Noctilucent warning anti-electric shock coating as well as preparation method and application thereof

Abstract

The invention relates to a noctilucent warning anti-electric shock coating as well as a preparation method and application thereof. The noctilucent warning anti-electric shock coating comprises acrylic resin and microspheres loaded with long afterglow powder, the microspheres loaded with the long afterglow powder are formed by coating the long afterglow powder with an eutectic formed by poly-L-lactic acid and poly-D-lactic acid. The noctilucent warning anti-electric shock coating disclosed by the invention not only can endow a high-altitude transmission conductor with night visibility and play a role in preventing mistaken touch, but also has certain electrical insulating property, can further reduce the risk of electric shock, and has relatively high practicability.

Description

Technical Field

[0001] The present invention relates to the technical field of functional coatings, and in particular to a luminous warning anti-electric shock coating and a preparation method and application thereof. Background Art

[0002] Transmission wires are an indispensable part of the power grid, playing an important role in the transmission, distribution and exchange of electrical energy. With the continuous advancement of urbanization and road traffic construction, people's activities are expanding, and contact with transmission wires is becoming more and more frequent, which brings risks to the power system and people's own safety. Especially at night, visibility is low and vision is limited, making it difficult to detect high-altitude transmission wires in time, posing a huge safety hazard. If you accidentally come into contact with a transmission wire and get an electric shock, it will not only cause the line to trip, causing a large-scale power outage, causing serious economic losses, but may also endanger lives and cause casualties.

[0003] In order to avoid the above accidents, safety warning signs are often set up in complex outdoor accident-prone areas such as roads and wilderness along the high-voltage transmission lines to serve the purpose of reminding people to pay attention to the high-voltage wires. However, high-voltage transmission line warning signs are usually hung on poles and towers, which can only serve as local warnings and cannot fully cover the transmission lines.

[0004] Therefore, considering the actual situation of preventing accidental touch at night, it is of great significance to develop a luminous warning anti-electric shock coating for power transmission lines. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a luminous warning anti-electric shock paint and its preparation method and application. The luminous warning anti-electric shock paint can not only give the high-altitude power transmission lines night visibility and prevent accidental touch, but also has certain electrical insulation properties, which can further reduce the risk of electric shock.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a luminous warning anti-electric shock paint, the luminous warning anti-electric shock paint comprising acrylic resin and microspheres loaded with long afterglow powder;

[0008] The microspheres loaded with long afterglow powder are composed of long afterglow powder coated with eutectic formed by left-handed polylactic acid and right-handed polylactic acid.

[0009] In the present invention, the use of microspheres specifically loaded with long afterglow powder improves its dispersion effect in the coating, effectively avoiding the disadvantages of uneven dispersion and easy precipitation when the long afterglow powder is directly used in the preparation of the coating, thereby improving the luminous performance of the resulting coating, and further obtaining a luminous warning and anti-electric shock coating with long-term energy storage and luminescence and good weather resistance.

[0010] Preferably, based on the total mass of the luminous warning anti-electric shock coating as 100%, the content of the acrylic resin is 15-20%, for example, it can be 15%, 15.5%, 16%, 16.5%, 17%, 17.5%, 18%, 18.5%, 19%, 19.5% and 20%, etc.

[0011] Preferably, the acrylic resin is neutral or weakly acidic.

[0012] Preferably, the acrylic resin includes hydroxy acrylic resin and / or methacrylic resin.

[0013] Preferably, based on the total mass of the luminous warning anti-electric shock coating as 100%, the content of the microspheres is 50-60%, for example, it can be 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59% or 60%, etc.

[0014] In the present invention, when the content of microspheres is 50-60%, it has moderate hydrophobicity and luminescent properties. When its content is lower than 50%, the luminescent intensity of the overall coating decreases; when its content is higher than 60%, the microspheres are prone to agglomeration, resulting in poor uniformity of the coating, which is not conducive to the dispersion of the microspheres in the coating.

[0015] Preferably, the particle size of the microspheres is 5-20 μm, for example, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 12 μm, 14 μm, 16 μm, 18 μm or 19 μm.

