Superfine glass fiber cotton felt for photocatalytic air purification and preparation method thereof

Abstract

The invention relates to a superfine glass fiber cotton felt for photocatalytic air purification and a preparation method thereof, and belongs to the technical field of functional composite materials.The superfine glass fiber cotton felt consists of the following components in percentage by mass: 83 to 92 weight percent of superfine glass fiber, 6 to 8 weight percent of photocatalytic nanoscale particles and 1 to 3 weight percent of bonding system. The invention also relates to a preparation method of the superfine glass fiber cotton felt for photocatalytic air purification. The preparation method comprises the following steps: uniformly atomizing and spraying turbid liquid containing photocatalytic nanoparticles and a bonding system on the surface of the superfine glass fiber prepared bya flame blowing method, and drying to obtain the superfine glass fiber cotton felt for photocatalytic air purification. Compared with a traditional glass fiber filter cotton felt, the superfine glassfiber cotton felt for photocatalytic air purification has the advantages that the function of eliminating bacteria and volatile organic compounds (TVOC) in air is added, the superfine glass fiber cotton felt is rapidly decomposed under visible light, the filtering efficiency is higher, the filtering resistance is lower, and the machining strength is better.

Description

technical field [0001] The invention belongs to the technical field of functional composite materials, and in particular relates to an ultrafine glass fiber felt for photocatalytic air purification and a preparation method thereof. Background technique [0002] With the development of economy and society, people are becoming more and more aware of the close relationship between air quality and health, but accompanied by the increasing concentration of gaseous substances, volatile substances (TVOC) and particulate matter in air pollutants, making The human body produces sub-health reactions and even threatens life safety, thus forcing people to pursue higher and higher air cleanliness in living, living and working environments. Due to the characteristics of small fiber diameter and pore size and high porosity, ultra-fine glass microfiber filter materials are widely used in the separation and filtration of particulate pollutants in the air, but they are powerless against bacte...

AI Technical Summary

Problems solved by technology

First of all, the air filter composite material formed by ultrafine glass fiber and binder has no filtering ability for bacteria and volatile organic compounds TVOC in the air, and can only physically intercept particulate pollutants in the air; secondly, ultrafine glass The composite superposition of fiber sheets and photocatalytic material sheets cannot realize the organic fusion of ultrafine glass fibers and photocatalytic nanoparticles, and cannot make the surface of each single glass fiber in the ultrafine glass fiber network structure evenly coated with photocatalytic nanoparticles. Particles, so that the photocatalytic performance and filtration performance of the prepared ultra-fine glass fiber mat cannot be guaranteed; then, the adhesive has not been treated with processing aids including coupling agents, water-repellent agents and curing agents, resulting in The combination of ultra-fine glass fiber and photocatalytic nanoparticles is poor, resulting in poor mechanical processing strength of the prepared ultra-fine glass fiber mat