Anti-fog coating material and preparation method thereof

Abstract

The invention discloses an anti-fog coating material and a preparation method thereof. The anti-fog coating material comprises the following components, in parts by mass: 20-40 parts of acrylic resin, 15-25 parts of alkyd resin, 10-20 parts of epoxy resin, 5-15 parts of sodium aliphatate, 10 parts of a binary block copolymer containing propanamide and hydroxyethyl ester, 5-25 parts of a surfactant, 8-12 parts of inorganic nanometer particles, 0.3-0.6 part of an antifoaming agent, 0.1-3 parts of a coupling agent and 1-3 parts of essence. According to the anti-fog coating material disclosed in the invention, the hydrophilicity is high, fog resistance and bright-light resistance are good, and the stability is high, and the coating material mainly used in the fields which need long-efficiency and high-quality fog resistance such as architectural glass, automobile window decorations, ocean ships, and port glass facilities, and practicability and security of devices can be effectively increased.

Description

technical field [0001] The invention relates to the field of functional coatings, in particular to an anti-fog coating and its preparation method and application. Background technique [0002] Transparent substrates (such as glass, plastic, etc.) are indispensable materials in people's daily life, work and production, but when the temperature difference between the inside and outside is too large, the phenomenon of atomization will occur on the glass separating the two spaces, which will affect people's line of sight. People standing in front of the glass cannot see the objects in the external space clearly, and have a low sense of security, especially for the glass installed on the running objects (such as the front and rear windows of the car), after the fogging phenomenon occurs, the internal operators cannot pass through the glass. See clearly whether there are obstacles in front of the running object. If there is an external strong light source at this time, the strong...

AI Technical Summary

Problems solved by technology

Although the effect of simply using surfactants is much better, with the continuous improvement of application occasions and requirements, there are still some key problems in the adaptability of current anti-fog coatings that have not been completely resolved and need to be solved urgently, such as anti-fog performance. Unsatisfactory, low film strength and poor durability, etc., this is a pair of contradictory problems, because the anti-fog component of the traditional anti-fog coating is the film-forming substance that provides the mechanical properties of the coating

The way to improve hydrophilic resin water absorption swelling, scratch resistance, and adhesion decrease is to cure with crosslinking agent, which will inevitably affect the water absorption of the resin and reduce the anti-fog property of the coating

Therefore, it is necessary to reduce the amount of crosslinking agent as much as possible on the basis of ensuring mechanical strength. This coordinated solution seriously hinders the further development and application of anti-fog coatings.

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