Low-combustible, high-strength, and thermally stable bio-blended epoxy-based bio-nanocomposite using reduced graphene oxide as a strengthening agent

IF 2.3 3区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES Journal of Reinforced Plastics and Composites Pub Date : 2024-08-29 DOI:10.1177/07316844241279013

Umang Dubey, Panneerselvam K

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Abstract

Firms choose to maximize the use of natural resources when producing new generations of polymer composites. The incorporation of carbon-based nanoparticles into the polymer matrix resulted in substantial enhancements in strength qualities. In this work, a set of bio-nanocomposites was fabricated using reduced graphene oxide (rGO) at several weight %s (0, 0.25, 0.5, 0.75, and 1 wt.%) in a bio-blended epoxy thermoset matrix generated from adding cashew nut shell liquid (CNSL) as an additive in a commercial grade bisphenol-A-based unmodified liquid epoxy resin. Thermal and mechanical properties, morphology analysis, XRD analysis, flammability, and limiting oxygen index (LOI) were used for characterization. The mechanical properties of the bio-nanocomposite containing 0.75 wt.% of rGO were investigated, resulting in the observation of enhanced flexural strength by 43.97%, compression strength by 58.08%, tensile strength by 39.84%, impact energy by 47.05%, and shore-D hardness by 21.26% compared to neat epoxy. The thermal stability of a bio-nanocomposite containing 0.75 wt.% of rGO is not compromised while demonstrating a 44.71 % residual mass at 550°C compared to neat epoxy. The cured bio-blended epoxy has a 23.38% lower combustion rate than epoxy resin and shows slow burning rate.

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使用还原氧化石墨烯作为强化剂的低燃烧、高强度和热稳定的生物混合环氧基生物纳米复合材料

在生产新一代聚合物复合材料时，企业选择最大限度地利用自然资源。在聚合物基体中加入碳基纳米粒子可大幅提高强度。在这项工作中，我们使用还原型氧化石墨烯（rGO）在生物混合环氧热固性基体中制造了一组生物纳米复合材料，还原型氧化石墨烯的几个重量百分比（0、0.25、0.5、0.75 和 1 wt.%）是通过在基于双酚 A 的商业级未改性液态环氧树脂中添加腰果壳液（CNSL）作为添加剂而产生的。热性能和机械性能、形貌分析、X 射线衍射分析、可燃性和极限氧指数（LOI）均用于表征。与纯环氧树脂相比，含 0.75 wt.% rGO 的生物纳米复合材料的力学性能提高了 43.97%，压缩强度提高了 58.08%，拉伸强度提高了 39.84%，冲击能量提高了 47.05%，邵氏硬度提高了 21.26%。与纯环氧树脂相比，含有 0.75 wt.% rGO 的生物纳米复合材料在 550°C 时的热稳定性没有受到影响，残余质量为 44.71%。固化后的生物混合环氧树脂的燃烧率比环氧树脂低 23.38%，而且燃烧速度较慢。

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来源期刊

Journal of Reinforced Plastics and Composites 工程技术-材料科学：复合

CiteScore

5.40

自引率

6.50%

发文量

审稿时长

1.3 months

期刊介绍： The Journal of Reinforced Plastics and Composites is a fully peer-reviewed international journal that publishes original research and review articles on a broad range of today''s reinforced plastics and composites including areas in: Constituent materials: matrix materials, reinforcements and coatings. Properties and performance: The results of testing, predictive models, and in-service evaluation of a wide range of materials are published, providing the reader with extensive properties data for reference. Analysis and design: Frequency reports on these subjects inform the reader of analytical techniques, design processes and the many design options available in materials composition. Processing and fabrication: There is increased interest among materials engineers in cost-effective processing. Applications: Reports on new materials R&D are often related to the service requirements of specific application areas, such as automotive, marine, construction and aviation. Reports on special topics are regularly included such as recycling, environmental effects, novel materials, computer-aided design, predictive modelling, and "smart" composite materials. "The articles in the Journal of Reinforced Plastics and Products are must reading for engineers in industry and for researchers working on leading edge problems" Professor Emeritus Stephen W Tsai National Sun Yat-sen University, Taiwan This journal is a member of the Committee on Publication Ethics (COPE).