Traffic facility sign with double functions of light reflection and light storage and preparation method of traffic facility sign

Abstract

The invention relates to the technical field of road traffic, in particular to a traffic facility sign with double functions of light reflection and light storage and a preparation method of the traffic facility sign. A traffic facility sign with double functions of light reflection and light storage sequentially comprises a non-woven fabric layer, an adhesive layer, a noctilucent and light-reflecting layer and a mask layer from bottom to top. The luminous and reflective layer comprises reflective glass beads and light-storing glass beads, and the mass ratio of the reflective glass beads to the light-storing glass beads is 1: (0.5-2.5). According to the traffic facility sign with the dual functions of light reflection and light storage, the traffic facility sign capable of emitting light is improved under the condition that road illumination is not good, a driver can still recognize the traffic sign when a vehicle headlamp cannot irradiate the traffic facility sign, and therefore the warning effect is achieved in advance, and the traffic facility sign is more convenient to use. And the position of the guardrail and the direction of the road are clearly marked, traffic accidents caused by limited sight during night driving are reduced, and the road guardrail has lasting use performance.

Description

Technical Field

[0001] The present application relates to the field of road traffic technology, and more specifically, to a traffic facility sign with dual functions of reflection and light storage and a preparation method thereof. Background Art

[0002] At present, road signs are commonly used traffic signs. For nighttime driving safety, road traffic signs made of reflective materials are usually pasted on the surface of roads or guardrails. Road reflective signs usually include reflective paint (fine glass beads are mixed into the paint and applied to signs or markings), reflective film (a patch made of fine glass beads is pasted on the sign) and reflective buttons (made of glass or plastic, embedded in metal objects, as protruding road signs). These reflective signs will only display the graphics or text of the signs under the illumination of street lights or vehicle headlights, so as to facilitate identification and safe driving. On roads with poor lighting, simple reflective signs will only appear when vehicles are close to the light. In cloudy and rainy days, the glass beads on the surface of the reflective signs are easily covered by rain, and the normal reflective effect cannot be exerted, which greatly reduces the visibility of the reflective signs, especially at night, there may be greater road traffic safety hazards.

[0003] Therefore, there is an urgent need for a traffic facility sign that can illuminate itself even when the road lighting is poor, so that drivers can still recognize the traffic sign when the vehicle headlights cannot reach it, thereby serving as a warning in advance and clearly marking the location of the guardrail and the direction of the road, reducing traffic accidents caused by limited vision when driving at night. Summary of the invention

[0004] In view of the problem that existing traffic facility signs are unable to provide normal reflective effects when road lighting is poor, which increases the potential safety hazard of road traffic, the present application provides a traffic facility sign with dual functions of reflection and light storage and a preparation method thereof.

[0005] In the first aspect, the present application provides a traffic facility sign with dual functions of reflection and light storage, adopting the following technical solution: A traffic facility sign with dual functions of reflection and light storage, comprising, from bottom to top, a non-woven fabric layer, an adhesive layer, a luminous and reflective layer, and a mask layer; the luminous and reflective layer comprises reflective glass beads and light-storing glass beads, wherein the mass ratio of the reflective glass beads to the light-storing glass beads is 1:(0.5-2.5).

[0006] By adopting the above technical solution, the non-woven fabric layer plays a supporting and reinforcing role, and has a certain tensile strength and flexibility. At the same time, the porous structure of the non-woven fabric allows the fresh adhesive layer mixture to penetrate. After the adhesive layer mixture is cured, the non-woven fabric at the bottom can play a good reinforcing effect, thereby ensuring the firmness and stability of the prefabricated logo. The mask layer plays a protective and hydrophobic and oleophobic self-cleaning effect. The luminous and reflective layers are composed of a mixture of reflective glass beads and light-storing glass beads, wherein the reflective glass beads can reflect the road surface logo under the illumination of the headlight when the vehicle approaches, and the light-storing glass beads can store energy under the sunlight during the day and display the logo through self-luminescence at night. And the reflective glass beads and light-storing glass beads in the appropriate proportion range can achieve continuous recycling of light storage performance and light-emitting performance, and ensure the light intensity, indicate the position, and provide a wider field of view.

[0007] Therefore, even when the road lighting is poor, the light-storing glass particles can emit light by themselves, and the driver can still recognize the traffic signs when the vehicle headlights cannot reach them, thus providing a warning in advance. At the same time, the light source of the vehicle headlights can also replenish energy for the light-storing glass beads. This type of traffic facility sign can be easily attached to the road surface or guardrail surface, and when the vehicle is driving on a poorly lit road at night, it can provide a reminder and warning in advance, thus reducing traffic accidents caused by limited vision during nighttime driving.

[0008] In a specific embodiment, the light-storing glass beads include modified rare earth phosphor, nano-silicon powder and high-purity aluminum oxide.

[0009] By adopting the above technical scheme, fluorescent lighting materials containing rare earth elements have higher quantum yield and luminescence performance, which are modified to prepare modified rare earth phosphors, enhance the dispersion performance of quantum dots, increase the bonding performance with other film layers, improve the integrity and durability, and then add nano silicon micropowder and high-purity alumina. Nano silicon micropowder has extremely high specific surface area and surface reactivity, and promotes each other with modified rare earth phosphors, can attract sunlight, effectively improve the fluorescence intensity and efficiency of rare earth phosphors, the efficiency and selectivity of catalytic reactions, and provide higher energy conversion efficiency. On this basis, high-purity alumina is added. High-purity alumina has adsorption properties, which can adsorb ions and impurities with weak luminescence performance in rare earth phosphors to the surface and remove them during the preparation process, further increasing the stability and fluorescence intensity of the light-storing glass bead material, and can enhance its bonding performance with the material.

[0010] In a specific implementation manner, the mass ratio of the modified rare earth phosphor, nano-silicon powder and high-purity alumina is (2-5):(1-3):1.

[0011] By adopting the above technical solution, the stability and fluorescence intensity of the light-storage glass bead material are increased by mixing modified rare earth phosphors, nano silicon powders and high-purity alumina in a certain proportion, and the bonding performance between the glass bead and the material can be enhanced. Too much rare earth phosphor of this type will increase the cost of the material, which is not conducive to its promotion and use. On the other hand, it will have a certain impact on the optical stability, and the luminous intensity will gradually decay, which is not conducive to long-term light storage. Too much nano silicon powder will cause too strong light scattering when emitting light at night, which is not conducive to the driver's accurate recognition of the content of the road sign.

