Glass ceramic metallization UV vacuum plating coating and preparation process thereof

Abstract

The present invention discloses a glass ceramic metallization UV vacuum plating coating and a preparation process thereof, and relates to the technical field of coatings, the glass ceramic metallization UV vacuum plating coating comprises the following components by mass: 5-20 parts of a 2-functional special modified epoxy acrylate resin, 5-10 parts of a 2-functional aliphatic polyurethane acrylate resin, 2-5 parts of a 6-functional aliphatic polyurethane acrylate resin, 5-15 parts of a polyester acrylic resin, 5-10 parts of an acrylic resin, and the balance of a solvent. The coating is prepared from the following components in parts by weight: 10 to 13 parts of trifunctional acrylate monomer, 2 to 5 parts of monofunctional acrylate monomer, 1 to 3 parts of phosphate, 2 to 5 parts of 1-hydroxycyclohexyl phenyl ketone, 0.5 to 2 parts of benzoin dimethyl ether, 0.1 to 0.3 part of flatting agent, 20 to 30 parts of ethyl acetate, 10 to 20 parts of butyl acetate and 5 to 10 parts of propylene glycol methyl ether acetate. The epoxy acrylate oligomer, the aliphatic polyurethane acrylate and the polyester acrylate which are high in performance and mature in process are mainly selected as main film forming substances and are good in miscibility, a cured paint film is high in compactness and good in developability, and a trifunctional acrylate monomer is matched and is high in reactivity, so that the film forming effect is good. The high crosslinking density ensures that a paint film has enough brightness and fullness so as to ensure the physical and chemical properties of a product, and meanwhile, the constructability such as a leveling effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of coatings, in particular to a glass ceramic metallized UV vacuum plating coating and a preparation process thereof. Background Art

[0002] At present, the main types of glass vacuum plating are thermosetting and UV-curing, which are mainly used for the beautification and protection of cosmetic glass packaging containers and wine glass packaging containers. As people's requirements for energy saving and efficiency improvement continue to increase, traditional thermosetting glass vacuum plating coatings will be slowly replaced by UV-curing glass vacuum plating coatings. UV-curing glass vacuum plating coatings have been widely used in cosmetics and wine packaging, and higher requirements have been put forward for the water resistance and heat resistance of coatings. This technology is mainly used for spraying on the outside of glass bottles for cosmetics and wine packaging, and can withstand high temperatures of 180°C for more than one hour. With the development of science and technology, UV-curing glass ceramic vacuum plating coating technology has also been continuously improved and innovated, making it more flexible and efficient in application. At present, in the field of UV-curing glass vacuum plating coating technology, the main development trends are as follows:

[0003] 1. Material research and development: Develop more efficient and environmentally friendly UV coatings to meet the market's increasing requirements for environmental protection and health;

[0004] 2. Performance improvement: improve product performance stability;

[0005] 3. Process optimization: optimize process parameters to improve the product's construction performance on different lines. Summary of the invention

[0006] The purpose of the present invention is to provide a glass ceramic metallized UV vacuum plating coating and a preparation process thereof, aiming to solve some problems in the prior art. The general UV-curable glass ceramic vacuum plating coating mainly has the problems of not being able to withstand high temperatures, bubbling or paint peeling after high temperatures, etc. The main method is to select high-performance, mature process epoxy acrylate oligomers, aliphatic polyurethane acrylates, and polyester acrylates as main film-forming substances. The three have good miscibility, and the paint film has high density and good developability after curing. In combination with a trifunctional acrylate monomer, its high reactivity and high cross-linking density ensure that the paint film has sufficient brightness and fullness to ensure the physical and chemical properties of the product, while improving the construction properties such as leveling effect.

[0007] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0008] A glass ceramic metallized UV vacuum coating comprises the following components in parts by weight:

[0009]

[0010]

[0011] Preferably, the 3-official specially modified pure acrylate resin is CR91192 modified epoxy acrylate produced by Guangdong Haohui New Materials Co., Ltd.; the 2-official aliphatic polyurethane acrylate resin is Changxing 6185; and the 6-official aliphatic polyurethane acrylate resin is Changxing 6145-100.

[0012] Preferably, the polyester acrylate resin is Changxing 6316; the trifunctional acrylate monomer is Changxing EM235C; and the monofunctional acrylate monomer is Changxing EM90.

[0013] Preferably, the phosphate ester is Sartomer SR9051; the 1-hydroxycyclohexyl phenyl ketone is Tianjin Jiuri 1104, and the benzoin dimethyl ether is Tianjin Jiuri 1065.

