Anti-icing insulating umbrella cover, preparation method thereof and complete anti-bird device

Abstract

The invention provides an anti-icing insulating umbrella cover and a preparation method thereof, and a complete anti-bird device, the anti-icing insulating umbrella cover comprises an insulating umbrella cover matrix formed by a thermoplastic polyurethane elastomer and a hydrophobic fabric; the hydrophobic fabric is prepared from the following components in parts by mass: 50 parts of polyurethane, 20 to 30 parts of fluorinated silicon dioxide organic sol and 10 to 20 parts of internal ammonium salt modified polyurethane. The internal ammonium salt modified polyurethane is utilized, and an internal ammonium salt group has zwitterionic property and can attract and neutralize electrostatic charges, so that an antistatic effect is achieved. When static electricity is generated on the surface of the material, the inner ammonium salt group can rapidly neutralize static charges and prevent static electricity accumulation and discharge, so that the anti-static performance is achieved, and the problems that in an existing insulating umbrella cover, the adsorption effect of the umbrella cover on dust is improved due to the electrostatic effect, and the contact angle of water and the umbrella cover is reduced due to dust adsorbed on the umbrella cover through static electricity are solved. And the anti-icing performance of the umbrella cover is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of hydrophobic polyurethane modified bird-proofing equipment, and in particular to an anti-icing insulating umbrella cover and a preparation method thereof, and a complete set of bird-proofing devices. Background Art

[0002] The existing polymer umbrella cover bird-proofing equipment has excellent insulation performance. Due to the good insulation performance of the umbrella cover, the static electricity generated by the air friction on the umbrella cover is not easy to release. The static electricity will increase the umbrella cover's adsorption effect on dust. The dust statically adsorbed on the umbrella cover will reduce the contact angle between water and the umbrella cover, thereby reducing the umbrella cover's anti-icing performance.

[0003] Patent application publication CN108727551A discloses a rigid polyurethane foam, which improves the antistatic performance of polyurethane by adding an antistatic agent alone. However, the problem is that over time, the antistatic agent falls off, causing the antistatic performance to decrease. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the electrostatic effect of the existing insulating umbrella cover will increase the umbrella cover's adsorption effect on dust, and the dust electrostatically adsorbed on the umbrella cover will reduce the contact angle between water and the umbrella cover, thereby reducing the anti-icing performance of the umbrella cover.

[0005] In order to solve the above technical problems, the present invention first provides an anti-icing insulating umbrella cover, comprising an insulating umbrella cover base formed of thermoplastic polyurethane elastomer and a hydrophobic fabric;

[0006] The hydrophobic fabric comprises, by weight: 50 parts of polyurethane, 20 to 30 parts of fluorinated silicon dioxide organic sol, and 10 to 20 parts of polyurethane modified by ammonium salt.

[0007] The invention utilizes polyurethane modified by betaine salt, and the betaine salt group has zwitterionicity, can attract and neutralize static charge, and thus plays an antistatic role. When static electricity is generated on the surface of the insulating umbrella cover, the betaine salt group can quickly neutralize the static charge, prevent the accumulation and discharge of static electricity, and thus play an antistatic role, solving the problem that in the existing insulating umbrella cover, the static electricity effect improves the adsorption effect of the umbrella cover on dust, causing the dust adsorbed on the umbrella cover by static electricity to reduce the contact angle between water and the umbrella cover, resulting in the decline of the anti-icing performance of the umbrella cover.

[0008] In order to improve the hydrophobicity of the insulating umbrella cover, according to the anti-icing insulating umbrella cover of the present invention, the fluoride in the fluorinated silicon dioxide organosol is fluorine-containing silane.

