Reinforced heat-resistant electrostatic-spinning/electret composite fiber membrane filtering material and preparing method thereof

Abstract

The invention discloses a reinforced heat-resistant electrostatic-spinning / electret composite fiber membrane filtering material. The reinforced heat-resistant electrostatic-spinning / electret composite fiber membrane filtering material is prepared from, by weight, 75-85 parts of polyetherimide, 7-13 parts of silicon monoxide, 10-16 parts of powdered activated carbon, 1-2 parts of a 3-aminopropyltriethoxysilane coupling agent, 0.8-2 parts of glacial acetic acid, a proper amount of deionized water, 2-6 parts of metatitanic acid, a proper quantity of a AgNO3 solution of 0.6 mol / L, a proper amount of N-methyl-pyrrolidone, 1-2 parts of oxidized graphene, 1-3 parts of zinc nitrate hexahydrate, 3-9 parts of dimethyl imidazole and 25-40 parts of methyl alcohol. According to the reinforced heat-resistant electrostatic-spinning / electret composite fiber membrane filtering material, silicon nanowires containing alpha-quartz are prepared, the electrostatic-spinning / electret composite fiber filtering material is prepared with the electrospinning technique, the excellent charge storage stability is achieved, and the filtering efficiency of the filtering material is greatly improved; in addition, nano-silver is added to load nanometer titania, the antibacterial durability of the filtering material is improved, and the long-time efficient filtering effect is achieved.

Description

technical field [0001] The invention belongs to the field of air filtration, and in particular relates to a heat-resistant electrostatic spinning / electret composite fiber membrane filter material and a preparation method thereof. [0002] technical background [0003] With the deepening and rapid development of the industrialization process, the dust particles discharged into the atmosphere have increased sharply, among which PM2.5 (particulate pollutants with a particle size of less than 2.5µm) will cause serious harm to human health. It will directly enter the bronchi and cause diseases such as asthma, bronchitis, pneumoconiosis and cardiovascular disease. This is one of the main reasons for the sharp increase in lung cancer patients in my country. Therefore, air filter equipment has become a research hotspot, and the research and development of its core filter materials has become a top priority. [0004] The traditional melt-blown nonwoven electret material is treated wit...

AI Technical Summary

Problems solved by technology

[0004] The traditional melt-blown nonwoven electret material is treated with electret, and the surface is charged to make it have a high filtration efficiency, but its charge stability is easily affected by the environment, and the charge decay rate is fast, and the filtration efficiency is greatly reduced.

In addition, the electret process, as a necessary post-treatment process, also increases the production cost to a certain extent