[0014] Preferably, the leveling agent is Rad 2100 from Digo; the ethyl acetate is ethyl acetate from Jiangmen Qianxin; the butyl acetate is butyl acetate from Jiangmen Qianxin; and the propylene glycol methyl ether acetate is propylene glycol methyl ether acetate from Yida Co., Ltd.

[0015] A preparation process of a glass ceramic metallized UV vacuum coating, which is applied to any of the above glass ceramic metallized UV vacuum coatings, comprises the following steps:

[0016] S1: Select the production cylinder, confirm that the inner wall of the cylinder has been cleaned and the discharge valve is closed;

[0017] S2: Add 2-official special modified epoxy acrylate resin, 2-official aliphatic polyurethane acrylate resin, 6-official aliphatic polyurethane acrylate resin, polyester acrylate resin, 3-official acrylate monomer, mono-official acrylate monomer, phosphate ester, 1-hydroxycyclohexyl phenyl ketone, benzoin dimethyl ether and leveling agent into the production tank, and disperse for 25-30 minutes with a high-speed disperser, wherein the high-speed dispersion speed of the disperser is 1500±200 rpm;

[0018] S3: Add ethyl acetate, butyl acetate and propylene glycol methyl ether acetate into the production tank, and disperse them at a low speed of 500±100 rpm for 10-15 minutes using a disperser.

[0019] S4: The paint that has completed step 3 is defined as the finished paint, and a proper amount of the finished paint is randomly taken for testing, and the rest of the finished paint is packaged;

[0020] S5: Evaluate the paint and paint film that have completed the test in step S4 according to HG / T 3655-2012.

[0021] Preferably, in step S4, the finished paint is tested, including the following steps: selecting glass → dust and oil removal → spraying UV glass electroplating primer → UV mercury lamp curing and drying → electroplating → spraying UV electroplating topcoat, and performing corresponding performance tests after the product is cooled.

[0022] Preferably, the spray-on UV glass electroplating primer has a construction viscosity of 9.5-10 seconds and a construction film thickness of 20-30 μm.

[0023] Preferably, the UV curing lamp is fully dry, and the energy is 800-1500mJ / cm 2 .

[0024] The glass ceramic metallization UV vacuum plating coating and its preparation process of the present invention have the following beneficial effects:

[0025] 1. The glass ceramic metallization UV vacuum plating coating of the present invention is mainly prepared by selecting high-performance, mature process special modified epoxy acrylate oligomers, aliphatic polyurethane acrylates, and polyester acrylates as the main film-forming substances. The three have good miscibility, and the paint film has high density and good developability after curing. In addition, the trifunctional acrylate monomer is matched with the high reactivity and high cross-linking density to ensure that the paint film has sufficient brightness and fullness, so as to ensure the physical and chemical properties of the product, and at the same time improve the construction properties such as leveling effect;

[0026] 2. The glass ceramic metallized UV vacuum plating coating of the present invention selects a wetting and leveling agent to balance the wetting of the material, thereby improving the self-leveling property of the paint itself, improving the surface adhesion, improving the tolerance of product construction and improving the surface performance of the paint film, while balancing the plating property, recoating property and temperature-resistant adhesion stability of the primer;

[0027] 3. The preparation process of the glass ceramic metallized UV vacuum plating coating of the present invention mainly adopts the cross-test method in the testing process to simulate the construction process and the use process. The most important thing is to test different coating amounts, different construction viscosities and different infrared leveling times to select the best and most suitable construction parameters. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the product of the present invention is further described in detail below in conjunction with embodiments.

[0029] It should be noted that all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] A glass ceramic metallized UV vacuum coating comprises the following components in parts by weight:

[0031] 2-functional special modified epoxy acrylate resin 5-20;

[0032] 2-functional aliphatic polyurethane acrylate resin 5-10;

[0033] 6-functional aliphatic polyurethane acrylate resin 2-5;

[0034] Polyester acrylic resin 5-15;

[0035]

[0036] Preferably, the 2-official special modified epoxy acrylate resin adopts CR91192 of Guangdong Haohui New Materials Co., Ltd.; the 2-official aliphatic polyurethane acrylate resin adopts Changxing 6185; the 6-official aliphatic polyurethane acrylate resin adopts Changxing 6145-100. The polyester acrylic resin adopts Changxing 6316; the 3-official acrylate monomer adopts Changxing EM235C; the mono-official acrylate monomer adopts Changxing EM90. The phosphate ester adopts Sartomer SR9051; the 1-hydroxycyclohexyl phenyl ketone adopts Tianjin Jiuri 1104, and the benzoin dimethyl ether adopts Tianjin Jiuri 1065. The leveling agent adopts Digao Rad 2100; the ethyl acetate adopts ethyl acetate of Jiangmen Qianxin; the butyl acetate adopts butyl acetate of Jiangmen Qianxin; the propylene glycol methyl ether acetate adopts propylene glycol methyl ether acetate of Yida Co., Ltd.

