Oil adhesion-control antifouling self-cleaning fluoride-free coating and preparation method

Abstract

The invention discloses an antifouling biomimetic coating with low adhesion of oil and fat and a preparation method of the antifouling biomimetic coating. Dolphin elastic skin is adopted as a basic research model of the coating, and the coating is obtained through crosslinking of polymer materials with a high elastic modulus and a low surface energy. Through control on the cross-linking density ofthe coating, change of low surface energy content and other parameter control, the adhesion resistance of the coating to various oil and low-surface-tension liquids is achieved. The coating has excellent oil adhesion resistance in both static and dynamic environments. The coating can be applied to multiple substrate surfaces, and can be applied to surfaces of various metals, ceramics, glass, various polymer materials and other materials, the adhesion between the coating and a substrate is high, and good transparency, flexibility, corrosion protection and other performance are achieved; and the coating is mainly applied to ventilation device blades, fume hood fan blade parts, smoke exhaust ventilator fan blade parts and other fan blade parts, and has a good application prospect and economic significance in reduction of surface oil stain and dust pollution, reduction of energy consumption, improvement of the work efficiency and reduction of energy consumption.

Description

technical field [0001] The invention belongs to the technical field of novel polymer surface coatings and surface functional coatings, and in particular relates to an oil-controlling, anti-fouling, self-cleaning, fluorine-free coating and a preparation method thereof. Background technique [0002] So far, there are many studies on the design and preparation of anti-fouling and self-cleaning surfaces, but most of the functional surfaces are devoted to water droplet-related pollution protection and self-cleaning effect. In comparison, the adhesion and pollution of low surface tension liquids represented by various oils on the surface have a greater impact, and surface cleaning is more difficult. Among them, the impact is more significant in the fields of factory exhaust equipment, various window exhaust fans, and household range hoods. The entire pollution process is mainly as follows: first, oil and gas adhere to the surface of the exhaust fan blades, and then impurities suc...

AI Technical Summary

Problems solved by technology

Once the grease solidified layer is formed, it can significantly reduce the air extraction efficiency of the ventilation blades, further increase energy consumption, and increase pollution to the surrounding environment

The current research on oil surface pollution mainly focuses on the following two strategies: (1) Realize superoleophobic performance by constructing a rough surface with a wedge-shaped structure, although this strategy can achieve better anti-oil adhesion effect, However, the surface construction of wedge-shaped micro-nano structures is time-consuming, laborious, and cumbersome, which is not conducive to large-scale preparation, and is only at the stage of academic research.

(2) Use fluoride materials with low surface energy as the outermost surface of the coating to reduce oil adhesion. Currently, fluorine-containing materials typically represented by polytetrafluoroethylene (Teflon non-stick pan) are used to control low surface energy. The adhesion of energy-based materials has been widely used. However, in recent years, with the enhancement of human environmental protection awareness and the further deepening of the concept of green sustainable development, it has been found that fluorine-containing materials have brought serious problems to human health and social environmental pollution.

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