Fine particulate matter filter structure and preparation method thereof

Abstract

The invention discloses a fine particulate matter filter structure and a preparation method thereof. The filter structure comprises a plurality of fine particle filter structure layers and a plurality of polymer layers, wherein a polymer layer is bonded between every two layers of the fine particle filter structure layers; the fine particle filter structure layers comprise substrates; each substrate is provided with an air ventilation cavity which cuts through the upper end surface and the lower end surface of each substrate; a hollow structure layer is arranged on the upper end surface of each substrate; each hollow structure layer comprises a plurality of micro holes arranged inside the hollow structure layer; horizontal nano-fibrous bodies are arranged on the upper parts of the micro holes on each hollow structure layer; longitudinal nano-fibrous bodies are arranged on the hollow structure layers; the longitudinal nano-fibrous bodies cover the horizontal nano-fibrous bodies; each polymer layer comprises polymer material bodies; through holes are arranged in each polymer material body and penetrate through the upper end surface and the lower end surface of the polymer material body; adhesion layers are both arranged on the upper end surfaces and the lower end surfaces of the polymer material bodies; the polymer material bodies are respectively bonded with the upper end surfaces and the lower end surfaces of the adjacent fine particle filter structure layers through the adhesion layers.

Description

technical field [0001] The invention relates to a multi-layer PM2.5 filter structure and a preparation method thereof, and belongs to the cross technical field of materials and MEMS. Background technique [0002] PM2.5, also known as fine particulate matter, is particulate matter with a diameter less than or equal to 2.5 microns. Due to the small particle size of PM2.5, it is rich in a large amount of toxic and harmful substances, and can stay in the air for a long time, and its properties are far away, which has a great impact on the quality of the atmospheric environment. At the same time, it can enter with people's breathing In the body, it accumulates in important parts of the respiratory system such as the trachea or lungs, seriously damaging human health. [0003] Some meteorological experts and medical experts believe that the haze weather caused by fine particles is even more harmful to human health than sandstorms. The size of particles determines where they end u...

AI Technical Summary

Problems solved by technology

In addition, PM2.5 is very easy to adsorb organic pollutants such as polycyclic aromatic hydrocarbons and heavy metals, which significantly increases the chances of carcinogenic, teratogenic, and mutagenic

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