Preparation method of super-hydrophobic flame-retardant coating with excellent performance

Abstract

The invention discloses a preparation method of a super-hydrophobic flame-retardant coating with an excellent performance. The preparation method comprises the following steps: dispersing in a mixed solution of absolute ethyl alcohol and ammonia water, ultrasonically stirring, heating, and adding octadecyl trimethoxysilane into the mixed solution to obtain a solution A; dissolving bisphenol A epoxy resin into absolute ethyl alcohol, and performing ultrasonic stirring to obtain a solution B; uniformly mixing the solution A and the solution B, rapidly adding TEOS, adding a flame retardant intermediate, and continuously stirring to obtain a suspension C; and spraying the suspension C onto a substrate for curing to obtain the super-hydrophobic flame-retardant coating. The flame-retardant super-hydrophobic coating with good mechanical stability and chemical stability is successfully prepared by combining a micro-nano structure with epoxy resin, the coating is low in preparation cost, and the preparation technology is simple and is easily applied to industrial production.

Description

technical field [0001] The invention relates to the field of superhydrophobic coating preparation, in particular to a method for preparing a superhydrophobic flame-retardant coating with excellent performance. Background technique [0002] Superhydrophobic surface refers to the material surface with a static contact angle of water droplets greater than 150° and a rolling angle of less than 10°; inspired by the self-cleaning effect of lotus leaves in nature, it is found that the unique micro-nano rough structure and low surface energy properties can make the coating The surface forms an air cushion physical barrier layer; this discovery has been widely used in many engineering fields such as self-cleaning, anti-corrosion, anti-icing and drag reduction; however, with the rapid development of industrialization, coatings with a single performance have been unable to meet people's actual needs. [0003] In practical applications, how to make different properties compatible on th...

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Problems solved by technology

[0002] Superhydrophobic surface refers to the material surface with a static contact angle of water droplets greater than 150° and a rolling angle of less than 10°; inspired by the self-cleaning effect of lotus leaves in nature, it is found that the unique micro-nano rough structure and low surface energy properties can make the coating The surface forms an air cushion physical barrier layer; this discovery has been widely used in many engineering fields such as self-cleaning, anti-corrosion, anti-icing and drag reduction; however, with the rapid development of industrialization, coatings with a single performance have been unable to meet people's real needs

[0003] In practical applications, how to make different properties compatible on the coating; in terms of flame retardancy, the preparation of flame retardants at this stage often relies on polar groups such as phosphorus, while hydrophobicity requires that the surface of the coating be reduced as much as possible. Polar groups; at the same time, complex use environments such as physical wear or strong acid and high temperature will generally affect the performance of the coating, and even cause the coating to lose its lyophobicity directly; in addition, most of the current research on superhydrophobic coatings In the laboratory stage, it is difficult to achieve large-scale industrial application

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