Due to the extremely strong surface activity of nano TiO2, it is easy to form large-sized agglomerates, which affects the practical application. Therefore, it can be modified from the aspects of improving the photocatalytic degradation efficiency of TiO2, changing the dielectric constant and surface activity of TiO2. There are two ways of combining surfactants with TiO2: one is physical adsorption. When the hydrophilic polar groups of surfactants are combined with the surface of TiO2, their lipophilic non-polar groups can be combined with external organic matter. , so that the organic matter enters the larger size agglomerates, thereby dispersing TiO2; the other is chemical adsorption, the surfactant is combined with the hydroxyl group on the surface of TiO2, thereby enhancing the affinity of TiO2 and organic matter.

Using butyl titanate and ethanol as titanium sources, the nano-TiO2 finishing agent was prepared by sol-gel method, and the cotton fabric was padding and finishing. The finished cotton fabric has durable UV resistance, improved breaking strength, and no change in air permeability. big.
Using butyl titanate, iodic acid and nitric acid as raw materials (the molar ratio of iodine to titanium is 1:10), the nano-I-TiO2 sol is prepared under the condition of 15~30C, and the cotton fabric is treated with its aqueous solution. The UPF value of the fabric is higher than 120, and it has good antibacterial properties. Using butyl titanate as raw material to prepare nano-TiO2 sol, the UV protection, wrinkle recovery and whiteness of cotton fabrics after finishing were significantly improved.
The thermal insulation coating was prepared with TiO2 as the raw material, and the coating was applied to the cotton fabric to form a dense polymer film with near-infrared reflection function, which significantly enhanced the thermal insulation performance of the fabric. Rare earth ion (Tm) doped TiO2 sol was prepared by sol-gel method, and the cotton fabrics finished with it had durable self-cleaning function, and the degradation rate of dirt reached 82% after 20 times of washing.
The application of nanotechnology in the textile industry is mainly reflected in the preparation of nanoparticles and how to use the prepared nanoparticles to manufacture textile products with special functions. Only by combining the nanoparticles with special functions with the textile raw materials, the nanoparticles can be stably and evenly distributed on the surface of the textile raw materials, without oxidation, agglomeration, or falling off, and made with special functions under the appropriate textile process. Only the textiles can truly realize the application of nanotechnology in the textile industry.