[0016] In the present invention, if the particle size of the microspheres is too low, it is difficult to control the production, and if the particle size is too high, it is easy to precipitate during the preparation of the coating of the present invention and cannot exert a good dispersion effect. In the actual production process, the specific particle size is 5-80 μm, preferably 5-20 μm.

[0017] Preferably, the long afterglow powder in the microspheres comprises SrAl2O4:Eu 2+ ,Dy 3+ 、Sr4Al 14 O 25 :Eu 2+ ,Dy 3+ or Sr2MgSi2O7:Eu 2+ ,Dy 3+ Any one or a combination of at least two of the following.

[0018] Preferably, the method for preparing the microspheres comprises the following steps:

[0019] (a) mixing L-polylactic acid and D-polylactic acid with an organic solvent, and adding long afterglow powder under stirring to form an oil phase suspension;

[0020] (b) adding the oil phase suspension described in step (a) to an interfacial stabilizer, stirring and collecting the formed oil phase droplets;

[0021] (c) removing the solvent from the oil phase droplets in step (b), washing, and drying to obtain microspheres loaded with the long afterglow powder.

[0022] Preferably, the mass ratio of the L-polylactic acid to the D-polylactic acid in step (a) is 1:1.

[0023] Preferably, the concentration of the L-polylactic acid and the D-polylactic acid in the organic solvent described in step (a) is 5-15 g / 100 mL, for example, it can be 5 g / 100 mL, 6 g / 100 mL, 7 g / 100 mL, 8 g / 100 mL, 9 g / 100 mL, 10 g / 100 mL, 11 g / 100 mL, 12 g / 100 mL, 13 g / 100 mL, 14 g / 100 mL or 15 g / 100 mL, etc.

[0024] Preferably, the organic solvent in step (a) comprises any one of dichloromethane, chloroform or n-butanol or a combination of at least two thereof, more preferably dichloromethane.

[0025] In the present invention, organic reagents with good solubility for L-polylactic acid and D-polylactic acid can achieve similar technical effects, and there is no special limitation on this. In specific applications, dichloromethane has the best effect, so it is described as a representative.

[0026] Preferably, based on the total mass of L-polylactic acid and D-polylactic acid as 100%, the amount of the long afterglow powder added in step (a) is 50-80%, for example, it can be 52%, 55%, 58%, 60%, 63%, 65%, 68%, 70%, 75% or 78%, etc.

[0027] Preferably, the stirring in step (a) is carried out at a rotation speed of 2000-5000 r / min (for example, 2000 r / min, 2500 r / min, 3000 r / min, 3500 r / min, 4000 r / min, 4500 r / min or 5000 r / min, etc.).

[0028] Preferably, the oil phase suspension in step (b) is added dropwise.

[0029] Preferably, the interfacial stabilizer in step (b) comprises polyvinyl alcohol and / or polyvinyl pyrrolidone, and more preferably is a polyvinyl alcohol aqueous solution.

[0030] Preferably, the concentration of the polyvinyl alcohol aqueous solution is 4-10 g / 100 mL, for example, it can be 4.5 g / 100 mL, 5 g / 100 mL, 5.5 g / 100 mL, 6 g / 100 mL, 6.5 g / 100 mL, 7 g / 100 mL, 7.5 g / 100 mL, 8 g / 100 mL, 8.5 g / 100 mL, 9 g / 100 mL or 9.5 g / 100 mL, etc.

[0031] Preferably, the volume ratio of the oil phase suspension to the interfacial stabilizer in step (b) is 1:(2-2.5), for example, it can be 1:2, 1:2.1, 1:2.2, 1:2.3, 1:2.4 or 1:2.5, etc.

[0032] Preferably, the stirring in step (b) is carried out at a rotation speed of 2000-5000 r / min, for example, it can be 2200 r / min, 2500 r / min, 2800 r / min, 3000 r / min, 3200 r / min, 3500 r / min, 4000 r / min, 45000 r / min or 4800 r / min.

