Medium-temperature baking type fluorine-carbon paint and its use method

A fluorocarbon paint, medium temperature technology, applied in the direction of coating, pretreatment of the surface, and the device for coating liquid on the surface, etc., can solve the problems of gaps, high energy consumption, etc., to improve production efficiency, reduce energy consumption, and beautiful coating The effect of appearance

Active Publication Date: 2008-12-10
SHENZHEN GRANDLAND ENVIRONMENTAL COATING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The few national invention patents of medium and low temperature fluorocarbon baking varnishes that have been published all use trifluoro resins and amino resins or blocked isocyanate resins to cross-link and cure to form films, which effectively solve the problems of hi

Method used

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  • Medium-temperature baking type fluorine-carbon paint and its use method
  • Medium-temperature baking type fluorine-carbon paint and its use method
  • Medium-temperature baking type fluorine-carbon paint and its use method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] Preparation of medium-temperature baking type fluorocarbon varnish: Take fluororesin, 20% CAB551-0.2, and amino resin in the components according to the weight ratio shown in Example 1 in Table 1, stir and mix evenly at a low to medium speed, and then add the fluid Leveling agent, acid catalyst, butyl acetate, methyl isobutyl ketone, propylene glycol methyl ether acetate, mixed evenly at low to medium speed for 15-20 minutes, filtered through a 120-mesh filter after passing the inspection, and packaged to obtain Medium temperature baking fluorocarbon varnish.

[0101] Prepare the thinner supporting the fluorocarbon varnish according to the following components and weight ratio:

[0102] Xylene 50

[0103] Methyl isobutyl ketone 17

[0104] Propylene glycol methyl ether acetate 25

[0105] DBE 8,

[0106] Add the above four solvents into the production container according to the ratio, stir at a low speed for 5-10 minutes, filter through a 400-mesh filter, and pack t...

Embodiment 2

[0109] According to the weight ratio and components shown in Example 2 in Table 1, prepare and use the medium temperature baking type fluorocarbon varnish and supporting diluent according to the method of Example 1 to obtain the fluorocarbon varnish film. Routine performance test results (dry film thickness 20-26μm, recoated total dry film thickness 30-40μm) are shown in Table 6.

Embodiment 3

[0111] According to the weight ratio and components shown in Example 3 in Table 1, prepare and use the medium temperature baking type fluorocarbon varnish and supporting diluent according to the method of Example 1 to obtain the fluorocarbon varnish film. Routine performance test results (dry film thickness 20-26μm, recoated total dry film thickness 30-40μm) are shown in Table 6.

[0112] Table 2 shows the components and weight ratios of the medium-temperature baking type fluorocarbon paint high-gloss white paint prepared in Examples 4-6.

[0113] Table II

[0114]

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Abstract

The invention provides moderate temperature baking type fluorocarbon lacquer. The compositions in portion by weight of the fluorocarbon lacquer are: 40 to 70 portions of fluororesin, 10 to 15 portions of aminoresin, 2 to 10 portions of 20 percent CAB551-0.2, 0.4 to 0.8 portions of acid catalysis, 0.05 to 0.15 portions of flatting agent, 15 to 25 portions of mixed solvent, 0 to 35 portions of pigment, 0 to 2 portions of dispersing agent, 0 to 0.6 portions of anti-settling agent, 0 to 3 portions of UV light stabilizer and 0 to 8 portions of dulling agent, wherein the fluororesin is a polymer of tetrafluoroethylene/vinyl ether monomer with the content of fluorine of between 35 and 40 percent; the aminoresin is hexamethoxymethyl melamine resin with the content of solid more than or equal to 98 percent; and the pigment reaches to eight grade in lightfastness and five grade in weathering resistance, and can resist a high temperature of more than 180 DEG C. When used, the fluorocarbon lacquer is mixed evenly with a diluent agent formed by mixed xylene, methyl isobutyl ketone, propylene glycol methyl ether acetate and DBE according to a weight ratio of between 1:0.4 and 1:0.6 so as to carry out spray coating. The moderate temperature baking type fluorocarbon lacquer has better weathering resistance than PVDF fluorocarbon lacquer as well as high hardness, abrasion resistance, impact resistance, excellent bending resistance and wide color selection range; moreover, the baking type fluorocarbon lacquer has excellent workability and ply adhesion, and does not need special treatment during recoating.

Description

technical field [0001] The invention relates to a medium temperature baking type fluorocarbon paint and its application method. Background technique [0002] PVDF type fluorocarbon paint is mostly used for surface protection and decoration of aluminum curtain wall panels, steel plates, and metal profiles for construction, and acrylic amino or polyester amino baking varnishes are used for occasions that do not require high weather resistance. PVDF-type fluorocarbon paint has very good outdoor weather resistance, and the outdoor service life can reach more than 20 years. However, because PVDF-type fluorocarbon paint needs to be baked at a high temperature above 230°C, the energy consumption is high and the production cost is high. The baking temperature limits the use of many pigments, especially most organic pigments, so the color is monotonous. Although acrylic amino baking varnish or polyester amino baking varnish is baked and dried at 120-160°C, its weather resistance is ...

Claims

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Application Information

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IPC IPC(8): C09D127/18B05D3/02C09D161/28
Inventor 胡基如
Owner SHENZHEN GRANDLAND ENVIRONMENTAL COATING CO LTD
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