[0012] In a specific embodiment, the preparation method of the modified rare earth phosphor includes: adding the rare earth phosphor to anhydrous ethanol, performing ultrasound for 20-25 minutes, adding vinyltrimethoxysilane, stirring evenly, and gradually adding dilute H2SO4 to adjust the pH to 3-4, heating and stirring at 85-90°C for 2-4 hours, filtering and drying to obtain the modified rare earth phosphor.

[0013] By adopting the above technical scheme, the rare earth phosphor is modified by grafting with vinyltrimethoxysilane, so that the dispersion performance of the rare earth phosphor in the system is improved, agglomeration is avoided, and the fluorescent lighting is made uniform. The vinyl modification can increase the bonding strength with the adjacent film layer, further improve the adhesion of the traffic facility sign, so as to improve the overall stability and durability of the traffic facility sign.

[0014] In a specific embodiment, the adhesive layer includes titanium dioxide and water-based EAU adhesive.

[0015] The mass ratio of the titanium dioxide to the water-based EAU adhesive is 1:(3-5).

[0016] By adopting the above technical scheme, adding titanium dioxide to water-based EAU adhesive can provide good covering power and decorative effects, and can reflect and enhance the luminescence of the luminous and reflective layers, making their luminous intensity higher. The reflection range allows the driver to accurately identify the surrounding guardrails and road directions through facility signs, and the combination with water-based EAU adhesive can further enhance the mechanical strength and adhesion of the adhesive layer, thereby extending the service life of the coating.

[0017] In a specific embodiment, the method for preparing the mask layer includes taking 11-16 parts by mass of perhydropolysilazane, adding 100-120 parts by mass of ethanol, stirring for 30-45 minutes, adding 2-5 parts by mass of fluorine-containing compounds and 0.5-1 parts by mass of leveling agent, and ultrasonically dispersing for 15-20 minutes to obtain a spray slurry for the mask layer.

[0018] By adopting the above technical scheme, the addition of perhydropolysilazane can interact with the luminous and reflective layers to improve their mechanical stability and adhesion, while improving the lubricity of the coating surface, which is conducive to water droplets rolling off the mask layer on rainy days and achieving a better self-cleaning effect; fluorine-containing compounds increase the corrosion resistance of the mask layer, improve the oleophobicity and aging resistance of the coating, and enhance the light transmittance of the mask layer.

[0019] In the second aspect, the present application provides a method for preparing a traffic facility sign having both reflective and light-storing functions, using the following technical solution: The method for preparing a traffic facility sign with dual functions of light reflection and light storage comprises the following steps: adding 3-8 parts by mass of titanium dioxide to 15-19 parts by mass of water-based EAU adhesive and 40-50 parts by mass of N,N-dimethylformamide and mixing them evenly to obtain an adhesive layer (2) mixture; applying the adhesive layer (2) mixture on a non-woven fabric base film; immediately and evenly spreading a mixture of luminous and reflective layer (3) glass bead particles after the adhesive layer (2) is applied, entering a first drying channel and being matured; spraying a mask layer spray slurry, entering a second drying channel and being matured to obtain a traffic facility sign with dual functions of light reflection and light storage.

[0020] By adopting the above technical scheme, the various components in the luminous and reflective layers are coordinated with each other, and the energy cycle of light storage and reflection is effectively realized, so that even under poor road lighting, it has considerable luminous intensity and optical stability, which can provide the driver with early reminders and warnings about the driving environment. The adhesive layer can penetrate into the non-woven fabric layer to enhance the bonding strength and stability between the non-woven fabric layer and the adhesive layer. The mixed components of the reflective glass beads and the light-storing glass beads sink into the adhesive layer, and after being spread, they enter the first drying channel to fix the particles, and then the mask layer is sprayed to increase the conformability of the surface of the luminous and reflective layers, improve the adhesion and bonding strength, and combine with the mask layer to achieve a hydrophobic, oleophobic and self-cleaning effect.

[0021] In a specific implementation manner, the temperature of the first drying tunnel is 70-90°C and the air volume is 15-20 / RPM; the temperature of the second drying tunnel is 115-125°C.

[0022] By adopting the above technical solution, the film layers are completely cured by setting the drying temperature required by a certain composite process. The uniform hot air prevents the adhesive layer from being too wet or too dry at high speed, thereby improving the coating quality of the adhesive layer.

[0023] In summary, this application has the following beneficial effects: 1. The non-woven fabric layer plays a supporting and reinforcing role, and has a certain tensile strength and flexibility. At the same time, the porous structure of the non-woven fabric allows the fresh adhesive layer mixture to penetrate. After the adhesive layer mixture is cured, the non-woven fabric at the bottom can play a good reinforcing effect, thereby ensuring the firmness and stability of the prefabricated logo. The mask layer plays a protective and hydrophobic and oleophobic self-cleaning effect. The luminous and reflective layers are composed of a mixture of reflective glass beads and light-storing glass beads. The reflective glass beads can reflect the road markings under the illumination of the headlights when the vehicle approaches, while the light-storing glass beads can store energy under the sunlight during the day and display the logos through self-luminescence at night. And the appropriate proportion of reflective glass beads and light-storing glass beads can achieve continuous recycling of light storage performance and light-emitting performance, and ensure the light intensity, indicate the position, and provide a wider field of view.

[0024] 2. The fluorescent lighting materials containing rare earth elements have higher quantum yield and luminescence performance. They are modified to make modified rare earth phosphors, enhance the dispersion performance of quantum dots, increase the bonding performance with other film layers, improve the integrity and durability, and then add nano silicon powder and high purity alumina. Nano silicon powder has extremely high specific surface area and surface reactivity, and promotes each other with modified rare earth phosphors, which can attract sunlight, effectively improve the fluorescence intensity and efficiency of rare earth phosphors, the efficiency and selectivity of catalytic reactions, and provide higher energy conversion efficiency. On this basis, high purity alumina is added. High purity alumina has adsorption properties, which can adsorb ions and impurities with weak luminescence performance in rare earth phosphors to the surface and remove them during the preparation process, further increasing the stability and fluorescence intensity of the light-storing glass bead material, and can enhance its bonding performance with the material.

[0025] 3. Adding titanium dioxide to water-based EAU adhesive can provide good covering power and decorative effects, and can reflect and enhance the luminescence of the luminous and reflective layers, making their luminous intensity higher. The reflection range allows drivers to accurately identify the surrounding guardrails and road directions through facility signs, and combined with water-based EAU adhesive can further enhance the mechanical strength and adhesion of the adhesive layer and extend the service life of the coating. DETAILED DESCRIPTION

[0026] The present application is further described in detail below with reference to the embodiments.

