Piezo-driven jet valve dispensing of carbon nanotube-loaded composites: optimisation and characterisation

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, COMPOSITES

Nanocomposites Pub Date : 2021-01-02 DOI:10.1080/20550324.2021.2004702

T. Genco, Max Linke, R. Lammering

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引用次数: 5

Abstract

Abstract A new class of single walled carbon nanotubes (SWCNT)/epoxy resin ink in dimethylacetamide is successfully printed using a piezo-driven jet valve dispensing system for the fabrication of flexible nanocomposites. The optimised ink prepared by solution mixing method with a viscosity (28.54 mPa⋅s), surface tension (31.3 mN/m), density (0.964 g/cm3), and 0.25 wt% SWCNT is obtained through design-of-experiments. The optimisation process is carried out focusing on the ink ejectability and the electrical properties of the resulting nanocomposites. An investigation of the electrical properties of the printed structures on glass and paper substrates is performed by analysing their sheet resistances. The resulting nanocomposite exhibits sheet resistances of 15 × 102 kΩ/sq and 0.11 kΩ/sq printed on glass and paper, respectively. Finally, the interlaminar fracture properties of the nanocomposites when integrated into glass fiber reinforced polymers are investigated. The median change of the energy release ratio GII,c is about 3%, with almost constant standard deviation. Graphical Abstract

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碳纳米管负载复合材料的压电驱动喷射阀点胶:优化和表征

摘要:采用压电驱动射流阀点胶系统成功打印了一类新型的单壁碳纳米管/环氧树脂二甲基乙酰胺油墨，用于制备柔性纳米复合材料。通过实验设计，通过溶液混合法制备出粘度为28.54 mPa⋅s、表面张力为31.3 mN/m、密度为0.964 g/cm3、SWCNT质量分数为0.25 wt%的优化油墨。优化过程的重点是油墨的可喷射性和所得到的纳米复合材料的电学性能。通过分析其片电阻，对玻璃和纸基板上印刷结构的电性能进行了研究。所得到的纳米复合材料在玻璃和纸上分别显示出15 × 102 kΩ/sq和0.11 kΩ/sq的片电阻。最后，研究了纳米复合材料与玻璃纤维增强聚合物结合后的层间断裂性能。能量释放比GII,c的中位数变化约为3%，标准差几乎不变。图形抽象

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来源期刊

Nanocomposites Multiple-

CiteScore

7.40

自引率

15.20%

发文量

审稿时长

16 weeks