Wear-resisting and windage yaw-preventing insulating inhaul cable and preparation method thereof

Abstract

The invention provides a wear-resisting and windage yaw-preventing insulating inhaul cable and a preparation method thereof. The wear-resisting and windage yaw-preventing insulating inhaul cable comprises a core rod, an insulating umbrella skirt arranged outside the core rod in a wrapping mode and an insulating sheath arranged on an outer impact area of the core rod in a wrapping mode, and the insulating umbrella skirt and the insulating sheath are made of silicon rubber materials; the wear-resistant sheath is arranged outside the insulating sheath; and the mass ratio of the raw materials for preparing the wear-resistant sheath is that the aminated polyether-ether-ketone powder to the polyurethane elastomer is 1: (2-3). The aminated polyether-ether-ketone powder has very high wear resistance and mechanical strength, the polyurethane elastomer has good elasticity and impact resistance, and after the polyurethane elastomer and the aminated polyether-ether-ketone powder are mixed, the wear-resistant sheath made of a composite material which is resistant to impact and has certain elasticity can be formed. The problem that a silicone rubber insulating sheath is damaged after an existing windage yaw prevention insulating inhaul cable is impacted by a suspension insulator of a power transmission line for a long time is effectively solved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of wind-prevention equipment for power transmission lines, and in particular to a wear-resistant wind-prevention insulating stay and a preparation method thereof. BACKGROUND

[0002] Wind deviation refers to the phenomenon that an overhead power transmission line deviates from its vertical position under the action of wind, including types such as jumper wind deviation, inter-phase wind deviation and insulator wind deviation, which can cause insufficient insulation distance of the line to the tower, and further cause discharge tripping failure, seriously affecting the safe and stable operation of the power system.

[0003] In order to deal with the problem of wind deviation, a wind-prevention device is generally used. The wind-prevention device is an important power facility protection equipment, and its working principle is to fix the wind-prevention device in a proper position through fixing components, insulating components, core rods and the like, so as to play a buffering and protection role when the conductor is subjected to the action of wind, prevent the power transmission line from approaching the tower due to the action of wind, ensure the absolute safety distance between the power transmission line and the tower, and thus prevent the occurrence of power transmission line arc burn and wire breakage, and ensure the normal operation of the power grid.

[0004] Patent application publication document CN221058015U discloses a novel wind-prevention insulating stay, which comprises a first insulator, the first insulator comprises a first core body made of insulating material, the outer side of the first core body is covered with a cover made of insulating material, and a soft insulating material made anti-collision sheath is arranged at the middle position of the cover.

[0005] However, the impact resistance performance of the protective sleeve made of such a silicone rubber material is poor, and there is a risk of damage to the silicone rubber insulating sheath after long-time impact of the power transmission line suspension insulator. SUMMARY

[0006] The technical problem to be solved by the application is that the impact resistance performance of the silicone rubber insulating sheath of the existing wind-prevention insulating stay is poor, and there is a risk of damage to the silicone rubber insulating sheath after long-time impact of the power transmission line suspension insulator.

[0007] In order to solve the above problems, the application provides a wear-resistant wind-prevention insulating stay, which comprises a core rod, an insulating shed covered on the outer side of the core rod, and an insulating sheath covered on the impact area of the outer side of the core rod, and the materials of the insulating shed and the insulating sheath are silicone rubber materials; further comprising a wear-resistant sheath arranged outside the insulating sheath, and the mass ratio of the raw materials for preparing the wear-resistant sheath is amino polyether ether ketone powder: polyurethane elastomer = 1:2-3.

[0008] The polyether ether ketone powder has high wear resistance and mechanical strength, the polyurethane elastomer has good elasticity and impact resistance, and the polyurethane elastomer mixed with the polyether ether ketone powder can form a wear-resistant sheath made of a composite material which is both impact-resistant and elastic. In addition, the amino groups in the amino-modified polyether ether ketone powder can react with isocyanate in the polyurethane to form amide groups, thereby improving the compatibility of the polyether ether ketone powder and the polyurethane. The above scheme effectively solves the problem that the existing windage prevention insulating stay is damaged due to the impact of the power transmission line suspension insulator for a long time.

[0009] According to the above wear-resistant windage prevention insulating stay, the wear-resistant sheath is formed by doping amino-modified polyether ether ketone powder in the polyurethane elastomer.

[0010] According to the above wear-resistant windage prevention insulating stay, the particle size of the amino-modified polyether ether ketone powder is not more than 100 mesh.

