3D printing of electrically conductive hybrid organic–inorganic composite materials
We present preparation, characterization, and 3D printing of electrically conductive acrylonitrile butadiene styrene (ABS) polymer. The conducting ABS prepared by doping carbon fibers (150 μm in length) at 200 °C by using a thermo-plasto mill, with different weight percentage (10–60 wt%) of carbon fibers in ABS polymer matrix. The conductivity was measured by four-point probe that determines percolation threshold occurs at 15 wt%. Conductivity of 0.067 S/m was observed at 50 wt%. Melt extrusion technique was employed in order to fabricate cylindrical filament with a diameter of 1.75 mm. A standard fused deposition modeling type printer (Makerbot) was used to print the developed filament. The developed ABS electrically conductive composite can be potentially used for various applications, such as 3D printing of wires, circuits, sensors, resistors, heaters, robotics, MEMS and active microfluidics devices.
Authors would like to thank Prof. Bungo Ochiai (Yamagata University), for his help and access to SEM, Prof. Masataka Sugimoto and Sathish K. Sukumaran (Yamagata University), for their help with Plasto mill. This study was partly supported by the Grant-in-Aid for Scientific Research (Category A, Project no. 17H01224) from the Japan Society for the Promotion of Science (JSPS), the Center Of Innovation (COI) program from the Japan Science and Technology Agency (JST), the Strategic Innovation Creation Project (SIP) from the New Energy and Industrial Technology Development Organization (NEDO) of Japan, and the Program on Open Innovation Platform with Enterprises, Research Institute and Academia (OPERA) from the JST.
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