[0033] Preferably, the temperature for removing the solvent in step (c) is 45-55°C, for example, it can be 45°C, 46°C, 47°C, 48°C, 49°C, 50°C, 51°C, 52°C, 53°C, 54°C or 55°C, etc.

[0034] Preferably, the method of removing the solvent in step (c) is filtration.

[0035] Preferably, the detergent used for washing in step (c) is water.

[0036] Preferably, the drying method in step (c) is hot air drying.

[0037] In the present invention, the preparation method of the specific microspheres loaded with long afterglow powder required by the coating is simple, environmentally friendly, ensures the uniform dispersion of the long afterglow powder, and has good compatibility with the coating matrix resin, so that the prepared coating has the characteristics of long-term energy storage and luminescence, good electrical insulation and weather resistance. When it is applied on the transmission wire, it can play a warning role at night, thereby reducing the risk of accidental touch, and has good practical value.

[0038] Preferably, the raw materials of the luminous warning anti-electric shock paint also include at least one of an inorganic filler, a hydrophobic agent, other additives and water.

[0039] Preferably, based on the total mass of the luminous warning anti-electric shock coating as 100%, the content of the inorganic filler is 8-12%, for example, it can be 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5% or 12%, etc.

[0040] Preferably, the inorganic filler includes glass powder.

[0041] In the present invention, by optimizing the coating formula, glass powder is compounded with specific microspheres loaded with long afterglow powder, so that the diffuse reflection of the glass powder and the microspheres loaded with long afterglow powder can work synergistically together, which can reduce the dosage of long afterglow luminescent powder while still ensuring good luminous brightness, and is also beneficial to improving the weather resistance of the coating.

[0042] Preferably, based on the total mass of the luminous warning anti-electric shock coating as 100%, the content of the hydrophobic agent is 2-6%, for example, it can be 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5% or 6%, etc.

[0043] Preferably, the hydrophobic agent includes any one of dodecyl mercaptan, octadecyl mercaptan, tetracosyl mercaptan, mercapto polydimethylsiloxane or (mercapto) methylsiloxane-dimethylsiloxane copolymer, or a combination of at least two thereof.

[0044] In the present invention, the addition of microspheres with specific long afterglow powder enables the coating to construct a micro-nano roughness on its surface. After the addition of a hydrophobic agent, a special water-resistant structure can be formed on the coating film-forming surface, thereby changing its water contact angle, thereby making the coating have good hydrophobicity, self-cleaning, stain resistance, scrub resistance and other properties.

[0045] Preferably, based on the total mass of the luminous warning anti-electric shock coating being 100%, the content of the other additives is 2-5%, for example, 2%, 2.5%, 3%, 3.5%, 4%, 4.5% or 5%.

[0046] Preferably, the other additives include any one of a dispersant, a film-forming aid, a defoaming agent or a leveling agent, or a combination of at least two thereof.

[0047] Preferably, the water includes any one of tap water, deionized water or distilled water, or a combination of at least two of them.

[0048] In a second aspect, the present invention provides a method for preparing the luminous warning anti-electric shock coating as described in the first aspect, the preparation method comprising the following steps:

[0049] The acrylic resin and the microspheres are mixed to obtain the luminous warning anti-electric shock paint.

[0050] Preferably, the mixing is performed under stirring.

[0051] Preferably, the stirring speed is 1000-1500 r / min, for example, it can be 1000 r / min, 1050 r / min, 1100 r / min, 1150 r / min, 1200 r / min, 1250 r / min, 1300 r / min, 1350 r / min, 1400 r / min, 1450 r / min or 1500 r / min, etc.

[0052] The preparation method of the luminous warning anti-electric shock coating provided by the invention has simple process, convenient operation, and easy-to-obtain preparation raw materials, has high economy and practicality, and is convenient for industrial large-scale production.

[0053] In a third aspect, the present invention provides an application of the luminous warning anti-electric shock coating as described in the first aspect in a power transmission line.

[0054] The coating of the present invention has good hydrophobicity and luminescent properties, is pollution-free, non-toxic, and environmentally friendly, and can be used not only for power transmission lines, but also for anti-counterfeiting, decoration, indication, public transportation, and other fields.