[0011] According to the above wear-resistant windage prevention insulating stay, the polyurethane elastomer is subjected to vulcanization treatment.

[0012] According to the above wear-resistant windage prevention insulating stay, the wear-resistant sheath is attached to the insulating sheath by polyurethane glue, and the wear-resistant sheath is formed by connecting wear-resistant sheets by rivets.

[0013] The application also provides a preparation method of a wear-resistant windage prevention insulating stay. The insulating umbrella skirt and the insulating sheath are formed by injection molding outside the core rod, the wear-resistant sheath is sleeved outside the insulating sheath, and the wear-resistant sheath is bonded by polyurethane glue.

[0014] According to the above preparation method of the wear-resistant windage prevention insulating stay, the preparation method of the wear-resistant sheath comprises the following steps. Under the protection of nitrogen, the polyether polyol is reacted with diphenyl methane diisocyanate to generate a prepolymer, a chain extender is added to the prepolymer for chain extension reaction, and additives and vulcanizing agents are added to obtain a polyurethane elastomer liquid; The amino-modified polyether ether ketone powder is added to the polyurethane elastomer liquid, and dispersion is performed to obtain a reinforced polyurethane elastomer liquid doped with the amino-modified polyether ether ketone powder; The reinforced polyurethane elastomer liquid is poured into a mold coated with a release agent, and after solidification, the mold is demolded after pressure curing, and the polyurethane elastomer doped with the amino-modified polyether ether ketone powder is obtained after vulcanization.

[0015] According to the above preparation method of the wear-resistant windage prevention insulating stay, in the dispersion process, a stirrer is used for stirring, and ultrasonic waves are applied for dispersion.

[0016] According to the preparation method of the wear-resistant windage-preventing insulating cable of the application, the ultrasonic frequency of the ultrasonic wave is 20-40 Hz, the power is 800-1200 W, and the amplitude is 70-90%.

[0017] According to the preparation method of the wear-resistant windage-preventing insulating cable of the application, the preparation method of the aminated polyether ether ketone is as follows: polyether ether ketone is subjected to hydroxylation treatment to obtain hydroxylated polyether ether ketone; and the hydroxylated polyether ether ketone is subjected to amination treatment to obtain the aminated polyether ether ketone.

[0018] The preparation method of the aminated polyether ether ketone is specifically as follows: Under the protection of nitrogen, sodium borohydride is fully dissolved in dimethyl sulfoxide solvent, and then polyether ether ketone powder is added to the sodium borohydride solution for sufficient reaction; after the reaction is completed, the polyether ether ketone powder is washed with methanol and dried to obtain the hydroxylated polyether ether ketone; Under the protection of nitrogen, the hydroxylated polyether ether ketone is added to the γ-aminopropyl triethoxysilane toluene solution for sufficient reaction, and then washed with methanol and dried to obtain the aminated polyether ether ketone powder.

[0019] The technical effect of the application is that: The application introduces a wear-resistant sheath, the polyether ether ketone powder has high wear resistance and mechanical strength, the polyurethane elastomer has good elasticity and impact resistance, and the polyurethane elastomer and the polyether ether ketone powder can form a wear-resistant sheath made of a composite material that is both impact-resistant and elastic. In addition, the amino groups in the aminated polyether ether ketone powder can react with the isocyanate in the polyurethane to form amide groups, thereby improving the compatibility of the polyether ether ketone powder and the polyurethane. The above-mentioned scheme effectively solves the problem that the existing windage-preventing insulating cable is damaged after being struck by a power transmission line suspension insulator for a long time. The wear-resistant windage-preventing insulating cable provided by the application not only improves the wear resistance of the insulating sheath, but also maintains good insulating performance, thereby prolonging the service life of the cable and improving safety. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic view of the wear-resistant windage-preventing insulating cable applied to a power transmission tower.

[0021] Figure 2 It is a schematic view of one embodiment of the wear-resistant windage-preventing insulating cable of the application.

[0022] BRIEF DESCRIPTION OF DRAWINGS: 1, core rod; 2, insulating shed; 3, insulating sheath; 4, wear-resistant sheath; 100, windage-preventing insulating cable; 200, power transmission tower; 210, suspension insulator; 201, first hanging point; 202, second hanging point. DETAILED DESCRIPTION

[0023] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0024] As Figure 1 The embodiment of installing the wear-resistant windage-resistant insulating stay 100 provided by the present application on the power transmission line tower 200 is illustrated, as Figure 1 The schematic diagram of installing the wear-resistant windage-resistant insulating stay on the cat head tower is illustrated. Those skilled in the art can also install the wear-resistant windage-resistant insulating stay 100 provided by the present application on the wine glass tower, the door type tower, etc.