[0009] In order to improve the fluorination effect of silicon dioxide and improve the compatibility of fluorinated silicon dioxide with polyurethane, according to the anti-icing insulating umbrella cover of the present invention, the method for obtaining the fluorinated silicon dioxide organosol is:

[0010] The silica with a particle size of no more than 100 nm and the DMAC solvent are fully mixed and dispersed according to mass parts to obtain a silica dispersion; fluorinated silane is added to the silica dispersion, heated to 60° C., and fully stirred to obtain a fluorinated silica organosol; the mass ratio of silica to fluorinated silane is 1:0.2-0.3, and the solid content of the fluorinated silica organosol is not less than 65%.

[0011] Different from the conventional method of directly adding solid silica, the present invention adopts the method of fluorinated silica organosol, which is more conducive to dissolving fluorinated silica into polyurethane.

[0012] According to the anti-icing insulating umbrella cover of the present invention, the thickness of the hydrophobic fabric is not less than 0.5 mm.

[0013] In order to improve the antistatic performance and antistatic durability of polyurethane, according to the anti-icing insulating umbrella cover of the present invention, the carbamate in the polyurethane modified by the betaine salt is linked by dihydroxyethyl betaine salt.

[0014] In the above technical solution of the present invention, dihydroxyethyl betaine salt is grafted on polyurethane to form a copolymer, thereby achieving chemical bonding on polyurethane, so that polyurethane has a lasting antistatic property. Compared with the temporary antistatic treatment method, it is not easily affected by factors such as wind friction and rain erosion, and can maintain the antistatic effect for a long time.

[0015] Optionally, according to the anti-icing insulating umbrella cover of the present invention, the dihydroxyethyl betaine is at least one of tallow dihydroxyethyl betaine, dodecyl dihydroxyethyl betaine, tetradecyl dihydroxyethyl betaine, and octadecyl dihydroxyethyl betaine.

[0016] Based on the above inventive concept, the present invention also provides a method for preparing an anti-icing insulating umbrella cover, comprising:

[0017] Preparation of an insulating umbrella cover substrate and a hydrophobic fabric, and covering the hydrophobic fabric on the insulating umbrella cover substrate;

[0018] The preparation of the hydrophobic fabric comprises:

[0019] The preparation of the hydrophobic fabric comprises:

[0020] Fully dissolving 50 parts of polyurethane in an organic solvent to obtain a polyurethane stock solution;

[0021] Adding 20 to 30 parts of fluorinated silicon dioxide organosol to the polyurethane stock solution to obtain a hydrophobic polyurethane stock solution;

[0022] Adding a betaine-modified polyurethane stock solution into the hydrophobic polyurethane stock solution obtains an antistatic hydrophobic polyurethane stock solution, wherein the content of the betaine-modified polyurethane in the betaine-modified polyurethane stock solution is 10 parts to 20 parts.

[0023] According to the above preparation method of the present invention, the organic solvent is any one of DMAC, DMSO and DMF.

[0024] In order to embed the dihydroxyethyl betaine salt into the polyurethane molecular chain, according to the above preparation method of the present invention, the preparation method of the betaine salt-modified polyurethane is:

[0025] In an anhydrous environment, diisocyanate and polyether polyol are mixed in a molar ratio of 2:1 and then prepolymerized to obtain a prepolymer;

[0026] The prepolymer is added into an organic solvent and stirred thoroughly, and dihydroxyethyl betaine is added to extend the chain to obtain a betaine-modified polyurethane solution;

[0027] A functional additive is added to the polyurethane solution to obtain a polyurethane stock solution.

[0028] Based on the above inventive concept, the present invention also provides a bird-proofing device including the above-mentioned anti-icing insulating umbrella cover, comprising:

[0029] An insulator string, and an anti-icing insulating umbrella cover arranged on the rod body of the insulator string.

[0030] According to the bird-proofing device of the present invention, at least one of the anti-icing insulating umbrella covers is sleeved on the insulator string rod body.

