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Aqueous gloss oil for high-tolerance aluminum material and preparation method thereof

A water-based varnish and aluminum technology, applied in coatings, polyester coatings, polyurea/polyurethane coatings, etc., can solve the problems of decreased adhesion, shrinkage cavity, elevated temperature, etc., and achieve good adhesion and wide application Foreground, smooth and smooth effect of coating film

Active Publication Date: 2020-06-05
上海安美特铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the later stage, degreasing treatment should be carried out before painting. If the degreasing is not complete, many coating defects will appear, especially in water-based coatings, which will cause fish eyes, shrinkage cavities, adhesion loss or even peeling off.
If you want to completely degrease, you need to increase the temperature, prolong the time, and fully wash with water, which will increase energy consumption and reduce production efficiency.

Method used

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  • Aqueous gloss oil for high-tolerance aluminum material and preparation method thereof
  • Aqueous gloss oil for high-tolerance aluminum material and preparation method thereof
  • Aqueous gloss oil for high-tolerance aluminum material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A water-based varnish for aluminum with high tolerance and a preparation method thereof, comprising the following steps:

[0024] (1) Preparing raw materials: the components and weight percentages of the raw materials are as follows: 1. water-based hydroxyl acrylic resin (model is BLJ6102) 43%, 2. polymerized partially methylated melamine resin (model is CYMEL 325) 10%, 3. advanced Alcohol defoamer (3-heptanol) 0.5%, ④ acetylene glycol wetting agent 1%, ⑤ octanylphenol polyoxyethylene ether 0.6%, ⑥ aminosilane 0.6%, ⑦ BIT 0.2%, ⑧ deionized water 44.1%.

[0025] (2) Preparation process: Add components ⑧, ③, ⑦, ② into the reactor in turn, stir at a slow speed for 10 minutes, then add components ④, ⑤, ⑥, ①, and continue stirring for 20 minutes to obtain the coating.

[0026] (3) Construction method: Spray coating and roller coating can be used, and the drying condition is 5-30 minutes at 120-180°C.

[0027] Implementation column 2

[0028] A water-based varnish for alum...

Embodiment 3

[0033] A water-based varnish for aluminum with high tolerance and a preparation method thereof, comprising the following steps:

[0034] (6) Prepare raw materials: each component of raw materials and weight percent thereof are as follows: 1. water-based hydroxyl polyester resin (model is KN8245W) 35%, 2. methyl etherified melamine resin (model is CYMEL 303) 15%, 3. organosilicon disinfectant Foaming agent (model MOUSSEX S 8044) 0.2%, ④ acetylene glycol wetting agent 0.5%, ⑤ sodium dodecylbenzene sulfonate 3%, ⑥ aminosilane 2%, ⑦ BIT 0.1%, ⑧ deionized water 44.2 %.

[0035] (7) Preparation process: add components ⑧, ③, ⑦, ② into the reactor in turn, stir at a slow speed for 10 minutes, then add components ④, ⑤, ⑥, ①, and continue stirring for 20 minutes to obtain the coating.

[0036] (8) Construction method: Spray coating and roller coating can be used, and the drying condition is 5-30 minutes at 120-180°C.

Embodiment 4

[0038] A water-based varnish for aluminum with high tolerance and a preparation method thereof, comprising the following steps:

[0039] (9) Preparing raw materials: each component of the raw material and its weight percentage are as follows: 1. water-based hydroxy alkyd resin (model is FX-W6001) 65%, 2. polymerized high imino high methyl etherification melamine resin (model is CYMEL 327 ) 8%, ③ higher alcohol defoamer (3-heptanol) 1%, ④ acetylene glycol wetting agent 2%, ⑤ sorbitan trioleate 2%, ⑥ aminosilane 0.3%, ⑦ BIT 0.5 %, ⑧ deionized water 21.2%.

[0040] (10) Preparation process: add components ⑧, ③, ⑦, ② into the reactor in turn, stir at a slow speed for 10 minutes, then add components ④, ⑤, ⑥, ①, and continue stirring for 20 minutes to obtain the coating.

[0041] (11) Construction method: Spray coating and roller coating can be used, and the drying condition is 5-30 minutes at 120-180°C.

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Abstract

The invention provides an aqueous gloss oil for a high-tolerance aluminum material and a preparation method thereof. The aqueous gloss oil comprises the following components in percentage by mass: 35-65% of aqueous hydroxyl resin, 8-15% of aqueous amino resin, 0.2-1% of a defoaming agent, 0.5-2% of a wetting agent, 0.6-3% of an interface aid, 0.3-2% of an adhesion promoter, 0.1-0.5% of a preservative and 18-55% of water. The aqueous gloss oil is an aqueous baking varnish system, is safe and environment-friendly, has no abnormality after 1000 hours of neutral salt mist, has no pulverization oryellowing after 2000 hours of aging of a xenon lamp, is smooth and flat in coating on an incompletely degreased aluminum material, and has a good adhesive force. The aqueous gloss oil is used for continuous coating of aluminum coils, is used in the decoration field, and has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of coating materials, in particular to a water-based varnish for aluminum materials with high tolerance and a preparation method thereof. Background technique [0002] Aluminum coils will use rolling oil during the rolling process, especially mirror-finished aluminum coils will use more rolling oil during finish rolling, so a lot of grease will remain on the surface of the aluminum. In the later stage, degreasing treatment should be carried out before painting. If the degreasing is not complete, many coating defects will appear, especially in water-based coatings, which will cause fish eyes, shrinkage cavities, adhesion loss or even peeling off. If you want to completely degrease, you need to increase the temperature, prolong the time, and fully wash with water, which will cause increased energy consumption and reduced production efficiency. Contents of the invention [0003] In order to solve the above-m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D161/32C09D175/04C09D167/00C09D167/08C09D7/63C09D7/65
CPCC09D133/04C09D175/04C09D167/00C09D167/08C09D7/63C09D7/65C08L2201/08C08L61/32C08L71/02C08K5/544C08K5/1535C08K5/5435C08K5/42
Inventor 李凡李立群
Owner 上海安美特铝业有限公司
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