[0025] The wear-resistant windage-resistant insulating stay 100 is installed on the power transmission line tower 200, and the installation method is as follows: The upper end of the wear-resistant windage-resistant insulating stay is installed at the first hanging point 201 which is a first distance from the suspension insulator 210 by using the wear-resistant fitting at the upper end of the wear-resistant windage-resistant insulating stay, and the first hanging point is located at the cross arm of the power transmission line tower 200; the lower end of the wear-resistant windage-resistant insulating stay is installed at the second hanging point 202 of the tower body of the power transmission line tower by using the wear-resistant fitting 3 at the lower end of the wear-resistant windage-resistant insulating stay.

[0026] It should be noted that the drawings are only used to illustrate the technical solutions themselves, and do not limit the specific specifications and parameters, for example, the voltage level of the applied power transmission line tower 200 can be used for various voltage levels of tower types, such as 110kV, 220kV, 330kV, 500kV, etc. For example, the applicable voltage level and tower type are: 35kV wine glass tower, cat head tower, door type tower; 110kV wine glass tower, cat head tower, door type tower; 220kV wine glass tower, cat head tower, door type tower; 330kV wine glass tower, cat head tower, door type tower; 500kV wine glass tower, cat head tower, door type tower; It can also be used for tower types with higher voltage levels or tower types with lower voltage levels, and the specific parameters for different voltage levels of power transmission line towers can be designed according to the relevant specifications in the art, which will not be described here.

[0027] As Figure 2An embodiment of the wear-resistant windage-resistant insulating cable provided by the present application is shown, which includes a core rod 1, an insulating umbrella skirt 2 wrapped around the core rod 1, an insulating sheath 3 wrapped around the impact area of the core rod 1, and the materials of the insulating umbrella skirt 2 and the insulating sheath 3 are silicone rubber. The wear-resistant sheath 4 is wrapped around the insulating sheath 3, and the mass ratio of the raw materials for preparing the wear-resistant sheath 4 is amino-polyether-ether-ketone powder: polyurethane elastomer = 1:2-3.

[0028] In the embodiment, the core rod 1 of the cable serves as the main body structure and plays a role in supporting and transmitting tension. The insulating umbrella skirt 2 is wrapped around the core rod 1 to increase the insulation performance and the anti-creeper distance. The insulating sheath 3 is arranged in the impact area of the core rod 1 to enhance the protection capability of the area. The materials of the insulating umbrella skirt 2 and the insulating sheath 3 are both silicone rubber, which has good insulation performance but relatively poor wear resistance. In order to enhance the wear resistance of the insulating sheath 3, the wear-resistant sheath 4 is arranged outside the insulating sheath 3.

[0029] By introducing the wear-resistant sheath 4, the polyether-ether-ketone powder has high wear resistance and mechanical strength, the polyurethane elastomer has good elasticity and impact resistance, and the wear-resistant sheath made of the composite material that is resistant to impact and has elasticity can be formed after the polyurethane elastomer is mixed with the polyether-ether-ketone powder. The amino groups in the amino-polyether-ether-ketone powder can react with the isocyanate in the polyurethane to form amide groups, thereby improving the compatibility of the polyether-ether-ketone powder and the polyurethane. The problem that the silicone rubber insulating sheath of the existing windage-resistant insulating cable is damaged after being impacted by the power transmission line suspension insulator for a long time is effectively solved. The wear-resistant windage-resistant insulating cable not only improves the wear resistance of the insulating sheath but also maintains the good insulation performance, thereby prolonging the service life and safety of the cable.

[0030] In some embodiments, the structure of the wear-resistant sheath 4 is that the amino-polyether-ether-ketone powder is doped in the polyurethane elastomer. The particle size of the amino-polyether-ether-ketone powder is not more than 100 mesh. In a preferred embodiment, the polyurethane elastomer is subjected to vulcanization treatment.

[0031] Specifically, the wear-resistant sheath 4 is made by doping the amino-polyether-ether-ketone powder into the polyurethane elastomer. It can be ensured that the amino-polyether-ether-ketone powder is uniformly distributed in the polyurethane elastomer matrix, so as to fully utilize the high mechanical strength characteristics of the amino-polyether-ether-ketone. At the same time, the polyurethane elastomer as the matrix material provides the necessary elasticity and impact resistance, so that the wear-resistant sheath 4 can effectively absorb energy when impacted and reduce the risk of damage.

