Study On Functionalization Of Environment-friendly Upholstery Fabrics

stable nano-oxides dispersion system containing nano titanium dioxide coated by polymer as major functional components was prepared, in which there are other components such as deionized water, polyvinyl alcohol(PVA) and polymeric surfactant named CH-18 (trade name) as dispersant, polymer and so on. The microstructure of obtained dispersion system were characterized by means of transmission electron microscopy (TEM), and the properties of the system were tested by rotary viscometer, suspension-sedimentation method, freezing and thawing tester. The results suggested that at 60℃ rapid shearing for 40mins, the bin stability and the freeze-thaw stability of the disperse system are best while the formula is nano-oxide 13.90%, polyvinyl alcohol(PVA)as dispersant 1.28%, CH-18 as dispersant 2.65%, initiating agent 0.44%, polymer 5.40%. Nano-oxide dilution was prepared by means of diluting disperse system with tap water by ultrasonic acting for 10mins. The photos of TEM showed that nano-oxide was distributed symmetrically among polymer, and that the average particle diameter was between 20nm and 30nm. All of these suggested that the disperse of oxide was in a good situation.The nano-oxides dispersion system were coated onto a kinds of upholstery fabrics according to a certain of technique to form functional upholstery fabrics with bacteria resistant and cleaning toxic gas such as formaldehyde et al. Bacteria resistant and degradation formaldehyde of the functional upholstery fabrics were also researched. The results of SEM suggested that the distribution of nano-oxides powder on the surface of finishing fabrics was uniform. In order to test the bacteria resistant of the functional fabrics, the properties of bacteria resistant were took place with bacteriostasis ring to investigate the bacterium growth around the piece of functional upholstery fabrics. The result showed that this functional upholstery fabrics had excellent antibacterial activity toward Escherichia coli and Staphylococcus aureus. The degradation effects on formaldehyde in closed system under UV irradiation were measured by the INTERSCAN4160 series digital portable formaldehyde analyzer. The results showed that the remainings of degraded formaldehyde has come to the national standard of environment formaldehyde concentration(0.08ppm) without respect to initial concentration of formaldehyde.