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Thinner for fluoropolyurethane enamel and spraying method thereof

A technology of fluoropolyurethane enamel and diluent, which is applied in the field of coatings. It can solve problems such as being easily affected by the surrounding environment, uneven color tone, and increased construction difficulty, so as to achieve difficult control of the quality of the paint film, a smooth appearance, and a uniform and continuous paint film. Effect

Active Publication Date: 2018-05-04
FACTORY 5721 OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to reduce the glossiness and the color requirements of the paint, matting agents and pigments of various colors need to be added to component A. During the construction of the paint layer, due to the addition of a lot of fillers, if the paint film dries too fast, the surface will appear rough, or even slightly thicker. There are obvious dry blocks, and there are also problems of uneven color tone and unstable gloss, which increase the difficulty of construction
[0003] Controlling the construction environment such as relatively low temperature (below 18°C) and relatively high humidity (between 65% and 70%) can reduce the occurrence of the above problems, but for large-scale construction operations such as spraying aircraft It is easily affected by the surrounding environment. How to solve the problems of rough paint layer and uneven color tone when applying polyurethane matte enamel paint in a high-temperature and dry environment has become an urgent problem to be solved.

Method used

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  • Thinner for fluoropolyurethane enamel and spraying method thereof
  • Thinner for fluoropolyurethane enamel and spraying method thereof
  • Thinner for fluoropolyurethane enamel and spraying method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The experimental material is No. 12 duralumin, thickness δ1.5, size 100cm×100cm anodized aluminum plate sample, after being cleaned by white cloth dipped in diluent respectively, spray TB06-9 zinc yellow epoxy polyurethane primer, primer The paint thickness is 30μm±5μm, and it is dried at 40℃~50℃ for 6h.

[0025] Fluorine polyurethane enamel is TS96-71 fluorine polyurethane enamel, commercially available

[0026] First, the deployment of paint:

[0027] Step a Weigh the two components of fluoropolyurethane matt enamel according to the specified ratio, add the fluorine-containing hydroxyl resin, dispersant, pigment, matting agent and curing agent in component one into the stirring container in sequence, and while stirring continuously, Slowly add the isocyanate resin of component two to prepare fluoropolyurethane enamel.

[0028] In step b, mix components A and B of the diluent in proportions of 10:0, 10:2, 10:3, 10:4, 10:5, and 10:6, and stir evenly. The mass account...

Embodiment approach

[0034] Take 5 identical aluminum plate samples, and spray 2 coats of topcoat randomly on the test pieces placed on the upper surface of the wing in different construction environments of different temperatures and humidity respectively. The connection width is 50%, and the spray gun distance is 150mm-250mm. In order to ensure the accuracy of the experimental results, the thickness of the topcoat was controlled at 50 μm ± 5 μm, and the painted test piece was dried at 40°C to 50°C for 6 hours. Check and verify the paint adhesion, paint appearance quality and surface drying time of the test piece. The experimental results are shown in Table 2. Among them, the adhesion is tested by the cross-cut method, and the adhesion in this embodiment is 0 grade; the dry time refers to the time required for the surface of a wet paint film of a certain thickness to change from liquid to solid under specified drying conditions . The appearance of the paint film is checked by comparing it with ...

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PUM

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Abstract

Provided is a diluent for fluorinated polyurethane enamel. The diluent is formed by a component A and a component B. The component A comprises, by mass parts, 30-60 parts of methyl n-butyl ketone, 20-40 parts of dimethylbenzene and 20-40 parts of ethyl dither acetic ester; and the component B comprises, by mass parts, 50-70 parts of cyclohexanone, 10-30 parts of butyl acetate and 10-30 parts of dimethylbenzene. The diluent with the component A and the component B becomes a mixed diluent after being mixed, the fluorinated polyurethane enamel can be dispersed evenly in the mixed diluent, the surface drying time of the fluorinated polyurethane enamel is effectively controlled, and a sprayed product has the advantages that the product is flat and smooth in appearance and a paint film is uniform and continuous.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a method for preparing and spraying fluoropolyurethane enamel. Background technique [0002] Fluoropolyurethane matt enamel is widely used in the decoration and protection of aircraft skins due to its excellent light resistance and weather resistance. One component is an isocyanate resin. In order to reduce the glossiness and the color requirements of the paint, matting agents and pigments of various colors need to be added to component A. During the construction of the paint layer, due to the addition of a lot of fillers, if the paint film dries too fast, the surface will appear rough, or even slightly thicker. There are obvious dry blocks, and there are also problems of uneven color tone and unstable gloss, which increase the difficulty of construction. [0003] Controlling the construction environment such as relatively low temperature (below 18°C) and relatively high humid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/20C09D175/04
CPCB05D1/02B05D1/28C09D175/04
Inventor 钮京芳尹东峰王文涛金学龙李安荣田建强
Owner FACTORY 5721 OF PLA
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