[0037] It should be noted that: Guangdong Haohui New Materials Co., Ltd.'s CR91192 modified epoxy acrylate has good adhesion to glass and some difficult-to-attach substrates, and has good flexibility; Changxing 6145-100 is ETRCURE6145-100, which has good wear resistance, fast curing, high hardness and other characteristics; in combination with Changxing 6185's difunctional aliphatic polyurethane acrylate resin, the three are mixed to become the main film-forming substance. The modified epoxy acrylate oligomer has excellent wettability and leveling properties, and its own curing shrinkage is small. It mainly provides adhesion, strengthens the system's wet film self-leveling properties, solves the frame effect, and reduces the dry film curing shrinkage. The aliphatic polyurethane acrylate mainly provides plating and stability, fullness, film strength and balance of the system as a whole Curing speed, polyester acrylate has high gloss after drying, good adhesion, good miscibility among the three, high density of the cured paint film, good developability, and is matched with tri-functional acrylic monomers such as pentaerythritol triacrylate. The tri-functional acrylic monomer is Changxing EM235C, which has the characteristics of high hardness, fast curing, high cross-linking density, good solvent resistance, etc. It is matched with the above three resins to provide high reactivity of the paint. The high cross-linking density ensures that the paint film has sufficient brightness and fullness to ensure the physical and chemical properties of the product, while improving the construction properties such as leveling effect; the wetting and leveling agent is selected to balance the wetting of the material, improve the self-leveling property of the paint itself, improve the surface adhesion, improve the product construction tolerance and improve the surface performance of the paint film, while balancing the plating property, recoating property and temperature-resistant adhesion stability of the primer.

[0038] The present invention is further described below in conjunction with examples. It should be understood that the examples are only used to illustrate the present invention rather than to limit the scope of the present invention.

[0039] A glass ceramic metallized UV vacuum coating comprises the following components in parts by weight:

[0040]

[0041]

[0042] According to the weight proportions in the above table, a glass ceramic metallized UV vacuum plating coating preparation process is adopted for preparation, comprising the following steps:

[0043] S1: Select the production cylinder, confirm that the inner wall of the cylinder has been cleaned and the discharge valve is closed;

[0044] S2: Add 2-official special modified epoxy acrylate resin, 2-official aliphatic polyurethane acrylate resin, 6-official aliphatic polyurethane acrylate resin, polyester acrylate resin, 3-official acrylate monomer, mono-official acrylate monomer, phosphate ester, 1-hydroxycyclohexyl phenyl ketone, benzoin dimethyl ether and leveling agent into the production tank, and disperse for 25-30 minutes with a high-speed disperser, wherein the high-speed dispersion speed of the disperser is 1500±200 rpm;

[0045] S3: Add ethyl acetate, butyl acetate and propylene glycol methyl ether acetate into the production tank, and disperse them at a low speed of 500±100 rpm for 10-15 minutes using a disperser.

[0046] S4: The paint that has completed step 3 is defined as the finished paint. An appropriate amount of the finished paint is randomly taken for testing, and the remaining finished paint is packaged. The test includes the following steps: select glass → dust and oil removal → spray UV glass electroplating primer, construction viscosity 9.5-10 seconds, construction film thickness 20-30μm → UV mercury lamp curing full dry, energy 800-1500mJ / cm 2 →Electroplating→Spray UV electroplating topcoat, and perform corresponding performance tests after the product cools down;

[0047] S5: Evaluate the paint and paint film that have completed the test in step S4 according to HG / T 3655-2012.

