A kind of environment-friendly air filter non-woven fabric and its production process and application

Abstract

The invention provides an environment-friendly production process of non-woven fabric for air filtration, which belongs to the technical field of air filtration. Polypropylene, electret masterbatch and polymer electret are evenly mixed, and the prepared mixture is fed into a screw for extrusion. machine, the screw extruder is melted and extruded to form a melt, and the melt is sprayed out through a spinneret to form fibers, and the fibers are drawn by hot air at constant temperature and pressure to form melt-blown cloth on the mesh curtain, and then sequentially After infrared radiation heat treatment, high-pressure electret treatment and cooling treatment, the air filter non-woven fabric is wound up, and the electret masterbatch is composed of polypropylene, few-layer graphene nanosheets, antioxidant, compatibilizer, nucleating The composition of the agent; the few-layer graphene nanosheets are prepared by chemical vapor deposition with magnesium oxide microcrystals with a face-centered cubic structure as a substrate and a template, and the electret masterbatch improves the degree of electretization of the fiber, At the same time, the storage stability of the charge is improved, thereby improving the filtration performance.

Description

technical field

[0001] The invention relates to the technical field of air filtration, in particular to an environment-friendly air filtration non-woven fabric and its production process and application. Background technique

[0002] Existing studies have shown that particulate matter caused by pollution in the air, especially those with an aerodynamic equivalent of 2.5 microns or less, has a small particle size and is rich in toxic and harmful substances. These particles can stay in the air for a long time and are easily destroyed. People absorb it into the body and cause respiratory diseases, lung injury, cancer, cardiovascular disease, reproductive system, fetal development and other diseases.

[0003] Commonly used fiber filter materials mainly rely on Brownian diffusion, interception, inertial collision, and direct interception to catch dust. The electrostatic adsorption between filter materials and particles is very small, and the filtration efficiency of small particl...

Images