A kind of cross-linkable fluorosilicone resin and its preparation and application in super amphiphobic materials

Abstract

The invention discloses cross-linkable fluorosilicon resin as well as a preparation and an application thereof in a super-amphiphobic material. A chemical grafting method is used for grafting a fluorine-containing polymer and a hydrophilic substance onto silicon-containing epoxy resin, and meanwhile partial epoxy groups are remained. According to the method, an epoxy component, a fluorine-containing component and the hydrophilic substance can be flexibly regulated according to demands. The preparation method is simple, convenient to operate, low in cost and easily subjected to large-scale industrialization. The fluorosilicon resin disclosed by the invention has very wide application field and can be prepared into the aqueous super-amphiphobic material. The fluorine-containing substance is firmly adhered on the surface of a base material in a polymer form, so that a constructed super-amphiphobic coating has good durability, and then satisfies the growing demands of modern dopes and surface treatment field, can be widely applied to production and life aspects such as outer layer protection of military equipment, water-resistance and corrosion-resistance of outer layers of oil pipelines, sanitary tools, windscreens, wood and buildings.

Description

technical field [0001] The invention belongs to the field of super-amphiphobic materials, and in particular relates to a water-dispersible cross-linkable fluorosilicone resin and its preparation and application on super-amphiphobic materials. Background technique [0002] Surface wettability is one of the important characteristics of solid surfaces. The wettability can be measured by the contact angle of water on the surface. Usually, the surface with a water contact angle of more than 150° and a rolling angle of less than 10° is called a superhydrophobic surface. The surface has a contact angle of more than 150° to oil, which can be considered as a superoleophobic surface. If the static contact angles of water and oil on a surface are both greater than 150° and the rolling angles are both less than 5°, the interface can be called a superamphiphobic interface. Superhydrophobic surfaces and superamphiphobic surfaces have a certain self-cleaning function, that is, surface pol...

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Problems solved by technology

However, the substrates that can be treated by this method have certain limitations and must contain active groups (such as hydroxyl, carboxyl, amino, etc.), otherwise they will not have adhesive properties, and the fluorine-containing microspheres need to be dispersed in a fluorine-containing solvent

[0005] Chinese patent 201110266897.9 proposes a method of blending fluorine-containing silicon-containing copolymers and silicon dioxide to assemble a film on the surface containing active groups, which can endow the surface with good super-amphiphobic properties. This method utilizes relatively There are many fluorine-containing silicon-containing copolymers, the cost is high, and blending and assembly reactions are required, the process is relatively complicated, and the substrate needs to contain active groups, which is not universal

However, the treatment process of this method is cumbersome and requires high reagents and equipment, and the fluorine-containing microspheres need to be dispersed in a fluorine-containing solvent, and there are no adhesive groups on the surface, so the adhesion is not very strong.

[0007] Although the above patents have solved many problems in superamphiphobic aspects, there are still many problems in the process of large-scale production and implementation, such as complicated methods and high costs.

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