Photocurable aluminum foil anticorrosion coating composition
A technology of anti-corrosion coatings and compositions, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of reducing the curing degree of coatings by adding proportion, environmental friendliness without light curing, poor floating ability of wax powder, etc., to improve the curing effect, The effect of overcoming the problem of oxygen inhibition and improving the density of the coating
Inactive Publication Date: 2017-05-17
SHANGHAI WEIKAI CHEM +2
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Problems solved by technology
However, it is rarely used in light-curing coatings, especially solvent-free light-curing coatings. This is because poor selection of wax powder will lead to poor floating ability of wax powder, which cannot play its due role. Not suitable but will reduce the degree of curing of the coating
[0005] Through the retrieval of existing documents, it was found that China CN102850899A disclosed a light-curing alkali-resistant coating on January 2, 2013. The comprehensive anti-corrosion performance of the coating film was improved by adding solid polymers, but the addition of polymers must Adding a solvent to dissolve does not really reflect the environmental friendliness of light curing
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Embodiment 1～7
[0023] Examples 1-7 relate to a photocurable anticorrosion coating composition for the surface of aluminum foil, including the components and parts by weight shown in Table 1.
[0024] A 100-micron thick aluminum foil is used as the base material, soaked in 5% sodium hydroxide solution for 30 seconds before use, washed with warm water and dried for later use. Pour the paint into the heating trough, heat it to 70°C, use three-roller gluing, and coat the paint on the surface of the treated aluminum foil, control the film thickness to 2 microns, and directly UV cure after coating, with an energy of 800mJ / cm 2 .
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The invention provides a photo-curing aluminum-foil anticorrosive paint composition. The photo-curing aluminum-foil anticorrosive paint composition comprises the following components in parts by weight: 40-60 parts of epoxy acrylate oligomers, 10-30 parts of polyurethane acrylate oligomers, 15-25 parts of acrylate monomers, 4-7 parts of photoinitiators, 1-5 parts of adhesion promoters and 0.2-5 parts of wax powder. Currently, aluminum foil is widely applied to decoration industry, household appliance industry and the like, but is easy to oxidize and poor in scrape resistance and chemical resistance, so that the surface of the aluminum foil needs to be coated with a coating; by virtue of the photo-curing aluminum-foil anticorrosive paint composition, the chemical resistance can be well improved, and furthermore, the system does not contain a solvent, the environmental friendliness is really realized.
Description
technical field [0001] The invention belongs to the field of ultraviolet light curing coatings, in particular to a composition of light curing aluminum foil anticorrosion coatings. Background technique [0002] Nowadays, metal substrates such as aluminum foil are widely used in decorative materials and household appliances. In order to improve the decorative effect and anti-corrosion ability of the metal plate, a layer of paint is usually coated on the surface as a protective layer. For traditional heat-curing coatings, the board needs to be baked at high temperature to achieve the curing of the coating, but the aluminum foil will be deformed due to thermal expansion and contraction, and high-temperature baking will also lead to high electricity costs. [0003] Ultraviolet curing coatings (UV curing coatings) use the energy of ultraviolet light to initiate polymerization and crosslinking reactions between low-molecular prepolymers or oligomers in coatings and monomer molecu...
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IPC IPC(8): C09D4/02C09D5/08
Inventor 虞明东李桐缪慧蒋天龙
Owner SHANGHAI WEIKAI CHEM
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