Ion liquid-based basalt nanomaterial modified photo-thermal super-hydrophobic coating, and preparation method and application thereof

Abstract

The application discloses a kind of based on ion liquid modification basalt nanomaterial photo-thermal super-hydrophobic coating and its preparation method and application, including the following mass percentage of components: polyurethane 1%~10%, film forming aid 1%~10%, photo-thermal filler 0.1%~0.5%, super-hydrophobic filler 1%~10%, diluent 60%~90%, dispersant 0.1%~10%.With the characteristics of modifier environment-friendly, mild modification condition, simple operation process, the purpose of efficient dispersion of basalt nanosheet in polyurethane can be achieved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of super-hydrophobic coating, and particularly relates to a light-heat super-hydrophobic coating based on ion liquid modified basalt nanomaterials as well as a preparation method and application thereof. BACKGROUND

[0002] High-voltage transmission lines are usually composed of multiple metal wires and have a hydrophilic surface. In the Jiangnan region where it is prone to freezing rain or extremely cold weather, ice layers may condense on the surface of the transmission lines. When the thickness of the ice layer exceeds the bearing critical value, the power grid lines may be damaged due to overload. Although this situation is not common, once it occurs, it may cause immeasurable economic losses and social problems. The culprit causing such disasters is the icing of transmission lines due to extreme weather, which leads to the overload fracture of the transmission lines. At present, the research on anti-icing coatings is one of the main protective measures to prevent icing. These coatings mainly include three types: light-heat type anti-icing coatings, electric heating type anti-icing coatings and hydrophobic coatings. However, single coatings have their own shortcomings, such as the light-heat type coatings may not work well in insufficient light, the electric heating type coatings may cause large power consumption, and the physicochemical properties of the hydrophobic coatings may not be good.

[0003] Patent CN201220728221.7 discloses a high-voltage transmission line with a nano-coating layer and an anti-icing effect. The coating composition disclosed in the patent is complex, and the preparation method of TiO2 nanoparticles is not disclosed. SUMMARY

[0004] In order to overcome the problems existing in the prior art, the purpose of the present application is to provide a light-heat super-hydrophobic coating based on ion liquid modified basalt nanomaterials as well as a preparation method and application thereof, which has the characteristics of environmentally friendly modifier, mild modification conditions and simple operation process, and can achieve the purpose of high-efficiency dispersion of basalt nanosheets in polyurethane.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] A light-heat super-hydrophobic coating based on ion liquid modified basalt nanomaterials, comprising the following components in mass percentage: polyurethane 1% to 10%, film-forming aid 1% to 10%, light-heat filler 0.1% to 0.5%, super-hydrophobic filler 1% to 10%, diluent 60% to 90%, and dispersant 0.1% to 10%.

[0007] The light-heat filler is ion liquid modified basalt nanosheets, the size of the nanosheets is 10-50 nm in thickness and 5-15 μm in length and width.

[0008] The ionic liquid is one of 1-aminopropyl-3-methylimidazolium hexafluorophosphate, 1-aminyl-3-methylimidazolium tetrafluoroborate, 1-aminyl 3-methyl imidazole bromide, and other amino-functionalized ionic liquids.

[0009] The super-hydrophobic filler is any one of nano-SiO2 and polydimethylsiloxane, and the diameter of the nano-SiO2 is 10-30 nm.

[0010] The diluent is selected from one of cyclohexanone, butyl acetate, and anhydrous xylene.

[0011] The dispersant is selected from one of HY-238, HY-257, and HY-2000.

[0012] The film-forming aid is one of ethylene glycol, propylene glycol, and hexanediol.

[0013] A preparation method of a light-heat super-hydrophobic coating based on ionic liquid modified basalt nanomaterials, comprising the following steps:

[0014] S1. Dissolve the ionic liquid in deionized water to prepare an ionic liquid dispersion; add basalt nanosheet powder to the ionic liquid dispersion, heat to a temperature of 60-100℃, react for 6-24h, centrifuge after the reaction is complete, wash, and dry to obtain ionic liquid modified basalt nanometer powder;

[0015] S2. Divide the diluent into two equal parts, and uniformly disperse nano-SiO2 particles in one part of the diluent; add the ionic liquid modified basalt nanometer powder to the diluent solution containing nano-SiO2 particles, and then add a dispersant, and then ultrasonically disperse at room temperature, an ultrasonic power of 500-1500W, and for 10-15min to obtain a mixed slurry;

[0016] S3. Add polyurethane and polydimethylsiloxane (PDMS) to the mixed slurry, stir until uniform, and obtain a slurry;

[0017] S4. Add a film-forming aid and the other part of the diluent to the slurry obtained in step S3, stir and mix, and then degas at room temperature to obtain a light-heat super-hydrophobic coating of ionic liquid modified basalt nanosheet materials.

