Anti-icing wire and preparation method thereof

Abstract

The application discloses an anti-icing conductor wire and a preparation method thereof, and belongs to the technical field of functional coating materials. The anti-icing conductor wire comprises a conductor wire and an anti-icing coating layer compounded on the surface of the conductor wire; the anti-icing coating layer comprises a crosslinking product and silicone oil; the crosslinking product is obtained by crosslinking and curing of vinyl siloxane and siloxane containing a silicon-hydrogen bond under a platinum catalyst. The anti-icing conductor wire has excellent anti-icing effect and can supplement the silicone oil to prolong the anti-icing period; the anti-icing conductor wire can be directly prepared and then put into actual line use, or the anti-icing layer can be compounded on an existing power transmission conductor wire line to obtain the anti-icing conductor wire.

Description

Technical Field

[0001] This invention relates to the field of functional coating materials technology, and in particular to an anti-icing wire and its preparation method. Background Technology

[0002] Icing on power transmission lines is a physical phenomenon caused by supercooled water droplets or supercooled fog in the atmosphere impacting the surface of low-temperature conductors and accumulating due to phase change. This freezing rain condensation process poses a serious threat to the safe and stable operation of power systems. Therefore, developing efficient and reliable conductor anti-icing technologies is of great engineering significance. Current technical approaches can be mainly divided into two categories: active de-icing and passive protection. The first category, active de-icing technologies, such as AC short-circuit de-icing and mechanical vibration, rely on external energy input or mechanical intervention. Although the de-icing effect is direct, they have inherent drawbacks such as high energy consumption, complex operation, and limited applicability. On the other hand, passive anti-icing coating technology aims to intervene in the icing process by controlling the surface properties of materials. Due to its potential for immediate, long-lasting, energy-saving, and easy implementation, it has become a research frontier in the fields of surface engineering and functional materials.

[0003] Currently, passive anti-icing coatings based on biomimetic principles mainly revolve around two core surface design paradigms: one is superhydrophobic coatings (Barthlott, W.; Neinhuis, C. Purity of the Sacred Lotus, or Escape from Contamination in Biological Surfaces. Planta 1997, 202 (1), 1–8.), whose mechanism originates from the "lotus effect." By constructing a micron-nano graded rough structure on the surface, a high contact angle and low roll-off angle of water droplets on the rough surface are achieved, thereby delaying the formation and growth of ice nuclei. However, in low-temperature and high-humidity environments where freezing rain is prone to occur, this coating is easily affected by surface condensation, leading to the wetting of micro-nano structures by water droplets and causing "hydrophobic failure." Furthermore, the anchoring effect of ice crystals in the micro-nano structure may cause the ice adhesion strength to increase rather than decrease, and its mechanical fragility also poses a durability challenge under long-term outdoor aging and freeze-thaw cycles. The second type is the lubricant-injected surface (SLIPS) (Wong, T.-S.; Kang, SH; Tang, SKY; Smythe, EJ; Hatton, BD; Grinthal, A.; Aizenberg, J. Bioinspired Self-Repairing Slippery Surfaces with Pressure-Stable Omniphobicity. Nature 2011, 477 (7365), 443–447.), inspired by the pitcher plant. It forms a smooth, molecularly flat liquid film on a solid surface by locking the lubricant in a porous matrix. This liquid interface significantly reduces the adhesion strength of ice crystals, achieving extremely low ice adhesion, and exhibits good tolerance in low-temperature and high-humidity environments. However, its technological bottleneck lies in the continuous loss of lubricant due to evaporation, migration, or being stripped by ice. Once the lubricant is depleted, the surface function fails. Therefore, its long-term performance depends on developing new lubricant replenishment mechanisms and durable, high-volume lubricant encapsulation technologies.