[0027] Some raw materials used in the preparation examples and embodiments: the reflective glass beads are item number: 22-65, purchased from Lingshou County Yuyuan Mineral Products Co., Ltd.; the fluorine-containing compound is 2,2,3,4,4,4-hexafluorobutyl acrylate purchased from Zhongshan Yuanda New Materials Co., Ltd.; rare earth phosphor item number: item number: YG-03, purchased from Dongguan Qiansebian New Materials Co., Ltd.; nano-silicon powder: item number: mkmn-084, purchased from Hebei McMahon Mineral Products Co., Ltd.; high-purity alumina was purchased from Henan Dongli New Materials Co., Ltd.; vinyl trimethoxysilane: KH-171; titanium dioxide was purchased from Hebei Laiyi New Materials Technology Co., Ltd.; perhydropolysilazane item number: xyh001; dilute H2SO4 is 15% dilute sulfuric acid; leveling agent model: BYK-333; water-based EAU adhesive was purchased from Nanjing Huoku New Materials Technology Co., Ltd.

[0028] The raw materials used in the examples and comparative examples that are not otherwise specified are all conventional products that can be purchased from the market.

[0029] Preparation Example Preparation Example 1 Add 5 g of rare earth phosphor to 50 g of anhydrous ethanol, perform ultrasound for 25 min, add 8 g of vinyltrimethoxysilane, stir evenly, and gradually add dilute H2SO4 to adjust the pH to 3. After heating and stirring at 85°C for 4 h, filter and dry to obtain the modified rare earth phosphor.

[0030] Preparation Example 2 Add 5 g of rare earth phosphor to 50 g of anhydrous ethanol, perform ultrasound for 20 min, add 8 g of vinyltrimethoxysilane, stir evenly, and gradually add dilute H2SO4 to adjust the pH to 4. After heating and stirring at 90°C for 2 h, filter and dry to obtain the modified rare earth phosphor. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of a traffic facility sign having the dual functions of reflection and light storage according to Example 1 of the present application.

[0032] Explanation of the accompanying drawings: 1. non-woven fabric layer; 2. adhesive layer; 3. luminous and reflective layer; 4. mask layer. Example

[0033] Example 1 A traffic facility sign with dual functions of reflection and light storage, comprising, from bottom to top, a non-woven fabric layer 1, an adhesive layer 2, a luminous and reflective layer 3 and a mask layer; the luminous and reflective layer 3 comprises reflective glass beads and light-storing glass beads, wherein the mass ratio of the reflective glass beads to the light-storing glass beads is 1:0.5, and the light-storing glass beads comprise modified rare earth phosphor, nano-silicon powder and high-purity alumina prepared in Preparation Example 1 in a mass ratio of 2:3:1.

[0034] According to the formula, 3g of titanium dioxide is accurately weighed, 15g of water-based EAU adhesive and 50g of N,N-dimethylformamide are added and mixed evenly to obtain a mixture for adhesive layer 2. The mixture for adhesive layer 2 is scraped on a non-woven base film with a thickness of 0.3mm, so that part of the mixture penetrates into the non-woven fabric and the other part protrudes from the non-woven fabric. After the adhesive layer 2 is scraped, the mixture of glass beads particles of the luminous and reflective layer 3 is immediately and evenly spread. The reflective glass beads and the light-storing glass beads make the thickness of the luminous and reflective layer 3 0.2mm, and part of the reflective glass beads and the light-storing glass beads Part of it sinks into the adhesive layer 2, and part of it is higher than the adhesive layer 2, and the total thickness of the adhesive layer 2 is about 1.8mm; it enters the first drying channel with a temperature of 70°C and a wind volume of 15 / RPM, and matures for 3 minutes; take 1.6 perhydropolysilazane, add 10g of ethanol, stir for 30 minutes, add 0.5g of fluorine-containing compound and 0.05g of leveling agent, and ultrasonically disperse for 20 minutes to obtain the mask layer spray slurry, and finally spray the mask layer spray slurry, enter the second drying channel with a temperature of 125°C, and mature for 5 minutes to obtain a traffic facility sign with dual functions of reflection and light storage.

[0035] Example 2 A traffic facility sign with dual functions of reflection and light storage, comprising, from bottom to top, a non-woven fabric layer 1, an adhesive layer 2, a luminous and reflective layer 3 and a mask layer; the luminous and reflective layer 3 comprises reflective glass beads and light-storing glass beads, wherein the mass ratio of the reflective glass beads to the light-storing glass beads is 1:0.5, and the light-storing glass beads comprise modified rare earth phosphor, nano-silicon powder and high-purity alumina prepared in Preparation Example 2 in a mass ratio of 2:3:1.

[0036] According to the formula, 3g of titanium dioxide is accurately weighed, 15g of water-based EAU adhesive and 50g of N,N-dimethylformamide are added and mixed evenly to obtain a mixture for adhesive layer 2. The mixture for adhesive layer 2 is scraped on a non-woven base film with a thickness of 0.3mm, so that part of the mixture penetrates into the non-woven fabric and the other part protrudes from the non-woven fabric. After the adhesive layer 2 is scraped, the mixture of glass beads particles of the luminous and reflective layer 3 is immediately and evenly spread. The reflective glass beads and the light-storing glass beads make the thickness of the luminous and reflective layer 3 0.2mm, and part of the reflective glass beads and the light-storing glass beads Part of it sinks into the adhesive layer 2, and part of it is higher than the adhesive layer 2, and the total thickness of the adhesive layer 2 is about 1.8mm; it enters the first drying channel with a temperature of 90°C and a wind volume of 20 / RPM, and matures for 3 minutes; take 1.6 perhydropolysilazane, add 10g of ethanol, stir for 30 minutes, add 0.5g of fluorine-containing compound and 0.05g of leveling agent, and ultrasonically disperse for 20 minutes to obtain the mask layer spray slurry, and finally spray the mask layer spray slurry, enter the second drying channel with a temperature of 115°C, and mature for 5 minutes to obtain a traffic facility sign with dual functions of reflection and light storage.