[0031] The technical effects of this application are:

[0032] 1. The present invention utilizes polyurethane modified by betaine, and the betaine group has zwitterionicity, can attract and neutralize static charge, thereby playing an antistatic effect. When static electricity is generated on the surface of the insulating umbrella cover, the betaine group can quickly neutralize the static charge, prevent the accumulation and discharge of static electricity, thereby playing an antistatic performance, and solves the problem that in the existing insulating umbrella cover, the static action improves the adsorption of dust by the umbrella cover, causes the dust on the umbrella cover to reduce the contact angle of water with the umbrella cover, and causes the anti-icing performance of the umbrella cover to decrease.

[0033] 2. The present invention grafts dihydroxyethyl betaine salt onto polyurethane to form a copolymer, thereby achieving chemical bonding to polyurethane and having lasting antistatic properties. Compared with temporary antistatic treatment methods, the present invention is not easily affected by factors such as wind friction and rain erosion, and can maintain the antistatic effect for a long time.

[0034] 3. The fabric of the anti-icing insulating umbrella cover of the present invention contains ordinary polyurethane and ammonium salt-modified polyurethane, which not only ensures the antistatic property of the anti-icing insulating umbrella cover fabric, but also ensures the mechanical property of the umbrella cover fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of an anti-icing insulating umbrella cover used in a complete set of bird-proofing equipment in an embodiment of the present invention.

[0036] Figure 2 It is a schematic diagram of an anti-icing insulating umbrella cover used in a complete set of bird-proofing equipment in another embodiment of the present invention.

[0037] Figure 3 It is a schematic diagram of an anti-icing insulating umbrella cover used in a complete set of bird-proofing equipment in another embodiment of the present invention.

[0038] Figure 4 It is a schematic diagram of the anti-icing insulating umbrella cover of the present invention being installed on an insulator string.

[0039] Figure 5 It is a structural schematic diagram of an anti-icing insulating umbrella cover in an embodiment of the present invention.

[0040] Description of reference numerals:

[0041] 1. Insulator string; 2. Anti-icing insulating umbrella cover; 21. Insulating umbrella cover base; 22. Hydrophobic fabric; 100. Transmission line. DETAILED DESCRIPTION

[0042] The following is a detailed description of the embodiments of the technical solution of the present application. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0043] Example 1 Preparation of Betaine-modified Polyurethane

[0044] In an anhydrous environment, diisocyanate and polyether polyol are mixed in a molar ratio of 2:1 and then prepolymerized to obtain a prepolymer;

[0045] The prepolymer is added into an organic solvent and stirred thoroughly, and dihydroxyethyl betaine is added to extend the chain to obtain a betaine-modified polyurethane solution;

[0046] A functional additive is added to the polyurethane solution to obtain a polyurethane stock solution.

[0047] The organic solvent can be selected from DMAC, NMP, DMSO, DMF, etc.;

[0048] In the following specific examples, the dihydroxyethyl betaine is selected as tallow dihydroxyethyl betaine.

[0049] The polymerization reaction principle is:

[0050]

[0051] Example 1-1

[0052] Under the protection of dry nitrogen, 50 parts by mass of phenylmethane-4,4'-diisocyanate (4,4'-MDI) and 180 parts of polytetramethylene glycol (PTMEG) with a molecular weight of 1800 are fully reacted in a vacuum reactor at 85-90° C. to obtain 230 parts of a prepolymer;

[0053] 100 parts of DMAC solvent were added to the above 230 parts of prepolymer, and 3.0 parts of 1,4-butanediol were added, and after being fully mixed, a chain extension reaction was carried out to obtain 333 parts of polymer;

[0054] 1.5 parts of an anti-aging agent, 1.5 parts of an ultraviolet absorber, and 8.9 parts of tallow dihydroxyethyl betaine were added to the above polymer, and after thorough mixing, 336 parts of a betaine-modified polyurethane stock solution having a solid content of 71.0% were obtained.

