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Water-based two-component full-matte varnish and preparation method thereof

A two-component, clear topcoat technology, applied in coatings and other directions, can solve the problems of too large difference in transparency, poor film transparency, affecting product quality, etc., to improve crack resistance, good density, and film forming time. and the effect of a short drying rate

Inactive Publication Date: 2020-05-29
SHANGHAI CHANGRUNFA PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to obtain a good matting effect, 4.8-5.1 parts by weight of matting powder is added to the formula, accounting for more than 5%. The transparency of the paint film is acceptable in the first pass of construction, but some workpieces need it due to uncontrollable factors. When reworking, the transparency of the paint film after recoating is poor, and the overall whitishness leads to unclear wood grains, and the transparency of the workpiece is too different after assembly, which affects product quality

Method used

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  • Water-based two-component full-matte varnish and preparation method thereof
  • Water-based two-component full-matte varnish and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055]Embodiment 1: A kind of water-based two-component matte varnish, each component and its corresponding parts by weight are as shown in Table 1, and are prepared through the following steps:

[0056] S1, according to Table 1, pre-mix the defoamer, film-forming aid, dispersant, wetting agent and 1 / 5 deionized water in corresponding parts by weight, and stir evenly for later use;

[0057] S2, according to Table 1, put the water-based high-hydroxyl acrylic emulsion and the water-based low-hydroxyl acrylic emulsion in corresponding parts by weight into the dispersion tank, and disperse at a speed of 400r / min for 10min;

[0058] S3, increase the speed of the disperser to 600r / min, add the pre-mixed mixture in the step S1 into the dispersion cylinder, and disperse at a high speed of 1000r / min for 25 minutes;

[0059] S4, reduce the speed of the disperser to 400r / min, put in fumed silica, clean the edge of the dispersion tank with 1 / 5 of deionized water after feeding and add it t...

Embodiment 2-6

[0062] Example 2-6: A water-based two-component matt clear finish, the difference from Example 1 is that each component and its corresponding parts by weight are shown in Table 1.

[0063] Each component and parts by weight thereof in table 1 embodiment 1-6

[0064]

Embodiment 7

[0065] Embodiment 7: A kind of water-based two-component matte varnish, the difference from Example 1 is that it is prepared through the following steps:

[0066] S1, according to Table 1, pre-mix the defoamer, film-forming aid, dispersant, wetting agent and 1 / 5 deionized water in corresponding parts by weight, and stir evenly for later use;

[0067] S2, according to Table 1, put the water-based high-hydroxyl acrylic emulsion and the water-based low-hydroxyl acrylic emulsion in corresponding parts by weight into the dispersion tank, and disperse at a speed of 500r / min for 5min;

[0068] S3, increase the speed of the disperser to 700r / min, add the pre-mixed mixture in the step S1 into the dispersion cylinder, and disperse at a high speed of 1200r / min for 15 minutes;

[0069] S4, reduce the speed of the disperser to 500r / min, put in fumed silica, use 1 / 5 deionized water to clean the edge of the dispersion tank and add it to the dispersion tank after feeding, increase the speed t...

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Abstract

The invention discloses water-based two-component matte varnish and a preparation method thereof, and relates to the technical field of water-based paint. The water-based two-component matte varnish is characterized by being prepared from the following components in parts by weight: 45-65 parts of water-based high-hydroxyl acrylic emulsion; 10-30 parts of a water-based low-hydroxyl acrylic emulsion; 0.6-1 parts of a defoaming agent; 3-8 parts of a coalescing agent; 9.6-10.6 parts of deionized water; 0.3-0.8 parts of a dispersing agent; 0.3-0.8 parts of a wetting agent; 1.8-2.8 parts of fumed silica; 3-8 parts of a thickening agent; 1-5 parts of wax emulsion; and 0.1-0.5 parts of a leveling agent. The water-based varnish prepared by adopting the formula has the advantage of high recoated transparency.

Description

technical field [0001] The invention relates to the technical field of water-based coatings, more specifically, it relates to a water-based two-component all-matt clear topcoat and a preparation method thereof. Background technique [0002] The environmental protection performance of furniture is increasingly concerned by consumers. According to the survey, 63% of consumers choose to judge the environmental protection performance of furniture from the paint. According to the principle of market orientation, some leading furniture companies have switched to environmentally friendly water-based wood lacquers and chose to carry out the "oil-to-water" project in order to create a high-quality brand image and enhance product competitiveness. [0003] In the Chinese invention patent whose authorized notification number is CN103102775B, a matte varnish is disclosed, which consists of the following components in parts by weight: modified alkyd resin 71.5-72.5, xylene 4.8-5.3, butyl ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D7/42
CPCC08L2201/10C08L2205/025C08L2205/03C09D133/04C09D7/42C08L33/04C08L91/06C08K7/26C08L23/06
Inventor 王晨梁文文
Owner SHANGHAI CHANGRUNFA PAINT
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