[0037] Example 3 A traffic facility sign with dual functions of reflection and light storage, comprising, from bottom to top, a non-woven fabric layer 1, an adhesive layer 2, a luminous and reflective layer 3, and a mask layer; the luminous and reflective layer 3 comprises reflective glass beads and light-storing glass beads, wherein the mass ratio of the reflective glass beads to the light-storing glass beads is 1:2.5, and the light-storing glass beads comprise modified rare earth phosphor, nano-silicon powder, and high-purity alumina prepared in Preparation Example 1 in a mass ratio of 2:3:1.

[0038] According to the formula, 3g of titanium dioxide is accurately weighed, 15g of water-based EAU adhesive and 50g of N,N-dimethylformamide are added and mixed evenly to obtain a mixture for adhesive layer 2. The mixture for adhesive layer 2 is scraped on a non-woven base film with a thickness of 0.3mm, so that part of the mixture penetrates into the non-woven fabric and the other part protrudes from the non-woven fabric. After the adhesive layer 2 is scraped, the mixture of glass beads particles of the luminous and reflective layer 3 is immediately and evenly spread. The reflective glass beads and the light-storing glass beads make the thickness of the luminous and reflective layer 3 0.2mm, and part of the reflective glass beads and the light-storing glass beads Part of it sinks into the adhesive layer 2, and part of it is higher than the adhesive layer 2, and the total thickness of the adhesive layer 2 is about 1.8mm; it enters the first drying channel with a temperature of 70°C and a wind volume of 15 / RPM, and matures for 3 minutes; take 1.6 perhydropolysilazane, add 10g of ethanol, stir for 30 minutes, add 0.5g of fluorine-containing compound and 0.05g of leveling agent, and ultrasonically disperse for 20 minutes to obtain the mask layer spray slurry, and finally spray the mask layer spray slurry, enter the second drying channel with a temperature of 125°C, and mature for 5 minutes to obtain a traffic facility sign with dual functions of reflection and light storage.

[0039] Example 4 A traffic facility sign with dual functions of reflection and light storage, comprising, from bottom to top, a non-woven fabric layer 1, an adhesive layer 2, a luminous and reflective layer 3 and a mask layer; the luminous and reflective layer 3 comprises reflective glass beads and light-storing glass beads, wherein the mass ratio of the reflective glass beads to the light-storing glass beads is 0.5:0.5, and the light-storing glass beads comprise modified rare earth phosphor, nano-silicon powder and high-purity alumina prepared in Preparation Example 1 in a mass ratio of 2:3:1.

[0040] According to the formula, 3g of titanium dioxide is accurately weighed, 15g of water-based EAU adhesive and 50g of N,N-dimethylformamide are added and mixed evenly to obtain a mixture for adhesive layer 2. The mixture for adhesive layer 2 is scraped on a non-woven base film with a thickness of 0.3mm, so that part of the mixture penetrates into the non-woven fabric and the other part protrudes from the non-woven fabric. After the adhesive layer 2 is scraped, the mixture of glass beads particles of the luminous and reflective layer 3 is immediately and evenly spread. The reflective glass beads and the light-storing glass beads make the thickness of the luminous and reflective layer 3 0.2mm, and part of the reflective glass beads and the light-storing glass beads Part of it sinks into the adhesive layer 2, and part of it is higher than the adhesive layer 2, and the total thickness of the adhesive layer 2 is about 1.8mm; it enters the first drying channel with a temperature of 70°C and a wind volume of 15 / RPM, and matures for 3 minutes; take 1.6 perhydropolysilazane, add 10g of ethanol, stir for 30 minutes, add 0.5g of fluorine-containing compound and 0.05g of leveling agent, and ultrasonically disperse for 20 minutes to obtain the mask layer spray slurry, and finally spray the mask layer spray slurry, enter the second drying channel with a temperature of 125°C, and mature for 5 minutes to obtain a traffic facility sign with dual functions of reflection and light storage.

[0041] Example 5 A traffic facility sign with dual functions of reflection and light storage, comprising, from bottom to top, a non-woven fabric layer 1, an adhesive layer 2, a luminous and reflective layer 3 and a mask layer; the luminous and reflective layer 3 comprises reflective glass beads and light-storing glass beads, wherein the mass ratio of the reflective glass beads to the light-storing glass beads is 1:0.5, and the light-storing glass beads comprise modified rare earth phosphor, nano-silicon powder and high-purity alumina prepared in Preparation Example 1 in a mass ratio of 5:1:1.

[0042] According to the formula, 3g of titanium dioxide is accurately weighed, 15g of water-based EAU adhesive and 50g of N,N-dimethylformamide are added and mixed evenly to obtain a mixture for adhesive layer 2. The mixture for adhesive layer 2 is scraped on a non-woven base film with a thickness of 0.3mm, so that part of the mixture penetrates into the non-woven fabric and the other part protrudes from the non-woven fabric. After the adhesive layer 2 is scraped, the mixture of glass beads particles of the luminous and reflective layer 3 is immediately and evenly spread. The reflective glass beads and the light-storing glass beads make the thickness of the luminous and reflective layer 3 0.2mm, and part of the reflective glass beads and the light-storing glass beads Part of it sinks into the adhesive layer 2, and part of it is higher than the adhesive layer 2, and the total thickness of the adhesive layer 2 is about 1.8mm; it enters the first drying channel with a temperature of 70°C and a wind volume of 15 / RPM, and matures for 3 minutes; take 1.6 perhydropolysilazane, add 10g of ethanol, stir for 30 minutes, add 0.5g of fluorine-containing compound and 0.05g of leveling agent, and ultrasonically disperse for 20 minutes to obtain the mask layer spray slurry, and finally spray the mask layer spray slurry, enter the second drying channel with a temperature of 125°C, and mature for 5 minutes to obtain a traffic facility sign with dual functions of reflection and light storage.

[0043] Example 6 A traffic facility sign with dual functions of reflection and light storage, comprising, from bottom to top, a non-woven fabric layer 1, an adhesive layer 2, a luminous and reflective layer 3, and a mask layer; the luminous and reflective layer 3 comprises reflective glass beads and light-storing glass beads, wherein the mass ratio of the reflective glass beads to the light-storing glass beads is 1:0.5, and the light-storing glass beads comprise modified rare earth phosphor, nano-silicon powder, and high-purity alumina prepared in Preparation Example 1 in a mass ratio of 1:4:1.

