UV-curing high-temperature-resistant environment-friendly glaze for automotive glass and application thereof

Abstract

The invention belongs to the technical field of automotive glass glaze, and particularly relates to automotive glass UV-curing high-temperature-resistant environment-friendly glaze and application thereof. The UV-curing high-temperature-resistant environment-friendly glaze for the automobile glass is prepared from the following components in parts by weight: 30-50 parts of acrylate resin, 1-5 parts of a nano material, 2-5 parts of a photoinitiator, 0.5-1 part of an auxiliary agent and 35-50 parts of toner, and the prepared UV-curing high-temperature-resistant environment-friendly glaze for the automobile glass does not contain harmful solvents, does not volatilize, is non-toxic and low in odor, does not need to be provided with VOC (Volatile Organic Compounds) treatment equipment, and is environment-friendly. The carbon emission cost is not needed, the influence on the body health of workers is small, and energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] This invention belongs to the field of automotive glass glaze technology, and particularly relates to a UV-curable high-temperature resistant and environmentally friendly glaze for automotive glass and its application. Background Technology

[0002] Traditional automotive glass glazes are solvent-based inks with extremely high volatility, typically cured by heat to form a film. However, these solvent-based thermosetting glass glazes have some drawbacks, mainly as follows:

[0003] (1) Not environmentally friendly: 45%-65% of the traditional glazes currently in use contain harmful and toxic solvents, which will evaporate into the air during the processing, causing pollution to the environment and harm to the human body. It is also one of the types that does not meet the carbon emission requirements and is strictly controlled by the state.

[0004] (2) Not energy-efficient: The traditional glazes currently used consume a lot of electricity and natural gas during production. Some production lines consume nearly 10,000 yuan in electricity and gas costs per day.

[0005] (3) Complex process: Traditional high-temperature glaze for automotive glass requires the following processing steps:

[0006] Glass cleaning → heating and drying → screen printing of high-temperature glass glaze → heating and drying (toxic gases VOC and solvents are produced during low-temperature drying, which requires VOC treatment and a large investment of funds and equipment) → entering the high-temperature tempering furnace → cooling → finished product;

[0007] (4) High consumption and high cost: During the production process, a large amount of solvent evaporates into the air during heating, and only 30%-45% of the solid content of the glaze adheres to the glass plate. The smaller the coating area per unit quantity (per kilogram), the greater the energy consumption, and the larger the coating area per unit quantity (per kilogram), the less the energy consumption.

[0008] (5) Because high-temperature glass glaze containing solvents is prone to cracking and pinholes when cured at low temperature, it is easy to generate waste products and the scrap rate is high.

[0009] (6) Traditional high-temperature glass glaze is prone to dry plate phenomenon with unclear printing due to the influence of ambient temperature during printing, resulting in uncontrollable waste. Summary of the Invention

[0010] In view of the shortcomings of the prior art, the purpose of this invention is to provide a UV-curable high-temperature resistant and environmentally friendly glaze for automotive glass and its application.

[0011] To achieve the above objectives, the technical solution adopted is:

[0012] A UV-curable, high-temperature resistant, and environmentally friendly glaze for automotive glass, comprising the following components by weight: 30-50 parts of acrylic resin, 1-5 parts of nanomaterials, 2-5 parts of photoinitiator, 0.5-1 part of additives, and 35-50 parts of colorant.

[0013] Preferably, the acrylate resin is at least one of the following components: 30-50 parts of epoxy acrylate, 30-50 parts of polyurethane acrylate, and 30-50 parts of polyester acrylate.

[0014] Preferably, the polyurethane acrylate is an aliphatic polyurethane acrylate and / or an aromatic polyurethane acrylate.

[0015] More preferably, the UV-curable high-temperature resistant environmentally friendly glaze for automotive glass further includes at least one of the following components: 40-50 parts of isoborneol acrylate, 40-50 parts of tetramethylpropylenediamine, and 40-50 parts of 1,6-hexanediol diacrylate.

[0016] Preferably, the photoinitiator is at least one of 2-hydroxy-2-methyl-1-phenylpropanone, 1-hydroxycyclohexylphenyl ketone, 2-methyl-2-(4-morpholino)-1-[4-(methylthio)phenyl]-1-propanone, and photoinitiator ITX.

[0017] Preferably, the color powder is an inorganic pigment and / or an organic pigment.

[0018] Preferably, the nanomaterial is at least one of carbon nanomaterials, metal nanoparticles, and metal oxide nanoparticles.

[0019] Preferably, the additive is at least one of an antifoaming agent, a leveling agent, a dispersant, etc.

[0020] The second objective of this invention is to provide an application of the aforementioned UV-curable high-temperature environmentally friendly glaze for automotive glass, specifically applied to automotive glass, including the following steps: (1) cleaning the glass and heating and drying it; (2) screen printing the aforementioned UV-curable high-temperature environmentally friendly glaze for automotive glass onto the glass surface; (3) UV curing; (4) entering a high-temperature tempering furnace and cooling down.

