Device and method for preparing nano carbon material composite filter material

Abstract

The invention relates to a device and a method for preparing a nano carbon material composite filter material. According to the preparation device, a needle with a hollow structure and an open pore and a needle plate with a sandwich structure are designed, and the hollow structure of the needle is communicated with the sandwich structure of the needle plate, so that an injectable needle device isformed, and needle processing and material compounding can be synchronously completed. According to the preparation method disclosed by the invention, the nano carbon material is injected into matrixfiber through a needling system, so that the nano carbon material is uniformly loaded on the surface of the matrix fiber while the three-dimensional space in the matrix fiber is tighter and more uniform, and the nano carbon material composite filter material is further obtained. Besides, the preparation method is not limited to a nano carbon material, is also applicable to other functional materials, and has the advantages of wide application range, simplicity in operation, time saving and labor saving.

Description

technical field [0001] The invention relates to the technical field of composite fibers, in particular to a preparation device and method of a nano-carbon material composite filter material. Background technique [0002] Carbon nanomaterials refer to carbon materials with at least one dimension of the dispersed phase smaller than 100nm. The dispersed phase can be composed of either carbon atoms or heteroatoms (non-carbon atoms), or even nanopores. Carbon nanomaterials have stable chemical properties, high temperature resistance, ultra-high specific surface area, functional regulation and super adsorption performance, and are important high-performance adsorption materials. [0003] Non-woven filter material, referred to as non-woven filter material, has a three-dimensional fiber network structure, and a large number of microporous structures have good permeability. Under the same effective passing area, the filtration efficiency of non-woven filter material is much higher t...

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Problems solved by technology

However, there are two main problems in this method: on the one hand, because the filter material has been processed, the designability is limited, and the surface energy of the nano-carbon material is high, the aggregation form is mainly powder and liquid phase dispersion system, and it is easy to agglomerate , is not suitable for use as a filter material alone, and needs to be loaded with functional materials by spraying or impregnating. This type of method can only guarantee the functional treatment of the surface of the non-woven filter material, but it is difficult to treat the fibers of the non-woven filter material. On the other hand, the preparation process of traditional composite materials such as weaving, weaving and knitting is cumbersome, often consumes a lot of manpower and material resources, and the preparation cycle is long. This leads to an increase in the application cost of composite functional filter materials, which seriously affects the further application and development of filter materials.

For example, CN110552116A discloses a non-woven needle punching machine; CN107641900A discloses a needle punching mechanism of a needle punch; , but the above-mentioned patents only optimized the needle punching stability, fiber cleaning on the needle punching, adjusting the needle punching angle, etc., and did not carry out equipment improvement related to the functional treatment of nano-carbon materials

In addition, some researchers first functionalize the matrix fiber, and then use a needle punch to prepare a functional non-woven filter material. For example, CN105463613A discloses a polyamide 6-graphene quantum dot / carbon nanotube antistatic fiber and preparation, including preparation of graphene quantum dot / carbon nanotube (GQD / CNT) composite material, preparation of polyamide 6-graphene quantum dot / carbon nanotube (PA6-GQD / CNT) masterbatch, melt spinning , the obtained functional spinning can be used to prepare needle-punched carpets, but this preparation method still does not improve the function of the needle-punching machine, and has the disadvantages of cumbersome steps, time-consuming and labor-intensive.

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