Abstract
Kevlar fibre reinforced epoxy composites are extensively used for various applications. In this study, Kevlar fibres are used as reinforcement in the modified epoxy resin matrix. Epoxy resin is modified using polyetherimide (PEI). The content of polyetherimide in epoxy is derived up to 10 wt%. Mechanical properties improvement is observed around 7.5 wt% and 5 wt% of polyetherimide in blended epoxy as compare to pure epoxy. In the present work, Kevlar fibre in mat form is first introduced with epoxy resin. Then other samples were made by blending epoxy with different percentages of polyetherimide. Fabricated composites are subjected to various mechanical properties evaluation tests. Results exhibit an increase in strength values. Tensile, shear and impact strength is maximum for composite samples having 7.5 wt% PEI. Flexural strength is maximum for samples with 5 wt% PEI. DSC and TGA of samples are also done for material characterization of composites. During the TGA testing, the degradation of samples in the Nitrogen gas atmosphere at two different stages, 250–350 °C and 450–600 °C, are observed, where significant wt. loss has occurred. The DSC analysis of Epoxy resin and PEI-blended resin shows two different glass transitions at 90 °C and 220 °C, respectively.
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Rajpoot, A., Singh, V.P., Yadaw, S.B. (2019). Modelling, Fabrication and Characterization of Kevlar Reinforced Composite. In: Prasad, A., Gupta, S., Tyagi, R. (eds) Advances in Engineering Design . Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-6469-3_2
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DOI: https://doi.org/10.1007/978-981-13-6469-3_2
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