[0055] Example 1-2

[0056] The difference between Example 1-2 and Example 1-1 is that dihydroxyethyl betaine salt is used as a chain extender to carry out a chain extension reaction, which is as follows:

[0057] Under the protection of dry nitrogen, 50 parts by mass of phenylmethane-4,4'-diisocyanate (4,4'-MDI) and 180 parts of polytetramethylene glycol (PTMEG) with a molecular weight of 1800 are fully reacted in a vacuum reactor at 85-90° C. to obtain 230 parts of a prepolymer;

[0058] 100 parts of DMAC solvent and 8.9 parts of tallow dihydroxyethyl betaine were added to the above 230 parts of prepolymer, and the mixture was fully mixed and then chain extended to obtain 338.9 parts of polymer.

[0059] 1.5 parts of an anti-aging agent and 1.5 parts of an ultraviolet absorber were added to the above polymer and mixed thoroughly to obtain 341.9 parts of a polyurethane stock solution modified with a betaine salt having a solid content of 70.8%.

[0060] Examples 1-3

[0061] The difference between Example 1-3 and Example 1-1 is that 8.9 parts of 1,4-butanediol are used as a chain extender to carry out the chain extension reaction.

[0062] Under the protection of dry nitrogen, 50 parts by mass of phenylmethane-4,4'-diisocyanate (4,4'-MDI) and 180 parts of polytetramethylene glycol (PTMEG) with a molecular weight of 1800 are fully reacted in a vacuum reactor at 85-90° C. to obtain 230 parts of a prepolymer;

[0063] 100 parts of DMAC solvent and 8.9 parts of 1,4-butanediol were added to the above 230 parts of prepolymer, and the mixture was fully mixed and then chain extension reaction was performed to obtain 338.9 parts of polymer.

[0064] 1.5 parts of an anti-aging agent, 1.5 parts of an ultraviolet absorber, and 8.9 parts of tallow dihydroxyethyl betaine were added to the above polymer, and after thorough mixing, 341.9 parts of a betaine-modified polyurethane stock solution with a solid content of 71.5% was obtained.

[0065] Comparative Example 1-1

[0066] The difference between Comparative Example 1-1 and Example 1-2 is that the chain extender is 1,4-butanediol, and no dihydroxyethyl betaine salt is added, specifically:

[0067] Under the protection of dry nitrogen, 50 parts by mass of phenylmethane-4,4'-diisocyanate (4,4'-MDI) and 180 parts of polytetramethylene glycol (PTMEG) with a molecular weight of 1800 are fully reacted in a vacuum reactor at 85-90° C. to obtain 230 parts of a prepolymer;

[0068] 100 parts of DMAC solvent and 8.9 parts of 1,4-butanediol were added to the above 230 parts of prepolymer, and the mixture was fully mixed and then chain extension reaction was performed to obtain 338.9 parts of polymer.

[0069] 1.5 parts of an anti-aging agent and 1.5 parts of an ultraviolet absorber were added to the above polymer and mixed thoroughly to obtain 341.9 parts of a polyurethane stock solution with a solid content of 70.8%.

[0070] The control conditions of the above-mentioned Examples 1-1 to 1-3 and Comparative Example 1-1 are detailed in Table 1.

[0071] Table 1 Control conditions of Examples 1-1 to 1-3 and Comparative Example 1-1

[0072]

[0073] Example 2 Preparation of fluorinated silicon dioxide organosol.

[0074] Fully mixing and dispersing silica having a particle size of no more than 100 nm and DMAC solvent according to parts by mass to obtain a silica dispersion;

[0075] Add fluorinated silane to the silica dispersion, heat to 60°C, and stir thoroughly to obtain a fluorinated silica organosol;

[0076] The mass ratio of silicon dioxide to fluorine-containing silane is 1:0.2-0.3, and the solid content of the fluorinated silicon dioxide organic sol is not less than 65%.

[0077] Example 2-1

[0078] 20 parts by mass of silicon dioxide having a particle size of no more than 100 nm and 12 parts by mass of DMAC solvent were fully mixed and then ultrasonically dispersed for 30 minutes to obtain a silicon dioxide dispersion;

[0079] 4 parts of perfluorodecyltrimethoxysilane were added to the silica dispersion, heated to 60° C., and stirred for 5 hours to obtain a fluorinated silica organosol with a solid content of about 66.7%.

