bioenergy generation. • Biological Residues: residues/rests from agricultural production, forestry and plantations (palm, sugar etc), processing industries, and municipal sources (MSW). Papers on the use of biomass residues through innovative processes/technological novelty and/or consideration of feedstock/system sustainability (or unsustainability) are welcomed. However waste treatment processes and pollution control or mitigation which are only tangentially related to bioenergy are not in the scope of the journal, as they are more suited to publications in the environmental arena. Papers that describe conventional waste streams (ie well described in existing literature) that do not empirically address ''new'' added value from the process are not suitable for submission to the journal. • Bioenergy Processes: fermentations, thermochemical conversions, liquid and gaseous fuels, and petrochemical substitutes • Bioenergy Utilization: direct combustion, gasification, electricity production, chemical processes, and by-product remediation • Biomass and the Environment: carbon cycle, the net energy efficiency of bioenergy systems, assessment of sustainability, and biodiversity issues.