Super-hydrophobic nano-composite coating and preparation method thereof

Abstract

The invention discloses a super-hydrophobic nano-composite coating comprising the following components in percentage by weight: 0.5-10.5 percent of hydrophobic silicon dioxide, 0.2-5.4 percent of hydrophobic polymer material and 86.5-99.3 percent of solvent, wherein a contact angle of a water drop on a membrane surface prepared by the coating is 152-169 degrees, and a rolling angle is 1-9 degrees. When the coating is transparent, the visible light transmission of the membrane prepared from the coating is 80-94 percent. The invention also discloses a preparation method of the super-hydrophobic nano-composite coating. The nano-composite coating not only has excellent super-hydrophobicity and low cost of products, but also can obtain higher transparency by reducing the contents of the hydrophobic silicon dioxide and the hydrophobic polymer material and has simple preparation processing equipment and high production efficiency.

Description

technical field [0001] The invention belongs to the technical field of super-hydrophobic paint and its preparation, and in particular relates to a super-hydrophobic nano-composite paint and a preparation method thereof. Background technique [0002] Superhydrophobic materials have become a hot spot of scientific research in recent years because of their practical application value in the fields of waterproofing, self-cleaning, hull drag reduction, lossless transfer of micro-droplets, and microfluidic systems. [0003] Superhydrophobic materials usually need to meet two requirements: one is that the contact angle of water droplets on the surface of the material must be above 150°, and the other is that the rolling angle of water droplets on the surface of the material must be less than 10°. To make the prepared superhydrophobic material meet such requirements, two key conditions need to be met: one is that the surface of the material has sufficient roughness, especially a dua...

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Problems solved by technology

Since these methods may require complex equipment and instruments (plasma treatment, electrospinning, template method, etc.) or complex process means (phase separation, sol-gel method, etc.), the limitations are too large to be widely applied

[0004] In addition, when the superhydrophobic material is used as the surface material of the transparent matrix material, on the one hand, the transparency of the superhydrophobic material itself will directly affect the transparency of the matrix material; The increase of roughness will increase the material's reflection and absorption of visible light, resulting in a decrease in the transparency of the material, which also limits the use of superhydrophobic materials as surface materials for applications that require the entire material to be transparent

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