Preparation And Properties Of Infrared Conductive Cotton

The thesis work focused on preparation technology of conductive cottonfabric, inwhich a certain proportion of the conductive agent (graphite and acetylene black)and binder (PTFE (P) and CMC (C)) were mixed into a slurry, then the slurry wascoated on a cotton cloth and dried to obtain a resultant conductive fabric product. First,the effect of the ratio of graphite to acetylene black as a conductive agent onconductivity of conductive fabric was investigated.It was found a series of conductivefabric with different electrical resistance can be achieved by adjusting the mass ratioof conductivity agent and adhension agent. When the graphite,acetylene black andbinder mass ratio was fixed at5:1.2:20, the issue of powder-coming-off wassignificantly alleviated and the electrical resistance was reduced to167Ω. Stirringtime, wetting time and mass ratio of conductive agent to binder agent were used asaffecting factors in a designed orthogonal experiment. The optimized result showedno powder come off the conductive fabric and its electrical resistance decreased to973Ω. Secondly, when the mass ratio of conductivity agent to binder reachedto5:0.5:40or2.5:0.875:40with CMC being replaced by P as a new binder, thepowder-coming-off issue was obviously improved and electrical resistance ofconductive fabric decreased remarkably to320Ω. As a result, under the acquiredoptimum condition with P&C being used as binder (mass ratio20:20), a betterconductive fabric with electrical resistance of64Ω was achieved and no powder wasobserved come off from fabric surface by adjusting graphite, acetylene black andP&C mass ratio to2.5:1:30. Thirdly, under orthogonally optimized reactionconditions, the flame retardant degree of heat-producing fabric can be adjustedthrough changing the amount of flame retardant (the mass ratio of graphite, acetyleneblack and P&C is2.5:1:30in the mother liquor). A minimum of mass fraction of1.58%of flame retardant was found to meet the flame retardant requirement. Finally,the far infrared radiation frequency and intensity of electricity-induced heat-producingfabric can be adjusted through changing the addition of far-infrared powder (the massratio of graphite, acetylene black,P&C and flame retardant powder is2.5:1:20:0.7inthe mother liquor). The best far-infrared effect was achieved at mass fraction of farinfrared powder, tourmaline, titanium dioxide, zirconium dioxide at2.65%、3.91%、 1.78%and1.78%. In this work, the conductivity agent can be uniformly attached ontothe electricity induced heating fabric, leading to a fabric with good conductivity,flame retardant ability and satisfied far-infrared radiation. The technique in this workis simple and lower-cost.