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Abstract：
As part of the present work, polymer composites used in 3D printing technology, especially in Melted and Extruded Manufacturing (MEM) technology, were obtained. The influence of modified fillers such as alumina modified silica, quaternary ammonium bentonite, lignin/silicon dioxide hybrid filler and unmodified multiwalled carbon nanotubes on the properties of polycarbonate (PC) composites was investigated. In the first part of the work, the polymer and its composites containing 0.5-3 wt.% filler were used to obtain a filament using the proprietary technological line. The moldings for testing functional properties were obtained with the use of 3D printing and injection molding techniques. In the next part of the work, the rheological properties-mass flow rate (MFR) and mechanical properties-Rockwell hardness, Charpy impact strength and static tensile strength with Young\'s modulus were examined. The structure of the obtained composites was also described and determined using scanning electron microscopy (SEM). The porosity, roughness and dimensional stability of samples obtained by 3D printing were also determined. On the other hand, the physicochemical properties were presented on the basis of the research results using thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), wide angle X-ray scattering analysis (WAXS) and Fourier Transform infrared spectroscopy (FT-IR). Additionally, the electrical conductivity of the obtained composites was investigated. On the basis of the obtained results, it was found that both the amount and the type of filler significantly affected the functional properties of the composites tested in the study.
摘要：
作为目前工作的一部分,用于3D打印技术的聚合物复合材料，特别是在熔化和挤压制造(MEM)技术中，已获得。改性填料如氧化铝改性二氧化硅的影响，季铵膨润土，研究了木质素/二氧化硅杂化填料和未改性多壁碳纳米管对聚碳酸酯(PC)复合材料性能的影响。在工作的第一部分，聚合物及其复合材料含有0.5-3wt。使用专有技术线使用%的填料来获得长丝。使用3D打印和注塑技术获得用于测试功能特性的模制品。在工作的下一部分，流变性能-质量流量（MFR）和机械性能-洛氏硬度，夏比冲击强度和静态拉伸强度与杨氏模量进行了检查。还使用扫描电子显微镜（SEM）描述并确定了所得复合材料的结构。孔隙度，还确定了通过3D打印获得的样品的粗糙度和尺寸稳定性。另一方面,根据热重分析（TGA）的研究结果，差示扫描量热法(DSC),广角X射线散射分析(WAXS)和傅里叶变换红外光谱(FT-IR)。此外,研究了所得复合材料的导电性。在得到的结果的基础上,研究发现，填料的用量和类型都会显著影响研究中测试的复合材料的功能性能。
