Silver priming paint of 1K silver powder containing automobile refinishing coating and preparation method thereof

Abstract

The invention discloses a silver priming paint of a 1K silver powder containing automobile refinishing coating and a preparation method thereof. The silver priming paint is composed of a base material and a pigment, wherein the base material contains low hydroxy acrylic resin, polyester resin, cellulose acetate butyrate, a levelling agent, an anti-settling agent and a solvent; and the pigment contains a coated aluminium paste, a wetting dispersant and n-butyl acetate. The preparation method comprises the following steps of: adding the coated aluminium paste into n-butyl acetate with the wetting dispersant dissolved in it so as to obtain the pigment; mixing the low hydroxy acrylic resin, cellulose acetate butyrate, polyester resin, the levelling agent and the anti-settling agent, dispersing at a high speed, and adding the solvent to obtain the base material; adding the pigment into the base material, dispersing at a low speed, discharging, and filtering to obtain the priming paint. The refinishing coating prepared by the complex formulation of the priming paint has advantages of high glossiness, excellent adhesion, good flexibility, high hardness, high scratch resistance, good acid and alkali resistance, high viscosity, rapid surface drying and short flash evaporation time. In addition, no curing agent is added during the preparation process. The priming paint volatilizes and dries itself and is convenient to use. by the adoption of the priming paint, comprehensive performance of the automobile refinishing coating is raised.

Description

technical field [0001] The invention belongs to the technical field of automobile refinish paints, and relates to a primer for automobile refinish paints and a preparation method thereof, in particular to a silver primer for 1K silver powder automobile refinish paints and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of the automobile industry and the improvement of people's living standards, people have higher and higher requirements for aesthetics. As a high value-added product, silver powder paint is in line with the development trend of the market. [0003] The existing silver powder paint has the following disadvantages: (1) the surface is prone to blooming, orange peel, depression, and poor smoothness; (2) the surface is slow to dry and the flashing time is long; (3) the hardness and flexibility of the paint film are difficult At the same time to achieve the optimum, the increase of hardness should be at the exp...

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Problems solved by technology

[0003] The existing silver powder paint has the following disadvantages: (1) the surface is prone to blooming, orange peel, depression, and poor smoothness; (2) the surface is slow to dry and the flashing time is long; (3) the hardness and flexibility of the paint film are difficult At the same time to achieve the optimum, the increase of hardness should be at the expense of the reduction of flexibility. The hardness of the current automotive refinish paint is generally between H and 2H; (4) The construction range of spraying is narrow, and the conditions such as viscosity and air pressure must be strictly controlled.

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