Preparation method of (SiC) super-hydrophobic membrane layer with lotus leaf effect

Abstract

The invention relates to a preparation method of a (SiC) super-hydrophobic membrane layer with a lotus leaf effect, and belongs to the technical field of material surface modification. A micro-nano structure is constructed and the preparation of the (SiC) super-hydrophobic membrane layer is realized by adopting a simple chemical deposition method under the conditions of normal pressure and normal temperature. The preparation process comprises the steps of (SiC) pretreatment, (SiC) surface chemical deposition modification and long-time standing of the modified (SiC). The static water contact angle of the prepared membrane layer is 150-160 degrees, the rolling angle is less than 10 degrees, and the prepared membrane layer shows good super-hydrophobicity at 10-80 DEG C. According to the preparation method of the (SiC) super-hydrophobic membrane layer with the lotus leaf effect, the used (SiC) is a waste material generated in an industrial production process, has low requirements on raw materials, is beneficial to resource reutilization, has the advantages of simplicity in operation, environmental friendliness, low equipment requirements, good hydrophobic effect and the like at the same time, and is convenient to popularize; and super-hydrophobic silicon carbide particles can be widely applied to the fields of self-cleaning, anti-icing, anti-fog, anti-fouling and the like by combining the excellent properties of wear resistance, corrosion resistance and the like of the super-hydrophobic silicon carbide particles.

Description

technical field [0001] The invention relates to the technical field of preparation and surface modification of inorganic powder materials, in particular to a method for preparing a silicon carbide superhydrophobic film layer with lotus leaf effect. Background technique [0002] Due to the limited contact area between the superhydrophobic surface and water, the chemical reaction and chemical bonding with water are inhibited, so it has the advantages of anti-pollution, self-cleaning, anti-ice and snow, anti-oxidation, and anti-corrosion. In nature, the leaves of many plants and certain parts of animals have superhydrophobic properties, such as lotus leaves, dragonfly wings, and mosquito compound eyes. The lotus leaf is the first plant to be found to be super-hydrophobic. Studies have found that the super-hydrophobic surface in nature has a micro-nano structure similar to the surface of the lotus leaf, which is called the "lotus leaf effect". The wettability of a solid surface...

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Problems solved by technology

However, most of the above-mentioned preparation methods require the use of organic solvents, the preparation cost is relatively high, or they are not environmentally friendly, or the process is complicated, or they have high requirements for raw materials and equipment.

[0003] Silicon carbide particles [abbreviated as (SiC) P ] has the advantages of high hardness, wear resistance, high temperature resistance, etc., but it is hydrophilic, especially the particle size of silicon carbide powder is small, the specific surface area is large, and it has strong hydrophilicity. It is related to (SiC) P There are few reports on the preparation methods of superhydrophobic membranes

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