Preparation method of ice coating prevention surface of bionic micro-nano composite structure

Abstract

The invention discloses an ice coating prevention surface of a bionic micro-nano composite structure and a preparation method thereof, and belongs to the technical fields of chemistry and materials. The preparation method comprises the steps of: processing a surface micro structure on the surface of a substrate, planting a nano structure on the surface micro structure and finishing the surface toobtain the ice coating prevention surface. The ice coating prevention surface has a micro-nano composite structure, thus the surface roughness of the material is greatly increased, the contact area between liquid drops and the surface of the substrate is reduced, and the surface of the substrate not only has hydrophobicity, but also has lower adhesion property; under the condition of -10 DEG C even -15 DEG C, the surface has hydrophobic and anti-icing effects, and the icing time is larger than 7200 seconds; and the ice coating prevention surface can be formed on multiple materials, thus the limit to low-temperature icing prevention of the materials is greatly widened.

Description

technical field [0001] The invention belongs to the technical fields of chemistry and materials, and relates to a bionic micro-nano composite structure anti-icing surface and a preparation method thereof. Background technique [0002] Icing is very common. Outdoor machinery, buildings, aircraft, ships, cables, towers and other facilities are covered with ice, causing equipment to malfunction and even causing major disasters. It is a worldwide problem. The freezing disaster in the south of my country in the winter of 2008, due to continuous snowfall and freezing rain, led to the accumulation of ice, crushed electric towers, transmission lines, cables, communication towers, interrupted power and communication; at the same time, residential buildings, land transportation and air operations are all It was seriously affected, causing casualties and huge economic losses. In areas where ice and snow disasters are frequent, such as Canada and the United States, special research inst...

AI Technical Summary

Problems solved by technology

The freezing disaster in the south of my country in the winter of 2008, due to continuous snowfall and freezing rain, led to the accumulation of ice, crushed electric towers, transmission lines, cables, communication towers, interrupted power and communication; at the same time, residential buildings, land transportation and air operations are all Seriously affected, causing casualties and huge economic losses

For example, patent CN101358106 discloses an anti-icing nano-composite coating prepared in proportion to organic fluorine-silicon composite polymer materials, nanomaterials, curing agents, solvents, and fillers. The anti-icing coatings applied to transmission lines prepared by this method A variety of complex organic substances are required, and the various solvents used in this method are highly toxic and volatile, which poses a potential safety threat to the environment and construction personnel; patent CN101705488A discloses a method for preparing super-hydrophobic and low-adhesive anti-coated matte surface Preparation method, the method first makes the copper surface have a rough structure by corrosion method, and then hydrophobically modifies to obtain a super-hydrophobic anti-icing surface

Although this method has reduced the thickness of the ice layer on the untreated surface at -5°C for 10 minutes, it still cannot prevent the adhesion of the ice layer.

Images