Abstract

Acrylonitrile–butadiene–styrene (ABS) nanocomposite filaments for 3D-printing were produced by melt compounding and extrusion. Two types of nanoadditives were employed: (a) graphene nanoplatelets (GnP) at various concentrations and (b) carbon nanotubes (CNTs). Fused filament fabrication (FFF) 3D printer was used for the fabrication of specimens, according to international standards to be employed for the determination of the tension and flexural mechanical properties of the specimens and the correlation with their microstructure. Nanocomposite filaments were also tested in tension, to evaluate the effect of 3D printing on the material. Moreover, the electrical properties of the specimens were also determined. As found out, a decrease in the tensile strength, the tensile modulus of elasticity, the flexural strength, and the flexural modulus of elasticity can be observed with the increase in the GnP concentration, in every case. ABS specimens filled with CNTs exhibited higher tensile and flexural strength and a more brittle behavior when compared to pure ABS and ABS with GnP. Regarding the electrical properties of the composites, it was found that dielectric constant increases by increasing GnP content, the specimens remaining at the same time rather nonconductive, even at a concentration of 10 wt.% in GnP. In contrast, ABS filled with CNTs at a concentration of 10% illustrated a large conductivity.

中文翻译：

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3D打印的丙烯腈-丁二烯-苯乙烯石墨烯和碳纳米复合材料的机械和电气性能研究

摘要

通过熔融混合和挤出生产用于3D打印的丙烯腈-丁二烯-苯乙烯（ABS）纳米复合长丝。使用两种类型的纳米添加剂：（a）各种浓度的石墨烯纳米片（GnP）和（b）碳纳米管（CNT）。根据国际标准，使用熔融长丝制造（FFF）3D打印机制造样品，以确定样品的拉伸和弯曲机械性能以及与它们的微观结构的关系。还测试了纳米复合材料丝的张力，以评估3D打印在材料上的效果。此外，还确定了样品的电性能。结果发现，抗拉强度，拉伸弹性模量，抗弯强度降低，在每种情况下，随着GnP浓度的增加，可以观察到弯曲弹性模量。与纯ABS和含GnP的ABS相比，填充CNT的ABS样品具有更高的拉伸强度和弯曲强度以及更脆的行为。关于复合物的电性能，发现介电常数通过增加GnP含量而增加，即使在GnP中的浓度为10wt。％，样品也同时保持非导电性。相比之下，以10％的浓度填充CNT的ABS表现出较大的导电性。关于复合物的电性能，发现介电常数通过增加GnP含量而增加，即使在GnP中的浓度为10wt。％，样品也同时保持非导电性。相比之下，以10％的浓度填充CNT的ABS表现出较大的导电性。关于复合物的电性能，发现介电常数通过增加GnP含量而增加，即使在GnP中的浓度为10wt。％，样品也同时保持非导电性。相比之下，以10％的浓度填充CNT的ABS表现出较大的导电性。