A kind of anti-oxidizing disinfectant corrosion epoxy primer, modified polyester topcoat, color-coated steel plate and color-coated steel plate manufacturing process
A technology of oxidation resistance, color-coated steel plate, applied in polyester coating, epoxy resin coating, metal material coating process, etc. The effect of medium corrosion ability, strong pertinence and good machinability
Active Publication Date: 2021-12-14
MAANSHAN IRON & STEEL CO LTD
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Problems solved by technology
[0006] Aiming at the problem that the existing color-coated steel sheets cannot meet the corrosion resistance of strong oxidants, the present invention provides an epoxy primer resistant to corrosion by oxidative disinfectants and a modified polyester topcoat resistant to corrosion by oxidative disinfectants. Use the color-coated steel plate that is corrosion-resistant to oxidative disinfectants, and improve the composition of the paint in the coating on the color-coated steel plate to obtain a color-coated steel plate that is resistant to corrosion by oxidative disinfectants
Method used
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Embodiment
[0070] The dry film composition of a kind of anti-oxidant disinfectant corrosion epoxy primer, polyester topcoat, epoxy back paint of each embodiment is as shown in table 2
[0071] The formula of table 2 embodiment and comparative example
[0072]
[0073]
[0074] Select the coating weight as 120g / m 2 (Double-sided) hot-dip galvanized steel plate as color pre-coated substrate 1, the process of preparing color-coated steel plate: galvanized plate-degreasing-cleaning-passivation-front and back primer coating-curing-front topcoat Coating—solidification—cooling—inspection—coiling, to make the color-coated steel sheets of Examples 1 to 3 and Comparative Examples, wherein the film thickness of the front primer is controlled at 5 to 7 μm, and the film thickness of the front top coat is controlled at 15 μm. ~17μm, and the film thickness of the back paint is controlled at 5~12μm.
[0075] Specifically, the steps in the manufacturing process of the color-coated steel plate cor...
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Abstract
The invention discloses an epoxy primer, a modified polyester topcoat, a color-coated steel plate and a manufacturing process for the color-coated steel plate, which are corrosion-resistant to oxidizing disinfectants, and belongs to the field of surface treatment of metal materials. Epoxy primer mainly includes epoxy resin, coloring pigment and antirust pigment, leveling agent, wetting agent, defoamer and film-forming aid; modified polyester topcoat mainly includes first saturated polyester, second Modified saturated polyester, coloring pigment, leveling agent, wetting agent, defoamer, special additive for medium corrosion resistance; color-coated steel plate includes substrate, which is characterized in that: the front of the substrate is coated with the first A protective film, an epoxy primer layer, and a modified polyester topcoat layer is also coated on the epoxy primer layer; the back of the substrate is coated with a second protective film and an epoxy backcoat layer from top to bottom, wherein the The main component of the oxygen back paint layer is epoxy resin; the color-coated steel plate manufacturing process includes cleaning, passivation, front and back primer coating, curing, front top paint coating, curing, cooling, inspection and coiling.
Description
technical field [0001] The invention belongs to the field of surface treatment of metal materials, and relates to a production process of a low-carbon steel color pre-coated steel plate, in particular to a functional color-coated steel plate resistant to oxidation and disinfectant corrosion and a manufacturing method thereof. Background technique [0002] With the development of color-coated steel plate production, processing and application technology, the variety structure of color-coated steel plate for various industrial plant enclosures is also constantly optimized and upgraded. In special fields such as medical care and food processing, a large number of production workshops are newly built or renovated every year, and the demand for color-coated steel sheets exceeds 50,000 tons per year. However, in these special industries, due to the relatively high requirements on the control of environmental bacteria growth and cleanliness, it is necessary to regularly use hydroge...
Claims
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IPC IPC(8): C09D163/00C09D5/10C09D5/08C09D167/00C22C38/02C22C38/04C22C38/06C23C22/68C23G1/19C23G3/02
CPCC09D163/00C09D5/103C09D5/106C09D5/084C09D167/00C09D5/08C22C38/02C22C38/04C22C38/002C22C38/06C23C22/68C23G3/024C23G1/19C08L2205/025C08L67/00C08K13/02C08K5/103C08K5/10
Inventor 许倩施国兰谷曦汤晓东刘斌钱婷婷蔡明许钦伸何峰
Owner MAANSHAN IRON & STEEL CO LTD
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