This project belongs to the field of textile chemistry and dyeing and finishing technology. In recent years, the development and application of nanotechnology in functional textiles has attracted widespread attention. How to prepare nanooxide particles with good dispersion, easy growth control, and strong binding with fibers at low temperatures is whether they can be used in textiles. The key to application, but there have been no relevant reports on the successful development of processing technology and industrial production of nanocomposite multifunctional textiles.
Shanghai University of Engineering Technology cooperated with Shanghai Longtou Home Textile Co., Ltd. and Shanghai Automobile Carpet Factory Co., Ltd. to develop the processing and application of modified nano titanium dioxide in functional finishing of textiles based on technological inventions and innovations, integrating the advantages of scientific research and industrialization from various parties. Technology solves the problem of uniform dispersion of nanoparticles on fibers and strong combination with fibers, and initially realizes the industrial production of nano-composite multifunctional textile products.
This achievement has been funded by the Nano Project of Shanghai City Science and Technology Development Fund, the Scientific Research Innovation Project of Shanghai City Education Commission and the Scientific Research Project of Shanghai University of Engineering Technology, and has passed the appraisal and acceptance. The main innovations are:
(1) Anatase-type TiO2 hydrosol was prepared at low temperature under the conditions of excessive water system, and the TiO2 sol was innovatively crystallized at low temperature by steaming thermal crystallization treatment, obtaining a complete crystal form, high crystallinity and high catalytic activity. Nano-TiO2 powder or thin film. This low-temperature steaming and thermal crystallization treatment method does not require high-temperature sintering, and can be coated on substrates that are not resistant to high temperatures, thereby broadening the application field of nano-TiO2.
(2) By doping metal and non-metal ions into the lattice of nano-TiO2 prepared at low temperature or loading them on the surface of TiO2, defects can be introduced into TiO2 or the crystallinity can be changed, so that the band gap of TiO2 after doping becomes narrow, affects the recombination of photogenerated electrons and photogenerated holes, and can also stimulate it to produce photocatalytic ability under visible light conditions, broadening the photoresponse range of TiO2.
(3) By adopting a new steaming treatment method, the growth and hydrolysis reaction of TiO2 can be controlled without the presence of dispersants, so that its particles can be uniformly dispersed on the cotton fabric, which is not easy to aggregate, and the crystal strength is higher than that of traditional curing and hydrothermal finishing processes, and has a certain degree of firmness when combined with fiber. At the same time, based on different fiber and functional requirements, a feasible finishing process for modified nano titanium dioxide on textiles was developed, key technical parameters for industrialization were determined, and durable photocatalyst functional textiles were developed, which solved the degradation of photocatalytic textile products. The problem has provided a good mutual confirmation between the finished fabric properties, processing methods and actual production.

The nano-functional textiles developed in this project have been tested to meet the standards of international AATCC and national textile testing agencies. After expert technical appraisal and scientific and technological novelty search, this project is the first in China, is novel and practical, and has reached the international advanced level. The project's core technology has been authorized by 5 national invention patents, published more than 30 high-level papers, nearly 10 papers have been included in SCI and EI, trained 8 master's students, and won 2 gold medals in the Shanghai City Excellent Invention Selection Competition, 1 2012 Hong Kong Mulberry Textile Technology Award (sponsored by China Textile Engineering Society), etc.
The results of this project have been promoted and applied to a certain extent in Shanghai Longtou Home Textile Co., Ltd., Shanghai Automobile Carpet Factory Co., Ltd. and other enterprises. High-performance nano-photocatalyst composite multifunctional series of curtains, household bedding and car forming carpets, car mats, etc. have been developed. The design of the industrial production process has been initially completed, and industrial production capabilities can be formed on conventional process equipment.
In the past three years, the project has accumulated a total of nearly 14 million yuan in output value and more than 2.5 million yuan in new profits. The product quality meets user requirements, and customer feedback information is good. It has expanded the application field of textiles, increased the added value of products, and enhanced It has achieved considerable economic and social benefits.