Research On Finishing Process And Antistatic Property Of PET Fabric With Nano-ATO

PET fabric is favored by people for its good wearing properties and extensively applied to the fields of garment, ornament etc. However, the surface specific resistance (SSR) of PET fabric is as high as 1014?, which makes PET fabric has serious static electricity effect. The purpose of this paper is to improve the antistatic property of PET fabric by finishing with conductive nanoparticles antimony-doped tin oxide (ATO).The paper studied the influence of dispersant's category, dosage and pH value of solution to the dispersion property of nano-ATO. The stability of dispersed solution was characterized by using sedimentation volume experiment. The dispersion property of nano-ATO was characterized by Laser Size Analyzer and TEM. The results showed that when pH value of solution was 8-9, the stability of dispersed solution was superior to pH value 6-7. NDZ-311W had better dispersion property than other dispersants, and the dispersion property upgraded firstly and then degraded as the dosage of dispersant increasing. The optimum amount of NDZ-311W was 2% (relative to the amount of ATO).In the paper, orthogonal experiments were adopted to study the antistatic functional finishing of PET fabric with nano-ATO. The results showed that the surface specific resistance of finished PET fabric was highly significantly influenced by nano-powder concentration, significantly influenced by adhesive concentration, less significantly influenced by pick-up. The optimal finishing conditions were nano-ATO concentration 100g/L, adhesive concentration 50g/L, and pick-up 120%. Finished at the optimal finishing conditions, the SSR of PET fabric was as low as 9.28×109?. After being washed 50 times, the SSR kept 7.3×1010?, which showed good washing resistance. The breaking strength and the breaking elongation both of warp and weft slightly descended, wrinkle recovery angle hasn't changed much, bending-resistance length, static drape coefficient and dynamic drape coefficient improved, and permeability descended a little. The experiment used nano-ATO powder and surfactant TM to finish PET fabric respectively, and then compared their antistatic properties in low humidity environment. The results showed that the PET fabric finished by surfactant TM had higher dependence on humidity environment. It belonged to moisture absorption conductive and ionic conductive mechanism. The PET fabric finished by nano-ATO powder showed the independence on humidity environment, and it belonged to electronic conductive mechanism. At the same time, the author used XPS to analyze the surface elemental compositions and chemical valence of the PET fabric finished by nano-ATO powder. It also proved that the mechanism of nano-ATO powder was electron conduction.