Polyurethane coating preparation method

Abstract

The invention relates to a polyurethane coating preparation method, which comprises a workbench, a preparation device and a heating device; the preparation device is fixedly installed at the upper end of the workbench, the heating device is fixedly installed at the left end of the preparation device, the preparation device is fixedly installed at the upper end of the workbench, and the heating device is fixedly installed at the left end of the preparation device; the preparation device comprises a heat preservation plate, a cylindrical plate, a feeding pipe, a first motor, a rotating column, a grinding frame, a screening plate, a stirring frame, a screening circular plate, a conical barrel and a discharging pipe. According to the invention, the pigment is ground through the preparation device, and meanwhile, the pigment and a mixed emulsion of polyurethane and auxiliaries are stirred and mixed and are sieved, so that accumulation of pigments is prevented. The polyurethane and the auxiliaries are heated through the heating device, and meanwhile, the heated mixture is screened, so that the situation that solid polyurethane enters the preparation device along with liquid polyurethane, thereby preventing influence on the production quality.

Description

technical field [0001] The invention relates to the field of paint preparation, in particular to a preparation method of polyurethane paint. Background technique [0002] Polyurethane coatings are generally composed of polyisocyanate prepolymers, active hydrogen-containing compounds and resins, catalysts and other additives. They are usually called curing agent components and main agent components. They have a wide range of applications and generally have good Mechanical properties, higher solid content, and better performance in all aspects are promising coating varieties. The main application directions are wood coatings, automotive repair coatings, anti-corrosion coatings, floor paints, electronic coatings, and special coatings. The disadvantages of coatings, polyurethane waterproof coatings, etc. are that the construction process is complicated, the requirements for the construction environment are high, and the paint film is prone to disadvantages. [0003] In the proc...

AI Technical Summary

Problems solved by technology

[0004] (1) When the traditional polyurethane coating preparation equipment processes polyurethane, it directly heats it at the same time, resulting in the presence of solid polyurethane particles in the liquid polyurethane, which affects the subsequent production and processing

[0005] (2) When the traditional polyurethane coating preparation equipment processes polyurethane, it is necessary to mix the pigment with the mixed emulsion of polyurethane and additives, which can easily lead to the accumulation of pigments into a group, resulting in a reduction in the production quality of the equipment

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