Abstract:

During deposition forming fine conductive circuit on fabric surface, micro-droplet jet printing droplets collision and penetration process on fabric surface are determined to premise to form a high quality conductive circuit. Using experimental research methods, under the controlled injection condition of the injection system, the dynamic peocess of the droplets collision, deposition and penetration on the fabric surface were captured and studied. The results show that droplets collision on the fabric substrate surface is similar to the solid substrate, and penetrantion phenomenon almost does not occur. As the effect of capillary pressure difference, different fabrics in different periods have penetration rate increasing sharply, rapid wicking phenomenon appears. The small the thread count, the more obvious wicking effect. Droplets diffusion shapes on the fabric surface are determined by the structure of the fabric. The area of diffusion is related to fabric wettability, and it decreaes with weakened wettablity.

Key words: conductive circuit, electronic intelligent textiles, micro-droplet, fabric surface, deposition, jet printing, wettability