[0032] In order to facilitate the uniform dispersion of the aminated polyether ether ketone powder in the polyurethane elastomer, the particle size of the aminated polyether ether ketone powder is limited to not more than 100 mesh in the present application. In addition, fine particles can also more effectively fill the micropores and defects in the polyurethane elastomer, improving the overall density and wear resistance of the material.

[0033] In a preferred embodiment, the polyurethane elastomer is subjected to vulcanization treatment to introduce cross-linking bonds to enhance the network structure of the polymer, thereby improving its strength, hardness and wear resistance. The vulcanized polyurethane elastomer not only has better physical properties.

[0034] In some embodiments, the wear-resistant sheath 4 is attached to the insulating sheath 3 by polyurethane glue, and the wear-resistant sheath 4 is formed by riveting the wear-resistant sheets. The wear-resistant sheath 4 is attached to the insulating sheath 3 by polyurethane glue. Polyurethane glue is a commonly used adhesive with excellent adhesion and weather resistance, which can ensure the firm combination between the wear-resistant sheath 4 and the insulating sheath 3. The wear-resistant sheath 4 is formed by riveting the wear-resistant sheets, and a sheath structure can be formed by riveting.

[0035] In another embodiment of the present application, a method for preparing a wear-resistant windage-resistant insulating cable is provided, comprising: injection molding the insulating umbrella skirt 2 and the insulating sheath 3 outside the core rod 1; and bonding the wear-resistant sheath 4 to the insulating sheath 3 by polyurethane glue.

[0036] The method for preparing the wear-resistant sheath 4 comprises: Under the protection of nitrogen, the polyether polyol is reacted with diphenyl methane diisocyanate to form a prepolymer, a chain extender is added to the prepolymer for chain extension reaction, and additives and vulcanizing agents are added to obtain a polyurethane elastomer liquid; the vulcanizing agent is selected from 3,3'-dichloro-4,4'-diamino diphenyl methane.

[0037] The aminated polyether ether ketone powder is added to the polyurethane elastomer liquid, and dispersed to obtain a reinforced polyurethane elastomer liquid doped with aminated polyether ether ketone powder; The reinforced polyurethane elastomer liquid is poured into a mold coated with a release agent, and after solidification, it is demolded after pressure curing, and then vulcanized to obtain a polyurethane elastomer doped with aminated polyether ether ketone powder.

[0038] In a preferred embodiment, during the dispersion process, a stirrer is used for stirring, and ultrasonic waves are applied for dispersion. The ultrasonic frequency of the ultrasonic waves is 20-40 Hz, the power is 800-1200 W, and the amplitude is 70-90%.

[0039] The preparation method of the aminated polyether ether ketone is as follows: polyether ether ketone is subjected to hydroxylation treatment to obtain hydroxylated polyether ether ketone; the hydroxylated polyether ether ketone is subjected to amination treatment to obtain aminated polyether ether ketone. The above hydroxylated polyether ether ketone can also be obtained by other means disclosed. The amination treatment substance can also use other amino-containing coupling agents.

[0040] It should be noted that in the present application, the polyurethane elastomer solution is prepared by using conventional technical means, and the skilled person in the art knows how to control the temperature, pressure and other conditions, and the range of values that can be achieved is not described here.

[0041] The preparation method of the wear-resistant sheath 4 will be described below through specific examples.

[0042] Amino-terminated polyether ether ketone preparation example Under nitrogen protection, 800 parts of sodium borohydride and 500 parts of dimethyl sulfoxide solvent were fully dissolved at 125℃, then 500 parts of polyether ether ketone powder was added to the sodium borohydride solution, and the reaction was carried out at 125℃ for 20 min. After that, the reacted polyether ether ketone powder was washed with methanol and vacuum dried at 60℃ for 3h to obtain hydroxylated polyether ether ketone. Under nitrogen protection, the above hydroxylated polyether ether ketone was added to a 5% concentration γ-aminopropyl triethoxysilane toluene solution and reacted for 20h, then washed with methanol and vacuum dried at 110℃ for 20min to obtain aminated polyether ether ketone powder.