[0055] Compared with the prior art, the present invention has at least the following beneficial effects:

[0056] (1) The luminous warning anti-electric shock coating provided by the present invention has good hydrophobicity, fluorescence and luminescence, good luminous stability, and can store energy and emit light for a long time. That is, the luminous warning anti-electric shock coating of the present invention can not only provide nighttime visibility for high-altitude power transmission wires and prevent accidental touch, but also has certain electrical insulation, which can further reduce the risk of electric shock and has strong practicality;

[0057] (2) The addition of microspheres loaded with long afterglow powder in the luminous warning anti-electric shock coating provided by the present invention improves the dispersion effect of the long afterglow powder, making the luminescence more uniform, thereby ensuring the luminescence effect and weather resistance of the obtained coating;

[0058] (3) Furthermore, the luminous warning anti-electric shock coating provided by the present invention uses glass powder as an inorganic filler. Through the synergistic effect between the diffuse reflection of the glass powder and the microspheres loaded with long afterglow powder, the luminous brightness can be guaranteed while reducing the amount of long afterglow luminescent material added;

[0059] (4) Furthermore, the addition of the specific microspheres loaded with long afterglow powder of the present invention allows the coating to construct a micro-nano-sized roughness on its surface. After the addition of a hydrophobic agent, a special water-repellent structure can be formed on the coating film-forming surface, thereby changing the water contact angle, thereby making the coating have good hydrophobicity, self-cleaning, stain resistance, scrub resistance and other properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 This is the SEM spectrum of the coating obtained in Example 12;

[0061] Figure 2 This is the SEM spectrum of the coating obtained in Comparative Example 1;

[0062] Figure 3 This is the SEM spectrum of the microspheres loaded with long afterglow powder in Example 12;

[0063] Figure 4 This is the infrared spectrum of the microspheres loaded with long afterglow powder corresponding to Example 12;

[0064] Figure 5 This is the infrared spectrum of the luminous warning anti-electric shock coating obtained in Example 12;

[0065] Figure 6 These are initial luminous photos of the luminous warning anti-electric shock coatings corresponding to Examples 9, 11, and 12, and luminous photos after 6 hours; wherein the arrangement order of the three luminous warning anti-electric shock coatings from left to right in the initial luminous photos and the luminous photos after 6 hours is respectively Example 9, Example 11, and Example 12;

[0066] Figure 7 These are the initial luminous photographs and the luminous photographs 6 hours after repeated use of the luminous warning anti-electric shock coatings corresponding to Examples 9, 11 and 12; among them, the arrangement order of the three luminous warning anti-electric shock coatings from left to right in the initial luminous photographs and the luminous photographs after 6 hours are respectively Example 9, Example 11 and Example 12. DETAILED DESCRIPTION

[0067] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and through specific implementation methods. However, the following examples are only simplified examples of the present invention and do not represent or limit the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the claims.

[0068] Some of the raw materials used in the following examples are shown in Table 1.

[0069] Table 1

[0070] raw material Buy manufacturers and brands Hydroxylated acrylic resin emulsion Chengdu Kelong Chemical Reagent Factory, industrial grade, CAS140-88-5 Poly(L-lactic acid) Zhejiang Hisun Biomaterials Co., Ltd., REVODE213S Poly(D-lactic acid) Changchun Sanboma Biomaterials Co., Ltd., weight average molecular weight is 110,000 Polyvinyl alcohol Chengdu Kelong Chemical Reagent Factory, PEG4000, analytical grade Hydrophobic Agent Dodecyl mercaptan, Pujiang Fine Chemicals Plant, Sichuan Province, analytical grade

[0071] Other additives include dispersants (diethylene glycol hexyl ether), film-forming aids (propylene glycol butyl ether), polyether defoamers and polyether leveling agents, among which the polyether defoamers and polyether leveling agents were purchased from Pujiang Fine Chemical Factory in Sichuan Province and were analytically pure.