[0048] Comparative Examples 1-5 with different resin ratios and corresponding performance results:

[0049]

[0050] It can be seen from the experimental test results in the above table that when the heat resistance of the paint film of Example 1 was tested at 180°C for 1 hour, the paint film showed de-plating and bubbling, indicating that the ratio of Example 1 has poor paint film heat resistance; when the heat resistance of the paint film of Example 2 was tested at 180°C for 1 hour, the paint film showed slight bubbling, indicating that the ratio of the example also has poor paint film heat resistance; the ratios of Examples 3-4 all have excellent fineness, hardness, workability, paint film heat resistance and storage stability; when the heat resistance of the paint film of Example 5 was tested at 180°C for 1 hour, the paint film showed slight coloring; it can be seen that the overall characteristics of the paint of the ratio of Examples 3-4 are the best.

[0051] The present invention can achieve the expected effect in view of the differences between various spraying equipments and the rigid requirements of customers for mass production on the construction tolerance, product construction parameters, physical and chemical properties of the paint film, etc.

[0052] The present invention adopts aliphatic polyurethane acrylate resin, polyester acrylate resin and monomer such as Changxing, Sadomar and Haohui. With the development of technology, the above materials may be replaced. Therefore, the use of the material is replaceable.

[0053] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the technical solution of the present invention using the technical content disclosed above are equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention still belong to the present invention.

Claims

1. A glass ceramic metallization UV vacuum coating, characterized in that: The composition includes the following components by weight:

2. The glass ceramic metallization UV vacuum plating coating according to claim 1, characterized in that: The 2-official special modified epoxy acrylate resin is CR91192 produced by Guangdong Haohui New Materials Co., Ltd.; the 2-official aliphatic polyurethane acrylate resin is Changxing 6185; and the 6-official aliphatic polyurethane acrylate resin is Changxing 6145-100.

3. The glass ceramic metallization UV vacuum plating coating according to claim 1, characterized in that: The polyester acrylic resin is Changxing 6316; the trifunctional acrylate monomer is Changxing EM235C; and the monofunctional acrylate monomer is Changxing EM90.

4. The glass ceramic metallization UV vacuum plating coating according to claim 1, characterized in that: The phosphate ester is Sartomer SR9051; the 1-hydroxycyclohexyl phenyl ketone is Tianjin Jiuri 1104, and the benzoin dimethyl ether is Tianjin Jiuri 1065.

5. The glass ceramic metallization UV vacuum plating coating according to claim 1, characterized in that: The leveling agent is Digao Rad 2100; the ethyl acetate is ethyl acetate from Jiangmen Qianxin; the butyl acetate is butyl acetate from Jiangmen Qianxin; and the propylene glycol methyl ether acetate is propylene glycol methyl ether acetate from Yida Co., Ltd.

6. A preparation process of glass ceramic metallization UV vacuum coating, characterized in that: The glass ceramic metallization UV vacuum coating used in any one of claims 1 to 5 comprises the following steps: S1: Select the production cylinder, confirm that the inner wall of the cylinder has been cleaned and the discharge valve is closed; S2: Add 2-official special modified epoxy acrylate resin, 2-official aliphatic polyurethane acrylate resin, 6-official aliphatic polyurethane acrylate resin, polyester acrylate resin, 3-official acrylate monomer, mono-official acrylate monomer, phosphate ester, 1-hydroxycyclohexyl phenyl ketone, benzoin dimethyl ether and leveling agent into the production tank, and disperse for 25-30 minutes with a high-speed disperser, wherein the high-speed dispersion speed of the disperser is 1500±200 rpm; S3: Add ethyl acetate, butyl acetate and propylene glycol methyl ether acetate into the production tank, and disperse them at a low speed of 500±100 rpm for 10-15 minutes using a disperser. S4: The paint that has completed step 3 is defined as the finished paint, and a proper amount of the finished paint is randomly taken for testing, and the rest of the finished paint is packaged; S5: Evaluate the paint and paint film that have completed the test in step S4 according to HG / T 3655-2012.

7. The preparation process of the glass ceramic metallization UV vacuum plating coating according to claim 6, characterized in that: In step S4, the finished paint is tested, including the following steps: selecting glass → dust and oil removal → spraying UV glass electroplating primer → UV mercury lamp curing and drying → electroplating → spraying UV electroplating topcoat, and performing corresponding performance tests after the product is cooled.

8. The preparation process of glass ceramic metallization UV vacuum plating coating according to claim 7, characterized in that: The spray-on UV glass electroplating primer has a construction viscosity of 9.5-10 seconds and a construction film thickness of 20-30 μm.

9. The preparation process of glass ceramic metallization UV vacuum plating coating according to claim 7, characterized in that: The UV mercury lamp cures completely, with an energy of 800-1500mJ / cm 2 .

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