Method for preparing flexible air purifying material by low temperature in situ synthesis

Abstract

The invention relates to a method for preparing flexible air purifying material by low temperature in situ synthesis, which comprises the steps: (1) an acetone solution is used for ultrasonic cleaning a flexible base material which is dried, padded and processed in a modification solution, washed and dried; (2) the modified flexible base material is padded in an antioxidant finishing agent solution LZQ and baked; (3) tetra-isopropyl titanate is added into dehydrated alcohol; amine compound is added as a stabilizer; and then mixed liquor of dehydrated alcohol, acid and deionzed water is continuously added and evenly blended; (4) the flexible base material treated in the step (2) is soaked in sol in the step (3); and the soaked flexible material is dried, the sol remained on the surface of the material is removed and the material is dried; and (5) the dried flexible material is boiled for 2-4 hours in the 90-100 DEG C boiling water; and unsynthesized nanometer titanium dioxide on the surface is removed to obtain the flexible air purifying material. The air purifying function material has good air purifying effect; and the preparation technology is simple and easy to operate and suitable for industrial scale production.

Description

technical field [0001] The invention belongs to the field of preparation of air purification materials, in particular to a method for preparing flexible air purification materials by low-temperature in-situ synthesis. Background technique [0002] In recent years, with the rapid development of my country's economy and the improvement of people's lives, the decoration level of offices and residences is getting higher and higher. New building materials, especially chemical synthesis building materials, are widely used in high-end furniture and household appliances, and have entered the home and office. Spices, cosmetics, polishes, air fresheners, insect repellants, insecticides, detergents, etc. have also become indispensable supplies in people's lives. While people are enjoying the comfort and satisfaction brought by these products, they are constantly producing various pollutants and harmful substances, destroying indoor air quality (indoor air quality, IAQ). Building energ...

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Problems solved by technology

[0004] Therefore, the control of indoor air pollution, especially the removal of organic pollutants in indoor air, has become a research hotspot for scientific and technological workers at home and abroad. At present, the methods for removing indoor air pollutants mainly include: physical adsorption method, chemical neutralization method, photocatalytic method , air negative ion method, etc. However, the above methods have defects such as adsorption saturation, complicated manufacturing, high cost, and cannot be recycled. Considering that the flexible substrate (fiber material) as a carrier has a large surface area, easy processing and molding, enrichment of pollutants and dilution The decomposition product has special properties, and the photocatalyst is loaded on the flexible substrate to prepare the flexible air purification material. The current preparation methods are: padding method and coating method. These two methods exist that the photocatalyst is covered by the adhesive, and the agglomeration is serious , low catalytic efficiency, flexible substrates are prone to photooxidative degradation and other problems. Since the flexible substrates are not resistant to high temperatures, the deposition of photocatalysts on flexible substrates is limited, and then the use of crystal conversion methods. In order to solve the above problems, the present invention Directly arrange the anti-photooxidation protective layer on the flexible substrate, and then synthesize the photocatalyst in situ on the flexible substrate, realize the conversion of the photocatalyst crystal form in boiling water, and prepare the low temperature in situ synthesis flexible air purification material.

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