Composite fiber film for filtering air

Abstract

The invention discloses composite fiber film for filtering PM 2.5 in air. A preparation method of the composite fiber film comprises the following steps that EVA hot melt glue mesh film is provided; the EVA hot melt glue mesh film is subjected to surface activation; a first electrospinning method is used for forming a first PET fiber layer on the surface of the activated EVA hot melt glue mesh film; a second electrospinning method is used for forming a first PA6 fiber layer on the surface of the first PET fiber layer; a third electrospinning method is used for forming a PVA / PA6 composite fiberlayer on the surface of the first PA6 fiber layer; a fourth electrospinning method is used for forming a first PVA fiber layer on the PVA / PA6 composite fiber layer; a fifth electrospinning method isused for forming a second PET fiber layer on the surface of the first PVA fiber layer. According to the composite fiber film, the filter material is reasonable in structure, and PM 2.5 in the environment can be effectively sucked. The composite fiber film is good in mechanical property and resistant to scrubbing and ordinary collision, and recycling of the filter material can be guaranteed.

Description

technical field [0001] The invention relates to the field of air pollution control, in particular to a composite fiber membrane for filtering air. Background technique [0002] In recent years, with the continuous advancement of science and technology, the excessive growth of industry has led to aggravated environmental pollution, making air quality problems increasingly prominent. In recent years, smog has occurred frequently. As the most important pollutant that constitutes smog, PM2.5 has gradually become the focus of attention. PM2.5 refers to pollutant particles whose particle diameter is less than or equal to 2.5 microns. It is a pollutant itself and can be used as a good carrier of toxic and harmful substances such as heavy metals and polycyclic aromatic hydrocarbons in the air. It can directly enter the lungs and cardiovascular system of the human body through the respiratory system, causing serious damage to the respiratory system and cardiovascular system. , incr...

AI Technical Summary

Problems solved by technology

Traditional filter materials can no longer meet people's needs, and the research on efficient and multifunctional materials has become the development trend of filter materials

[0003] At present, some air filter materials for fresh air systems have been proposed in the existing technology, but these materials cannot meet the daily needs: the current filter materials have poor adsorption capacity, and in order to effectively absorb dust and PM2.5, it is necessary to increase the filter material. Thickness, but increasing the material thickness will inevitably increase the cost of manufacturing materials, and at the same time reduce the resistance of air circulation in the ventilation system, resulting in greater power consumption of the fresh air system, which in turn aggravates environmental pollution; at the same time, the current filter material is relatively strong. Poor, it will be damaged after several times of cleaning, which is not conducive to repeated use

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