[0004] In the field of superhydrophobic surfaces, patent CN 102290147 A uses a chemical etching followed by chemical modification method to prepare superhydrophobic anti-icing aluminum stranded wire. However, the micro-nano rough structure of the superhydrophobic surface is difficult to withstand the physical wear of stranding and installation. In low-temperature and high-humidity environments, the anti-icing performance of the superhydrophobic aluminum stranded wire fails. At the same time, chemical etching will damage the aluminum stranded wire and cause changes in its physicochemical properties. Patent CN 121203537A uses polydimethylsiloxane (PDMS) as a base and introduces a modified fluorinated phosphotungstic acid imidazole compound and a silver ion complex to inhibit ice formation and promote ice melting. However, it still falls under the category of superhydrophobic surfaces, and its long-term performance in low-temperature and high-humidity environments is also difficult to guarantee. Regarding lubricant-injected surfaces (SLIPs), patent CN 104217785 A uses an etching method followed by liquid re-injection to prepare anti-icing aluminum stranded wire. However, the etched aluminum surface has a rough and irregular structure, making it easy for the liquid to detach from the aluminum stranded wire, resulting in poor durability. Furthermore, chemical etching damages the aluminum stranded wire, altering its physicochemical properties. Patent CN 110504062 A uses anodizing combined with surface modification and then injecting lubricating liquid to prepare anti-icing aluminum stranded wire. However, this conductor pretreatment method is cumbersome and costly, cannot be used to modify existing transmission lines, and the structure has weak lubricant retention, compromising long-term performance.

[0005] Therefore, there is an urgent need to research and develop a new type of anti-icing coating to solve the problems of high raw material costs, complex processing technology, poor long-term anti-icing performance, and lack of lubricant replenishment. Summary of the Invention

[0006] In view of this, the technical problem to be solved by the present invention is to provide an anti-icing conductor and a method for preparing the same. The anti-icing conductor has excellent anti-icing effect and can be supplemented with lubricant to extend the anti-icing cycle.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] This invention provides an anti-icing conductor, comprising a conductor and an anti-icing coating compounded thereon;

[0009] The anti-icing coating comprises crosslinking products and silicone oil;

[0010] The crosslinking product is obtained by crosslinking and curing vinylsiloxane and siloxane containing silane hydrogen bonds under a platinum catalyst;

[0011] The conductor in the anti-icing conductor of this invention can be any conductor, including but not limited to power transmission conductors currently in use outdoors or ordinary conductors not in use.

[0012] Preferably, the anti-icing coating of the present invention comprises a crosslinking product layer and a silicone oil layer;

[0013] Preferably, the crosslinked product layer is in contact with the wire, and the silicone oil layer is in contact with the crosslinked product layer;

[0014] Preferably, the crosslinking product layer is formed from the crosslinking product, and the silicone oil layer is formed from silicone oil.

[0015] Preferably, the anti-icing coating of the present invention comprises a crosslinking product and silicone oil entangled with its crosslinking network.

[0016] The silicone oil (as a lubricant) described in this invention has a similar skeletal structure to the crosslinking network of the crosslinking product. Therefore, the silicone oil and the crosslinking product have good compatibility, which makes the crosslinking network of the silicone oil and the crosslinking product have strong interaction forces. This ensures the swelling amount of silicone oil in the crosslinking network and minimizes the loss of silicone oil during the anti-icing and de-icing process, thus maintaining the anti-icing capability for a long time.

[0017] The anti-icing coating of this invention utilizes vinyl siloxanes of different chain lengths to crosslink with siloxanes containing different proportions of end-group or side-chain silane-hydrogen bonds through hydrosilylation to form a polyorganosiloxane chain network. Preferably, the molar ratio of the vinyl bonds in the vinyl siloxane to the silane-hydrogen bonds in the siloxane containing silane-hydrogen bonds is 1:1, and this ratio can be appropriately adjusted to change the crosslinking density of the polyorganosiloxane chain network.

[0018] When an external force is applied to the surface ice layer of the anti-icing coating, the anti-icing coating undergoes partial deformation under pressure, and the potential energy between the long branches in the coating increases, generating an additional rebound driving force, making it easier for the surface ice layer to detach from the anti-icing coating.

[0019] The anti-icing coating of this invention significantly improves the de-icing effect while maintaining certain mechanical properties. Preferably, the cross-linking curing temperature is 20℃-130℃.

[0020] Preferably, the thickness of the anti-icing coating is 5-1000 μm; more preferably, it is 5-30 μm.

[0021] Preferably, the silicone oil of the present invention has a viscosity of 50-3000 mPa·s at 25°C.

[0022] More preferably, the silicone oil is selected from dimethyl silicone oil; even more preferably, it is dimethyl silicone oil with a kinematic viscosity of 5 cSt.

[0023] Preferably, the vinylsiloxane is selected from vinyl-terminated polydimethylsiloxane;

[0024] Preferably, the siloxane containing silane is selected from one or more of dihydrogen-terminated polydimethylsiloxane, side-chain hydrogen-containing polydimethylsiloxane, and end-side hydrogen-containing polydimethylsiloxane.