[0018] In the step S1, the mass fraction of the ionic liquid dispersion is 1wt.%, and the mass fraction of the basalt nanosheet in the ionic liquid dispersion is 2wt.%.

[0019] In the step S2, the mass fraction of the nano-SiO2 particles in the ionic liquid modified basalt nanosheet light-heat super-hydrophobic coating is 5wt.%-10wt.%.

[0020] The photo-thermal super-hydrophobic coating based on the ion liquid modified basalt nanosheet nanomaterial is obtained by spraying and drying and curing the photo-thermal super-hydrophobic coating material of the ion liquid modified basalt nanosheet nanomaterial, and is used for high-voltage transmission lines.

[0021] The beneficial effects of the present application are:

[0022] (1) The present application uses amino-functionalized ion liquid to modify basalt nanosheets, and the modifier is environmentally friendly, the modification conditions are mild, and the operation process is simple. The modification of the ion liquid avoids the agglomeration problem of basalt nanosheets in polyurethane, greatly improves the dispersibility of the basalt nanosheets in polyurethane, and further improves the photo-thermal conversion ability of the photo-thermal super-hydrophobic coating of the ion liquid modified basalt nanomaterial.

[0023] (2) The present application uses few-layer ion liquid modified basalt nanosheets as photo-thermal fillers, combines the photo-thermal effect of basalt with super-hydrophobic properties, uses hydrophobic properties to prevent surface icing, and uses light source irradiation to heat the coating surface to achieve surface deicing. The problems of large energy consumption and limited deicing time of traditional deicing technologies such as gas heating deicing, electric heating deicing and mechanical deicing are effectively avoided.

[0024] (3) The nano-particle SiO2 is used to construct a rough surface structure, has high thermal stability, mechanical stability, UV aging resistance, corrosion resistance and other characteristics. The polydimethylsiloxane (PDMS) is selected to reduce the surface free energy and improve the hydrophobic properties, and has adhesion, which enhances the adhesion between the nanoparticles and the substrate. According to the characteristics of the filler and polyurethane, the process is simplified, the cost is low, and the technical foundation for large-scale production and practical application is laid.

[0025] (4) The novel ion liquid modified basalt nanosheet based photo-thermal super-hydrophobic coating material provided by the present application is used for high-voltage transmission lines, and effectively serves in different harsh working conditions. Compared with traditional super-hydrophobic coating materials, it has better photo-thermal properties, weather resistance and corrosion resistance. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The figure is a schematic diagram of the preparation process of the ion liquid modified basalt nanosheet based photo-thermal super-hydrophobic coating material of the present application. DETAILED DESCRIPTION

[0027] The present application will be further described in detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] 1. Dissolve 0.2g of 1-aminopropyl-3-methylimidazolium hexafluorophosphate in 20mL of deionized water and stir thoroughly until completely dissolved to obtain an ionic liquid dispersion; disperse 0.1g of basalt nanosheets in the ionic liquid dispersion and stir at 80℃ for 12 hours. After centrifugation, washing, and drying, obtain ionic liquid modified basalt nanosheet powder.

[0030] 2. Using ultrasonic technology, 4g of nano-SiO2 particles were uniformly dispersed in 40mL of butyl acetate at room temperature to obtain a butyl acetate solution; 0.1g of ionic liquid modified basalt nanosheet powder was added to the butyl acetate solution, along with 0.2g of dispersant HY-238, and then ultrasonically dispersed at room temperature for 15min to obtain a mixed slurry.

[0031] 3. Add 10g of polyurethane and 4g of PDMS to the mixed slurry, and stir at 1000rpm for 10min at room temperature.

[0032] 4. Add 2g of ethylene glycol film-forming aid, 1g of propylene glycol film-forming aid and 60mL of butyl acetate to the slurry obtained in step 3. Stir at 2000rpm for 5min at room temperature, and then degas at room temperature to obtain a photothermal superhydrophobic coating based on ionic liquid modified basalt nanosheet material.

[0033] This embodiment features a photothermal superhydrophobic coating with excellent performance.

[0034] Example 2

[0035] 1. Dissolve 0.2g of 1-aminopropyl-3-methylimidazolium hexafluorophosphate in 20mL of deionized water and stir thoroughly until completely dissolved to obtain an ionic liquid dispersion; disperse 0.4g of basalt nanosheets in the ionic liquid dispersion and stir at 80℃ for 12 hours. After centrifugation, washing, and drying, obtain ionic liquid modified basalt nanosheet powder.