[0072] Preparation Examples 1-12 and Comparative Preparation Example 1

[0073] Preparation Example 1-12: Microspheres loaded with long afterglow powder were prepared according to the following preparation method:

[0074] (a) dissolving L-polylactic acid and D-polylactic acid in a mass ratio of 1:1 in dichloromethane (100 mL) to obtain a concentration of 10 g / 100 mL of L-polylactic acid and D-polylactic acid in dichloromethane, and adding long afterglow powder at a speed of 2000-5000 r / min to form a stable oil phase suspension;

[0075] (b) dropping the oil phase suspension in step (a) into a polyvinyl alcohol aqueous solution (concentration of 6 g / 100 mL), stirring at the same speed as in step (a) and collecting the formed oil phase droplets;

[0076] (c) filtering the oil phase droplets collected in step (b) at 50° C. to remove the solvent, and then washing with water and drying with hot air to obtain microspheres loaded with long afterglow powder.

[0077] The difference between Preparation Example 1 and Preparation Example 5 is that no long afterglow powder is added in step (a), and the rest of the preparation method is the same as Preparation Example 5.

[0078] Among them, the preparation parameter conditions involved in Preparation Examples 1-12 and Comparative Preparation Example 1 and the properties of the obtained microspheres are shown in Table 2.

[0079] Table 2

[0080]

[0081] Combined with Table 2, it can be seen from the comparison of Preparation Examples 1-8 with Comparative Preparation Example 1 that the addition of long afterglow powder will cause the specific surface area of ​​the microspheres to decrease, and within a certain range, the more long afterglow material is added, the greater the decrease in its specific surface area. In addition, in the preparation process of microspheres, when other conditions remain unchanged, the higher the stirring speed of step (b), the smaller the particle size of the obtained microspheres. If the particle size of the microspheres is too low, it is not easy to control the production, and if the particle size is too high, it is easy to precipitate in the preparation of the coating of the present invention, and a good dispersion effect cannot be exerted. In the actual production process, the specific particle size is 5-80μm, preferably 5-20μm.

[0082] Examples 1-40 and Comparative Examples 1-3

[0083] Mix the hydroxy acrylic resin emulsion, glass powder and deionized water and stir evenly. Then add the microspheres and disperse them evenly at high speed (4000r / min). Continue to add other additives (dispersant 1%, leveling agent 0.6%, film-forming aid 0.5%, defoaming agent 1.5%) and hydrophobic agent, and disperse them evenly at low speed (1500r / min) to obtain the luminous warning anti-electric shock paint, wherein the amount of deionized water added is the remainder, and its addition makes the sum of the contents of each component in the paint 100%.

[0084] Among them, the composition and content of each component in Examples 1-40 and Comparative Examples 1-3 are shown in Table 3.

[0085] Table 3

[0086]

[0087]

[0088] Comparative Example 4

[0089] This comparative example provides a luminous warning anti-electric shock coating, and the preparation method of the luminous warning anti-electric shock coating comprises: firstly mixing 20% ​​of hydroxy acrylic resin emulsion, 8% of glass powder and deionized water (3.4%), and then adding 60% of long afterglow powder, and dispersing it evenly at high speed (4000r / min). Continue to add 3.6% of other additives (dispersant 1%, leveling agent 0.6%, film-forming aid 0.5%, defoaming agent 1.5%) and 5% of hydrophobic agent, and disperse it evenly at low speed (1500r / min) to obtain the luminous warning anti-electric shock coating.

[0090] The coatings obtained in the above Examples 1-40 and Comparative Examples 1-4 were subjected to performance tests, and the test methods / standards were as follows:

[0091] (1) Water contact angle: Surface wettability was measured using a contact angle tester (WCA, DSA25, Krüss, Germany). The water contact angle (WCA) of the paint surface was measured by a contact angle goniometer at room temperature.

[0092] (2) Luminescence performance test: The paint was applied to the surface of a cylindrical substrate (30 cm, D = 10 cm), placed outdoors in a dry state to absorb sunlight for 6 h, and then placed in a dark environment to record the luminescence. Optical photographs were taken every 6 h, and this process was repeated for 30 days.

[0093] The test results are shown in Table 4.