[0080] Example 2-2

[0081] 20 parts by mass of silicon dioxide having a particle size of no more than 100 nm and 12 parts by mass of DMAC solvent were fully mixed and then ultrasonically dispersed for 30 minutes to obtain a silicon dioxide dispersion;

[0082] 5 parts of perfluorodecyltrimethoxysilane were added to the silica dispersion, heated to 60° C., and stirred for 5 hours to obtain a fluorinated silica organosol with a solid content of about 67.6%.

[0083] Example 2-3

[0084] 20 parts by mass of silicon dioxide having a particle size of no more than 100 nm and 12 parts by mass of DMAC solvent were fully mixed and then ultrasonically dispersed for 30 minutes to obtain a silicon dioxide dispersion;

[0085] 6 parts of perfluorodecyltrimethoxysilane were added to the silica dispersion, heated to 60° C., and stirred for 5 hours to obtain a fluorinated silica organosol with a solid content of about 68.4%.

[0086] Embodiment 2-4

[0087] 20 parts by mass of silicon dioxide having a particle size of no more than 100 nm and 12 parts by mass of DMAC solvent were fully mixed and then ultrasonically dispersed for 30 minutes to obtain a silicon dioxide dispersion;

[0088] 5 parts of tridecafluorooctyltrimethoxysilane were added to the silica dispersion, heated to 60° C., and stirred for 5 hours to obtain a fluorinated silica organosol with a solid content of about 68.4%.

[0089] Comparative Example 2-1

[0090] 20 parts by mass of silicon dioxide having a particle size of not more than 100 nm and 12 parts by mass of DMAC solvent were fully mixed and then ultrasonically dispersed for 30 minutes to obtain a silicon dioxide dispersion.

[0091] Comparative Example 2-2

[0092] 20 parts by mass of silicon dioxide having a particle size of not more than 100 nm and 5 parts by mass of perfluorodecyltrimethoxysilane were fully mixed and then ultrasonically dispersed for 30 minutes to obtain a perfluorodecyltrimethoxysilane-silicon dioxide mixture.

[0093] The control conditions of the above-mentioned Examples 2-1 to 2-4 and Comparative Examples 2-1 to 2-2 are detailed in Table 2.

[0094] Table 2 Control conditions of Examples 2-1 to 2-4 and Comparative Examples 2-1 to 2-2

[0095]

[0096]

[0097] Example 3 Preparation of anti-icing insulating umbrella cover

[0098] In the following embodiments, the preparation method of the insulating umbrella cover substrate 21 is as follows:

[0099] Weigh 38 parts of methyl vinyl silicone rubber, 18 parts of styrene-butadiene rubber, 20 parts of polypropylene and 10 parts of dimethyl silicone oil, stir and react at 130°C for 2 hours; then add 10 parts of diphenylethylene and 2.5 parts of azobisisobutyronitrile, stir and react at 142°C for 3 hours; then add 1 part of triallyl isocyanurate and 0.6 parts of diisopropylbenzene peroxide, stir and react at 160°C for 1 hour to obtain modified methyl vinyl silicone rubber, and the viscosity flow temperature of the modified rubber is 155-175°C.

[0100] Weigh 100 parts of polyurethane powder, 100 parts of modified methyl vinyl silicone rubber, 12 parts of maleic anhydride grafted polypropylene compatibilizer with a grafting rate of 1.2%, 15 parts of basalt fiber treated with a silane coupling agent, 25 parts of nano calcium carbonate treated with a silane coupling agent, 10 parts of antimony oxide flame retardant treated with a silane coupling agent, 1 part of ultraviolet absorber phenyl o-hydroxybenzoate, 1.2 parts of antioxidant zinc dialkyl dithiocarbamate, 1.2 parts of vulcanizing agent diisopropyl peroxide, and 3 parts of masterbatch, add the mixture into a kneader and mix for 50 minutes to obtain a rubber composite matrix, control the temperature not to exceed 170°C, and the viscosity flow temperature of the obtained rubber composite matrix is ​​162-201°C.

