Abstract：
As part of the work, innovative polymer composites dedicated to 3D printing applications were developed. For this purpose, the influence of modified fillers, such as silica modified with alumina, bentonite modified with quaternary ammonium salt, and hybrid filler lignin/silicon dioxide, on the functional properties of composites based on glycol-modified poly(ethylene terephthalate) (PET-G) was investigated. In the first part of the work, using the proprietary technological line, filaments from unfilled polymer and its composites were obtained, which contained modified fillers in an amount from 1.5% to 3.0% by weight. The fittings for the testing of functional properties were obtained using the 3D printing technique in the Melted and Extruded Manufacturing (MEM) technology and the injection molding technique. In a later part of the work, rheological properties such as mass melt flow rate (MFR) and viscosity, and mechanical properties such as Rockwell hardness, Charpy impact strength, and static tensile strength with Young\'s modulus were presented. The structure of the obtained composites was also described and determined using scanning electron microscopy with an attachment for the microanalysis of chemical composition (SEM/EDS) and the atomic force microscope (AFM). The correct dispersion of the fillers in the polymer matrix was confirmed by wide-angle X-ray scattering analysis (WAXS). In turn, the physicochemical properties were presented on the basis of the research results: thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and Fourier transform infrared spectroscopy (FT-IR). On the basis of the obtained results, it was found that both the amount and the type of fillers used significantly affected the functional properties of the tested composites.
摘要：
作为工作的一部分,开发了专用于3D打印应用的创新聚合物复合材料。为此,改性填料的影响，如用氧化铝改性的二氧化硅，用季铵盐改性的膨润土，和混合填料木质素/二氧化硅，研究了基于乙二醇改性的聚对苯二甲酸乙二醇酯（PET-G）复合材料的功能性能。在工作的第一部分，使用专有技术线，获得来自未填充聚合物及其复合材料的长丝，其包含1.5重量%至3.0重量%的量的改性填料。使用熔融和挤出制造（MEM）技术和注塑成型技术中的3D打印技术获得了用于功能性能测试的配件。在工作的后期，流变性能，如质量熔体流动速率(MFR)和粘度，以及洛氏硬度等机械性能，夏比冲击强度,给出了静态拉伸强度与杨氏模量的关系。还描述了所获得的复合材料的结构，并使用扫描电子显微镜进行了化学组成的显微分析（SEM/EDS）和原子力显微镜（AFM）。通过广角X射线散射分析(WAXS)确认填料在聚合物基质中的正确分散。反过来,在研究结果的基础上提出了物理化学性质:热重分析(TGA),差示扫描量热法(DSC),傅里叶变换红外光谱(FT-IR)。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所测试复合材料的功能性能。
