A glue for gold dust powder coating and a preparation method thereof

Abstract

This invention provides a mortar for coating glitter powder and its preparation method. It consists of 67%-69% deionized water; polyvinyl alcohol; vinyl acetate-ethylene copolymer emulsion; thickener; defoamer; emulsifier; wetting agent; and silicone-modified acrylate emulsion. The finished product has strong encapsulation and adhesion, firmly fixing the glitter powder and preventing peeling and powder loss. The cured film is tough, highly transparent, and highly glossy, ensuring the glitter effect of the glitter powder and the clarity of the finished product surface, thus enhancing the product's visual appeal.

Description

Technical Field

[0001] This invention relates to the field of printing paste technology, specifically to a paste for coating glitter powder and its preparation method. Background Technology

[0002] Glitter powder coating is a decorative process in which glitter powder is uniformly adhered to the surface of a substrate using an adhesive. Coating methods include screen printing, squeegee coating, and spraying. The core of this process is using an adhesive as a carrier to adhere the glitter powder to the surface of fabrics, paper, plastics, metals, or handicrafts, enhancing the visual effect of the product and giving it a shiny, three-dimensional gloss. Existing glitter powder coating adhesives are typically water-based, environmentally friendly polymer adhesives with acrylic copolymers as the main component. However, due to factors such as material ratios and processing techniques, their adhesion, transparency, and stability are relatively poor, leading to problems such as powder shedding, stickiness, and uneven gloss in the finished product, affecting product quality. Summary of the Invention

[0003] In view of the defects of existing glitter powder coating pastes, the technical problem to be solved by the present invention is to provide a paste for glitter powder coating and a preparation method thereof, which has strong adhesion, is not easy to shed powder or color, and has a strong gloss, thereby improving the visual effect of the product.

[0004] To achieve the above objectives, according to one aspect of the present invention, the invention is achieved by the following technical measures: a paste for coating glitter powder, comprising the following components in parts by weight: 67%-69% deionized water; 3%-5% polyvinyl alcohol; 10%-11% vinyl acetate-ethylene copolymer emulsion; 0.4%-0.5% thickener; 0.2% defoamer; 0.4% emulsifier; 5% wetting agent; and 10%-11% silicone-modified acrylate emulsion.

[0005] Furthermore, the polyvinyl alcohol is designated as PVA2099.

[0006] Furthermore, the vinyl acetate-ethylene copolymer emulsion is designated as VAE806.

[0007] Furthermore, the thickener is hydroxypropyl ethyl cellulose (HPEC).

[0008] Furthermore, the defoamer includes a silicone polyether composite defoamer and a non-silicone defoamer, with a ratio of approximately 1:1.

[0009] Furthermore, the emulsifier is sodium fatty alcohol polyoxyethylene ether sulfate (AES).

[0010] Furthermore, the wetting agent is ethylene glycol.

[0011] A method for preparing a coating paste for glitter powder includes the following steps: S1. Measure each raw material according to the mass ratio, add deionized water to the mixing and dispersing vessel, and start uniform stirring; S2. Slowly add polyvinyl alcohol while stirring, and stir until there are no clumps. S3. Add thickener and heat to 94°C. Stir at this temperature for 50 minutes until completely dissolved, then stop heating. S4. After cooling to below 47°C, add the following in sequence: silicone polyether composite defoamer, emulsifier, wetting agent, vinyl acetate-ethylene copolymer emulsion, and non-silicone defoamer.

[0012] S5. Stir for 20 minutes, filter the material through a 100-mesh screen and seal for storage.