[0094] Table 4

[0095]

[0096]

[0097] The test results show that:

[0098] (1) It can be seen from Examples 1-40 that the water contact angle of the luminous warning anti-electric shock coating provided by the present invention is 100.3°-137.4°, the initial luminescence time is 4.1-6.5h, and the luminescence time after 30 days is 3.3-6.3h. That is, the luminous warning anti-electric shock coating provided by the present invention has both good hydrophobicity and good luminescence performance, a long initial luminescence time and good luminescence stability, and can achieve the purpose of long-term energy storage and luminescence.

[0099] (2) It can be seen from Examples 1-40 that the comprehensive performance of the luminous warning anti-electric shock coating obtained in Example 12 is the best, with a water contact angle of 137.4°, an initial luminescence time of 6.2h, and a luminescence time of 6.1h after 30 days, and good luminescence stability. The comparison between Example 12 and Example 11 shows that within a certain range, the increase in the content of acrylic resin can significantly improve the hydrophobicity of the obtained coating; the comparison between Example 12 and Example 10 shows that within a certain range, the increase in the content of microspheres loaded with a specific long afterglow powder can improve the comprehensive properties of the obtained coating, such as hydrophobicity and luminescence performance; the comparison between Example 9, Example 11, Example 39 and Example 40 shows that when the content of microspheres is too high or too low, the hydrophobicity of the obtained coating is slightly increased, but its luminescence performance, especially the luminescence stability, will be significantly reduced.

[0100] (3) Comparative Example 1 shows that the coating obtained from the microspheres without long afterglow powder loading has certain hydrophobic properties but does not have luminescent properties. Furthermore, Comparative Examples 2 and 3 show that if the microspheres without long afterglow powder loading are not added during the preparation process, the obtained coating has poor hydrophobicity and also does not have luminescent properties.

[0101] (4) The comparison between Examples 1-40 and Comparative Example 4 shows that the coating prepared directly by using a specific content of long afterglow powder has certain luminescent properties, but its luminescent stability is poor and cannot meet the requirements of long-term energy storage luminescence.

[0102] like Figure 1 and Figure 2 As shown, by comparing Example 12 with Comparative Example 1, it can be found that the coating obtained by the present invention has a good dispersion effect, which is beneficial to improving the weather resistance of the coating during actual use; Figure 3 As shown, the preparation method provided by the present invention can obtain uniformly dispersed microspheres loaded with long afterglow powder; Figure 4 and Figure 5As shown, the peak positions of the infrared spectra of the coating prepared in Example 12 and the microspheres are consistent; Figure 6 and 7 As shown, the coating obtained by the present invention has good luminescent properties and good luminescent stability, and can achieve long-term energy storage and luminescence.

[0103] In summary, the luminous warning anti-electric shock coating provided by the present invention not only has good hydrophobicity, and can improve its electrical insulation, self-cleaning and anti-fouling performance to a certain extent; it also has good luminous stability and can store energy for a long time. Obviously, the luminous warning anti-electric shock coating can not only give the high-altitude power transmission wires night visibility and prevent accidental touch, but also has a certain electrical insulation, which can further reduce the risk of electric shock and has strong practicality.

[0104] The applicant declares that the above is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention shall fall within the protection scope and disclosure scope of the present invention.

Claims

1. A luminous warning anti-electric shock paint, characterized in that: The luminous warning anti-electric shock paint comprises acrylic resin and microspheres loaded with long afterglow powder; The microspheres loaded with long afterglow powder are composed of long afterglow powder coated with eutectic formed by left-handed polylactic acid and right-handed polylactic acid.

2. The luminous warning anti-electric shock paint according to claim 1 is characterized in that: Taking the total mass of the luminous warning anti-electric shock paint as 100%, the content of the acrylic resin is 15-20%; Preferably, the acrylic resin is neutral or weakly acidic; Preferably, the acrylic resin includes hydroxy acrylic resin and / or methacrylic resin.

