Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (12): 81-86.doi: 10.13475/j.fzxb.20200307106

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Research on forming process of bulge at start of jet printing conductive circuit on fabric surfaces

XIAO Yuan1,2(), WANG Pan1, ZHANG Wei1, ZHANG Chengkun1   

  1. 1. School of Mechanical and Electrical Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi 710048, China
    2. Xi'an Key Laboratory of Modern Intelligent Textile Equipment, Xi'an Polytechnic University, Xi'an, Shaanxi 710600, China
  • Received:2020-03-27 Revised:2020-08-30 Online:2020-12-15 Published:2020-12-23

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Abstract:

In order to improve the forming quality of the conductive circuit on a fabric surface printed by the microdroplet jet printing technique, a high-speed camera was used to capture the process of droplet-jet printing conductive circuit in view of the bulged deposition lines at the start. The dynamic changes of left and right contact angles during the fusion oscillation between droplet, the fusion of droplet with the circuits and the process of transporting liquid to the starting of the line were studied according to the bulge elimination scheme. The results show that during the oscillation process of droplets coalescence, the oscillation trend towards the starting end is always greater than the other end, causing continuous expansion of the substrate wetting area at start of the printing circuit. After the droplets contact the circuit, part of the liquid wets the substrate to extend the length of the circuit, and the rest of the liquid is transported to the starting of the circuit at a constant speed to form a bulge. The surface of the fabric moistened with the ascorbic acid solution eliminates the bulging at the start of the forming circuit, leading to formation of expected uniform dimension of the deposited lines.

Key words: intelligent textile, microdroplet jetting, conductive circuit, deposition formation, bulge at start

CLC Number: 

  • TH16

Fig.1

Pneumatic droplet-jet printing deposition system"

Fig.2

Droplet coalescence process at start of circuit"

Fig.3

Schematic diagram of mass center position and substrate wetting area"

Fig.4

Left and right contact angle measurement diagram"

Fig.5

Left and right contact angle changes at droplet coalescence process"

Fig.6

Process of microdrop jet printing on a fabric"

Fig.7

Schematic diagram of circuit surface profile measurement"

Fig.8

Change process of x1, x2, x3 point profile in circuit with time"

Fig.9

Time for first reach maximl height of each position on circuit"

Fig.10

SEM image (a) and EDS diagram (b) of shaped circuit"

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