Tearable light-storing aerosol coating and preparation method thereof

Abstract

The invention discloses a tearable light-storing aerosol coating and a preparation method thereof, and belongs to the technical field of functional coatings. The environment-friendly coating is prepared from the following components in parts by weight: 18 to 24 parts of resin, 20 to 25 parts of a light storage indicator, 4 to 6 parts of an anti-reflection toughening agent, 4 to 7 parts of a surface treating agent, 1 to 2 parts of PTFE powder of 40 to 100 microns, 0.6 to 1.2 parts of a dispersing agent, 0.8 to 1.5 parts of a release agent, 0.3 to 0.8 part of a flatting agent, 18 to 24 parts of an environment-friendly solvent and 15 to 23 parts of F1234. According to the tearable light-storing aerosol coating, the problem that an existing tearable coating coating is difficult to clean and remove is solved, the tearable light-storing aerosol coating is good in substrate combining performance, excellent in light-storing performance and light-emitting performance, capable of being used as a colorful noctilucent mark, capable of being matched with a mechanical visual inspection system to work, good in flexibility and convenient in aerosol packaging construction, and the tearable light-storing aerosol coating is matched with a pressing head to meet different process requirements; the formula-optimized powder is subjected to surface modification, so that the anti-precipitation property is good, and the storage is stable.

Description

Technical Field

[0001] This invention relates to the field of functional coatings technology, and in particular to a tearable photoluminescent aerosol coating and its preparation method. Background Technology

[0002] In various upstream and downstream divisions of labor and product manufacturing, higher demands are placed on the protection and appearance protection of industrial equipment and components during the transfer and delivery process. Standardized management is essential between industrial clusters and upstream and downstream of the industrial chain; industrial equipment and components should be subject to safety, labeling, and quality assurance requirements; and abnormalities should be prevented during transfer and transportation.

[0003] The commonly used protective measure for industrial equipment and components is the plastic wrapping film process. However, practical application has revealed limitations such as inconsistent protective film thickness, failure to provide adequate reinforcement as needed, and the presence of protective film interfaces, resulting in discontinuous protection. Water or moisture can easily penetrate the product, leading to protective failure and unnecessary losses. Existing peelable masking film coating processes may involve multi-component paint mixing and spray gun application, making the process complex. They use short-term protective coatings, which are difficult to remove and cannot meet the needs of integrated production. A composite coating structure, such as the peelable masking film coating and its preparation method (CN202310275694.9), and the method for preparing coated patterned glass using peelable masking film coatings, is a good protection and application method, but its use has limitations. Breakage or film damage may easily occur during the peeling process. These coatings may not employ reinforcing measures, making removal after application difficult.

[0004] In the production quality inspection process, a new process has been discovered that uses machine vision to replace manual visual inspection. To address this challenge, general or special light sources are used to illuminate industrial equipment and components. This advanced inspection process, which improves the error tolerance of machine vision visual inspection through workstation illuminance control and enhanced light-gathering properties, is innovative. This technology achieves continuous multi-station light emission imaging with a single illumination using ordinary or special lighting methods. This technology can clearly reveal the shape, surface, and other characteristics of industrial equipment and components, helping us accurately determine if there are any abnormalities. In some cases, the related protective film cleaning process can even be omitted, further reducing production and time costs. The product can also be used for other civilian coatings. Existing processes are difficult to adapt to the automated quality inspection requirements of applications.

[0005] Currently, existing peelable coatings on the market have coatings that are difficult to clean and remove. Peelable coatings have a slow drying process, settle during storage, and are cumbersome to apply (especially with two-component systems), reducing the emission of irritating odors. Specialized peelable coatings that can be matched and integrated with corresponding visual inspection and assembly production lines are needed. This also reduces the illumination requirements for quality inspection processes.

[0006] Therefore, it is evident that developing a peelable coating product that combines excellent protection, tearability, light-gathering function, compatibility with dark factories, and ease of aerosol spraying is of great practical value and necessity in meeting market demands. Summary of the Invention

[0007] The purpose of this invention is to provide a tearable photoluminescent aerosol coating and its preparation method, thereby solving the above-mentioned problems and improving the product's drying performance, substrate adhesion tolerance, and overall product performance.

