Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (12): 102-108.doi: 10.13475/j.fzxb.20211002307

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Ink-jet printed circuit of gallium-indium alloy liquid metal based on polyamide film

ZHAO Zhiwei1,2, WANG Zixi1,2, YANG Shiyu3, HU Yi1,2()   

  1. 1. Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
    2. Engineering Research Center for Eco-Dyeing and Finishing of Textiles,Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
    3. Zhejiang Technology Lixin Materials Co., Ltd., Shaoxing, Zhejiang 312030, China
  • Received:2021-10-13 Revised:2022-04-07 Online:2022-12-15 Published:2023-01-06
  • Contact: HU Yi E-mail:huyi-v@zstu.edu.cn

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Abstract:

In order to solve the problem that it is difficult to wet the substrate due to great surface tension of gallium-indium alloy(EGaIn) liquid metal (LM), a suitable surfactant was selected and a stable EGaIn electronic ink was fabricated by the probe ultrasonic method. The micro-morphology and surface element distribution of liquid metal nanospheres were characterized by scanning electron microscope, transmission electron microscope, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy (FT-IR) and X-ray energy dispersion spectroscopy, and the best preparation process was optimized. The patterned conductive circuit was successfully prepared on the polyamide filter film by ink-jet printing to test its electrical conductivity. The results show that when polyvinylpyrrolidone (PVP) is used as surfactant, PVP is added to 200 mg, ultrasonic time is longer than 30 min, the electronic ink shows excellent dispersion stability. The resistance of the patterned circuit after sintering reached lower than 150 Ω after printing more than 6 times, and a LED was lit successfully.

Key words: ink-jet printed, liquid metal, electronic ink, conductive circuit, flexible electronic, polyamide filter film

CLC Number: 

  • TS101.8

Fig.1

Physical diagram of one-day stability of inks with different surfactants at room temperature. (a) SDS;(b) NMP;(c) No addition of surfactant; (d) PVP"

Fig.2

Printing ink viscosity change diagram with different PVP addition under constant shear rate"

Fig.3

Average droplets size distribution of different ultrasonic time"

Fig.4

FT-IR spectra of PVP and LM ink"

Fig.5

TEM image of EGaIn droplets"

Fig.6

XPS spectra of LM ink.(a) Total spectra;(b) Ga1s spectra;(c) O1s spectra"

Fig.7

SEM image of printed patterns (a) and Ga element distribution image(b)"

Fig.8

Mechanical sintering SEM images(×10 000) and physical photos. (a) Physical photo before sintering;(b) SEM image before sintering;(c) Physical photo after sintering;(d) SEM image after sintering"

Fig.9

SEM images of EGaIn droplets with different printing times(×3 000). (a) Two times;(b) Four times;(c) Six times"

Fig.10

Resistance test photos of conductive circuit after sintering with different printing times. (a) Two times;(b) Four times;(c) Six times"

Fig.11

Physical application photos of conductive circuit for inkjet printing with different shapes. (a) Linear type; (b)Curved type; (c) Flexibility application"

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