[0025] More preferably, the siloxane containing silane-hydrogen bonds has a viscosity of 4.65-2000 mPa·s at 25°C; even more preferably, it has a viscosity of 4.65-50 mPa·s.

[0026] More preferably, the hydrogen content of the siloxane containing silane is 0.005 wt%-0.8 wt%; even more preferably, it is 0.05 wt%-0.5 wt%.

[0027] More preferably, the platinum catalyst is selected from Karstedt catalyst (Pt2[(CH2=CH)Me2Si]3), chloroplatinic acid (H2PtCl6) or non-metallic Lewis acid catalyst (such as B(C6F5)3).

[0028] The present invention also provides a method for preparing the above-mentioned anti-icing conductor, comprising the following steps:

[0029] The first method:

[0030] (1) Vinylsiloxane, silane containing silane-hydrogen bonds and catalyst are mixed and coated on the surface of the wire, and then cross-linked and cured to prepare an intermediate product;

[0031] (2) Silicone oil is coated on the surface of the intermediate product to prepare the anti-icing wire;

[0032] The second method:

[0033] Vinylsiloxane, silane containing silane-hydrogen bonds, catalyst, silicone oil and solvent are mixed and coated onto the surface of a wire, and then cross-linked and cured to prepare the anti-icing wire.

[0034] The third method:

[0035] Vinylsiloxane, silane containing silane-hydrogen bonds, catalyst, some silicone oil and solvent are mixed and coated on the surface of the wire, and then cross-linked and cured to prepare an intermediate product.

[0036] The remaining silicone oil is coated onto the surface of the intermediate product to prepare the anti-icing wire.

[0037] The crosslinking and curing process involves the hydrosilylation reaction of vinylsiloxane and siloxane containing silane bonds under the action of a catalyst.

[0038] The conductors in the first, second, and third methods are any conductors, including but not limited to outdoor power transmission conductors or ordinary conductors not in use.

[0039] The specific cross-linking and curing reaction is a hydrosilylation reaction between vinylsiloxane and siloxane containing silane bonds under the action of a catalyst.

[0040] The preferred mixing method in the two preparation methods described above is mechanical stirring;

[0041] The preferred rotation speed of the mechanical stirring is 200-1000 rpm;

[0042] The mixing time is preferably 1-10 min.

[0043] The substances mixed in step (1) of the first method may also include solvents. In specific use, depending on the processing requirements, it is possible to choose whether to add solvents to adjust the viscosity of the mixture.

[0044] The first method employs a cross-linking and curing process followed by the introduction of silicone oil. After vinylsiloxane and silane containing silane bonds are cross-linked and cured into a film, silicone oil is injected onto the surface of the film by spraying, dripping, or brushing to achieve the anti-icing effect on the conductor.

[0045] The second method introduces silicone oil before curing, which causes the cross-linked network formed by vinylsiloxane and siloxane containing silane-hydrogen bonds to become entangled with the long chain of the silicone oil, achieving long-term slow release, making the silicone oil less prone to loss, and improving the durability of the anti-icing coating.

[0046] The two methods described above can be used to prepare anti-icing wires by selecting whether to add solvent for dilution or pre-inject silicone oil, depending on actual needs.

[0047] The third method uses a batch-by-batch injection of silicone oil to prepare anti-icing wires. In this method, the silicone oil does not participate in the cross-linking and curing reaction, but only becomes entangled with the long chains of the cross-linking products (the reaction raw materials are vinylsiloxane and siloxane containing silane-hydrogen bonds), thereby reducing the cross-linking density.

[0048] In the third method, the preferred volume ratio of the silicone oil added sequentially is 2:(2.5-3.5); more preferably, it is 2:3.

[0049] Preferably, the molar ratio of vinyl groups in the vinylsiloxane to silane bonds in the silane containing silane bonds is 1:(1-10); more preferably, it is 1:(1-2).

[0050] Preferably, the ratio of the total mass of the vinylsiloxane and the silane containing silane to the mass of the catalyst is 100:(0.0005-0.1); more preferably, it is 100:(0.001-0.005).

[0051] Preferably, the ratio of the total mass of the vinylsiloxane and the silane containing silane to the mass of the solvent is 1:(0.5-10); more preferably, it is 1:(0.5-2).

[0052] The ratio of the total mass of the vinylsiloxane and the silane containing silane to the mass of the silicone oil is 1:(0.1-10); more preferably 1:(0.3-0.6).

