Luminous warning anti-electric shock coating and its preparation method and application

Abstract

The present invention relates to a luminous warning anti-electric shock coating, its preparation method, and application. The luminous warning anti-electric shock coating comprises an acrylic resin and microspheres loaded with a long-lasting glow powder; the microspheres loaded with the long-lasting glow powder are composed of a eutectic formed by L- and D-polylactic acid and coated with the long-lasting glow powder. The luminous warning anti-electric shock coating not only improves nighttime visibility of overhead power transmission lines, preventing accidental contact, but also exhibits certain electrical insulation properties, further reducing the risk of electric shock and demonstrating its strong practicality.

Description

Technical Field

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

[0002] Transmission lines are an integral part of the power grid, playing a vital role in transmitting, distributing, and exchanging electrical energy. With the continued advancement of urbanization and road construction, people's activities are expanding, and contact with transmission lines is becoming increasingly frequent, posing risks to the power system and people's personal safety. Especially at night, with low visibility and limited vision, it's difficult to detect overhead transmission lines in a timely manner, posing a significant safety hazard. Accidental contact with transmission lines can cause electric shock, not only causing line tripping and widespread power outages, resulting in severe economic losses, but can also be life-threatening and result in casualties.

[0003] To prevent these accidents, safety warning signs are often installed along high-voltage transmission lines in complex, accident-prone areas such as roads and open fields. These signs serve as reminders of the high-voltage conductors. However, these signs are typically hung on towers, providing only a partial warning and failing to fully cover the entire transmission line.

[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 coating and its preparation method and application. The luminous warning anti-electric shock coating can not only make the high-altitude power transmission lines visible at night 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 coating, wherein the luminous warning anti-electric shock coating comprises an 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 a 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, while if the particle size is too high, precipitation is easy to occur during the preparation of the coating of the present invention, and a good dispersion effect cannot be achieved. 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 .

[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 an interfacial stabilizer to the oil phase suspension of step (a), 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 in step (a) is 5-15 g / 100 mL, for example, 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 or a combination of at least two of dichloromethane, chloroform or n-butanol, more preferably dichloromethane.

[0025] In the present invention, any organic reagent 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, more preferably 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, etc.

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

[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 for the coating is simple and 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 serve as a warning 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 coating further 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 together to play a synergistic role, 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%.

[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 loaded with long afterglow powder allows the coating to construct a micro-nano-sized 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 or a combination of at least two of a dispersant, a film-forming aid, a defoaming agent or a leveling agent.

[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 and anti-electric shock coating.

[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 present 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 and 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 non-polluting and non-toxic, and is environmentally friendly. It can be used not only for power transmission lines, but also in the fields of anti-counterfeiting, decoration, indication, and public transportation.

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

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

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

[0058] (3) Furthermore, the luminous warning and 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-lasting glow powder, the luminous brightness can be guaranteed while reducing the amount of long-lasting glow luminescent material added;

[0059] (4) Furthermore, the addition of the specific microspheres loaded with long afterglow powder of the present invention enables the coating to construct a micro-nano-sized roughness on its surface. After the addition of a hydrophobic agent, a special water-resistant structure can be formed on the film-forming surface of the coating, thereby changing the water contact angle, and thus 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 and luminous photos 6 hours later of the luminous warning anti-electric shock coatings corresponding to Examples 9, 11, and 12; 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 6 hours later is Example 9, Example 11, and Example 12, respectively;

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

[0067] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific embodiments. However, the following examples are merely 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 Purchase manufacturer and brand Hydroxylated acrylic resin emulsion Chengdu Kelong Chemical Reagent Factory, industrial grade, CAS140-88-5 Poly (L-lactic acid) Zhejiang Hisun Biomaterials Co., Ltd., REVODE213S Dextrorotatory polylactic acid Changchun Shengboma Biomaterial 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 Chemical Plant, Sichuan Province, analytical grade

[0071] Other additives include dispersant (diethylene glycol hexyl ether), film-forming aid (propylene glycol butyl ether), polyether defoamer and polyether leveling agent, among which polyether defoamer and polyether leveling agent were purchased from Pujiang Fine Chemical Factory in Sichuan Province and were of analytical grade.