[0044] According to the formula, 3g of titanium dioxide is accurately weighed, 15g of water-based EAU adhesive and 50g of N,N-dimethylformamide are added and mixed evenly to obtain a mixture for adhesive layer 2. The mixture for adhesive layer 2 is scraped on a non-woven base film with a thickness of 0.3mm, so that part of the mixture penetrates into the non-woven fabric and the other part protrudes from the non-woven fabric. After the adhesive layer 2 is scraped, the mixture of glass beads particles of the luminous and reflective layer 3 is immediately and evenly spread. The reflective glass beads and the light-storing glass beads make the thickness of the luminous and reflective layer 3 0.2mm, and part of the reflective glass beads and the light-storing glass beads Part of it sinks into the adhesive layer 2, and part of it is higher than the adhesive layer 2, and the total thickness of the adhesive layer 2 is about 1.8mm; it enters the first drying channel with a temperature of 70°C and a wind volume of 15 / RPM, and matures for 3 minutes; take 1.6 perhydropolysilazane, add 10g of ethanol, stir for 30 minutes, add 0.5g of fluorine-containing compound and 0.05g of leveling agent, and ultrasonically disperse for 20 minutes to obtain the mask layer spray slurry, and finally spray the mask layer spray slurry, enter the second drying channel with a temperature of 125°C, and mature for 5 minutes to obtain a traffic facility sign with dual functions of reflection and light storage.

[0045] Example 7 A traffic facility sign with dual functions of reflection and light storage, comprising, from bottom to top, a non-woven fabric layer 1, an adhesive layer 2, a luminous and reflective layer 3 and a mask layer; the luminous and reflective layer 3 comprises reflective glass beads and light-storing glass beads, wherein the mass ratio of the reflective glass beads to the light-storing glass beads is 1:0.5, and the light-storing glass beads comprise modified rare earth phosphor and nano-silicon powder prepared in Preparation Example 1 in a mass ratio of 2:3.

[0046] According to the formula, 3g of titanium dioxide is accurately weighed, 15g of water-based EAU adhesive and 50g of N,N-dimethylformamide are added and mixed evenly to obtain a mixture for adhesive layer 2. The mixture for adhesive layer 2 is scraped on a non-woven base film with a thickness of 0.3mm, so that part of the mixture penetrates into the non-woven fabric and the other part protrudes from the non-woven fabric. After the adhesive layer 2 is scraped, the mixture of glass beads particles of the luminous and reflective layer 3 is immediately and evenly spread. The reflective glass beads and the light-storing glass beads make the thickness of the luminous and reflective layer 3 0.2mm, and part of the reflective glass beads and the light-storing glass beads Part of it sinks into the adhesive layer 2, and part of it is higher than the adhesive layer 2, and the total thickness of the adhesive layer 2 is about 1.8mm; it enters the first drying channel with a temperature of 70°C and a wind volume of 15 / RPM, and matures for 3 minutes; take 1.6 perhydropolysilazane, add 10g of ethanol, stir for 30 minutes, add 0.5g of fluorine-containing compound and 0.05g of leveling agent, and ultrasonically disperse for 20 minutes to obtain the mask layer spray slurry, and finally spray the mask layer spray slurry, enter the second drying channel with a temperature of 125°C, and mature for 5 minutes to obtain a traffic facility sign with dual functions of reflection and light storage.

[0047] Example 8 A traffic facility sign with dual functions of reflection and light storage, comprising, from bottom to top, a non-woven fabric layer 1, an adhesive layer 2, a luminous and reflective layer 3 and a mask layer; the luminous and reflective layer 3 comprises reflective glass beads and light-storing glass beads, wherein the mass ratio of the reflective glass beads to the light-storing glass beads is 1:0.5, and the light-storing glass beads comprise modified rare earth phosphor prepared in Preparation Example 1 and high-purity alumina in a mass ratio of 5:1.

[0048] According to the formula, 3g of titanium dioxide is accurately weighed, 15g of water-based EAU adhesive and 50g of N,N-dimethylformamide are added and mixed evenly to obtain a mixture for adhesive layer 2. The mixture for adhesive layer 2 is scraped on a non-woven base film with a thickness of 0.3mm, so that part of the mixture penetrates into the non-woven fabric and the other part protrudes from the non-woven fabric. After the adhesive layer 2 is scraped, the mixture of glass beads particles of the luminous and reflective layer 3 is immediately and evenly spread. The reflective glass beads and the light-storing glass beads make the thickness of the luminous and reflective layer 3 0.2mm, and part of the reflective glass beads and the light-storing glass beads Part of it sinks into the adhesive layer 2, and part of it is higher than the adhesive layer 2, and the total thickness of the adhesive layer 2 is about 1.8mm; it enters the first drying channel with a temperature of 70°C and a wind volume of 15 / RPM, and matures for 3 minutes; take 1.6 perhydropolysilazane, add 10g of ethanol, stir for 30 minutes, add 0.5g of fluorine-containing compound and 0.05g of leveling agent, and ultrasonically disperse for 20 minutes to obtain the mask layer spray slurry, and finally spray the mask layer spray slurry, enter the second drying channel with a temperature of 125°C, and mature for 5 minutes to obtain a traffic facility sign with dual functions of reflection and light storage.

[0049] Example 9 A traffic facility sign with dual functions of reflection and light storage, comprising, from bottom to top, a non-woven fabric layer 1, an adhesive layer 2, a luminous and reflective layer 3 and a mask layer; the luminous and reflective layer 3 comprises reflective glass beads and light-storing glass beads, wherein the mass ratio of the reflective glass beads to the light-storing glass beads is 1:0.5, and the light-storing glass beads are modified rare earth phosphors.

[0050] According to the formula, 3g of titanium dioxide is accurately weighed, 15g of water-based EAU adhesive and 50g of N,N-dimethylformamide are added and mixed evenly to obtain a mixture for adhesive layer 2. The mixture for adhesive layer 2 is scraped on a non-woven base film with a thickness of 0.3mm, so that part of the mixture penetrates into the non-woven fabric and the other part protrudes from the non-woven fabric. After the adhesive layer 2 is scraped, the mixture of glass beads particles of the luminous and reflective layer 3 is immediately and evenly spread. The reflective glass beads and the light-storing glass beads make the thickness of the luminous and reflective layer 3 0.2mm, and part of the reflective glass beads and the light-storing glass beads Part of it sinks into the adhesive layer 2, and part of it is higher than the adhesive layer 2, and the total thickness of the adhesive layer 2 is about 1.8mm; it enters the first drying channel with a temperature of 70°C and a wind volume of 15 / RPM, and matures for 3 minutes; take 1.6 perhydropolysilazane, add 10g of ethanol, stir for 30 minutes, add 0.5g of fluorine-containing compound and 0.05g of leveling agent, and ultrasonically disperse for 20 minutes to obtain the mask layer spray slurry, and finally spray the mask layer spray slurry, enter the second drying channel with a temperature of 125°C, and mature for 5 minutes to obtain a traffic facility sign with dual functions of reflection and light storage.

