Aerosol type UV coating and preparation method thereof

Abstract

The invention discloses an aerosol type UV coating which comprises a component A paint vehicle and a component B propellant, the component A paint vehicle comprises the following components in parts by weight: 50-70 parts of oligomer, 20-30 parts of a reactive diluent, 1-3 parts of a photoinitiator, 0.1-1 part of a defoamer, 0.1-1 part of a leveling agent, 0-5 parts of filler, 0-8 parts of pigmentand 0.1-1 part of a polymerization inhibitor, and the filling ratio of the component A paint vehicle to the component B propellant is (1.2-2.0): 1. The aerosol paint adopting the technical scheme hasthe advantages that volatile organic solvents are not added into the paint vehicle; after the product is sprayed, the product is cured under ultraviolet radiation, all the components of the paint vehicle participate in cross-linking film formation, and VOC is greatly reduced; under ultraviolet radiation, a paint film is rapidly cross-linked, the drying speed is high, and the construction efficiency is greatly improved; and a paint film is of a three-dimensional net structure after being cured, the hardness, adhesive force, abrasion resistance, weather resistance and solvent resistance are superior to those of traditional aerosol paint, and the use field of the product is further widened.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an aerosol UV coating, and also relates to a preparation method of the coating. Background technique [0002] Aerosol paint (Spray Paint), also known as automatic spray paint or manual automatic spray paint. Aerosol paint is a product in the form of self-pressurized packaging that puts resin, solvent, pigment and filler, propellant, etc. into an aerosol tank, and is controlled by a valve release device to make the mixture spray out in the form of aerosol. [0003] Aerosol paint has the characteristics of flexible and simple construction operation, easy to carry, good spray atomization effect, high spray rate, etc. It breaks the construction method of traditional paint and easily solves the difficult problem of traditional paint in indoor and outdoor construction. Aerosol paint has won the favor of consumers for its convenience, reliability and economy. In recent years, the mark...

AI Technical Summary

Problems solved by technology

[0005] 1. At present, the commercially available aerosol paints are mainly solvent-based acrylic, nitro, and alkyd systems. In order to ensure a better atomization effect of the product, the viscosity is usually low, the formula contains a large amount of organic solvents, and the VOC content is high. Harmful to human body and environment

[0006] 2. The aerosol paint is packaged in one component, and the solvent evaporates and dries after spraying. The film-forming resin has a small molecular weight, low cross-linking density, and general performance. It is used in areas with high paint film requirements, such as the surface of cars and high-end motorcycles. , due to the poor performance of the paint film, car owners often choose to go to the car 4S shop for repairs. Most of them are two-component car refinish paint or baking paint. The paint film has good performance, but the process is complicated, time-consuming and expensive.

[0010] The above-mentioned patents have no beneficial effect on the disclosure of product VOC. The drying of the paint film is mainly volatile drying without cross-linking process, resulting in general mechanical properties of the paint film and poor solvent resistance. Therefore, it is necessary to prepare an environmentally friendly, high solid content, Low-VOC UV system aerosol paint, which can be quickly cured under ultraviolet radiation after spraying, has good mechanical properties and solvent resistance of the paint film, good atomization, and convenient construction, which broadens the application range of aerosol paint to a certain extent

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