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Thermal and mechanical performance of unidirectional composites from bamboo fibers with varying volume fractions

In this work, a simple hand lay?up technique was employed to fabricate bamboo fiber reinforced epoxy resin composites, and subsequently composites with different fiber volume fractions (0%, 30%, 50%, and 70%) were prepared. To investigate the composite thermal properties, differential scanning calorimetry (DSC), thermogravimetric (TG) analysis, and dynamic mechanical analysis (DMA) were used. DSC demonstrates a decrease of glass transition temperature when fibers are incorporated into epoxy resin. TG results reveal that the degradation temperature increases with increasing the fiber content, and then a better thermal stability is achieved. The thermal results indicate that bamboo fibers provide a good resistance for heat insulation, suppressing the epoxy thermal decomposition. DMA shows that both storage modulus and loss modulus increase with increasing the fiber volume fraction in the temperature range of 30–200°C. Tensile tests and scanning electron microscopy (SEM) were also conducted on the specimens to investigate the material mechanical behavior. Compared with epoxy resin, the composites incorporated with bamboo fibers exhibit an improved tensile strength and modulus. The detailed analysis reveals that bamboo fibers have a positive effect on the thermo?mechanical properties of epoxy resin, providing a feasibility to using natural composites in a specific construction. POLYM. COMPOS., 2019. © 2019 Society of Plastics Engineers

» Author: Mengqing Yang, Fang Wang, Shujue Zhou, Zhisong Lu, Siyan Ran, Lu Li, Jiaxing Shao

» Reference: doi:10.1002/pc.25253

» Publication Date: 05/03/2019

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This project has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement n° [605658].

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