[0101] The polymer composite material is extruded through a circular die and cut into a molded blank according to production needs. The molded blank is placed in a mold for molding at a molding pressure of 4MPa, a molding temperature of 190°C, and a holding time of 20min. After demolding, the insulating umbrella cover substrate 21 is obtained by natural cooling.

[0102] In an embodiment of the present invention, the preparation of the hydrophobic fabric 22 includes:

[0103] Fully dissolving 50 parts of polyurethane in an organic solvent to obtain a polyurethane stock solution;

[0104] Adding 20 to 30 parts of fluorinated silicon dioxide organosol to the polyurethane stock solution to obtain a hydrophobic polyurethane stock solution;

[0105] Adding a betaine-modified polyurethane stock solution into the hydrophobic polyurethane stock solution obtains an antistatic hydrophobic polyurethane stock solution, wherein the content of the betaine-modified polyurethane in the betaine-modified polyurethane stock solution is 10 parts to 20 parts.

[0106] like Figure 5 , covering the insulating umbrella cover substrate 21 with an antistatic hydrophobic polyurethane stock solution, and forming a hydrophobic fabric 22 after the antistatic hydrophobic polyurethane stock solution is dried;

[0107] Finally, an anti-icing insulating umbrella cover 2 is obtained.

[0108] In the following specific embodiments, the thickness of the hydrophobic fabric is 0.5 mm.

[0109] Example 3-1

[0110] Preparation of an insulating umbrella cover substrate and a hydrophobic fabric, and covering the hydrophobic fabric on the insulating umbrella cover substrate to obtain an anti-icing insulating umbrella cover after drying;

[0111] The preparation of the hydrophobic fabric comprises:

[0112] Fully dissolving 50 parts of polyurethane in 100 parts of organic solvent to obtain a polyurethane stock solution;

[0113] Add 30 parts of fluorinated silicon dioxide obtained in Example 2-1 to the polyurethane stock solution to obtain a hydrophobic polyurethane stock solution, wherein the content of fluorinated silicon dioxide in the hydrophobic polyurethane stock solution is 20 parts;

[0114] Add 28 parts of the betaine-modified polyurethane stock solution obtained in Example 1-1 to the hydrophobic polyurethane stock solution to obtain an antistatic hydrophobic polyurethane stock solution, wherein the content of the betaine-modified polyurethane is 20 parts;

[0115] The antistatic hydrophobic polyurethane stock solution is covered on the insulating umbrella cover substrate, and the antistatic hydrophobic polyurethane stock solution is dried to form a hydrophobic fabric;

[0116] Finally, an anti-icing insulating umbrella cover is obtained.

[0117] Example 3-2 to Example 3-8

[0118] The difference between Example 3-2 to Example 3-8 and Example 3-1 is that the preparation raw materials and the number of raw materials are different from those of Example 3-1. The specific control conditions of each example are detailed in Table 3.

[0119] Comparative Example 3-1 to Comparative Example 3-4

[0120] The difference between Example 3-2 to Example 3-8 and Example 3-1 is that the preparation raw materials and the number of raw materials are different from those of Example 3-1. The specific control conditions of each example are detailed in Table 3.

[0121] Table 3 Control conditions of Examples 3-1 to 3-8 and Comparative Examples 3-1 to 3-4

[0122]

[0123]

[0124] The anti-icing insulating umbrella covers obtained in Example 3-1 to Comparative Example 3-4 were tested for hydrophobicity, antistatic performance, and mechanical properties.

[0125] The mechanical properties test was carried out according to the reference standard GB / T 19250-2023 for tensile strength test, and the test value was the average value of 10 tests and recorded in Table 4.

[0126] The waterproof performance test adopts the sessile drop method to test the surface water contact angle of the anti-icing insulating umbrella cover, with a water drop of 2μL and a test time of 10s. The test value is the average value of 10 tests and is recorded in Table 4.

