“…The process of determining the optimal percentage of nanoclay using the solution blending method is explained elsewhere. 57 In brief, three different weight percentages of nanoclay (0.2, 0.4, and 0.8 wt.%) were added to the epoxy, and according to the results of tensile and 3-point bending tests, the optimal weight percentage of nanoclay (0.2 wt.%) was obtained. Then, the nanocomposite laminates containing optimal nanoclay contents were prepared by the VIP method in the second step.Figure 1.The nanoclay dispersion process in epoxy with solution blending methodology, determination of the optimal percentage of nanoclay in resin, and fabrication of laminated nanocomposite by VIP method.…”
Polymer matrix composites are vulnerable to low-velocity impact, although they have found many applications in high-tech industries. The main objective of this study is to improve compression after impact strength of the carbon/epoxy composites using nanoclay particles. All test samples were fabricated using a vacuum infusion process. The solution blending methodology was applied for better dispersion of the nanoparticles in the resin. The low-velocity impact response of the composite and nanocomposite laminates was investigated at various energy levels of 10, 15, and 20 J. To quantify the impact effect, the residual strength of the impacted specimens was experimentally measured under the compression test. In addition, the effect of nanoclay incorporation through the solution blending methodology on damage mechanisms was determined by the radiographic analyses and optical microscope method. The findings of this research showed a rise, up to 25.15% in the residual compressive strength, and a 7-fold increase in local buckling threshold stress of the carbon/epoxy/nanoclay specimens.
“…The process of determining the optimal percentage of nanoclay using the solution blending method is explained elsewhere. 57 In brief, three different weight percentages of nanoclay (0.2, 0.4, and 0.8 wt.%) were added to the epoxy, and according to the results of tensile and 3-point bending tests, the optimal weight percentage of nanoclay (0.2 wt.%) was obtained. Then, the nanocomposite laminates containing optimal nanoclay contents were prepared by the VIP method in the second step.Figure 1.The nanoclay dispersion process in epoxy with solution blending methodology, determination of the optimal percentage of nanoclay in resin, and fabrication of laminated nanocomposite by VIP method.…”
Polymer matrix composites are vulnerable to low-velocity impact, although they have found many applications in high-tech industries. The main objective of this study is to improve compression after impact strength of the carbon/epoxy composites using nanoclay particles. All test samples were fabricated using a vacuum infusion process. The solution blending methodology was applied for better dispersion of the nanoparticles in the resin. The low-velocity impact response of the composite and nanocomposite laminates was investigated at various energy levels of 10, 15, and 20 J. To quantify the impact effect, the residual strength of the impacted specimens was experimentally measured under the compression test. In addition, the effect of nanoclay incorporation through the solution blending methodology on damage mechanisms was determined by the radiographic analyses and optical microscope method. The findings of this research showed a rise, up to 25.15% in the residual compressive strength, and a 7-fold increase in local buckling threshold stress of the carbon/epoxy/nanoclay specimens.
“…Hasil pengujian varisai 0% mendapatkan nilai harga impact rata-rata 0,0256 selanjutnya nilai kekuatan impact tertinggi dihasilkan dari spesimen dengan variasi 15% clay dengan harga impact rata-rata sebesar 0,0595, dari hasil ini dapat diketahui penambahan clay meningkatkan sifat mekanik [6].…”
Nanoclay atau clay suatu material yang melimpah di sekitaran kita. Clay mempunyai tekstur berbentuk bubuk nama lain dari nanoclay disebut bubuk tanah liat. Objek penelitian berupa serat praksok yang dipilih karena melimpahnya sumber daya alam tersebut. Penelitian ini bertujuan untuk menganalisis dan mengetahui pengaruh penambahan clay 5%, 10%, 15%, terhadap kekuatan impact material komposit diperkuat serat praksok bermatriks epoxy. Spesimen matriks resin dibuat dengan standar ASTM D6110 dengan bahan resin epoksi. Hasil penelitian didapatkan kekuatan impact komposit dengan variasi 0% clay 0,0256(j/mm2), 5% clay 0,0282(j/mm2), 10% clay 0,0475(j/mm2), 15% clay yaitu 0,0595(j/mm2). Untuk hasil tertinggi pada pengujian impact terdapat pada variasi 15% clay di karenakan bertambahnya persentase clay yang lebih banyak dapat meningkatkan sifat mekanik seperti kekuatan tarik dan impact, pada hasil penelitian paling rendah adalah variasi 0% clay dikarenakan tanpa menggunakan clay. Bentuk patahan menunjukkan bahwa hasil pengujian impact 15% clay mengalami patahan ulet, karena ditandai adanya mekanisme fiber pull out yang mendominasi setiap spesimen hal ini yang membuat komposit diperkuat serat praksok memperlambat retak yang terjadi akibat beban impact. Dapat disimpulkan kekuatan impact pada material mengalami kenaikan disebabkan karena penambahan variasi clay dan fiber pull out mendominasi disetiap patahan.
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