[0053] The crosslinking curing time in the above preparation method is preferably 1-48 h.

[0054] The anti-icing conductor prepared by the above method can be directly replenished with silicone oil, realizing the in-situ performance restoration of the anti-icing layer in the anti-icing conductor. This overcomes the limitation of insufficient durability of traditional silicone oil-injected anti-icing coatings, allowing the anti-icing performance of the coating to be maintained for a long time and significantly extending the service life of the anti-icing coating.

[0055] The present invention also provides a method for replenishing silicone oil, wherein silicone oil is coated on the surface of the above-mentioned anti-icing wire or the anti-icing wire prepared by the above-mentioned preparation method.

[0056] The coating method includes, but is not limited to, spraying, dripping, or brushing.

[0057] After the silicone oil described in this invention is applied to the surface of the anti-icing conductor, the silicone oil will migrate autonomously from the surface of the anti-icing conductor to the interior of the anti-icing coating, thereby achieving the purpose of silicone oil replenishment and significantly extending the excellent performance cycle of the anti-icing coating.

[0058] Compared with existing technologies, the anti-icing conductor provided by this invention includes a conductor and an anti-icing coating laminated on its surface; the anti-icing coating includes a crosslinking product and silicone oil; the crosslinking product is obtained by crosslinking and curing vinylsiloxane and silane containing silane-hydrogen bonds under a platinum catalyst. The anti-icing conductor has excellent anti-icing performance and the silicone oil can be replenished to extend the anti-icing cycle. The anti-icing conductor can be directly prepared and then put into actual line use, or it can be obtained by laminating the anti-icing layer onto existing power transmission lines. Attached Figure Description

[0059] Figure 1 The figure shows the results of a continuous ice adhesion strength cyclic test on the anti-icing coating for the power transmission conductor prepared in Example 1.

[0060] Figure 2 The figure shows the performance recovery test results of the anti-icing coating prepared in Example 2 after dimethyl silicone oil replenishment.

[0061] Figure 3 Comparison of the initial ice adhesion strength performance tests of the anti-icing coatings for power transmission lines prepared in Example 1 (post-injection of lubricant dimethyl silicone oil), Example 3 (pre-injection of lubricant dimethyl silicone oil), and Example 4 (injection of lubricant dimethyl silicone oil in batches), as well as pure aluminum sheets and pure substrates;

[0062] Figure 4The figure shows the results of a continuous ice adhesion strength cyclic test on the anti-icing coating prepared in Example 4. Detailed Implementation

[0063] To further illustrate the present invention, the anti-icing conductor and its preparation method provided by the present invention will be described in detail below with reference to embodiments.

[0064] The Sylgard 184 mentioned is the Dow SYLGARD™ 184 silicone elastomer kit, which is available for direct purchase.

[0065] The core component of Sylgard 184 described below is vinyl-terminated polydimethylsiloxane.

[0066] The curing agent of Sylgard 184 described below is mainly composed of silane-terminated polydimethylsiloxane, and also includes a platinum catalyst (Pt2[(CH2=CH)Me2Si]3).

[0067] The dimethyl silicone oil described below was purchased from Dow Corning (whose parent company is Dow Chemical).

[0068] Example 1

[0069] Preparation of anti-icing coating for power transmission lines

[0070] Mix 5g Sylgard 184 main agent with 0.5g Sylgard 184 curing agent, stir for 10 min to mix evenly, and let stand for 15 min to eliminate bubbles; take an appropriate amount of solution and drop it onto the surface of a glass substrate, and place it at 60℃ for 12 h for cross-linking curing (vinyl-terminated polydimethylsiloxane and polydimethylsiloxane containing silane-hydrogen bonds are cross-linked and cured under the catalysis of (Pt2[(CH2=CH)Me2Si]3)) to form a film, and obtain the film layer;

[0071] 150 μL of dimethyl silicone oil (kinematic viscosity of 5 cSt) was dropped onto the surface of the above film layer and left at room temperature for 15 min. The excess dimethyl silicone oil on the surface was removed by rotating the coating machine to prepare an anti-icing coating for the power transmission line with a thickness of 25 μm.

[0072] The initial ice adhesion strength of the anti-icing coating on the transmission line was measured to be 0.0 kPa using the horizontal shear method. After 100 cycles, the ice adhesion strength remained below 10 kPa.

[0073] A continuous ice adhesion strength cyclic test was conducted on the anti-icing coating of the transmission line (e.g., Figure 1 As shown in the figure, the results indicate that the value remains extremely low (10 kPa) even after 100 cycles.