[0127] The antistatic performance test before and after aging was performed using a micro-current measuring instrument for volume resistivity test, and the test value was the average value of 10 tests and recorded in Table 4. The aging method was to place the anti-icing insulating umbrella in a constant temperature and humidity chamber at 65°C and 75% humidity for 3 months.

[0128] Table 4 Test results of the anti-icing insulating umbrella cover performance obtained from Example 3-1 to Comparative Example 3-4

[0129]

[0130] Through Examples 3-1 to 3-8, it can be seen that the anti-icing insulating umbrella cover obtained by the anti-icing insulating umbrella cover preparation method provided by the present invention has excellent hydrophobicity, mechanical properties and antistatic properties.

[0131] Among them, the anti-icing insulating umbrella covers obtained in Examples 3-4, 3-5 to 3-8 have the best antistatic performance, and the antistatic performance is not affected after aging, because the dihydroxyethyl betaine salt is grafted on the polyurethane to form a copolymer, thereby achieving chemical bonding on the polyurethane, and having a lasting antistatic performance. Compared with the temporary antistatic treatment method, it is not easily affected by factors such as wind friction and rain erosion, and can maintain the antistatic effect for a long time.

[0132] By comparing Comparative Example 3-1 with Example 3-4, the product obtained in Comparative Example 3-1 has poor hydrophobicity. This is because Comparative Example 3-1 uses the silicon dioxide obtained in Comparative Example 2-1 without fluorination treatment, resulting in poor hydrophobicity of the product.

[0133] By comparing Comparative Example 3-2 with Example 3-4, although the hydrophobicity of the product obtained in Comparative Example 3-2 is better than that in Comparative Example 3-1, the hydrophobic performance is still poor. This is because Comparative Example 3-2 uses the silica obtained in Comparative Example 2-2, and adopts a simple mixing of perfluorodecyltrimethoxysilane-silicon dioxide, resulting in insufficient mixing of perfluorodecyltrimethoxysilane-silicon dioxide, which ultimately leads to poor hydrophobic performance of the product.

[0134] By comparing Comparative Example 3-3 with Example 3-4, the product obtained in Comparative Example 3-3 has poor antistatic performance and poor hydrophobic performance. This is because Comparative Example 3-3 uses the silica obtained in Comparative Example 2-1 without fluorination treatment, resulting in poor hydrophobic performance of the product, and uses the polyurethane stock solution obtained in Comparative Example 1-1 without antistatic modification, resulting in poor antistatic performance of the product.

[0135] By comparing Comparative Example 3-4 with Example 3-4, the product obtained in Comparative Example 3-4 has poor antistatic performance and poor hydrophobic performance. This is because Comparative Example 3-4 uses the silica obtained in Comparative Example 2-2, and simply mixes perfluorodecyltrimethoxysilane-silicon dioxide, resulting in insufficient mixing of perfluorodecyltrimethoxysilane-silicon dioxide, which ultimately leads to poor hydrophobic performance of the product. In addition, the polyurethane stock solution obtained in Comparative Example 1-1 without antistatic modification is used, resulting in poor antistatic performance of the product.

[0136] like Figure 1 to Figure 4 In some embodiments of the present invention, the anti-icing insulating umbrella cover obtained in Embodiments 3-4 is used in a bird-proofing complete set, including:

[0137] An insulator string 1, and an anti-icing insulating umbrella cover 2 arranged on the rod body of the insulator string 1. At least one of the anti-icing insulating umbrella covers 2 is sleeved on the rod body of the insulator string 1.

[0138] like Figure 1The embodiment of arranging an anti-icing insulating umbrella cover 2 on the top of an insulator string 1 is shown, and the bottom of the insulator string 1 is connected to a transmission line 100. The insulator string 1 can be installed on a transmission line tower by means of hardware.

