PDF(Pubmed)
Abstract：
Additive manufacturing is still the fastest-developing technology in the modern world. Three-dimensional printing has become popular due to the method\'s numerous advantages, such as its short time and low cost, compared to conventional methods such as injection molding. Therefore, the demand for new materials and material systems that will be characterized by the desired functional properties is clearly growing. As part of this work, work was carried out on the development and preparation of new polymer composites dedicated to 3D printing applications, especially in FDM/FFF/MEM technologies. The influence of the content and amount of fillers, such as silica modified with alumina (S) and bentonite modified with a quaternary ammonium salt (B), on the functional properties of a commercially available fiber made of traditional plastic, such as polycarbonate, obtained in the form of a filament (PCF), was determined. It was found that the addition of B significantly increased the fluidity of the polymer, the introduction of a filler in the amount of 1.5% allowed to obtain a result that was 6% higher compared to PCF (16.8 g/10 min), while the amount of 3% was 20% higher. The obtained mass melt flow rate (MFR) results were confirmed by determining the viscosity of the produced polymer composites. Satisfactory results of mechanical properties were obtained, including the following: it was found that the introduced modified fillers increased the elasticity of the material. The introduction of modified silica resulted in a reduction in Young\'s modulus by 10.02% at the content of 0.5% S and at 1% S by 8.64% compared to the polymer. The introduced modified filler S significantly increased the thermostability of polycarbonate (T5% equal to 449 °C) by 23 °C for PCF/0.5% S and 14 °C for PCF/1% S, respectively. The SEM and WAXS results confirmed the appropriate dispersion of the fillers in the polymer matrix, which indicates well-selected conditions for the homogenization process of the components and the subsequent production of samples. Detailed characterization of the influence of selected fillers on the functional properties of the polymer matrix-polycarbonate allowed for an increase in the range of polymer composites and their use in rapid prototyping technologies, as well as supplementing the literature on databases regarding the characteristics of the obtained materials.
摘要：
增材制造仍然是当今世界发展最快的技术。三维打印由于其众多的优点而变得流行,如时间短、成本低，与传统方法如注塑成型相比。因此,对以所需功能特性为特征的新材料和材料体系的需求正在明显增长。作为这项工作的一部分,致力于开发和制备专用于3D打印应用的新型聚合物复合材料，特别是在FDM/FFF/MEM技术。填料的含量和用量的影响，如用氧化铝(S)改性的二氧化硅和用季铵盐(B)改性的膨润土，关于由传统塑料制成的市售纤维的功能特性，如聚碳酸酯，以细丝(PCF)的形式获得，已确定。发现B的添加显着增加了聚合物的流动性，以1.5%的量引入填料允许获得比PCF(16.8g/10min)高6%的结果,而3%的金额高出20%。所获得的质量熔体流动速率(MFR)结果通过测定所产生的聚合物复合材料的粘度来确认。获得了令人满意的力学性能结果，主要包括:发现引入的改性填料增加了材料的弹性。与聚合物相比,引入改性二氧化硅导致在0.5%S和1%S含量下杨氏模量降低10.02%,降低8.64%。引入的改性填料S显着提高了聚碳酸酯的热稳定性（T5%等于449°C）对于PCF/0.5%S为23°C，对于PCF/1%S为14°C，分别。SEM和WAXS结果证实了填料在聚合物基体中的适当分散,这表明了用于组分的均质化过程和随后的样品生产的良好选择的条件。详细表征所选填料对聚合物基质-聚碳酸酯的功能特性的影响，从而增加了聚合物复合材料的范围及其在快速成型技术中的用途，以及补充有关所获得材料特征的数据库文献。