[0008] To achieve the above objectives, the present invention provides a tearable photoluminescent aerosol coating comprising the following raw materials by weight: 18-24 parts of resin 20-25 parts of photoluminescence indicator 4-6 parts of penetration enhancer and toughening agent 4-7 parts of surface treatment agent 1-2 parts of 40-100 micron PTFE powder Dispersant 0.6–1.2 parts Release agent 0.8–1.5 parts Leveling agent 0.3-0.8 parts 18-24 parts of environmentally friendly solvent F1234 15-23 copies.

[0009] Preferably, the resin comprises SIS and SEBS in a weight ratio of (1-3):(5-8).

[0010] Preferably, the phosphorescent indicator is a luminescent material, which is any one of rare earth aluminate luminescent materials or zinc sulfide luminescent materials.

[0011] Preferably, the antireflective and toughening agent is glass beads, which are glass beads with a size of 0.1-0.2 mm and 9-17 μm, and the weight ratio of glass beads with a diameter of 0.1-0.2 mm to glass beads with a diameter of 9-17 μm is (2-5):(1-3).

[0012] Preferably, the surface treatment agent is a silane coupling agent, which is one or more of γ-aminopropyltriethoxysilane or γ-glycidoxypropyltrimethoxysilane.

[0013] Preferably, the dispersant is any one or more of modified polyester dispersants, hyperbranched polymer dispersants, or organically modified siloxane dispersants.

[0014] Preferably, the release agent is one or more of a siloxane-based release agent or a non-silicone-based release agent.

[0015] Preferably, the leveling agent is one or more of YCK-1270N, Levelol 837, or BYK 3550.

[0016] Preferably, the environmentally friendly solvent is one or more of ethylene glycol monophenyl ether, cyclohexane, and methyl isobutyl ketone.

[0017] This invention also provides a method for preparing a tearable photoluminescent aerosol coating, comprising the following steps: heating a photoluminescent indicator, a light-reflecting and toughening agent, and 40-100 micron PTFE powder at 55-85°C and vacuum dehydrating for 2-5 hours; adding a surface treatment agent, modifying and dispersing the mixture evenly; adding a resin, a dispersant, a release agent, a leveling agent, and an environmentally friendly solvent and stirring evenly to obtain a coating base material; dispensing the coating base material into an aerosol can according to the process quantity, sealing the can, and filling it with F1234 to obtain a tearable photoluminescent aerosol coating.

[0018] Therefore, the present invention has the following beneficial effects: 1. This invention uses a coating to replace mechanically covering a single-thickness protective film, allowing the coating thickness to be adjusted as needed, and providing good adhesion to the substrate; 2. This invention provides a photoluminescent indicator compounded with a light-transmitting powder system. The coating has good photoluminescence and light emission properties and can be used as a multi-color luminous marker, working in conjunction with a machine vision inspection system. 3. The coating of this invention contains reinforcing fibers, which have good flexibility; the aerosol packaging is convenient for construction, and the applicator can meet different process requirements; the optimized powder formula is surface modified, which has good anti-settling properties and is stable in storage.

[0019] The technical solution of the present invention will be further described in detail below through embodiments. Detailed Implementation

[0020] The technical solution of the present invention will be further described below through embodiments.

[0021] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. Example 1

[0022] This embodiment provides a tearable photoluminescent aerosol coating, the preparation process of which includes the following steps: According to the weight ratio, 10 parts of Julang Optical Material Phosphorescent Powder JPG-394, 15 parts of Minghui MHG-4C, 2 parts of 0.1-0.2 mm glass beads, 2 parts of 9-17 micron glass microfibers, and 1 part of 40-100 micron PTFE powder are heated to 85℃ for dehydration for 2 hours; 3 parts of surface treatment agent Dow Corning Z-6030 and 3 parts of γ-glycidyl etheroxypropyltrimethoxysilane are added, modified and dispersed evenly; 3 parts of resin SIS, 17 parts of SEBS, 0.3 parts of dispersant YCK-T66, 0.3 parts of BENGEL 968, 0.3 parts of BYK-7411 ES, 0.4 parts of Dongguan Aoda Chemical Tape Release Agent AD2314, 0.4 parts of Dongguan Antai Fine Chemical EVA Release Agent AT-XH-1, 0.1 parts of leveling agent YCK-1270N, and Levelol are added. Mix 0.1 parts of 837, 0.1 parts of BYK 3550, 6 parts of environmentally friendly solvent glycol monophenyl ether, 10 parts of cyclohexane, and 8 parts of methyl isobutyl ketone evenly to obtain the coating base material; dispense the coating base material into aerosol cans according to the process quantity, seal the cans, and fill them with 18 parts of F1234 to obtain the finished product. When using, match the corresponding atomizing head according to the process requirements. Example 2

