Medical high-frequency transmission type wire cable and preparation method and application thereof

Abstract

The invention relates to the technical field of wires and cables, and provides a medical high-frequency transmission type wire and cable and a preparation method and application thereof. A medical high-frequency transmission type wire and cable comprises a conductor, an insulating layer, a metal shielding layer and an outer protective layer from inside to outside in sequence, and the insulating layer comprises the following components in parts by weight: 100 parts of first polyethylene, 10-15 parts of butadiene styrene rubber, 5-8 parts of ethylene-vinyl acetate copolymer, 8-16 parts of a reinforced premix, 8-12 parts of a flame retardant, 1.5-2.5 parts of an antioxidant, 1-3 parts of a plasticizer and 0.2-0.5 part of a vulcanizing agent; the reinforced premix comprises the following components in parts by weight: 18-24 parts of second polyethylene, 6-13 parts of zirconium silicate, 2-8 parts of amorphous silicon dioxide, 3-7 parts of 3-hydroxyphenylphosphoryl propionic acid and 1-3 parts of a silane coupling agent. According to the technical scheme, the problem of poor mechanical property of the insulating layer of the traditional Chinese medicine high-frequency transmission type wire and cable in related technologies is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of wires and cables, and in particular to a medical high-frequency transmission wire and cable, a preparation method thereof, and an application thereof. Background Art

[0002] In modern medicine, the accuracy and stability of high-frequency signal transmission are crucial to the diagnostic effectiveness of medical equipment. Cables used for high-frequency signal transmission are typically made of polyethylene, a material with low dielectric loss and excellent insulation properties. However, polyethylene itself has limited mechanical strength and may not be able to withstand the relatively large mechanical stresses during high-frequency signal transmission.

[0003] To improve the mechanical properties of cable insulation, inorganic reinforcing fillers, such as silica and calcium carbonate, are often added to the insulation layer. Due to their high strength and high modulus, inorganic reinforcing fillers can improve the mechanical properties of cable insulation to a certain extent. However, in actual applications, when inorganic reinforcing fillers are directly added to the insulation base material, they often suffer from poor interfacial bonding and dispersion. This leads to an uneven internal structure of the insulation layer, which limits the improvement in mechanical properties and, in turn, affects the signal transmission and stability of the cable.

[0004] Therefore, a medical high-frequency transmission type wire and cable is developed, whose insulation layer has high-frequency signal transmission function and good mechanical properties. This plays an important role in improving the service life of medical high-frequency transmission type wire and cable and meeting the stability of signal transmission in medical equipment. Summary of the Invention

[0005] The present invention provides a medical high-frequency transmission type wire and cable, a preparation method and application thereof, which solves the problem of poor mechanical properties of the insulation layer of the medical high-frequency transmission type wire and cable in the related art.

[0006] The technical solutions of the present invention are as follows: The present invention provides a medical high-frequency transmission type wire and cable, which comprises, from the inside to the outside, a conductor, an insulating layer, a metal shielding layer, and an outer sheath, wherein the insulating layer comprises the following components in parts by weight: 100 parts of first polyethylene, 10-15 parts of styrene-butadiene rubber, 5-8 parts of ethylene-vinyl acetate copolymer, 8-16 parts of reinforcing premix, 8-12 parts of flame retardant, 1.5-2.5 parts of antioxidant, 1-3 parts of plasticizer, and 0.2-0.5 parts of vulcanizing agent; The reinforced premix comprises the following components in parts by weight: 18-24 parts of second polyethylene, 6-13 parts of zirconium silicate, 2-8 parts of amorphous silicon dioxide, 3-7 parts of 3-hydroxyphenylphosphatopropionic acid, and 1-3 parts of a silane coupling agent.

[0007] The insulating layer of the medical high-frequency transmission type wire and cable of the present invention uses polyethylene as the main base material, which provides basic insulating performance for the insulating layer. At the same time, under the action of styrene-butadiene rubber, ethylene-vinyl acetate copolymer, reinforcing premix, flame retardant, antioxidant, plasticizer and vulcanizer, an insulating layer with a stable internal structure can be prepared, thereby ensuring the comprehensive performance of the medical high-frequency transmission type wire and cable, such as flame retardancy and oxidation resistance.