[0051] Example 10 A traffic facility sign with dual functions of reflection and light storage, comprising, from bottom to top, a non-woven fabric layer 1, an adhesive layer 2, a luminous and reflective layer 3 and a mask layer; the luminous and reflective layer 3 comprises reflective glass beads and light-storing glass beads, wherein the mass ratio of the reflective glass beads to the light-storing glass beads is 1:0.5, and the light-storing glass beads comprise rare earth phosphors, nano-silicon powder and high-purity alumina in a mass ratio of 2:3:1.

[0052] According to the formula, 3g of titanium dioxide is accurately weighed, 15g of water-based EAU adhesive and 50g of N,N-dimethylformamide are added and mixed evenly to obtain a mixture for adhesive layer 2. The mixture for adhesive layer 2 is scraped on a non-woven base film with a thickness of 0.3mm, so that part of the mixture penetrates into the non-woven fabric and the other part protrudes from the non-woven fabric. After the adhesive layer 2 is scraped, the mixture of glass beads particles of the luminous and reflective layer 3 is immediately and evenly spread. The reflective glass beads and the light-storing glass beads make the thickness of the luminous and reflective layer 3 0.2mm, and part of the reflective glass beads and the light-storing glass beads Part of it sinks into the adhesive layer 2, and part of it is higher than the adhesive layer 2, and the total thickness of the adhesive layer 2 is about 1.8mm; it enters the first drying channel with a temperature of 70°C and a wind volume of 15 / RPM, and matures for 3 minutes; take 1.6 perhydropolysilazane, add 10g of ethanol, stir for 30 minutes, add 0.5g of fluorine-containing compound and 0.05g of leveling agent, and ultrasonically disperse for 20 minutes to obtain the mask layer spray slurry, and finally spray the mask layer spray slurry, enter the second drying channel with a temperature of 125°C, and mature for 5 minutes to obtain a traffic facility sign with dual functions of reflection and light storage.

[0053] Embodiment 11 A traffic facility sign with dual functions of reflection and light storage, comprising, from bottom to top, a non-woven fabric layer 1, an adhesive layer 2, a luminous and reflective layer 3 and a mask layer; the luminous and reflective layer 3 comprises reflective glass beads and light-storing glass beads, wherein the mass ratio of the reflective glass beads to the light-storing glass beads is 1:0.5, and the light-storing glass beads comprise modified rare earth phosphor, nano-silicon powder and high-purity alumina prepared in Preparation Example 1 in a mass ratio of 2:3:1.

[0054] According to the formula, 15g of water-based EAU adhesive and 50g of N,N-dimethylformamide were accurately weighed and mixed evenly to obtain a mixture for adhesive layer 2. The mixture for adhesive layer 2 was scraped and coated on a non-woven fabric base film with a thickness of 0.3mm, so that a part of the mixture penetrated into the non-woven fabric and another part was higher than the non-woven fabric. After the scraping of adhesive layer 2 was completed, the mixture of glass beads particles of luminous and reflective layer 3 was immediately and evenly spread. The reflective glass beads and the light-storing glass beads made the thickness of the luminous and reflective layer 3 0.2mm, and part of the reflective glass beads and the light-storing glass beads were sunk into the adhesive. The adhesive layer 2 is partially higher than the adhesive layer 2, and the total thickness of the adhesive layer 2 is about 1.8 mm; it enters the first drying channel at a temperature of 70°C and an air volume of 15 / RPM, and matures for 3 minutes; 1.6 perhydropolysilazane is added with 10g of ethanol, stirred for 30 minutes, and then 0.5g of fluorine-containing compound and 0.05g of leveling agent are added, and ultrasonic dispersion is performed for 20 minutes to obtain a mask layer spray slurry, and finally the mask layer spray slurry is sprayed, and it enters the second drying channel at a temperature of 125°C and matured for 5 minutes to obtain a traffic facility sign with dual functions of reflection and light storage.

[0055] Example 12 A traffic facility sign with dual functions of reflection and light storage, comprising, from bottom to top, a non-woven fabric layer 1, an adhesive layer 2, a luminous and reflective layer 3 and a mask layer; the luminous and reflective layer 3 is reflective glass beads and light-storing glass beads, wherein the mass ratio of the reflective glass beads to the light-storing glass beads is 1:0.5, and the light-storing glass beads are modified rare earth phosphors, nano-silicon powders and high-purity alumina prepared in Preparation Example 1 in a mass ratio of 2:3:1.

[0056] According to the formula, 3g of titanium dioxide is accurately weighed, 15g of water-based EAU adhesive and 50g of N,N-dimethylformamide are added and mixed evenly to obtain a mixture for adhesive layer 2. The mixture for adhesive layer 2 is scraped on a non-woven base film with a thickness of 0.3mm, so that part of the mixture penetrates into the non-woven fabric and the other part protrudes from the non-woven fabric. After the adhesive layer 2 is scraped, the mixture of glass beads for luminous and reflective layer 3 is immediately and evenly spread. The reflective glass beads and the light-storing glass beads make the thickness of the luminous and reflective layer 3 0.2mm, and the reflective glass beads and the light-storing glass beads are Part of the glass beads sank into the adhesive layer 2, and part of them protruded from the adhesive layer 2, and the total thickness of the adhesive layer 2 was about 1.8 mm; they entered the first drying channel at a temperature of 70°C and an air volume of 15 / RPM and matured for 3 minutes; 1.6 perhydropolysilazane was added with 10g of ethanol and stirred for 30 minutes, then 0.05g of leveling agent was added, and ultrasonic dispersion was performed for 20 minutes to obtain a mask layer spray slurry, and finally the mask layer spray slurry was sprayed, and the glass beads entered the second drying channel at a temperature of 125°C and matured for 5 minutes to obtain a traffic facility sign with dual functions of reflection and light storage.

[0057] Comparative Example Comparative Example 1 A traffic facility sign with dual functions of reflection and light storage, which comprises, from bottom to top, a non-woven fabric layer 1, an adhesive layer 2, a luminous and reflective layer 3 and a mask layer; the luminous and reflective layer 3 is reflective glass beads.