[0043] Example 1 S1, under nitrogen protection, 70 parts of polytetramethylene glycol (PTMEG) with a molecular weight of 1800 and 30 parts of diphenyl methane diisocyanate (MDI) were reacted at 87℃ to form a prepolymer, 50 parts of 1,4-butanediol chain extender was added to the prepolymer for chain extension reaction, and 0.5 parts of anti-aging agent, 0.5 parts of ultraviolet absorber and 3 parts of vulcanizing agent were added to obtain a polyurethane elastomer solution; S2, 75.5 parts of aminated polyether ether ketone powder with a particle size of 100 mesh was added to the polyurethane elastomer solution and dispersed to obtain a reinforced polyurethane elastomer solution doped with aminated polyether ether ketone powder; during the dispersion process, the stirring speed of the stirrer was 2000 rpm, the stirring time was 30 min, and ultrasonic waves were applied for dispersion, the ultrasonic frequency was 30 Hz, the power was 1000 W, the amplitude was 80%, and the ultrasonic time was 30 min.

[0044] S3, the reinforced polyurethane elastomer solution was poured into a mold coated with a release agent, and when solidified, it was pressed at 1 MPa for curing, then demolded, and then vulcanized in a 125℃ vulcanization box for 24h to obtain a wear-resistant sheath with a thickness of 5mm.

[0045] Examples 2-5 differ from Example 1 in that the control conditions of each step are different, such as the particle size of the aminated polyether ether ketone powder, the amount of addition, whether the ultrasonic wave catalysis step is performed, and the control conditions not listed in Table 1 are the same as those of Example 1. See Table 1 for details.

[0046] Comparative Example 1 differs from Example 1 in that the polyether ether ketone powder added is not subjected to amination treatment, and the control conditions not listed in Table 1 are the same as those of Example 1. See Table 1 for details.

[0047] Comparative Example 2 differs from Example 1 in that it does not include Step S2, and the control conditions not listed in Table 1 are the same as those of Example 1. See Table 1 for details.

[0048] Table 1 Control conditions of each step of each example and comparative example The abrasion-resistant sheaths prepared in Examples 1-5 and Comparative Examples 1-2 above were measured for tensile strength, elongation at break, abrasion performance (abrasion resistance was tested according to the national standard GB / T 1768-2006, using a rotating rubber grinding wheel method to test the abrasion resistance, and the abrasion loss was calculated), and notched impact strength (the notched impact strength test was measured according to the national standard GB / T 1451-2005). The measurement results are shown in Table 2.

[0049] Table 2 Mechanical properties of the abrasion-resistant sheaths obtained in each example and comparative example Tensile strength / MPa Elongation at break / % Wear loss / mg Notched impact strength / KJ / m2 Example 1 61 537 21 7.6 Example 2 60 540 22 7.4 Example 3 63 549 21 7.8 Example 4 55 529 27 7.1 Example 5 54 528 29 6.8 Comparative Example 1 59 536 28 7.1 Comparative Example 2 51 542 41 4.7 Comparing Example 1 and Example 3, it can be seen that the aminated polyether ether ketone powder in Example 3 is small, which is beneficial to improving the tensile strength, notched impact strength, and elongation at break of the abrasion-resistant sheath.

[0050] Comparing Example 1 and Example 4, it can be seen that the use of ultrasonic dispersion in Example 1 can promote the dispersion of the aminated polyether ether ketone powder in the polyurethane, thereby improving the tensile strength, notched impact strength, elongation at break, and abrasion resistance of the abrasion-resistant sheath.

[0051] Comparing Example 1 and Example 5, it can be seen that the vulcanization step is also performed in Example 1, and the use of the vulcanization step can introduce cross-linking bonds to enhance the network structure of the polymer, thereby improving the tensile strength, notched impact strength, elongation at break, and abrasion resistance of the abrasion-resistant sheath.

[0052] It can be seen from Example 1 and Comparative Example 1 that, in Example 1, the polyether ether ketone powder is added for amination treatment, compared with the ordinary polyether ether ketone powder added in the polyurethane in Comparative Example 1, the amino groups in the aminated polyether ether ketone powder in Example 1 can react with the isocyanate in the polyurethane to form amide groups, thereby improving the compatibility of the polyether ether ketone powder and the polyurethane, and thus the tensile strength, notched impact strength, elongation at break, and wear resistance of the wear-resistant sheath can be improved.