[0008] In the insulation layer of the medical high-frequency transmission type wire and cable of the present invention, the styrene-butadiene rubber itself has good elasticity, and the ethylene-vinyl acetate copolymer has a good toughening effect. The styrene-butadiene rubber, ethylene-vinyl acetate copolymer and polyethylene work together to improve the overall toughness of the insulation layer, thereby improving the overall performance of the insulation layer of the medical high-frequency transmission type wire and cable.

[0009] In the insulation layer of the medical high-frequency transmission type wire and cable of the present invention, the addition of a flame retardant can improve the thermal stability of the material to a certain extent and reduce the possibility of its burning at high temperatures. The flame retardant can be any one or more conventional flame retardants in the field, for example, it can be a phosphorus-based flame retardant or a nitrogen-based flame retardant, wherein the phosphorus-based flame retardant can be lithium diethyl hypophosphite, triphenyl phosphate, or tricresyl phosphate, and the nitrogen-based flame retardant can be melamine or melamine cyanurate, preferably lithium diethyl hypophosphite.

[0010] In the insulation layer of the medical high-frequency transmission type wire and cable of the present invention, the addition of an antioxidant can slow down the oxidative degradation rate of the insulation layer material by capturing free radicals. The antioxidant can be any one or more conventional antioxidants in the art, for example, antioxidant 1024, antioxidant 1010, antioxidant 300, antioxidant 626, antioxidant 1076, preferably antioxidant 1010, antioxidant 300, antioxidant 1024, and more preferably antioxidant 1010.

[0011] In the insulating layer of the medical high-frequency transmission type wire and cable of the present invention, the addition of a plasticizer can make the various components in the insulating layer more compatible, and at the same time make the insulating layer material easier to process and shape. The plasticizer can be any one or more conventional plasticizers in the art, for example, it can be dioctyl phthalate, dibutyl phthalate, dioctyl sebacate, dioctyl adipate, preferably dibutyl phthalate, dioctyl sebacate, and more preferably dioctyl sebacate.

[0012] As a further technical solution, the preparation method of the reinforced premix comprises the following steps: A1, dissolving the 3-hydroxyphenylphosphatopropionic acid in ethanol, adding zirconium silicate, amorphous silica and a silane coupling agent, mixing uniformly, concentrating, and drying to obtain a premix; A2. Blending the second polyethylene and the premix, melting, extruding, and granulating to obtain the reinforced premix.

[0013] As a further technical solution, in step A1, when the mixing is uniform, stirring is adopted, the stirring speed is 250~350rpm, for example, it can be 250rpm, 280rpm, 300rpm, 320rpm, 350rpm, preferably 300rpm, and the stirring time is 20~40min, for example, it can be 20min, 25min, 30min, 35min, 40min, preferably 30min.

[0014] In the preparation process of the reinforced premix of the present invention, 3-hydroxyphenylphosphatopropionic acid is first used to perform a mixed pretreatment on zirconium silicate and amorphous silicon dioxide. 3-hydroxyphenylphosphatopropionic acid can be compounded on the surfaces of the zirconium silicate and amorphous silicon dioxide to increase the interface bonding between the zirconium silicate and the amorphous silicon dioxide. At the same time, the treated premix of zirconium silicate and amorphous silicon dioxide is added to a polyethylene substrate, which can increase the interaction between the inorganic material and the substrate, thereby improving the success rate of the preparation of the reinforced premix.

[0015] As a further technical solution, the insulating layer further includes phenylphenol compounds.

[0016] As a further technical solution, the phenylphenol compound includes one or both of p-phenylphenol and 2,6-diphenylphenol, preferably 2,6-diphenylphenol.

