Abstract

Acrylonitrile butadiene styrene (ABS) nanocomposites reinforced with multi-walled carbon nanotubes (MWCNTs) were prepared by melt blending and then extruded in filaments for the fused deposition modeling (FDM) process. The structure and properties of the FDM printed specimens were investigated by scanning electron microscopy, Raman spectroscopy, tensile testing, and dynamic mechanical analysis. The results showed that MWCNTs were evenly dispersed in the styrene-acrylonitrile (SAN) phase of the ABS matrix and had strong interactions with the SAN, which resulted in improvements of the tensile strength and modulus of the printed specimens. The tensile strength and modulus of the specimen with 8 wt.% MWCNTs reached 52.1 and 2727.2 MPa, which was 29% and 40% higher than those of the ABS specimens, respectively. Furthermore, the addition of MWCNTs improved the storage modulus (E′), glass transition temperature (T_g) and the thermal stability properties of the ABS specimens.

摘要

通过熔融共混制备由多壁碳纳米管（MWCNT）增强的丙烯腈-丁二烯-苯乙烯（ABS）纳米复合材料，然后将其挤出成细丝以进行熔融沉积建模（FDM）工艺。通过扫描电子显微镜，拉曼光谱，拉伸试验和动态力学分析研究了FDM印刷样品的结构和性能。结果表明，MWCNTs均匀地分散在ABS基质的苯乙烯-丙烯腈（SAN）相中，并且与SAN有很强的相互作用，从而改善了印刷样品的拉伸强度和模量。MWCNTs为8 wt％时，样品的拉伸强度和模量分别达到52.1和2727.2 MPa，分别比ABS样品高29％和40％。此外，E '），玻璃化转变温度（T _g）和ABS样品的热稳定性能。