Preparation method of antifouling self-cleaning coating for glass

Abstract

The invention discloses a preparation method of antifouling self-cleaning coating for glass. The preparation method comprises the following steps: step 1, weighing the following raw materials in partsby weight: 34 to 40 parts of organic silicon modified epoxy resin, 24 to 28 parts of silicon-nitrogen resin, 16 to 22 parts of modified silicon dioxide microsphere emulsion, 14 to 18 parts of modified volcanic glass, 5 to 9 parts of methyl hydroxyethyl cellulose, 12 to 18 parts of a solvent, 3 to 6 parts of sodium bentonite and 2 to 5 parts of a coupling agent. According to the preparation methodof the antifouling self-cleaning coating for the glass, the coating has a very high adhesive force on the glass; and meanwhile, the coating has a strong antifouling self-cleaning capability.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a preparation method of an antifouling self-cleaning coating for glass. Background technique [0002] The glass includes quartz glass, silicate glass, soda-lime glass, fluoride glass, high-temperature glass, high-pressure resistant glass, UV-resistant glass, explosion-proof glass, etc. Usually refers to silicate glass, made of quartz sand, soda ash, feldspar and limestone, etc. Medical, chemical, electronic, instrumentation, nuclear engineering and other fields, and glass is used on car windows, which is easy to accumulate dirt, which affects its appearance and efficiency. Therefore, this invention coats a layer of paint on the glass to improve the antifouling and self-cleaning of the glass Features. [0003] The existing Chinese patent literature (publication number: CN106700681B) discloses a wear-resistant and scratch-resistant coating, which is prepared by the following met...

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Problems solved by technology

[0003] The existing Chinese patent literature (publication number: CN106700681B) discloses a wear-resistant and scratch-resistant coating, which is prepared by the following method: (1) adding a mixed solution of alkaline silica sol, distilled water and acetic acid to the reactor, When the temperature of the system reaches 60°C, start to add dropwise alkoxysilanes with at least two functionalities. After the dropwise addition, the temperature is raised to reflux, and the reaction solution is obtained by cooling down; (2) adding carbon black to the silane coupling agent, Ultrasonic dispersion to obtain a mixed solution; (3) adding polytetrafluoroethylene to the reaction solution obtained in step (1) to heat up and reflux, cool down after the system is refluxed, add the mixed solution and solvent obtained in step (2), and stir to obtain a coating. Although the coating has wear-resistant and scratch-resistant properties, its self-cleaning performance is poor

[0004] Chinese patent literature (publication number: CN104192897B) discloses a kind of nano TiO 2 The preparation method of material and self-cleaning paint and the method for making self-cleaning glass, the present invention solves the problem of nano-TiO 2 Material particle size and technical issues in improving the self-cleaning performance of self-cleaning coatings and making self-cleaning glass, nano-TiO 2 The material is prepared by doping TiO with nitrogen 2 Ultrafine particles enter the electric field of the cathode and anode composed of two metal plates and filled with argon gas, settle on the cathode target, evaporate out, and are cooled by inert gas to become TiO with a particle size of 2-20nm 2 , nano-TiO with uniform particle size 2 , the coating is made of nano-materials, although it has a cleaning function, but the adhesion is not strong, so it is not easy to use on glass

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