[0021] Preferably, the UV curing time is 1 to 3 seconds.

[0022] Preferably, the tempering time in the high-temperature tempering furnace is 3-5 minutes, and the tempering is divided into three stages: the first stage is the heating process, which is 150-250℃; the second stage is the temperature maintenance at 700℃; and the third stage is the cooling process, which is 350-150℃.

[0023] Preferably, the carbon nanomaterial is nano-carbon black with an average particle size of 20–50 nm.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] This invention provides a UV-curable, high-temperature resistant, and environmentally friendly glaze for automotive glass. It contains no harmful solvents, is non-volatile, non-toxic, and low-odor. It requires no VOC treatment equipment, incurs no carbon emission costs, and has minimal impact on worker health, making it energy-efficient and environmentally friendly. This glaze achieves 100% printed area, resulting in a larger printing unit area compared to traditional high-temperature glass glazes, thus reducing overall costs. It eliminates the need for low-temperature drying, requiring only UV irradiation for 1-3 seconds of immediate drying, allowing for instant tempering in a furnace to achieve qualified products. It does not require electric or natural gas heating, and the power of the UV lamp used is only one-third that of electric heating, demonstrating energy efficiency. It prevents plate drying during printing, resulting in a low scrap rate and a large unit area, achieving approximately 15% energy savings compared to traditional high-temperature glass glazes. This UV-curable, high-temperature resistant, and environmentally friendly glaze for automotive glass is heat-resistant and can be placed in the tempering furnace along with the glass, withstanding temperatures up to 700 degrees Celsius. It is environmentally friendly, energy-saving, and low-consumption, causing no pollution and potentially addressing some shortcomings of traditional high-temperature glass glazes, thus becoming a new type of automotive high-temperature glass glaze. Attached Figure Description

[0026] Figure 1 This is a flowchart illustrating the processing technology of UV-cured high-temperature resistant and environmentally friendly glaze for automotive glass according to the present invention. Detailed Implementation

[0027] The present invention will be described below with reference to examples. These examples are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0028] Example 1

[0029] A UV-curable, high-temperature resistant, and environmentally friendly glaze for automotive glass, comprising, by weight:

[0030] Polyester acrylate: 35 parts

[0031] Isoborneol acrylate: 40 parts

[0032] Nano carbon black (average particle size 20nm): 1.5 parts

[0033] Pigment Solvent Black: 35 parts

[0034] Photoinitiator 2-hydroxy-2-methyl-1-phenylpropanone: 2 parts

[0035] Additives: 0.5 parts of defoamer.

[0036] Example 2

[0037] A UV-curable, high-temperature resistant, and environmentally friendly glaze for automotive glass, comprising, by weight:

[0038] Aromatic polyurethane acrylate STU2160: 35 parts

[0039] Tetramethylpropylenediamine: 40 parts

[0040] Nano carbon black (average particle size 20nm): 1.5 parts

[0041] Pigment Solvent Black: 50 parts

[0042] Photoinitiator 2-hydroxy-2-methyl-1-phenylpropanone: 2 parts

[0043] Additives: 0.5 parts of defoamer.

[0044] Example 3

[0045] A UV-curable, high-temperature resistant, and environmentally friendly glaze for automotive glass, comprising, by weight:

[0046] Aromatic polyurethane acrylate STU2160: 40 parts

[0047] Tetramethylpropylenediamine: 42 parts

[0048] Nano carbon black (average particle size 20nm): 1.5 parts

[0049] Pigment Solvent Black: 48 parts

[0050] Photoinitiator 2-hydroxy-2-methyl-1-phenylpropanone: 2.5 parts

[0051] Additives: 0.7 parts of defoamer.

[0052] Example 4

[0053] A UV-curable, high-temperature resistant, and environmentally friendly glaze for automotive glass, comprising, by weight:

[0054] Polyester acrylate: 45 parts

[0055] Tetramethylpropylenediamine: 46 parts

[0056] Nano carbon black (average particle size 20nm): 1.5 parts

[0057] Pigment Solvent Black: 42 parts

[0058] Photoinitiator 2-hydroxy-2-methyl-1-phenylpropanone: 3.5 parts

[0059] Additives: 0.3 parts defoamer, 0.2 parts dispersant.

[0060] Example 5

[0061] A UV-curable, high-temperature resistant, and environmentally friendly glaze for automotive glass, comprising, by weight:

[0062] Epoxy acrylate: 50 parts

[0063] 1,6-Hexanediol diacrylate: 48 parts

[0064] Nano carbon black (average particle size 20nm): 1.5 parts

[0065] Pigment Solvent Black: 43 parts

[0066] Photoinitiator 2-hydroxy-2-methyl-1-phenylpropanone: 4 parts

[0067] Additives: 0.3 parts defoamer, 0.2 parts dispersant.