[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 both L-polylactic acid and D-polylactic acid in dichloromethane, and adding the long afterglow powder at a rotation speed of 2000-5000 r / min to form a stable oil phase suspension;

[0075] (b) adding dropwise the oil phase suspension in step (a) to a polyvinyl alcohol aqueous solution (concentration: 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] The preparation parameters and properties of the obtained microspheres involved in Preparation Examples 1-12 and Comparative Preparation Example 1 are shown in Table 2.

[0079] Table 2

[0080]

[0081] In conjunction with Table 2, by comparing Preparation Examples 1-8 with Comparative Preparation Example 1, it can be seen 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, under the condition that 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 coating, wherein the amount of deionized water added is the remainder, and its addition makes the total content of each component in the coating 100%.

[0084] The compositions and contents of the components 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: first mixing 20% ​​of hydroxyl acrylic resin emulsion, 8% of glass powder and deionized water (3.4%), then adding 60% of long afterglow powder, and dispersing it evenly at high speed (4000 r / min). Continuing 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 dispersing it evenly at low speed (1500 r / min) to obtain the luminous warning anti-electric shock coating.

[0090] The coatings obtained in Examples 1-40 and Comparative Examples 1-4 were subjected to performance tests using the following test methods and standards:

[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 at room temperature using a contact angle goniometer.

[0092] (2) Luminescence performance test: The paint was applied to the surface of a cylindrical substrate (30 cm, D = 10 cm), and placed outdoors in a dry state to absorb sunlight for 6 h. It was then placed in a dark environment to record the luminescence and optical photographs were taken every 6 h. This 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 and 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 and anti-electric shock coating provided by the present invention has good hydrophobicity and good luminescence performance, a long initial luminescence time, 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 and 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, an increase in the content of acrylic resin can significantly improve the hydrophobicity of the resulting coating; the comparison between Example 12 and Example 10 shows that, within a certain range, an increase in the content of microspheres loaded with a specific long afterglow powder can improve the comprehensive performance of the resulting 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 resulting coating is slightly increased, but its luminescence performance, especially the luminescence stability, is 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 resulting 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 luminescence properties, but its luminescence stability is poor and cannot meet the requirements of long-term energy storage and 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 in FIG. 1 , the peak positions of the infrared spectra of the coating prepared in Example 12 are consistent with those of the microspheres; Figure 6 and 7 As shown, the coating obtained by the present invention has good luminescence performance and good luminescence stability, and can achieve long-term energy storage and luminescence.

[0103] In summary, the luminous warning and anti-electric shock coating provided by the present invention not only has good hydrophobicity, which can improve its electrical insulation, self-cleaning, and stain resistance to a certain extent; it also has good luminous stability and can store energy and emit light for a long time. Obviously, this luminous warning and anti-electric shock coating can not only provide nighttime visibility of high-altitude power transmission lines, playing a role in preventing accidental touch, but also has a certain degree of 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 embodiment of the present invention, but the scope of protection 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 fall within the scope of protection and disclosure of the present invention.

Claims

1. A luminous warning anti-electric shock paint, characterized in that: The luminous warning and anti-electric shock paint comprises acrylic resin and microspheres loaded with long afterglow powder; The microspheres loaded with long afterglow powder are composed of a eutectic formed by left-handed polylactic acid and right-handed polylactic acid and coated with long afterglow powder; Based on the total mass of the luminous warning anti-electric shock coating being 100%, the content of the acrylic resin is 15-20%, and the content of the microspheres is 50-60%; The particle size of the microspheres is 5-20 μm; 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 the microspheres loaded with the long afterglow powder.

2. The luminous warning anti-electric shock paint according to claim 1, characterized in that: The acrylic resin is neutral or weakly acidic.

3. The luminous warning anti-electric shock paint according to claim 1, characterized in that: The acrylic resin includes hydroxy acrylic resin and / or methacrylic resin.

4. The luminous warning anti-electric shock paint according to claim 1, characterized in that: The long afterglow powder in the microspheres includes 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 .