[0053] It can be seen from Comparative Example 1 and Comparative Example 2 that, in Comparative Example 1, the polyether ether ketone powder is added in the polyurethane, the polyether ether ketone powder has high wear resistance and mechanical strength, the polyurethane elastomer has good elasticity and impact resistance, and after the polyurethane elastomer is mixed with the polyether ether ketone powder, although the elastic performance of Comparative Example 1 is weak, it fully meets the wind deflection prevention requirement. However, the tensile strength, notched impact strength, and wear resistance are significantly improved, and a wear-resistant sheath made of a composite material that is both impact-resistant and elastic can be formed.

[0054] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent substitutions for part or all of the technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A wear-resistant and wind-proof insulating cable, characterized in that: include: A core rod (1), an insulating shed (2) covering the outside of the core rod (1), and an insulating sheath (3) covering the impact area outside the core rod (1), wherein the insulating shed (2) and the insulating sheath (3) are made of silicone rubber; It also includes a wear-resistant sheath (4) arranged outside the insulating sheath (3), and the mass ratio of raw materials for preparing the wear-resistant sheath (4) is amino polyetheretherketone powder: polyurethane elastomer = 1:2-3.

2. The wear-resistant and wind-proof insulating cable according to claim 1, characterized in that: The wear-resistant sheath (4) has a structure in which amino-polyetheretherketone powder is doped into the polyurethane elastomer.

3. The wear-resistant and wind-proof insulating cable according to claim 1, characterized in that: The particle size of the amino polyetheretherketone powder is no more than 100 meshes.

4. The wear-resistant and wind-proof insulating cable according to claim 1, characterized in that: The wear-resistant sheath (4) is attached to the outer layer of the insulating sheath (3) by polyurethane glue, and the wear-resistant sheath (4) is a sheath formed by connecting wear-resistant sheets through rivets.

5. A method for preparing a wear-resistant and wind-proof insulating cable, characterized in that: Used to prepare the wear-resistant and wind-proof insulating cable according to any one of claims 1 to 4, comprising: Injection molding an insulating shed (2) and an insulating sheath (3) outside the core rod (1); A wear-resistant sheath (4) is provided outside the insulating sheath (3), and the wear-resistant sheath (4) is bonded using polyurethane glue.

6. The method for preparing the wear-resistant and wind-resistant insulating cable according to claim 1 or 5, characterized in that: The preparation method of the wear-resistant sheath (4) comprises: Under nitrogen protection, polyether polyol reacts with diphenylmethane diisocyanate to form a prepolymer, a chain extender is added to the prepolymer to carry out a chain extension reaction, and an auxiliary agent and a vulcanizing agent are added to obtain a polyurethane elastomer liquid; Adding amino polyether ether ketone powder to the polyurethane elastomer liquid and dispersing the mixture to obtain a reinforced polyurethane elastomer liquid doped with amino polyether ether ketone powder; The reinforced polyurethane elastomer liquid is poured into a mold coated with a release agent, and when solidified, it is pressurized and cured before demoulding. The polyurethane elastomer doped with amino-polyetheretherketone powder is obtained through vulcanization.

7. The method for preparing the wear-resistant and wind-proof insulating cable according to claim 6, characterized in that: During the dispersion process, a stirrer is used for stirring, and ultrasonic waves are applied for dispersion.

8. The method for preparing the wear-resistant and wind-proof insulating cable according to claim 7, characterized in that: The ultrasonic wave has an ultrasonic frequency of 20 Hz to 40 Hz, a power of 800 W to 1200 W, and an amplitude of 70% to 90%.

9. The method for preparing the wear-resistant and wind-proof insulating cable according to claim 6, characterized in that: The preparation method of the amino polyetheretherketone is: The polyetheretherketone is subjected to hydroxylation treatment to obtain hydroxylated polyetheretherketone; The hydroxylated polyetheretherketone is subjected to amination treatment to obtain the aminated polyetheretherketone.

10. The method for preparing the wear-resistant and wind-proof insulating cable according to claim 9, characterized in that: The preparation method of the amino polyetheretherketone is specifically as follows: Under nitrogen protection, sodium borohydride is fully dissolved in dimethyl sulfoxide solvent, and polyetheretherketone powder is added to the sodium borohydride solution for full reaction. After the reaction, the polyetheretherketone powder is washed with methanol and dried to obtain hydroxylated polyetheretherketone; Under nitrogen protection, the hydroxylated polyetheretherketone was added to a toluene solution of γ-aminopropyltriethoxysilane for sufficient reaction, and then washed with methanol and dried to obtain amino polyetheretherketone powder.

Images