Graphene melt-blown non-woven fabric and preparation method thereof

Abstract

The invention discloses a graphene melt-blown non-woven fabric and a preparation method thereof, and relates to the technical field of non-woven fabrics. The preparation method of the graphene melt-blown non-woven fabric comprises the following steps of (1) carrying out ultrasonic stripping on graphite oxide to prepare graphene oxide dispersion liquid, and adding a stabilizer and a reducing agent into the dispersion liquid to carry out chemical reduction to obtain graphene dispersion liquid; (2) immersing a melt-blown non-woven fabric into the graphene dispersion liquid, and then carrying out suction filtration, so that graphene is gradually deposited on the surface of the melt-blown non-woven fabric, and the liquid is sucked completely; and (3) after the step (2) is completed, drying the melt-blown non-woven fabric on which a graphene layer is formed to obtain the graphene melt-blown non-woven fabric. The preparation method of the graphene melt-blown non-woven fabric is simple and convenient, the graphene is uniformly distributed on the surface of the non-woven fabric, the prepared graphene melt-blown non-woven fabric has good filtration and air permeability, and the graphene layer is tightly bonded with the non-woven fabric and is not easy to strip off in a use process.

Description

technical field [0001] The invention relates to the technical field of non-woven fabrics, in particular to a graphene melt-blown non-woven fabric and a preparation method thereof. Background technique [0002] Melt-blown non-woven fabric is a good air filter material, which is often used to prepare air purifier filter elements, mask filter layers, etc. Combining melt-blown cloth with graphene can improve the filtration efficiency of melt-blown non-woven fabrics, and endow the melt-blown cloth with functions such as hydrophilicity, antibacterial, antistatic, anti-ultraviolet, and anti-aging. [0003] One of the existing melt-blown cloth and graphene composite technologies is to add graphene powder to the melt-blown material or prepare a masterbatch and blend it with the melt-blown material. CN109824978A provides a polypropylene masterbatch, high-carbon After alkane and graphene after grinding are stirred and mixed, they are extruded and granulated, and then the graphene mast...

AI Technical Summary

Problems solved by technology

[0003] One of the existing melt-blown cloth and graphene composite technologies is to add graphene powder to the melt-blown material or prepare a masterbatch and blend it with the melt-blown material. CN109824978A provides a polypropylene masterbatch, high-carbon After alkane and graphene after grinding are stirred and mixed, they are extruded and granulated, and then the graphene masterbatch is mixed with polypropylene to prepare the method for melt-blown cloth. CN111334932A provides a graphene polypropylene masterbatch, polypropylene slices and improved The method of preparing melt-blown cloth after mixing the additives has the following technical problems: 1. The dry graphene will be agglomerated under the strong π-π stacking action, and the mixing and shearing action of processing machinery such as twin-screw It cannot be dispersed well; 2. In the melt-blown cloth prepared by this type of technology, the graphene aggregates are separated from each other and cannot form a complete barrier, which has a limited effect on improving the filtration efficiency; 3. The spinneret holes of the melt-blown cloth are very Narrow and undispersed graphene is easy to block holes, resulting in uneven weight of melt-blown cloth, and frequent cleaning of the spinneret, etc.

However, this impregnation method needs to modify the non-woven fabric in advance, and the impregnation time is long, the loading of graphene is difficult to quantitatively control, and the continuity of the graphene layer is not good.

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