[0058] According to the formula, 3g of titanium dioxide is accurately weighed, 15g of water-based EAU adhesive and 50g of N,N-dimethylformamide are added and mixed evenly to obtain a mixture for adhesive layer 2. The mixture for adhesive layer 2 is scraped on a non-woven base film with a thickness of 0.3mm, so that part of the mixture penetrates into the non-woven fabric and the other part protrudes from the non-woven fabric. After the adhesive layer 2 is scraped, the mixture of glass beads particles of the luminous and reflective layer 3 is immediately and evenly spread. The reflective glass beads and the light-storing glass beads make the thickness of the luminous and reflective layer 3 0.2mm, and part of the reflective glass beads and the light-storing glass beads Part of it sinks into the adhesive layer 2, and part of it is higher than the adhesive layer 2, and the total thickness of the adhesive layer 2 is about 1.8mm; it enters the first drying channel with a temperature of 70°C and a wind volume of 15 / RPM, and matures for 3 minutes; take 1.6 perhydropolysilazane, add 10g of ethanol, stir for 30 minutes, add 0.5g of fluorine-containing compound and 0.05g of leveling agent, and ultrasonically disperse for 20 minutes to obtain the mask layer spray slurry, and finally spray the mask layer spray slurry, enter the second drying channel with a temperature of 125°C, and mature for 5 minutes to obtain a traffic facility sign with dual functions of reflection and light storage.

[0059] Comparative Example 2 A traffic facility sign with dual functions of reflection and light storage, comprising, from bottom to top, a non-woven fabric layer 1, an adhesive layer 2, a luminous and reflective layer 3 and a mask layer; the luminous and reflective layer 3 is light-storing glass beads, wherein the mass ratio of the light-storing glass beads is 1:0.5, and the light-storing glass beads include modified rare earth phosphor, nano-silicon powder and high-purity alumina prepared in Preparation Example 1 in a mass ratio of 2:3:1.

[0060] According to the formula, 3g of titanium dioxide is accurately weighed, 15g of water-based EAU adhesive and 50g of N,N-dimethylformamide are added and mixed evenly to obtain a mixture for adhesive layer 2. The mixture for adhesive layer 2 is scraped on a non-woven base film with a thickness of 0.3mm, so that part of the mixture penetrates into the non-woven fabric and the other part protrudes from the non-woven fabric. After the adhesive layer 2 is scraped, the mixture of glass beads particles of the luminous and reflective layer 3 is immediately and evenly spread. The reflective glass beads and the light-storing glass beads make the thickness of the luminous and reflective layer 3 0.2mm, and part of the reflective glass beads and the light-storing glass beads Part of it sinks into the adhesive layer 2, and part of it is higher than the adhesive layer 2, and the total thickness of the adhesive layer 2 is about 1.8mm; it enters the first drying channel with a temperature of 70°C and a wind volume of 15 / RPM, and matures for 3 minutes; take 1.6 perhydropolysilazane, add 10g of ethanol, stir for 30 minutes, add 0.5g of fluorine-containing compound and 0.05g of leveling agent, and ultrasonically disperse for 20 minutes to obtain the mask layer spray slurry, and finally spray the mask layer spray slurry, enter the second drying channel with a temperature of 125°C, and mature for 5 minutes to obtain a traffic facility sign with dual functions of reflection and light storage.

[0061] Comparative Example 3 A traffic facility sign with dual functions of reflection and light storage, comprising, from bottom to top, a non-woven fabric layer 1, a luminous and reflective layer 3, and a mask layer; the luminous and reflective layer 3 comprises reflective glass beads and light-storing glass beads, wherein the mass ratio of the reflective glass beads to the light-storing glass beads is 1:0.5, and the light-storing glass beads comprise modified rare earth phosphor, nano-silicon powder, and high-purity alumina prepared in Preparation Example 1 in a mass ratio of 2:3:1.

[0062] A mixture of glass bead particles of the luminous and reflective layer 3 is evenly spread on the non-woven fabric. The reflective glass beads and the light-storing glass beads make the thickness of the luminous and reflective layer 3 0.2 mm. Subsequently, 1.6 perhydropolysilazane is added to 10 g of ethanol and stirred for 30 minutes. Then, 0.5 g of fluorine-containing compound and 0.05 g of leveling agent are added. After ultrasonic dispersion for 20 minutes, the mask layer spray slurry is obtained. Finally, the mask layer spray slurry is sprayed and enters the second drying tunnel at a temperature of 125°C. It is aged for 5 minutes to obtain a traffic facility sign with dual functions of reflection and light storage.

[0063] Comparative Example 4 A traffic facility sign with dual functions of reflection and light storage, comprising, from bottom to top, a non-woven fabric layer 1, an adhesive layer 2, and a luminous and reflective layer 3; the luminous and reflective layer 3 comprises reflective glass beads and light-storing glass beads, wherein the mass ratio of the reflective glass beads to the light-storing glass beads is 1:0.5, and the light-storing glass beads comprise modified rare earth phosphor, nano-silicon powder and high-purity alumina prepared in Preparation Example 1 in a mass ratio of 2:3:1.

[0064] According to the formula, 3g of titanium dioxide is accurately weighed, 15g of water-based EAU adhesive and 50g of N,N-dimethylformamide are added and mixed evenly to obtain an adhesive layer 2 mixture, and the adhesive layer 2 mixture is scraped on a non-woven fabric base film with a thickness of 0.3mm, so that a part of the mixture penetrates into the non-woven fabric, and the other part protrudes from the non-woven fabric. After the adhesive layer 2 is scraped, the mixture of luminous and reflective layer 3 glass bead particles is immediately and evenly spread. The reflective glass beads and the light-storing glass beads make the thickness of the luminous and reflective layer 3 0.2mm, and a part of the reflective glass beads and the light-storing glass beads sink into the adhesive layer 2, and a part protrudes from the adhesive layer 2, and the total thickness of the adhesive layer 2 is about 1.8mm; enter the second drying tunnel at a temperature of 125°C and mature for 5 minutes to obtain a traffic facility sign with dual functions of reflection and light storage.

[0065] Performance Testing The performance test of a traffic facility sign with dual functions of reflection and light storage prepared in the embodiment and comparative example is carried out by the following method: a. Fluorescence performance test: After the tested traffic facility sign is illuminated for 20 minutes under the conditions of light source D65 and illumination 400lx, observe with the naked eye in the dark and record the time required for the fluorescent afterglow to completely disappear; Retroreflection coefficient: According to the method of JT / T493-2003, the retroreflection coefficient was tested using an FB-94 retroreflection performance tester (test conditions: observation angle 1.05°, incident angle 86.5°).

