A preparation method of flexible carbon fiber with superamphiphobic properties

Abstract

The invention discloses a method for preparing flexible carbon fibers with super-amphiphobic properties, belonging to the technical field of super-amphiphobic material production. Polyacrylonitrile and manganese acetylacetonate are dissolved in N,N‒dimethylformamide to form a uniform electrospinning solution, and nano-spun fibers are prepared by electrospinning technology; the nano-spun fibers are first pre-treated After oxidation, it is then placed in a nitrogen atmosphere for high-temperature carbonization treatment to obtain manganese-doped carbon nanofibers; soaking the manganese-doped carbon nanofibers in ethanol solution of POTS to obtain super-amphiphobic flexible carbon materials. The process of the invention is simple, the shape of the spinning fiber can be adjusted, and the invention is green and environment-friendly. The average size of the spun carbon fibers is 300-450 nm, and the prepared carbon fibers with superamphiphobic properties exhibit a contact angle of about 155° and a rolling angle of about 4° at different pHs. The contact angle to different oils is about 152°.

Description

technical field [0001] The invention belongs to the technical field of super amphiphobic material production. Background technique [0002] Electrospinning, as a low-cost and simple method, is expected to gain wide application in the preparation of large-scale nanomaterials. Carbon nanofibers prepared by electrospinning usually have good electrical conductivity and high aspect ratio, and can form self-supporting non-woven fabric-like structures. Carbon nanofiber membranes (CNFs) have excellent tensile strength, thermal stability, electrical conductivity, and catalytic activity, and have become a research hotspot for researchers around the world in recent years. However, poor bending properties and inherent brittleness severely limit its application in the field of composite materials. [0003] At present, with the rapid development of urban construction, people have higher and higher requirements for living environment. While urban buildings bring artistic enjoyment to peo...

AI Technical Summary

Problems solved by technology

However, this super-amphiphobic self-cleaning surface based on the "lotus leaf effect" has not yet been industrialized at home and abroad.

One of the reasons affecting the practical use of super-amphiphobic self-cleaning surfaces is that most of the self-cleaning surfaces currently developed only have superhydrophobic properties (not superoleophobic); these superhydrophobic surfaces do not have repulsion to oil, so for Oil stains and other stains are often helpless

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