The paper considers the problems of the development of conductive printing compositions for elastic substrates, a key element of an innovative flexible and stretchable electronics, as well as the basis for creating "smart clothes". It is noted that, from the point of view of the printing process, elastic materials can be divided into two groups: impermeable for printing composition and textile cloths having a porous, ink-permeable structure. To obtain conductive paths on impermeable and non-absorbent materials, a two-phase system of solvents and surfactants has been developed, which allows forming a surface conductive zone enriched with silver nanoparticles inside the printed layer. This provides an increase in conductivity without increasing the proportion of the conductive component and achieves good elasticity of the printed path due to the formation of a layer of almost pure elastomer. For woven textiles, a technology has been developed for applying conductive paths using a high-penetrating solvent and a two-stage drying mode, which provides deep impregnation of individual structural elements of the fabric without binding them and filling cavities. The obtained indicators of the surface resistance of conductive paths are comparable with the known analogues and surpass them in mechanical and operational properties. The developed printed compositions allow to create of EMG electrodes, RFID tags and antennas integrated directly into the clothing elements.


Разработка: студия Green Art