A kind of easy orientation, high-performance fluoro-silicon composite water-based aluminum powder paint and preparation method thereof

Abstract

The invention discloses easily-oriented and high-performance fluorosilicon composite waterborne aluminum powder paint and a preparation method thereof. The easily-oriented and high-performance fluorosilicon composite waterborne aluminum powder paint is prepared from 54.1 to 54.55 parts of fluorosilicon composite base material, 32.9 to 33.1 parts of waterborne type aluminum paste pre-dispersion solution, 11.6 to 11.75 parts of anti-sinking and fast directional fluid, 0.3 to 0.7 part of deionized water and 0.3 to 0.7 part of thickening agent; the waterborne type aluminum paste pre-dispersion solution is prepared from 21 to 23 parts of the deionized water, 0.6 to 0.8 part of dispersing agent with a linear block structure, 1.9 to 2.1 parts of propylene glycol, 7 to 9 parts of waterborne type aluminum paste and 0.2 to 0.4 part of organosilicon pH modifier; the fluorosilicon composite base material organosilicon is prepared from 19 to 21 parts of organosilicon / acrylic copolymer emulsion, 29to 31 parts of fluorocarbon emulsion, 0.25 to 0.4 part of organosilicon defoaming agent, 0.25 to 0.4 part of organosilicon wetting agent, 0.15 to 0.25 part of organosilicon leveling agent, 0.15 part of preservative, 0.5 to 0.7 part of damp-proof and mildewproof agent and 2.5 to 3 parts of high-efficiency coalescing agent; the anti-sinking and fast directional fluid is prepared from 7.6 to 8.15 parts of the deionized water, 1.3 to 1.7 parts of anti-sediment wax liquor, 1.5 to 2.5 parts of aluminite powder oriented wax liquid and 0.25 to 0.35 part of the organosilicon pH modifier.

Description

technical field [0001] The invention relates to the field of water-based aluminum powder paint, in particular to an easy-orientation, high-performance fluorine-silicon composite water-based aluminum powder paint and a preparation method thereof. Background technique [0002] The modern aluminum composite panel curtain wall is widely used in the exterior wall decoration of various industrial and civil buildings for its smooth, clean, noble and durable characteristics. It is a high-grade decorative material and is deeply loved by architectural designers and consumers. But its high cost also discourages many users and limits its scope of use. Therefore, the imitation aluminum plate effect coating came into being, which attracted the attention of the industry because of its economical applicability, superior performance and comparable to that of aluminum composite panels. In the prior art, the mature application of imitation aluminum composite panel effect paint is two-componen...

AI Technical Summary

Problems solved by technology

In the existing technology, the mature application of imitation aluminum-plastic panel effect paint is a two-component solvent-based aluminum powder paint. This type of paint needs to use a large amount of solvents in the production and construction process, resulting in a large amount of VOC emissions, which is neither environmentally friendly nor economical. It is not safe, and the construction process is complicated, and it has extremely high requirements on the base layer. When the base layer is slightly flawed or cracks occur in the base layer due to settlement and other reasons, it is easy to produce blisters and pan-alkali, which will affect the decorative effect and affect the service life.

[0003] In recent years, some paint companies have begun to develop water-based environmental protection products that can replace solvent-based aluminum powder paints. The main disadvantages are as follows: 1. The product has poor storage stability, easy to expand tanks, settle and agglomerate, and even scrapped in serious cases; 2. Construction application Due to the poor orientation of the aluminum powder, the aluminum powder tends to form agglomerates during roller coating construction, so spraying construction can only be used. Spraying construction cross-contaminates the construction surface and is limited by wind force and wind direction, so the work efficiency is not high; even spraying construction, due to The alignment of aluminum powder is not good, and the aluminum powder is easy to sink during the drying process of the paint film, resulting in weak flashing effect, dark color, low gloss, and low simulation of aluminum-plastic panels; 3. After spraying, the water resistance and weather resistance The performance is not strong, the service life is low, and there is a big gap between performance and solvent-based products

These problems seriously affect the popularization and application of water-based aluminum powder paint

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