The natural fibre-reinforced polymeric composites attract the manufacturing industries due to their recyclability, cost-effectiveness and eco-friendly nature. The natural hybrid reinforced polymeric (HNRP) composite overcomes the limitations in mechanical properties of the mono-natural fibre-reinforced composites. In this research work, the effect of barium sulphate ( $$\hbox {BaSO}_{{4}}$$ BaSO 4 ) on the mechanical characterization of HNRP (aloevera/flax/barium sulphate) composites was examined as per ASTM standard. $$\hbox {BaSO}_{{4}}$$ BaSO 4 is preferred as a filler based on the absence of self-motion, high density and high melting point (1580 $$^{\circ }$$ ∘ C). The thermal stability of the HNRP composite was determined by thermogravimetric analysis (Model: TG/DTA 6200). The water absorption and dynamic mechanical properties of the HNRP composites were estimated. The fractography images were analysed to recognize the fractured surface morphology using a scanning electron microscope. The HNRP5 composite has the maximum tensile strength of 34.72 MPa, predominantly based on the interlocking of the flax fibre and plasticity of the composite improved by the influence of $$\hbox {BaSO}_{{4}}$$ BaSO 4 . The impact strength decreased noticeably with the addition of barium sulphate in the composite. The weight reduction of around 7–9% was observed in the temperature range of 100–200 $$^{\circ }$$ ∘ C. The mono-composites (HNRP1&2) absorbed, respectively, 4.8 and 3.5% of moisture; with the addition of $$\hbox {BaSO}_{{4}}$$ BaSO 4 , the same combination absorbed 4.2 and 3.2% of water content, which was due to the low water absorption capability of $$\hbox {BaSO}_{4}$$ BaSO 4 . The storage modulus of the HNRP5 composite has maximum magnitude in the glassy region and minimum in the rubber region.

中文翻译：

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硫酸钡对编织芦荟/亚麻混合复合材料的力学、DMA 和热性能的影响

天然纤维增强聚合物复合材料因其可回收性、成本效益和生态友好性而吸引了制造业。天然混合增强聚合物 (HNRP) 复合材料克服了单天然纤维增强复合材料在机械性能方面的局限性。在这项研究工作中，根据 ASTM 标准检查了硫酸钡 ( $$\hbox {BaSO}_{{4}}$$ BaSO 4 ) 对 HNRP（芦荟/亚麻/硫酸钡）复合材料力学特性的影响. $$\hbox {BaSO}_{{4}}$$ BaSO 4 是优选的填料，因为它没有自运动、高密度和高熔点（1580 $$^{\circ }$$ ∘ C ）。HNRP 复合材料的热稳定性通过热重分析（型号：TG/DTA 6200）确定。估计了 HNRP 复合材料的吸水率和动态机械性能。使用扫描电子显微镜分析断口图像以识别断口形貌。HNRP5 复合材料的最大拉伸强度为 34.72 MPa，主要是基于亚麻纤维的互锁和复合材料的塑性受到 $$\hbox {BaSO}_{{4}}$$ BaSO 4 的影响。随着复合材料中硫酸钡的加入，冲击强度显着降低。在 100-200 $$^{\circ }$$ ∘ C 的温度范围内观察到重量减少了大约 7-9%。单复合材料 (HNRP1&2) 分别吸收了 4.8% 和 3.5% 的水分；添加 $$\hbox {BaSO}_{{4}}$$ BaSO 4 ，相同的组合吸收了 4.2% 和 3.2% 的水含量，这是由于$$\hbox {BaSO}_{4}$$ BaSO 4 的吸水能力低。HNRP5 复合材料的储能模量在玻璃区最大，在橡胶区最小。