[0013] Compared with the prior art, the advantages of the present invention are as follows: 1. Polyvinyl alcohol can improve the coating and adhesion of glitter powder particles, and AES emulsifier can improve the adhesion of the adhesive to the substrate. Therefore, the glitter powder can be firmly fixed and avoid peeling and powdering. 2. VAE806 can be well mixed with various water-based components such as thickener HPEC, emulsifier AES, and non-silicone defoamers without agglomeration or stratification. After curing, it forms a tough and highly transparent film that does not obscure the glitter effect of glitter powder and enhances its gloss. 3. The silicone polyether composite defoamer can quickly diffuse to the surface of the foam film, destroying its stability and achieving bubble breaking in seconds, while continuously inhibiting the formation of new foam, ensuring that the finished product has a bright and glossy surface. 4. Organosilicon-modified acrylic emulsions can give the glitter film good hydrophobicity and anti-fouling properties, which can significantly reduce the adhesion of water, oil or dust to the surface of glitter powder and keep the shiny effect as good as new for a long time. Detailed Implementation

[0014] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.

[0015] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "bottom", "top", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0016] This embodiment provides a mortar for coating glitter powder, with a total formulation of 10 kg, specifically including 6900 g of deionized water, 489 g of polyvinyl alcohol (PVA2099), 1 kg of vinyl acetate-ethylene copolymer emulsion (VAE806), 50 g of hydroxypropyl ethyl cellulose (HPEC), 11 g of silicone polyether composite defoamer, 10 g of non-silicone defoamer, 40 g of fatty alcohol polyoxyethylene ether sulfate (AES) emulsifier, 500 g of ethylene glycol, and 1 kg of organosilicon modified acrylate emulsion.

[0017] This embodiment also provides a method for preparing a glitter powder coating paste, the specific steps of which are as follows: S1. First, add 6900g of deionized water to the mixing and dispersing vessel and start uniform stirring; S2. While stirring, slowly add 489g of PVA2099 and stir until there are no lumps. S3. Add 50g HPEC and heat to 94℃. Stir at this temperature for 50 minutes until completely dissolved, then stop heating. S4. After cooling to below 47℃, add 11g of silicone polyether composite defoamer, 40g of AES emulsifier, 500g of ethylene glycol, 1kg of VAE806 emulsion, and 10g of non-silicone defoamer in sequence. S5. Stir for 20 minutes, then filter the material through a 100-mesh screen and seal for storage.

[0018] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various changes and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A paste for coating glitter powder, characterized in that: It comprises the following components in parts by weight: 67%-69% deionized water; 3%-5% polyvinyl alcohol; 10%-11% vinyl acetate-ethylene copolymer emulsion; 0.4%-0.5% thickener; 0.2% defoamer; 0.4% emulsifier; 5% wetting agent; and 10%-11% silicone-modified acrylate emulsion.

2. The adhesive for coating glitter powder according to claim 1, characterized in that: The polyvinyl alcohol is designated as PVA2099.

3. The adhesive for coating glitter powder according to claim 1, characterized in that: The vinyl acetate-ethylene copolymer emulsion is designated as VAE806.

4. The adhesive for coating glitter powder according to claim 1, characterized in that: The thickener is hydroxypropyl ethyl cellulose (HPEC).

5. The adhesive for coating glitter powder according to claim 1, characterized in that: The defoamer includes a silicone polyether composite defoamer and a non-silicone defoamer, with a ratio of approximately 1:

1.

6. The adhesive for coating glitter powder according to claim 1, characterized in that: The emulsifier is sodium fatty alcohol polyoxyethylene ether sulfate (AES).

7. The adhesive for coating glitter powder according to claim 1, characterized in that: The wetting agent is ethylene glycol.

8. A method for preparing a coating paste for glitter powder, characterized in that: Includes the following steps: S1. Measure each raw material according to the mass ratio, add deionized water to the mixing and dispersing vessel, and start uniform stirring; S2. Slowly add polyvinyl alcohol while stirring, and stir until there are no clumps. S3. Add thickener and heat to 94°C. Stir at this temperature for 50 minutes until completely dissolved, then stop heating. S4. After cooling to below 47°C, add the following in sequence: silicone polyether composite defoamer, emulsifier, wetting agent, vinyl acetate-ethylene copolymer emulsion, and non-silicone defoamer. S5. Stir for 20 minutes, filter the material through a 100-mesh screen and seal for storage.