为 3D 打印准备的挤出超高分子量聚乙烯 (UHMWPE) 纤维的表征

B. Arifvianto, Candra Irawan, S. Suyitno, U. Salim, M. Mahardika
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摘要

如今,熔融长丝制造(FFF)已成为一种流行的三维(3D)打印技术,用于制造具有定制和复杂形状设计的聚合物部件,包括生物医学植入物。然而,这种技术的使用往往受到可打印形成最终产品的聚合物材料数量有限的限制。尽管超高分子量聚乙烯(UHMWPE)具有优异的耐磨性,并被广泛用作关节假体的髋臼部件,但它却是市场上极少见的长丝材料之一。在这项研究中,利用挤出法制造用于 FFF 加工的超高分子量聚乙烯长丝进行了初步工作。研究人员测定了挤出温度、聚乙二醇(PEG)添加量和挤出机螺杆转速对挤出超高分子量聚乙烯长丝的物理、化学和机械性能的影响。傅立叶变换红外光谱显示,所使用的加工参数没有改变长丝的化学成分。拉伸测试结果表明,超高分子量聚乙烯长丝的最高拉伸强度可达 23.5 兆帕。
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Characterization of Extruded Ultra-High Molecular Weight Polyethylene (UHMWPE) Filament Prepared for 3D Printing
Fused filament fabrication (FFF) has nowadays become a popular 3-dimensional (3D) printing technique for the fabrication of polymeric components with customized and complex-shape design, including biomedical implants. However, the use of this technique is often constrained by the limited number of polymeric materials that can be printed to form the final product. Despite excellent wear resistance and widely used as the acetabular component of a joint prosthesis, ultra-high molecular weight polyethylene (UHMWPE) is among such the rarely-found filament material in the market. In this research, preliminary work to fabricate UHMWPE filament for the FFF processing is carried out by using extrusion. The influences of extrusion temperature, addition of polyethylene glycol (PEG), and rotational speed of the extruder’s screw on the physical, chemical, and mechanical properties of the extruded UHMWPE filament were determined. The result demonstrated no change in the chemical compositions of the filament due to the processing parameters applied, as noted from the FTIR spectra. The result of the tensile test showed that the highest tensile strength of UHMWPE filaments could reach 23.5 MPa.
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