[0036] 2. Using ultrasonic technology, 8g of nano-SiO2 particles were uniformly dispersed in 40mL of butyl acetate at room temperature to obtain a butyl acetate solution; 0.4g of ionic liquid modified basalt nanosheet powder was added to the butyl acetate solution, along with 0.4g of dispersant HY-238, and then ultrasonically dispersed at room temperature for 15min to obtain a mixed slurry.

[0037] 3. Add 15g of polyurethane and 4g of PDMS to the mixed slurry and stir at 1000rpm for 10min at room temperature.

[0038] 4. To the slurry obtained in step 3, 5 g of ethylene glycol film forming aid, 3 g of propylene glycol film forming aid and 70 mL of butyl acetate were added, stirred at a rate of 2000 rpm for 5 min at room temperature, and then a photo-thermal super-hydrophobic coating based on ion liquid modified basalt nanosheet material was obtained after degassing at room temperature.

[0039] Example 3

[0040] 1. 0.2 g of 1-amin-3-methylimidazole tetrafluoroborate salt was dissolved in 20 mL of deionized water, stirred well to completely dissolve to obtain an ionic liquid dispersion; 0.2 g of basalt nanosheet was dispersed in the ionic liquid dispersion, stirred and reacted at 80°C for 12 hours, washed by centrifugation and dried to obtain ionic liquid modified basalt nanosheet powder.

[0041] 2. Using ultrasonic technology, 8 g of nano-SiO2 particles were uniformly dispersed in 40 mL of butyl acetate at room temperature to obtain a butyl acetate solution; 0.2 g of ionic liquid modified basalt nanosheet powder was added to the butyl acetate solution, and 0.4 g of dispersant HY-238 was added, then ultrasonic dispersion was carried out for 15 min at room temperature to obtain a mixed slurry.

[0042] 3. 10 g of polyurethane and 2 g of PDMS were added to the mixed slurry, and stirred at a rate of 1000 rpm for 10 min at room temperature.

[0043] 4. To the slurry obtained in step 3, 2 g of ethylene glycol film forming aid, 2 g of propylene glycol film forming aid and 80 mL of butyl acetate were added, stirred at a rate of 2000 rpm for 5 min at room temperature, and then a photo-thermal super-hydrophobic coating based on ion liquid modified basalt nanosheet material was obtained after degassing at room temperature.

[0044] Example 4

[0045] 1. 0.4 g of 1-amin-3-methylimidazole tetrafluoroborate salt was dissolved in 20 mL of deionized water, stirred well to completely dissolve to obtain an ionic liquid dispersion; 0.2 g of basalt nanosheet was dispersed in the ionic liquid dispersion, stirred and reacted at 80°C for 12 hours, washed by centrifugation and dried to obtain ionic liquid modified basalt nanosheet powder.

[0046] 2. Using ultrasonic technology, 8 g of nano-SiO2 particles were uniformly dispersed in 40 mL of butyl acetate at room temperature to obtain a butyl acetate solution; 0.2 g of ionic liquid modified basalt nanosheet powder was added to the butyl acetate solution, and 0.4 g of dispersant HY-238 was added, then ultrasonic dispersion was carried out for 15 min at room temperature to obtain a mixed slurry.

[0047] 3. Add 5g polyurethane, 2g PDMS to the mixed slurry, stir at 1000rpm for 10min at room temperature.

[0048] 4. Add 2g ethylene glycol coalescing agent, 2g propylene glycol coalescing agent and 80mL butyl acetate to the slurry obtained in step 3, stir at 2000rpm for 5min at room temperature, then get the photo-thermal super-hydrophobic coating based on ionic liquid modified basalt nanosheet material after degassing at room temperature.

[0049] Example 5

[0050] 1. Dissolve 0.2g of 1-amin-3-methylimidazole tetrafluoroborate salt into 20mL deionized water, stir well to make it completely dissolved to obtain an ionic liquid dispersion; disperse 0.5g basalt nanosheet into the ionic liquid dispersion, stir and react at 80℃ for 12 hours, then obtain ionic liquid modified basalt nanosheet powder after centrifugal washing and drying.

[0051] 2. Use ultrasonic technology to uniformly disperse 8g nano-SiO2 particles in 40mL butyl acetate at room temperature to obtain a butyl acetate solution; add 0.2g ionic liquid modified basalt nanosheet powder to the butyl acetate solution, and add 0.4g dispersant HY-238, then ultrasonic dispersion for 15min at room temperature to obtain a mixed slurry.