[0074] Example 2

[0075] Preparation of anti-icing coating for power transmission lines

[0076] Mix 10g Sylgard 184 main agent and 1.0g Sylgard 184 curing agent with 5.5ml butyl acetate to prepare a solution with a solute mass percentage of 66.7wt%. Stir for 10 min to mix evenly and let stand for 15 min to eliminate bubbles. Take an appropriate amount of solution and spray it onto the surface of an aluminum plate substrate. Place it at 20℃ for 48 h for cross-linking curing (vinyl-terminated polydimethylsiloxane and polydimethylsiloxane containing silane-hydrogen bonds are cross-linked and cured under the catalysis of (Pt2[(CH2=CH)Me2Si]3)) to form a film.

[0077] 150 μL of dimethyl silicone oil (viscosity 5 cSt) was sprayed onto the surface of the above film layer. After the reaction was completed, an anti-icing coating for the power transmission line was prepared with a thickness of 10 μm.

[0078] The initial ice adhesion strength of the anti-icing coating on the transmission line was measured to be 0.0 kPa using the horizontal shear method. After 40 cycles, the ice adhesion strength remained below 20 kPa.

[0079] The anti-icing coating prepared above was subjected to a performance recovery test by replenishing the lubricant dimethyl silicone oil (e.g.) Figure 2 As shown in the figure, the results indicate that the anti-icing coating of the transmission line that has undergone 40 ice adhesion strength cycles can be restored by simply dripping an appropriate amount of lubricant dimethyl silicone oil (150 μL, kinematic viscosity of 5 cSt) onto the coating surface and allowing it to stand for 10 minutes to replenish the lubricant dimethyl silicone oil.

[0080] The ice adhesion strength of the anti-icing coating on the transmission line was measured by the horizontal shear method. After the lubricant dimethyl silicone oil was added, the ice adhesion strength recovered to 0.0 kPa. After 30 cycles, the ice adhesion strength could still be maintained within 20 kPa.

[0081] Example 3

[0082] Preparation of anti-icing coating for power transmission lines

[0083] 2g of Sylgard 184 main agent and 0.2g of Sylgard 184 curing agent were mixed with 2.2mL of dimethyl silicone oil (viscosity 5cSt) to prepare a solution with a solute mass percentage of 50wt%. The mixture was stirred for 10 min to ensure uniform mixing and allowed to stand for 15 min to eliminate air bubbles. An appropriate amount of the solution was sprayed onto the surface of an aluminum plate substrate and heated at 130℃ for 1 h to crosslink and cure (vinyl-terminated polydimethylsiloxane and polydimethylsiloxane containing silane-hydrogen bonds were crosslinked and cured under the catalysis of (Pt2[(CH2=CH)Me2Si]3)) to form a film, thus preparing an anti-icing coating for power transmission lines with a thickness of 8 μm.

[0084] The initial ice adhesion strength of the anti-icing coating on the transmission line was measured to be 16 kPa using the horizontal shear method. After 32 cycles, the ice adhesion strength reached 50 kPa.

[0085] Example 4

[0086] Preparation of anti-icing coating for power transmission lines

[0087] Mix 1g Sylgard 184 main agent and 0.1g Sylgard 184 curing agent with 0.1mL dimethyl silicone oil (viscosity 5cSt), stir for 10 min to mix evenly, and let stand for 15 min to eliminate bubbles; take an appropriate amount of solution and spin coat it onto the surface of a glass substrate using a spin coater, and place it at 80℃ for 8 h for cross-linking and curing (vinyl-terminated polydimethylsiloxane and polydimethylsiloxane containing silane-hydrogen bonds are cross-linked and cured under the catalysis of (Pt2[(CH2=CH)Me2Si]3)) to form a film, and obtain the film layer;

[0088] 150 μL of dimethyl silicone oil (kinematic viscosity of 5 cSt) was dropped onto the surface of the above film layer and left at room temperature for 30 min. The excess dimethyl silicone oil on the surface was removed by rotating the coating machine to prepare an anti-icing coating for the power transmission line with a thickness of 28 μm.

[0089] The initial ice adhesion strength of the anti-icing coating on the transmission line was measured to be 0.0 kPa using the horizontal shear method. A continuous ice adhesion strength cyclic test was then conducted on the anti-icing coating (e.g.,...). Figure 4 As shown in the figure, the results indicate that the ice adhesion strength reaches 20 kPa when the number of cycles is 22.