5. The luminous warning anti-electric shock paint according to claim 1, characterized in that: The mass ratio of the L-polylactic acid to the D-polylactic acid in step (a) is 1:

1.

6. The luminous warning anti-electric shock paint according to claim 1, characterized in that: The concentrations of the L-polylactic acid and the D-polylactic acid in the organic solvent in step (a) are both 5-15 g / 100 mL.

7. The luminous warning anti-electric shock paint according to claim 1, characterized in that: The organic solvent in step (a) includes any one of dichloromethane, chloroform or n-butanol, or a combination of at least two of them.

8. The luminous warning anti-electric shock paint according to claim 7, characterized in that: The organic solvent in step (a) is dichloromethane.

9. The luminous warning anti-electric shock paint according to claim 1, characterized in that: 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%.

10. The luminous warning anti-electric shock paint according to claim 1, characterized in that: The stirring in step (a) is carried out at a rotation speed of 2000-5000 r / min.

11. The luminous warning anti-electric shock paint according to claim 1, characterized in that: The oil phase suspension in step (b) is added dropwise.

12. The luminous warning anti-electric shock paint according to claim 1, characterized in that: The interfacial stabilizer in step (b) includes polyvinyl alcohol and / or polyvinyl pyrrolidone.

13. The luminous warning anti-electric shock paint according to claim 12, characterized in that: The interfacial stabilizer in step (b) is a polyvinyl alcohol aqueous solution.

14. The luminous warning anti-electric shock paint according to claim 13, characterized in that: The concentration of the polyvinyl alcohol aqueous solution is 4-10 g / 100 mL.

15. The luminous warning anti-electric shock paint according to claim 1, characterized in that: In step (b), the volume ratio of the oil phase suspension to the interfacial stabilizer is 1:(2-2.5).

16. The luminous warning anti-electric shock paint according to claim 1, characterized in that: The stirring in step (b) is carried out at a rotation speed of 2000-5000 r / min.

17. The luminous warning anti-electric shock paint according to claim 1, characterized in that: The temperature for removing the solvent in step (c) is 45-55°C.

18. The luminous warning anti-electric shock paint according to claim 1, characterized in that: The method of removing the solvent in step (c) is filtration.

19. The luminous warning anti-electric shock paint according to claim 1, characterized in that: The detergent used for washing in step (c) is water.

20. The luminous warning anti-electric shock paint according to claim 1, characterized in that: The drying method in step (c) is hot air drying.

21. The luminous warning anti-electric shock paint according to claim 1, 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.

22. The luminous warning anti-electric shock paint according to claim 21, characterized in that: Based on the total mass of the luminous warning anti-electric shock paint being 100%, the content of the inorganic filler is 8-12%.

23. The luminous warning anti-electric shock paint according to claim 21, characterized in that: The inorganic filler includes glass powder.

24. The luminous warning anti-electric shock paint according to claim 21, characterized in that: Based on the total mass of the luminous warning anti-electric shock coating being 100%, the content of the hydrophobic agent is 2-6%.

25. The luminous warning anti-electric shock paint according to claim 21, characterized in that: 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.

26. The luminous warning anti-electric shock paint according to claim 21, characterized in that: Based on the total mass of the luminous warning anti-electric shock paint being 100%, the content of the other additives is 2-5%.

27. The luminous warning anti-electric shock paint according to claim 21, characterized in that: 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 of them.

28. The luminous warning anti-electric shock paint according to claim 21, characterized in that: The water includes any one of tap water, deionized water or distilled water, or a combination of at least two of them.

29. A method for preparing the luminous warning anti-electric shock coating according to any one of claims 1 to 28, characterized in that: The preparation method comprises the following steps: The acrylic resin and the microspheres are mixed to obtain the luminous warning and anti-electric shock coating.

30. The method for preparing the luminous warning anti-electric shock coating according to claim 29, characterized in that: The mixing is performed under stirring.

31. The method for preparing the luminous warning anti-electric shock coating according to claim 30, characterized in that: The stirring speed is 1500-2000 r / min.

32. Use of the luminous warning and anti-electric shock coating according to any one of claims 1 to 28 in power transmission lines.

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