A filter film for purifying organic pollutants in indoor air and preparation method thereof

Abstract

The invention relates to the technical field of purifying of indoor air, in particular to a filtering rubber film for purifying organic pollutants in indoor air and a preparation method. The preparation method comprises the following steps of (1) adding glycidyl methacrylate, a crosslinking agent and an initiator into an organic solvent, stirring and mixing, adding a surfactant, and adding a soluble sulfate solution, so as to form an emulsion; (2) adding a nonmetallic ore adsorbent, negative ion powder, far-infrared powder and nanometer silicon dioxide into the emulsion, so as to obtain a mixture 1; (3) mixing the mixture 1 in step (1) and gel material, so as to obtain sol; (4) spraying the sol onto a nonwoven cloth, so as to obtain the filtering rubber film. The filtering rubber film forpurifying the volatile organic pollutants in the indoor air has the advantage that the adsorbing matters in the filtering rubber film are mutually cooperated, so as to adsorb and clear the volatile organic pollutants in the indoor air, and prevent the re-volatizing of the adsorbed organic pollutants.

Description

technical field [0001] The invention relates to the technical field of indoor air purification, in particular to a filter film for purifying organic pollutants in indoor air and a preparation method thereof. Background technique [0002] With the improvement of living standards, people have higher and higher requirements for improving living environment and air quality. People need a fresh, clean and hygienic living environment. Indoor air pollution is a growing concern. These pollutants are: formaldehyde, benzene, ammonia, radon, aromatic hydrocarbons, perchloroethylene, p-dichlorobenzene, chlorine, carbon monoxide, hydrogen sulfide, organic amines, mercaptans, sulfides. These odors from living and decoration materials not only affect people's mood, but also threaten people's health. At the same time, there are various pathogenic microorganisms in the air. [0003] At present, the treatment methods for indoor air pollution include filtration method, ozone purification me...

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Problems solved by technology

The material and its preparation method have the following disadvantages: first, the process is complicated and the equipment investment is large; second, it needs to be molded under high temperature and pressure, which consumes a lot of energy, has a long production cycle, and high production cost; third, the high temperature molding changes the The pore structure of activated carbon reduces the adsorption capacity; the fourth, the binder used in the molding is mesophase pitch (ie tar), and the mesophase pitch will produce toxic and harmful gases at high temperatures, which will affect the health of workers; fifth, the The molding speed of the material is slow during the preparation process; sixth, the prepared activated carbon material has poor mechanical properties, so it cannot be used in the field of high mechanical performance requirements, and is only suitable for the production of handicrafts that do not require high mechanical properties.

However, the flue gas filtration catalytic material made of sepiolite cannot be self-cleaning, and the adsorbed colloid and sol compound particles adhere to the surface of the catalyzed filter medium, which affects the continuation of the adsorption process and reduces the overall efficiency. The adsorption capacity and adsorption efficiency also decrease with the

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