[0023] This embodiment provides a tearable photoluminescent aerosol coating, the preparation process of which includes the following steps: According to the weight ratio, 21 parts of JPG-394 luminescent powder from Juliang Optical Materials, 5 parts of 0.1-0.2 mm glass beads, 1 part of 9-17 micron glass microfibers, and 2 parts of 40-100 micron PTFE powder were heated to 55℃ and dehydrated for 5 hours; 4 parts of Dow Corning Z-6030 surface treatment agent were added for modification and dispersion; 2.7 parts of SIS resin, 21.3 parts of SEBS, 0.6 parts of YCK-T66 dispersant, 1 part of AD2314 release agent from Dongguan Aoda Chemical Tape, 0.4 parts of YCK-1270N leveling agent, and 18 parts of diol monophenyl ether environmentally friendly solvent were added and stirred evenly to obtain the coating base material; the coating base material was dispensed into aerosol cans according to the process quantity, sealed, and filled with 23 parts of F1234 to obtain the finished product. When using, the corresponding atomizing head should be matched according to the process requirements. Example 3

[0024] This embodiment provides a tearable photoluminescent aerosol coating, the preparation process of which includes the following steps: According to the weight ratio, 20 parts of Minghui MHG-4C, 2 parts of 0.1-0.2 mm glass beads, 3 parts of 9-17 micron glass microfibers, and 1.5 parts of 40-100 micron PTFE powder were heated to 70℃ and dehydrated for 4 hours; 7 parts of surface treatment agent γ-glycidyl etheroxypropyltrimethoxysilane were added, modified, and dispersed and mixed evenly; 6.6 parts of SIS, 15.4 parts of SEBS, 0.8 parts of dispersant BENGEL968, 0.4 parts of BYK-7411 ES, 1.5 parts of Dongguan Antai Fine Chemical EVA release agent AT-XH-1, 0.6 parts of leveling agent Levelol 837, 0.2 parts of BYK 3550, 13 parts of environmentally friendly solvent cyclohexane, and 8 parts of methyl isobutyl ketone were stirred evenly to obtain the coating base material; the coating base material was dispensed into aerosol cans according to the process quantity, sealed, and then filled with F1234. 20 portions are prepared to obtain the finished product. When using, match the corresponding atomizing head according to the process requirements.

[0025] Comparative Example 1 Comparative Example 1 is a non-tearable ordinary luminous aerosol coating, the main components of which are 35 parts polyurethane resin, 30 parts cyclohexanone, 20 parts alkaline earth aluminate luminous powder, which is a long-lasting luminous material that can emit light for a long time after absorbing light source, giving the coating a luminous effect, and 15 parts defoamer, adhesion promoter, etc.

[0026] Comparative Example 2 Comparative Example 2 is a peelable non-luminous aerosol coating, the main components of which are 28 parts of specially modified polyvinyl butyral (PVB) resin, 40 parts of a mixed solvent of ethanol and toluene (30 parts of ethanol and 10 parts of toluene), 20 parts of phthalocyanine blue pigment, and 12 parts of plasticizer, slip agent, etc.

[0027] Performance testing The tearable photoluminescent aerosol coatings prepared in Examples 1 to 3 of this invention and the conventional commercially available products in Comparative Examples 1 and 2 were used as samples for performance testing. The samples were prepared in accordance with the requirements of BB / T 0047-2018 "Aerosol Paints". The test methods for each performance are as follows. 1. Surface drying time: Refer to the provisions of GB / T 1728-1979 "Determination of drying time of paint film and putty film"; 2. Adhesion: The adhesion shall be determined in accordance with the provisions of GB / T 1720-1979(89) "Determination of Adhesion of Paint Films"; 3. Storage stability: Five samples were divided into 15 aerosol cans and 15 small iron cans. The aerosol cans were first evacuated and then sealed and filled with propellant. The small iron cans were sealed with pressure caps. Five cans were placed in a 50±2℃ forced-air drying oven, five cans of samples were placed in a -10±2℃ refrigerator, and five cans of product were placed at room temperature (as a blank control). After storage for 15 days, 30 days, 60 days, and 90 days, the samples were taken out, shaken well, and observed and compared for thickening, oxidation discoloration, roughening, etc., and whether the spraying application was normal. 4. Tearability: Turpentine solvent is applied to the surface of the tearable photoluminescent aerosol coating. The solvent dissolves the resin, reducing its adhesion to the substrate. When peeled off, no adhesive residue or damage to the substrate surface is left. The peeled aerosol coating should remain intact without breaking or peeling off. 5. Luminescence time: According to GB / T1727-92 "General preparation method of paint film", the sprayed paint samples obtained in the examples were prepared respectively. After the paint film was completely dry, it was irradiated under natural light for 2 hours, and the luminescence time of the sample in the dark was recorded.