[0066] b. Adhesive properties: longitudinal tensile strength in accordance with national standard GB / T7125-1999; C. Dispersion: Observe with the naked eye whether the light of traffic facilities signs with dual functions of reflection and light storage at night is unevenly dispersed. The comparison results are shown in Table 1 below: Table 1 Performance test results As can be seen from Table 1, the traffic facility signs with dual functions of reflection and light storage obtained in the above embodiments meet the requirements of the industry standards formulated by the Ministry of Transport, and have the advantages of uniform dispersion, no blackening, high luminous brightness, long duration and wide application range.

[0067] Compared with Examples 1-4 and Comparative Examples 1-2, it can be seen that the reflective glass beads can reflect road markings under the illumination of headlights when a vehicle approaches, while the light-storage glass beads can store energy under sunlight during the day and display markings through self-luminescence at night. In addition, the reflective glass beads and light-storage glass beads in a suitable ratio range can achieve continuous recycling of light storage performance and light-emitting performance, and ensure the light intensity, indicate the position, and provide a wider field of view. Too few reflective glass beads result in insufficient reflective performance and reduced brightness.

[0068] By comparing Example 1 with Examples 6-10, it can be seen that the performance indicators of the traffic facility sign with dual functions of reflection and light storage obtained in Example 10, such as fluorescence performance, adhesive performance and dispersibility, are all relatively poor. It is analyzed that the modified rare earth phosphor, nano silicon powder and high-purity alumina in the disclosed ratio range of the present application are mixed and used to increase the stability and fluorescence intensity of the light-storing glass bead material, and can enhance its bonding performance with the material. Too much of this type of rare earth phosphor will increase the cost of the material on the one hand, which is not conducive to promotion and use. On the other hand, it will have a certain impact on optical stability, and the luminous intensity will gradually decay, which is not conducive to long-term light storage. Too much nano silicon powder will cause excessive light scattering when emitting light at night, which is not conducive to the driver's accurate recognition of the content of the road sign. The rare earth phosphor is modified by vinyl trimethoxysilane grafting, so that the dispersion performance of the rare earth phosphor in the system is improved, agglomeration is avoided, and the fluorescent lighting is uniform. The vinyl modification can increase its bonding strength with the adjacent film layer, further improve the bonding effect of the traffic facility sign, so as to improve the overall stability and durability of the traffic facility sign.

[0069] By comparing Example 1, Example 11 and Comparative Example 3, it can be seen that adding titanium dioxide to the water-based EAU adhesive can provide good hiding power and decorative effects, and can reflect and enhance the luminescence of the luminous and reflective layers, making their luminous intensity higher, and the reflection range can enable the driver to accurately identify the surrounding guardrails and road directions through facility signs, and the combination with the water-based EAU adhesive can further enhance the mechanical strength and adhesion of the adhesive layer, thereby extending the service life of the coating.

[0070] By comparing Example 1 with Example 12 and Comparative Example 4, it can be seen that the addition of perhydropolysilazane can interact with the luminous and reflective layers to improve their mechanical stability and adhesion, while improving the lubricity of the coating surface, which is beneficial for water droplets to roll off the mask layer on rainy days and achieve a better self-cleaning effect; the fluorine-containing compound increases the corrosion resistance of the mask layer, can improve the oleophobicity and aging resistance of the coating, and enhances the light transmittance of the mask layer.

[0071] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A traffic facility sign with dual functions of reflection and light storage, characterized in that: The invention comprises, from bottom to top, a non-woven fabric layer (1), an adhesive layer (2), a luminous and reflective layer (3) and a mask layer (4); the luminous and reflective layer (3) comprises reflective glass beads and light-storing glass beads, wherein the mass ratio of the reflective glass beads to the light-storing glass beads is 1:(0.5-2.5).

2. The traffic facility sign with dual functions of reflection and light storage according to claim 1, characterized in that: The light-storage glass beads include modified rare earth fluorescent powder, nano silicon powder and high-purity aluminum oxide.

3. The traffic facility sign with dual functions of reflection and light storage according to claim 2, characterized in that: The mass ratio of the modified rare earth phosphor, nano-silicon powder and high-purity alumina is (2-5): (1-3):

1.

4. The traffic facility sign with dual functions of reflection and light storage according to claim 2, characterized in that: The preparation method of the modified rare earth phosphor comprises: adding the rare earth phosphor into anhydrous ethanol, performing ultrasound for 20-25 minutes, adding vinyl trimethoxy silane, stirring evenly, gradually adding dilute H2SO4 to adjust the pH to 3-4, heating and stirring at 85-90°C for reaction for 2-4 hours, filtering and drying to obtain the modified rare earth phosphor.

5. The traffic facility sign with dual functions of reflection and light storage according to claim 1, characterized in that: The adhesive layer (2) comprises titanium dioxide and water-based EAU adhesive.

6. The traffic facility sign with dual functions of reflection and light storage according to claim 5, characterized in that: The mass ratio of the titanium dioxide to the water-based EAU adhesive is 1:(3-5).

7. The traffic facility sign with dual functions of reflection and light storage according to claim 1, characterized in that: The method for preparing the mask layer comprises: adding 100-120 parts by mass of ethanol to 11-16 parts by mass of perhydropolysilazane, stirring for 30-45 minutes, adding 2-5 parts by mass of a fluorine-containing compound and 0.5-1 parts by mass of a leveling agent, and ultrasonically dispersing for 15-20 minutes to obtain a spray slurry for the mask layer.

8. The method for preparing a traffic facility sign with dual functions of reflection and light storage according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: adding 3-8 parts by weight of titanium dioxide to 15-19 parts by weight of water-based EAU adhesive and 40-50 parts by weight of N,N-dimethylformamide and mixing them evenly to obtain an adhesive layer (2) mixture; applying the adhesive layer (2) mixture on a non-woven fabric base film by scraping; immediately and evenly spreading a mixture of luminous and reflective layer (3) glass bead particles after the adhesive layer (2) is scraped, and then entering a first drying channel for aging; spraying a mask layer spray slurry, entering a second drying channel for aging, and obtaining a traffic facility sign with dual functions of reflection and light storage.

9. The method for preparing a traffic facility sign with dual functions of reflection and light storage according to claim 8, characterized in that: The temperature of the first drying channel is 70-90℃ and the air volume is 15-20 / RPM; the temperature of the second drying channel is 115-125℃.

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