[0068] Example 6

[0069] A UV-curable, high-temperature resistant, and environmentally friendly glaze for automotive glass, comprising, by weight:

[0070] Epoxy acrylate: 40 parts

[0071] Isoborneol acrylate: 50 parts

[0072] Nano carbon black (average particle size 20nm): 1.5 parts

[0073] Pigment Solvent Black: 42 parts

[0074] Photoinitiator 2-hydroxy-2-methyl-1-phenylpropanone: 5 parts

[0075] Additives: 0.1 parts of defoamer.

[0076] The preparation process of the UV-curable high-temperature environmentally friendly glaze for automotive glass in each embodiment is as follows: each component is added into a container and dispersed, stirred and emulsified in a high-speed mixer and emulsifier to achieve a fineness of less than 5 μm.

[0077] (1) Clean the glass and heat it to dry; (2) Screen print the UV-curable high-temperature environmentally friendly glaze for automotive glass as described in each embodiment onto the glass surface. The printing thickness can be 10-50 micrometers as needed, and can be controlled by the mesh size of the screen. Specifically, 10 micrometers is selected; (3) UV curing is performed by irradiating with ultraviolet light for 1-3 seconds to obtain glass patterns and text with good surface quality; (4) The glass is placed in a high-temperature tempering furnace for 5 minutes, divided into three stages. The first stage is the heating process, which is 150-250℃. The second stage is the temperature maintenance process, which is 700℃. The third stage is the cooling process, which is 350-150℃. The glass is then cooled to obtain the desired finish. The process flow diagram is as follows: Figure 1 As shown.

[0078] The automotive tempered glass with UV-cured high-temperature resistant and environmentally friendly glaze obtained in each embodiment was subjected to the performance tests shown in Table 1. The results are shown in Table 1.

[0079] Table 1. Performance test results for each embodiment

[0080]

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A UV-curable, high-temperature resistant, and environmentally friendly glaze for automotive glass, characterized in that, By weight, it includes the following components: 30-50 parts acrylate resin, 1-5 parts nanomaterials, 2-5 parts photoinitiator, 0.5-1 part additives, and 35-50 parts colorant.

2. The UV-curable high-temperature resistant and environmentally friendly glaze for automotive glass according to claim 1, characterized in that, The acrylate resin is at least one of the following components: 30-50 parts of epoxy acrylate, 30-50 parts of polyurethane acrylate, and 30-50 parts of polyester acrylate.

3. The UV-curable high-temperature resistant and environmentally friendly glaze for automotive glass according to claim 2, characterized in that, The polyurethane acrylate is an aliphatic polyurethane acrylate and / or an aromatic polyurethane acrylate.

4. The UV-curable high-temperature resistant and environmentally friendly glaze for automotive glass according to claim 1, characterized in that, It also includes at least one of the following components: 40-50 parts of isobornyl acrylate, 40-50 parts of tetramethylpropylenediamine, and 40-50 parts of 1,6-hexanediol diacrylate.

5. The UV-curable high-temperature resistant and environmentally friendly glaze for automotive glass according to claim 1, characterized in that, The photoinitiator is at least one of 2-hydroxy-2-methyl-1-phenylpropanone, 1-hydroxycyclohexylphenyl ketone, 2-methyl-2-(4-morpholino)-1-[4-(methylthio)phenyl]-1-propanone, and photoinitiator ITX.

6. The UV-curable high-temperature resistant and environmentally friendly glaze for automotive glass according to claim 1, characterized in that, The color powder is an inorganic pigment and / or an organic pigment.

7. The UV-curable high-temperature resistant and environmentally friendly glaze for automotive glass according to claim 1, characterized in that, The nanomaterial is at least one of carbon nanomaterials, metal nanoparticles, and metal oxide nanoparticles.

8. The application of a UV-curable, high-temperature resistant, and environmentally friendly glaze for automotive glass as described in any one of claims 1 to 7, characterized in that, The process for use in automotive glass includes the following steps: (1) cleaning the glass and heating and drying it; (2) screen printing the automotive glass UV-curable high-temperature resistant and environmentally friendly glaze onto the glass surface; (3) UV curing; and (4) entering a high-temperature tempering furnace and cooling down.

9. The application of the UV-curable high-temperature resistant environmentally friendly glaze for automotive glass according to claim 8, characterized in that, The UV curing time is 3 to 5 seconds.

10. The application of the UV-curable high-temperature resistant environmentally friendly glaze for automotive glass according to claim 8, characterized in that, The tempering time in the high-temperature tempering furnace is 3-5 minutes, divided into three stages. The first stage is the heating process, which is 150-250℃. The second stage is the temperature-maintaining process at 700℃. The third stage is the cooling process, which is 350-150℃.

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