[0052] 3. Add 10g polyurethane, 2g PDMS to the mixed slurry, stir at 1000rpm for 10min at room temperature.

[0053] 4. Add 2g ethylene glycol coalescing agent, 2g propylene glycol coalescing agent and 90mL butyl acetate to the slurry obtained in step 3, stir at 2000rpm for 5min at room temperature, then get the photo-thermal super-hydrophobic coating based on ionic liquid modified basalt nanosheet material after degassing at room temperature.

[0054] The above description is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A kind of ion liquid-based modified basalt nanomaterial photo-thermal super-hydrophobic coating, characterized by, The composition comprises the following components in percentage by mass: polyurethane 1-10%, film forming aid 1-10%, photo-thermal filler 0.1-0.5%, super-hydrophobic filler 1-10%, diluent 60-90%, dispersant 0.1-10%; The photo-thermal filler is ion liquid modified basalt nanosheet, the nanosheet has a size of 10-50 nm in thickness and 5-15 μm in length and width; The ion liquid is one of 1-aminopropyl-3-methyl imidazole hexafluorophosphate, 1-aminopropyl-3-methyl imidazole tetrafluoroborate and 1-aminopropyl-3-methyl imidazole bromide; The super-hydrophobic filler is nano-SiO2 and polydimethylsiloxane, the nano-SiO2 has a diameter of 10-30 nm; The steps of preparing the photo-thermal super-hydrophobic coating of ion liquid modified basalt nanomaterials include: dissolving the ion liquid in deionized water to prepare an ion liquid dispersion; The basalt nanosheet powder is added to the ion liquid dispersion, heated at a temperature of 60-100°C for 6-24 h, centrifuged, washed and dried to obtain the ion liquid modified basalt nanosheet powder. 2.The photo-thermal super-hydrophobic coating based on ion liquid modified basalt nanomaterials according to claim 1, characterized in that, The diluent is selected from one of cyclohexanone, butyl acetate and anhydrous xylene. 3.The photo-thermal super-hydrophobic coating based on ion liquid modified basalt nanomaterials according to claim 1, characterized in that, The dispersant is selected from one of HY-238, HY-257 and HY-2000. 4.The photo-thermal super-hydrophobic coating based on ion liquid modified basalt nanomaterials according to claim 1, characterized in that, The film forming aid is one of ethylene glycol, propylene glycol and hexylene glycol.

5. The preparation method of the ion liquid modified basalt nanomaterial-based photo-thermal super-hydrophobic coating according to any one of claims 1-4, characterized in that, The steps include: S1. Dissolving the ion liquid in deionized water to prepare an ion liquid dispersion, adding the basalt nanosheet powder to the ion liquid dispersion, heating at a temperature of 60-100°C for 6-24 h, centrifuging, washing and drying to obtain the ion liquid modified basalt nanosheet powder; S2. Dividing the diluent into two equal parts, uniformly dispersing the nano-SiO2 particles in one part of the diluent, adding the ion liquid modified basalt nanosheet powder to the diluent solution containing the nano-SiO2 particles, adding the dispersant, and then ultrasonic dispersing at a power of 500-1500 W for 10-15 min to obtain a mixed slurry; S3. Adding the polyurethane and polydimethylsiloxane to the mixed slurry and stirring uniformly to obtain a slurry; S4. Adding the film forming aid and the other part of the diluent to the slurry obtained in step S3, stirring and mixing, and then degassing at room temperature to obtain the photo-thermal super-hydrophobic coating of the ion liquid modified basalt nanosheet material.

6. The preparation method of the basalt nanomaterial photo-thermal super-hydrophobic coating based on ionic liquid modification according to claim 5, characterized in that, In step S1, the mass fraction of the ion liquid dispersion is 1 wt.%, and the mass fraction of the basalt nanosheet in the ion liquid dispersion is 2 wt.%.

7. The preparation method of the basalt nanomaterial photo-thermal super-hydrophobic coating based on ionic liquid modification according to claim 5, characterized in that, In step S2, the mass fraction of the nano-SiO2 particles in the photo-thermal super-hydrophobic coating of the ion liquid modified basalt nanosheet is 1-10 wt.%.

8. Use of the ion liquid modified basalt nanomaterials photo-thermal super-hydrophobic coating according to any one of claims 1-4, characterized in that, The photo-thermal super-hydrophobic coating of the ion liquid modified basalt nanosheet nanomaterial is sprayed and dried to obtain a photo-thermal super-hydrophobic coating based on the ion liquid modified basalt nanomaterial, which is used for high-voltage transmission lines.

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