[0139] like Figure 2 The embodiment of arranging anti-icing insulating umbrella covers 2 at the top and bottom of the insulator string 1 is illustrated. In the figure, the bottom of the insulator string 1 is connected to the transmission line 100. The insulator string 1 can be installed on the transmission line tower by hardware.

[0140] like Figure 3 The embodiment of arranging an anti-icing insulating umbrella cover 2 at the bottom of an insulator string 1 is shown. In the figure, the bottom of the insulator string 1 is connected to a transmission line 100. The insulator string 1 can be installed on a transmission line tower by means of hardware.

[0141] Table 5 shows the specifications and applicable voltage levels of different bird-proofing equipment in this application.

[0142] Table 5 Specifications of different bird-proofing sets

[0143]

[0144] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An anti-icing insulating umbrella cover, characterized in that: The utility model comprises an insulating umbrella cover base body and a hydrophobic fabric formed of thermoplastic polyurethane elastomer; The hydrophobic fabric comprises, by weight: 50 parts of polyurethane, 20 to 30 parts of fluorinated silicon dioxide organic sol, and 10 to 20 parts of polyurethane modified by ammonium salt.

2. The anti-icing insulating umbrella cover according to claim 1, characterized in that: The fluoride in the fluorinated silica organosol is fluorine-containing silane.

3. The anti-icing insulating umbrella cover according to claim 2, characterized in that: The method for obtaining the fluorinated silicon dioxide organosol is: Fully mixing and dispersing silica having a particle size of no more than 100 nm and DMAC solvent according to parts by mass to obtain a silica dispersion; Add fluorinated silane to the silica dispersion, heat to 60°C, and stir thoroughly to obtain a fluorinated silica organosol; The mass ratio of silicon dioxide to fluorine-containing silane is 1:0.2-0.3, and the solid content of the fluorinated silicon dioxide organic sol is not less than 65%.

4. The anti-icing insulating umbrella cover according to claim 1, characterized in that: The thickness of the hydrophobic fabric is not less than 0.5 mm.

5. The anti-icing insulating umbrella cover according to claim 1, characterized in that: In the betaine-modified polyurethane, urethane is linked via dihydroxyethyl betaine.

6. A method for preparing an anti-icing insulating umbrella cover, characterized in that: include: Preparation of an insulating umbrella cover substrate and a hydrophobic fabric, and covering the hydrophobic fabric on the insulating umbrella cover substrate; The preparation of the hydrophobic fabric comprises: Fully dissolving 50 parts of polyurethane in an organic solvent to obtain a polyurethane stock solution; Adding 20 to 30 parts of fluorinated silicon dioxide organosol to the polyurethane stock solution to obtain a hydrophobic polyurethane stock solution; Adding a betaine-modified polyurethane stock solution into the hydrophobic polyurethane stock solution obtains an antistatic hydrophobic polyurethane stock solution, wherein the content of the betaine-modified polyurethane in the betaine-modified polyurethane stock solution is 10 parts to 20 parts.

7. The anti-icing insulating umbrella cover according to claim 1, characterized in that: The organic solvent is any one of DMAC, DMSO and DMF.

8. The method for preparing the anti-icing insulating umbrella cover according to claim 6, characterized in that: The preparation method of the betaine-modified polyurethane is: In an anhydrous environment, diisocyanate and polyether polyol are mixed in a molar ratio of 2:1 and then prepolymerized to obtain a prepolymer; The prepolymer is added into an organic solvent and stirred thoroughly, and dihydroxyethyl betaine is added to extend the chain to obtain a betaine-modified polyurethane solution; A functional additive is added to the polyurethane solution to obtain a polyurethane stock solution.

9. A bird-proofing device comprising the anti-icing insulating umbrella cover according to any one of claims 1 to 5, characterized in that: include: An insulator string (1), and an anti-icing insulating umbrella cover (2) arranged on a rod body of the insulator string (1).

10. The bird-proofing device according to claim 9, characterized in that: At least one of the anti-icing insulating umbrella covers (2) is sleeved on the rod body of the insulator string (1).

Images