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Construction method for preventing polyurethane clear lacquer film from blushing

A construction method and polyurethane technology, which can be used in polyurea/polyurethane coatings, devices for coating liquids on surfaces, special surfaces, etc., can solve the problems of easy whitening of polyurethane clear paint films, and achieve a full and mild feel. , the effect of preventing whitening

Inactive Publication Date: 2011-05-11
上海展辰涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to provide a kind of construction method that prevents the polyurethane transparent paint film from turning white, to overcome the defect that the polyurethane transparent paint film obtained by the existing construction method is prone to whitening

Method used

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  • Construction method for preventing polyurethane clear lacquer film from blushing
  • Construction method for preventing polyurethane clear lacquer film from blushing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The material is a decorative material composed of medium density boards. The construction method for preventing the whitening of the polyurethane transparent paint film on the material comprises the following steps:

[0019] (1) Material sanding: sand the burr of the material with sandpaper, and sand it smooth;

[0020] (2) Material coloring: use the filler Gaglis, wipe it evenly, and dry for 1 hour;

[0021] (3) Sanding: use sandpaper to sand flat and smooth;

[0022] (4) Anti-blushing sealing primer brushing: adjust the viscosity of the anti-blushing sealing primer to 8 seconds with the anti-blushing sealing primer thinner, brush evenly once, and dry for 4 hours;

[0023] (5) Sanding: use sandpaper to sand flat and smooth;

[0024] (6) Polyurethane transparent primer brushing: adjust the viscosity of polyurethane transparent primer to 18 seconds with polyurethane transparent primer diluent, evenly brush a "ten" character, and dry for 6 hours;

[0025] (7) Sanding:...

Embodiment 2

[0032] The material is a decorative material composed of solid wood. The construction method for preventing the whitening of the polyurethane transparent paint film on the material comprises the following steps:

[0033] (1) Material sanding: sand the burr of the material with sandpaper, and sand it smooth;

[0034] (2) Material coloring: use the filler Gaglis, wipe it evenly, and dry for 2 hours;

[0035] (3) Sanding: use sandpaper to sand flat and smooth;

[0036] (4) Anti-blushing sealing primer spraying: adjust the viscosity of the anti-blushing sealing primer to 10 seconds with the anti-blushing sealing primer thinner, spray a "ten" evenly, and dry for 6 hours;

[0037] (5) Sanding: use sandpaper to sand flat and smooth;

[0038] (6) Spraying of polyurethane transparent primer: adjust the viscosity of polyurethane transparent primer to 16 seconds with polyurethane transparent primer thinner, and spray two "ten" characters evenly for 8 hours;

[0039] (7) Sanding: use ...

Embodiment 3

[0045] Embodiment 3 verifies that method of the present invention can effectively prevent the experiment that polyurethane transparent paint paint film turns white

[0046] Randomly select 20 pieces of materials of embodiment 1 and 2 construction treatment respectively, adopt construction method of the present invention to carry out construction, randomly select 10 pieces of products of embodiment 1 and 2 after spraying and be placed in room temperature, humidity is 55%-65% Under atmospheric environment, place one month; Other 10 products of embodiment 1,2 are placed in the constant temperature and humidity test box that temperature is room temperature, humidity is 80%, place one month; During one month, observe and record paint film development White situation. The experimental results are shown in Table 1.

[0047] Table 1

[0048]

[0049]

[0050] Note: "-" indicates that no experiment was performed.

[0051] As can be seen from Table 1, the materials processed by...

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Abstract

The invention relates to a construction method for preventing a polyurethane clear lacquer film from blushing. The method comprises the following steps: step (1), conducting sanding on materials; step (2), conducting coloring on the materials; step (3), brushing or spraying anti-blushing sealing priming lacquer; step (4), brushing or spraying polyurethane clear priming lacquer, and then repeating step (4) for two times; and step (5), brushing or spraying polyurethane clear finishing lacquer, and obtaining the polyurethane clear lacquer film after drying for 24 to 36 hours. Compared with the prior art, the invention has the benefits that the method can effectively prevent the polyurethane clear lacquer film from blushing; after the polyurethane clear lacquer film is placed in the atmospheric environment or in the constant temperature and humidity test chamber for one month after construction, no blushing phenomenon occurs; and the polyurethane clear lacquer film obtained after construction is fresh and natural, has the effect of imitation of natural marble, is tangible in winter and bulky in hand, feels gentle and can meet the demands of decoration.

Description

technical field [0001] The invention relates to a construction method of a polyurethane transparent paint, in particular to a construction method for preventing the whitening of the polyurethane transparent paint film. Background technique [0002] Polyurethane coatings are widely used in furniture decoration and interior decoration because of their excellent adhesion, excellent decorative performance, comprehensive chemical resistance and convenient construction performance. However, due to the construction in an environment with high air humidity, or due to improper pretreatment of the substrate, the polyurethane coating will lose its After the paint film dries, the moisture in the air easily penetrates into the paint film or the moisture in the substrate penetrates into the paint film, and the paint film becomes white, which leads to the unsightly appearance of the painted material and does not meet the requirements. The decorative effect is serious, which will bring gre...

Claims

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Application Information

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IPC IPC(8): B05D5/06B05D3/00B05D3/12B05D1/02B05D7/06C09D175/04
Inventor 刘锋刘志刚周琼辉李婷
Owner 上海展辰涂料有限公司
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