Preparation of nanosilver/graphene loaded polyester fabric and structure and properties thereof
Graphene oxide(GO)was loaded onto alkali-reduced polyester fabric surface by dipping-drying method,followed by self-assembly of silver(Ag)nanoparticles to produce a nano-Ag/graphene loaded polyester fabric with fairly good electrothermal property.The influence of the dipping times in GO aqueous dispersion,sodium citrate concentration and silver nitrate concentra-tion on the electrothermal property of the nanosilver/graphene loaded PET fabric was investigated.The structure,thermal proper-ty and mechanical properties of the fabric were characterized.The results showed that the preparation conditions of nano-Ag/gra-phene loaded polyester fabric were optimized as follows:5 dipping cycles in GO aqueous dispersion,a sodium citrate concentra-tion of 0.1 mol/L and a silver nitrate concentration of 0.1 mol/L;GO and Ag+ were reduced to graphene and nano-Ag to form dense and complete high-purity nano-Ag on the surface of the fabric during the preparation process of nano-Ag/graphene-loaded polyester fabric;the nano-Ag/graphene loaded polyester fabric had better thermal stability,and comparable breaking strength as compared with the original polyester fabric;and the surface heating temperature of the nano-Ag/graphene loaded polyester fabric reached 113℃when subjected to a voltage of 3 V for 60 s,showing excellent electrothermal properties.
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