3. The luminous warning anti-electric shock paint according to claim 1 or 2, characterized in that: Taking the total mass of the luminous warning anti-electric shock paint as 100%, the content of the microspheres is 50-60%; Preferably, the particle size of the microspheres is 5-20 μm; Preferably, the long afterglow powder in the microspheres comprises SrAl2O4:Eu 2+ ,Dy 3+ 、Sr4Al 14 O 25 :Eu 2+ ,Dy 3+ or Sr2MgSi2O7:Eu 2+ ,Dy 3+ Any one or a combination of at least two of the following.

4. The luminous warning anti-electric shock paint according to any one of claims 1 to 3, characterized in that: The preparation method of the microspheres comprises the following steps: (a) mixing L-polylactic acid and D-polylactic acid with an organic solvent, and adding long afterglow powder under stirring to form an oil phase suspension; (b) adding the oil phase suspension described in step (a) to an interfacial stabilizer, stirring and collecting the formed oil phase droplets; (c) removing the solvent from the oil phase droplets in step (b), washing, and drying to obtain microspheres loaded with the long afterglow powder.

5. The luminous warning anti-electric shock paint according to claim 4 is characterized in that: The mass ratio of the left-handed polylactic acid to the right-handed polylactic acid in step (a) is 1:1; Preferably, the concentration of the L-polylactic acid and the D-polylactic acid in the organic solvent in step (a) is 5-15 g / 100 mL; Preferably, the organic solvent in step (a) comprises any one or a combination of at least two of dichloromethane, chloroform or n-butanol, more preferably dichloromethane; Preferably, based on the total mass of L-polylactic acid and D-polylactic acid as 100%, the amount of the long afterglow powder added in step (a) is 50-80%; Preferably, the stirring in step (a) is carried out at a rotation speed of 2000-5000 r / min; Preferably, the oil phase suspension in step (b) is added dropwise; Preferably, the interfacial stabilizer in step (b) comprises polyvinyl alcohol and / or polyvinyl pyrrolidone, and more preferably is a polyvinyl alcohol aqueous solution; Preferably, the concentration of the polyvinyl alcohol aqueous solution is 4-10 g / 100 mL; Preferably, the volume ratio of the oil phase suspension to the interfacial stabilizer in step (b) is 1:(2-2.5); Preferably, the stirring in step (b) is carried out at a rotation speed of 2000-5000 r / min; Preferably, the temperature for removing the solvent in step (c) is 45-55°C; Preferably, the method of removing the solvent in step (c) is filtration; Preferably, the detergent used for washing in step (c) is water; Preferably, the drying method in step (c) is hot air drying.

6. The luminous warning anti-electric shock paint according to any one of claims 1 to 5, characterized in that: The raw materials of the luminous warning anti-electric shock paint also include at least one of an inorganic filler, a hydrophobic agent, other additives and water.

7. The luminous warning anti-electric shock paint according to claim 6, characterized in that: Taking the total mass of the luminous warning anti-electric shock coating as 100%, the content of the inorganic filler is 8-12%; Preferably, the inorganic filler comprises glass powder; Preferably, based on the total mass of the luminous warning anti-electric shock coating as 100%, the content of the hydrophobic agent is 2-6%; Preferably, the hydrophobic agent comprises any one or a combination of at least two of dodecyl mercaptan, octadecyl mercaptan, tetracosyl mercaptan, mercapto polydimethylsiloxane or (mercapto) methylsiloxane-dimethylsiloxane copolymer; Preferably, based on the total mass of the luminous warning anti-electric shock coating being 100%, the content of the other additives is 2-5%; Preferably, the other additives include any one or a combination of at least two of a dispersant, a film-forming aid, a defoaming agent or a leveling agent; Preferably, the water includes any one of tap water, deionized water or distilled water, or a combination of at least two of them.

8. A method for preparing the luminous warning anti-electric shock coating according to any one of claims 1 to 7, characterized in that: The preparation method comprises the following steps: The acrylic resin and the microspheres are mixed to obtain the luminous warning anti-electric shock paint.

9. The method for preparing the luminous warning anti-electric shock coating according to claim 8, characterized in that: The mixing is carried out under stirring; Preferably, the stirring speed is 1500-2000 r / min.

10. Use of the luminous warning anti-electric shock paint according to any one of claims 1 to 7 in power transmission lines.

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