Preparation method of filtering membrane used for industrial air filter

Abstract

The invention discloses a preparation method of a filtering membrane used for an industrial air filter. The preparation method of the filtering membrane includes the following steps that 1, ceramic adhesive is prepared; 2, a sodium carboxymethylcellulose solution is prepared; 3, a composite supporting body is prepared; 4, a ceramic fiber transition layer is prepared; 5, the filtering membrane is prepared. The preparation method is simple and easy to implement, the preparation technology has high anti-fake performance, the prepared filtering membrane is uniform in structure, and has good high temperature resistance, high pressure resistance and chemical stability, filtering pressure is reduced, and the service life is prolonged.

Description

technical field [0001] The invention belongs to the technical field of daily chemical filtration, and in particular relates to a preparation method of a filter membrane for an industrial air filter. Background technique [0002] Air is the guarantee for maintaining life. The air contains a large amount of harmful gases and fine suspended particles, which will cause serious harm to the respiratory tract, cardiovascular system and central nervous system of human respiratory immune function. Reducing the emission of suspended particles in the air is harmful to the environment. It is very important to protect and guarantee human health. At present, with the rapid development of industry, the human living environment is constantly being challenged, one of which is air pollution; at the same time, modern science and modern industry, especially electronics, precision instruments, metallurgy, etc. The development of industries such as aerospace, nuclear energy, and chemical industry...

AI Technical Summary

Problems solved by technology

[0003] Although traditional filter membranes have high filtration efficiency for particles above the micron level, it is difficult to effectively filter submicron particles. At the same time, the fiber filter membranes sold on the market generally cannot filter dust and oily particles at the same time. The main reason is that the filter membrane generally cannot achieve the effect of hydrophobic and oleophobic at the same time. Studies have shown that the filtration efficiency of the fiber filter membrane will increase significantly with the decrease of the fiber diameter. Therefore, reducing the fiber diameter has become an effective way to improve the fiber filter membrane. method, electrospinning technology, as a method that can prepare ultrafine fibers with diameters in the range of several nanometers to several microns, has attracted widespread attention in the preparation of fiber filtration membranes. In addition to the small fiber diameter, electrospinning technology The prepared fiber material also has the advantages of small pore size, high porosity, and good fiber uniformity, which makes it show great potential applications in the fields of gas filtration, liquid filtration and personal protection; therefore, an industrial air filter has been developed. Filtering membrane for device is a problem to be solved urgently by those skilled in the art