[0090] The anti-icing coatings for power transmission lines prepared in Example 3 (pre-injection of dimethyl silicone oil lubricant), Example 1 (post-injection of dimethyl silicone oil lubricant), and Example 4 (sequential injection of dimethyl silicone oil lubricant) were compared with the initial ice adhesion strength of pure aluminum sheets and pure substrates. Figure 3As shown in the figure, the results indicate that the anti-icing coating of the transmission line prepared by injecting lubricant dimethyl silicone oil in the later stage or in batches has better performance. The initial ice adhesion strength is 0.0 kPa, which is better than the pre-injection of lubricant dimethyl silicone oil and significantly better than the anti-icing performance of pure substrate or pure aluminum sheet.

[0091] The above description of the embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An anti-icing conductor, characterized in that, It includes wires and an anti-icing layer composited on its surface; The anti-icing coating comprises crosslinking products and silicone oil; The crosslinking product is obtained by crosslinking and curing vinylsiloxane and silane containing silane hydrogen bonds under a platinum catalyst.

2. The anti-icing conductor according to claim 1, characterized in that, The anti-icing coating includes a cross-linking product layer and a silicone oil layer; The cross-linked product layer is in contact with the wire, and the silicone oil layer is in contact with the cross-linked product layer; The crosslinking product layer is formed from the crosslinking product, and the silicone oil layer is formed from silicone oil.

3. The anti-icing conductor according to claim 1, characterized in that, The anti-icing coating comprises a crosslinking product and silicone oil entangled with its crosslinking network.

4. The anti-icing conductor according to claim 1, characterized in that, The cross-linking curing temperature is 20℃-130℃.

5. The anti-icing conductor according to claim 1, characterized in that, The thickness of the anti-icing coating is 5-1000 μm.

6. The anti-icing conductor according to claim 1, characterized in that, The silicone oil is selected from dimethyl silicone oil.

7. The anti-icing conductor according to claim 1, characterized in that, The vinylsiloxane is selected from vinyl-terminated polydimethylsiloxane; The siloxane containing silane is selected from one or more of the following: dihydro-terminated polydimethylsiloxane, side-chain hydrogen-containing polydimethylsiloxane, and end-side hydrogen-containing polydimethylsiloxane. The siloxane containing silane-hydrogen bonds has a viscosity of 4.65-2000 mPa·s at 25°C; The hydrogen content of the siloxane containing silane-hydrogen bonds is 0.005 wt% to 0.8 wt%. The platinum catalyst is selected from Karstedt catalysts, chloroplatinic acid, or non-metallic Lewis acid catalysts.

8. The method for preparing the anti-icing conductor according to any one of claims 1-7, characterized in that, Includes the following steps: The first method: (1) Vinylsiloxane, silane containing silane-hydrogen bonds and catalyst are mixed and coated on the surface of the wire, and then cross-linked and cured to prepare an intermediate product; (2) Silicone oil is coated on the surface of the intermediate product to prepare the anti-icing wire; The second method: Vinylsiloxane, silane containing silane-hydrogen bonds, catalyst, silicone oil and solvent are mixed and coated onto the surface of a wire, and then cross-linked and cured to prepare the anti-icing wire. The third method: Vinylsiloxane, silane containing silane-hydrogen bonds, catalyst, some silicone oil and solvent are mixed and coated on the surface of the wire, and then cross-linked and cured to prepare an intermediate product. The remaining silicone oil is coated onto the surface of the intermediate product to prepare the anti-icing wire. The crosslinking and curing process involves the hydrosilylation reaction of vinylsiloxane and siloxane containing silane bonds under the action of a catalyst.

9. The preparation method according to claim 8, characterized in that, The molar ratio of vinyl groups in the vinyl siloxane to silane bonds in the silane containing silane bonds is 1:(1-10). The total mass ratio of the vinylsiloxane and the silane containing silane bonds to the catalyst is 100:(0.0005-0.1); The ratio of the total mass of the vinylsiloxane and the silane containing silane to the mass of the solvent is 1:(0.5-10). The ratio of the total mass of the vinylsiloxane and the silane containing silane bonds to the mass of the silicone oil is 1:(0.1-10).

10. A method for replenishing silicone oil, characterized in that, The surface of the anti-icing wire as described in any one of claims 1-7 or the anti-icing wire prepared by the preparation method described in claim 8 or 9 is coated with silicone oil.

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