[0028] 6. Impact resistance: Tested in accordance with GB / T1732-1993 "Test Method for Impact Resistance of Coating Film", using HJ13-QCJ coating impact tester, impact height of 50 cm, and weight of hammer (1000±1) g.

[0029] The performance test results are shown in Table 1 below: Table 1 Performance test results of 5 samples project Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Constructability Aerosol spraying application is convenient and simple. Aerosol spraying application is convenient and simple. Aerosol spraying application is convenient and simple. Two-component spray gun application, complex application process with high requirements Film coating application is convenient and simple. Drying time (min) 10 8 9 9 21 Adhesion, (grade) 1 1 1 2 2 Storage stability No abnormalities No abnormalities No abnormalities Hardener abnormality No abnormalities Tearability Can be completely torn off Can be completely torn off Can be completely torn off Do not tear Partial tearing Emission time (h) 13 13 12 6 none Impact resistance (cm) 50 50 50 50 50 The test results above show that the tearable photoluminescent aerosol coating prepared by this invention has good photoluminescence and light emission properties, good flexibility and tearability; convenient aerosol packaging construction, high storage stability and excellent construction performance, and has great potential for development and application.

[0030] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A tearable photoluminescent aerosol coating, characterized in that, Raw materials comprising the following weight components: 18-24 parts of resin 20-25 parts of photoluminescence indicator 4-6 parts of penetration enhancer and toughening agent 4-7 parts of surface treatment agent 1-2 parts of 40-100 micron PTFE powder Dispersant 0.6–1.2 parts Release agent 0.8–1.5 parts Leveling agent 0.3-0.8 parts 18-24 parts of environmentally friendly solvent F1234 15-23 copies.

2. The tearable photoluminescent aerosol coating according to claim 1, characterized in that, The resin comprises SIS and SEBS in a weight ratio of (1-3):(5-8).

3. The tearable photoluminescent aerosol coating according to claim 1, characterized in that, The phosphorescent indicator is a luminescent material, which is any one or more of rare earth aluminate luminescent materials or zinc sulfide luminescent materials.

4. The tearable photoluminescent aerosol coating according to claim 1, characterized in that, The antireflective and toughening agent is glass beads, and the glass beads are 0.1-0.2 mm and 9-17 μm in size. The weight ratio of glass beads with a size of 0.1-0.2 mm to glass beads with a size of 9-17 μm is (2-5):(1-3).

5. The tearable photoluminescent aerosol coating according to claim 1, characterized in that, The surface treatment agent is a silane coupling agent, which is any one or more of γ-aminopropyltriethoxysilane or γ-glycidoxypropyltrimethoxysilane.

6. The tearable photoluminescent aerosol coating according to claim 1, characterized in that, The dispersant is any one or more of the following: modified polyester dispersant, hyperbranched polymer dispersant, or organic modified siloxane dispersant.

7. The tearable photoluminescent aerosol coating according to claim 1, characterized in that, The release agent is any one or more of a siloxane-based release agent or a non-silicone release agent.

8. The tearable photoluminescent aerosol coating according to claim 1, characterized in that, The leveling agent is any one or more of YCK-1270N, Levelol 837, or BYK 3550.

9. The tearable photoluminescent aerosol coating according to claim 1, characterized in that, The environmentally friendly solvent is any one or more of ethylene glycol monophenyl ether, cyclohexane, and methyl isobutyl ketone.

10. A method for preparing a tearable photoluminescent aerosol coating as described in any one of claims 1-9, characterized in that, Includes the following steps: Photoluminescent indicator, anti-reflective and toughening agent, and 40-100 micron PTFE powder are heated to 55-85℃ and vacuum dehydrated for 2-5 hours; surface treatment agent is added, modified and dispersed evenly; resin, dispersant, release agent, leveling agent and environmentally friendly solvent are added and stirred evenly to obtain coating base material; the coating base material is packaged into aerosol cans according to the process quantity, sealed and filled with F1234 to obtain tearable photoluminescent aerosol coating.