カーボンブラック／ジメチルシリコーンオイルによるMWCNT被覆導電繊維織物と金属ワイヤー間の接触抵抗低減

抄録

Textiles using multi-wall carbon nanotube (MWCNT)-coated conductive fibers are expected to be used for wearable applications as heaters with flexibility and light weight. Impregnating a low viscosity paste blend of a low concentration of carbon black (CB) in dimethyl silicone oil (SO), instead of indurative Ag paste, between the conductive textile and a metal wire having area of 5×130 mm, while retaining flexibility, resulted in an order of magnitude reduction of the electric contact resistance after two days. The remarkable reduction with time was found to be generated by a synergistic effect of a network of CB particles gradually induced by liquid SO flow at 30 °C and an increased CB concentration produced by slow penetration of SO into the surrounding textile.