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A processing method of composite coated diffuse reflective aluminum plate

A processing method and composite coating technology, applied in coatings, metal processing equipment, reflective/signal coatings, etc., can solve the problems of point light source glare weakening, low diffuse reflectance, glare, etc., and achieve precise control of paint film thickness , Improve the effect of light diffuse reflectance and high diffuse reflectance

Active Publication Date: 2021-09-17
浙江铭岛新材料股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The LED lighting industry has been widely popularized in daily life due to its advantages of energy saving and environmental protection, especially the energy-saving effect of LED lighting. However, LED lighting generally uses high-power chips. The beam of light is reflected on various points of the reflective surface and applied to the lamp, so it is naturally quite irritating to the naked eye, which is easy to cause glare. For the reflective panel of LED lamps, aluminum plate is a common material. In order to solve the glare phenomenon , the traditional method is to coat the surface of the aluminum plate with diffuse reflection materials, such as high-reflectivity polymer materials such as PET and other materials, but their glass transition temperature and melting point are high and difficult to process. Therefore, diffuse reflection coatings are generally used , to improve the diffuse reflection performance, and the glare reduction of point light sources is limited. However, the existing reflective coatings have low diffuse reflectance to light, poor utilization of light, and most of them use spraying technology, so the production efficiency is low.
For example, the existing coatings usually use polyvinyl alcohol as the bonding substrate, and mix materials such as barium sulfate particles and defoamers as coatings. However, it is mainly for the adjustment of the coating itself, and the diffuse reflectance is not ideal.
Another example is a kind of fast-curing diffuse reflective coating disclosed by Chinese patent (authorized announcement number: CN106833302B) and its preparation method, with polyester 25-30%; amino resin 5-7%; barium sulfate powder 50-55%, acid catalyst 1.5-2.0%, as well as dispersants, leveling agents, defoamers and solvents, have fast curing, and the reflectivity can reach about 95%. However, it is directly coated on the surface of the material board, and the method of direct coating, Especially on the surface of metal materials such as aluminum plates, it is easy to fall off, and it is not conducive to production and processing

Method used

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  • A processing method of composite coated diffuse reflective aluminum plate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In this embodiment, an aluminum coil with a thickness of 0.3mm is selected for surface treatment, and the specific processing method is as follows:

[0033] Unfold the aluminum strip of the selected aluminum coil, pass through the tension mechanism, and then make the aluminum strip go through alkali washing, pickling neutralization and water washing at room temperature to remove impurities and oil stains on the surface of the aluminum strip, after drying , immerse the aluminum strip in an organosilane solution for surface silane treatment, where the organosilane in the organosilane solution is a mixture of glycidyloxypropyltrimethylsilane and aminopropyltriethoxysilane, and the organosilane solution The solvent used is ethanol or methanol, which can be diluted with water. Among them, the content of glycidyloxypropyl trimethylsilane and aminopropyl triethoxysilane in the organosilane liquid is 20%. After passing through the organosilane liquid, bake Dry to form a dense s...

Embodiment 2

[0039] In this embodiment, an aluminum coil with a thickness of 0.3mm is selected for surface treatment, and the specific processing method is as follows:

[0040] Unfold the aluminum strip of the selected aluminum coil, pass through the tension mechanism, and then make the aluminum strip go through alkali washing, pickling neutralization and water washing at room temperature to remove impurities and oil stains on the surface of the aluminum strip, after drying , immerse the aluminum strip in an organosilane solution for surface silane treatment, where the organosilane in the organosilane solution is a mixture of glycidyloxypropyltrimethylsilane and aminopropyltriethoxysilane, and the organosilane solution The solvent used is ethanol or methanol, which can be diluted with water; among them, the content of glycidyloxypropyl trimethylsilane and aminopropyl triethoxysilane in the organosilane liquid is 15%, after passing through the organosilane liquid, drying Dry to form a dense...

Embodiment 3

[0046] The processing method of the composite coated diffuse reflection aluminum plate of the present embodiment is consistent with embodiment 1, and the difference mainly lies in that the high diffuse reflection polyester coating wherein adopts the mass percent of following composition:

[0047]German Evonik resin 436#: 28%; DuPont titanium dioxide R-706#: 32%; Cytec crosslinking agent 303: 20%; Clariant catalyst 405: 0.6%; German BYK defoamer 088: 0.6%; German BYK leveling agent 310: 0.6%; the balance is environmentally friendly solvent DBE (dimethyl nylon acid).

[0048] Among the polyester coatings containing random glass beads, the polyester coating used is the same as the material of the high diffuse reflection polyester coating in this embodiment, mainly because random glass beads particles are added therein, and the addition amount 12%. Other operations in the processing method of this embodiment are consistent with those of the embodiment, and will not be repeated he...

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Abstract

The invention relates to a processing method for a composite coated diffuse reflective aluminum plate, which belongs to the technical field of aluminum plate surface treatment. In order to solve the existing problems of poor diffuse reflectance and poor adhesion, a method for processing a composite coated diffuse reflective aluminum plate is provided, the aluminum plate includes a front side and a back side, and a back paint protective layer is coated on the back surface of the aluminum plate , also includes cleaning the aluminum plate to be processed, using organosilane liquid to silane-treat the surface of the aluminum plate, forming a silane film on the surface of the aluminum plate; The front surface of the aluminum plate is baked to form a high diffuse reflection polyester coating layer; and then the polyester coating containing random glass beads is rolled on the surface of the high diffuse reflection polyester coating layer. The surface of the diffuse reflective polyester paint layer is covered with a polyester coating containing random glass beads. The invention can realize high diffuse reflectance; and the adhesion between the aluminum plate and the coating is good.

Description

technical field [0001] The invention relates to a processing method for a composite coated diffuse reflective aluminum plate, which belongs to the technical field of aluminum plate surface treatment. Background technique [0002] The LED lighting industry has been widely popularized in daily life due to its advantages of energy saving and environmental protection, especially the energy-saving effect of LED lighting. However, LED lighting generally uses high-power chips. The beam of light is reflected on various points of the reflective surface and applied to the lamp, so it is naturally quite irritating to the naked eye, which is easy to cause glare. For the reflective panel of LED lamps, aluminum plate is a common material. In order to solve the glare phenomenon , the traditional method is to coat the surface of the aluminum plate with diffuse reflection materials, such as high-reflectivity polymer materials such as PET and other materials, but their glass transition temper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/08C09D5/33C09D167/00B24C11/00B24C7/00B24C1/04
CPCB24C1/04B24C7/0061B24C11/00C08G77/26C08K2003/2241C09D4/00C09D5/004C09D167/00C09D183/08C08K7/20C08K3/22
Inventor 张灵生项玲辉陈朔裕章以中
Owner 浙江铭岛新材料股份有限公司