Vīndedze Elīna, Glaskova-Kuzmina Tatjana, Dejus Didzis, Jātnieks Jānis, Sevcik Scott, Bute Irina, Sevcenko Jevgenijs, Stankevich Stanislav, Gaidukovs Sergejs
AM Craft, Braslas 22D, LV-1035 Riga, Latvia.
Institute for Mechanics of Materials, University of Latvia, Jelgavas 3, LV-1004 Riga, Latvia.
Polymers (Basel). 2025 Jan 9;17(2):145. doi: 10.3390/polym17020145.
Despite the impressive properties of additively manufactured products, their inherent anisotropy is a crucial challenge for polymeric parts made via fused filament fabrication (FFF). This study compared the tensile, thermophysical, smoke density, and toxicity characteristics of Ultem 9085 (a blend of polyetherimide and polycarbonate) for samples printed in various orientations (X, Y, and Z). The results revealed that mechanical properties, such as elastic modulus and tensile strength, significantly differed from the Z printing orientation, particularly in the X and Y printing layer orientations. Thermomechanical analysis revealed that Ultem 9085 had high anisotropic effects in the coefficient of thermal expansion, indicating superior thermal properties along the printing orientation. The smoke density and toxicity test results proved that Ultem 9085 complies with aviation safety standards. Smoke density tests showed that all samples, regardless of print orientation or thickness, stayed well below the regulatory limit, making them suitable for aircraft interiors.
尽管增材制造产品具有令人印象深刻的性能，但其固有的各向异性对于通过熔丝制造（FFF）制成的聚合物部件来说是一个关键挑战。本研究比较了Ultem 9085（聚醚酰亚胺和聚碳酸酯的混合物）在不同取向（X、Y和Z）下打印的样品的拉伸、热物理、烟密度和毒性特性。结果表明，弹性模量和拉伸强度等机械性能在Z打印取向方面有显著差异，特别是在X和Y打印层取向。热机械分析表明，Ultem 9085在热膨胀系数方面具有较高的各向异性效应，表明沿打印取向具有优异的热性能。烟密度和毒性测试结果证明Ultem 9085符合航空安全标准。烟密度测试表明，所有样品，无论打印取向或厚度如何，均远低于监管限值，使其适用于飞机内饰。