[0017] The presence of unsaturated double bonds in the styrene-butadiene rubber in the cable insulation layer affects the stability of the styrene-butadiene rubber, which in turn makes the cable insulation layer prone to aging. In order to ensure that the insulation layer of the medical high-frequency transmission type wire and cable has good tensile strength and good aging resistance, 2,6-diphenylphenol is added to the insulation layer of the medical high-frequency transmission type wire and cable of the present invention, and the styrene-butadiene rubber is mixed with 2,6-diphenylphenol. While the styrene-butadiene rubber is stabilized by the π-π stacking effect of 2,6-diphenylphenol and the styrene-butadiene rubber, the phenolic hydroxyl groups in the 2,6-diphenylphenol can provide active sites for capturing free radicals, further improving the stabilizing effect on the styrene-butadiene rubber, thereby improving the aging resistance of the insulation layer of the medical high-frequency transmission type wire and cable.

[0018] As a further technical solution, the amount of the phenylphenol compound added is 8% to 30% of the weight of the styrene-butadiene rubber, for example, it can be 8%, 9%, 10%, 12%, 15%, 18%, 20%, 22%, 25%, 28%, 30%, preferably 10% to 25%.

[0019] In the insulation layer of the medical high-frequency transmission type wire and cable of the present invention, the addition amount of the phenylphenol compound is reasonably optimized. When the addition amount of the phenylphenol compound is 10% to 25% by weight of the styrene-butadiene rubber, the aging resistance of the insulation layer of the high-frequency transmission type wire and cable can be further improved, so that the tensile strength after aging is increased to 25.5 to 26.2 MPa.

[0020] As a further technical solution, the material of the conductor is copper alloy or aluminum alloy, preferably copper alloy; The metal shielding layer is a copper wire braided shielding layer; The outer protective layer is a polyvinyl chloride outer protective layer.

[0021] As a further technical solution, the vulcanizing agent includes one or both of sulfur and dicumyl peroxide, preferably sulfur.

[0022] As a further technical solution, the silane coupling agent includes one or both of silane coupling agent KH-602 and silane coupling agent KH-550.

[0023] During the preparation of the reinforced premix of the present invention, the addition of a silane coupling agent can improve the interaction among zirconium silicate, amorphous silicon dioxide and 3-hydroxyphenylphosphatidyl propionic acid to a certain extent, so as to better prepare the reinforced premix.

[0024] The present invention provides a method for preparing a medical high-frequency transmission type wire and cable, which is used to prepare the medical high-frequency transmission type wire and cable, comprising the following steps: S1, extruding the raw material of the insulating layer and coating it on the outer periphery of the conductor, and vulcanizing it to form an insulating layer; S2. Wrapping the metal shielding layer around the outer periphery of the insulating layer to form a semi-finished cable; S3. Extrude the raw material of the outer sheath and coat it around the outer periphery of the semi-finished cable to obtain a medical high-frequency transmission type wire and cable.

[0025] The present invention also provides a method for preparing a medical high-frequency transmission type wire and cable, which is used to prepare the medical high-frequency transmission type wire and cable, comprising the following steps: S1, after uniformly mixing the phenylphenol substance and styrene-butadiene rubber, adding the remaining components of the insulating layer, blending, extruding and coating the conductor, and vulcanizing to form an insulating layer; S2. Wrapping the metal shielding layer around the outer periphery of the insulating layer to form a semi-finished cable; S3. Extrude the raw material of the outer sheath and coat it around the outer periphery of the semi-finished cable to obtain a medical high-frequency transmission type wire and cable.

[0026] The present invention proposes the application of the medical high-frequency transmission type wire and cable or the medical high-frequency transmission type wire and cable prepared by the preparation method in the field of medical high-frequency signal transmission.

[0027] The working principle and beneficial effects of the present invention are: In the insulating layer of the medical high-frequency transmission type wire and cable of the present invention, a reinforcing premix is ​​prepared with polyethylene, zirconium silicate, amorphous silica, 3-hydroxyphenylphosphoryl propionic acid and a silane coupling agent as raw materials, and is added to the insulating layer, which can effectively improve the tensile strength of the insulating layer of the medical high-frequency transmission type wire and cable. The reinforcing premix is ​​based on polyethylene, and 3-hydroxyphenylphosphoryl propionic acid is introduced therein, which can improve the interaction between the inorganic filler of zirconium silicate and amorphous silica and the organic base material of polyethylene. The presence of polyethylene in the reinforcing premix can have a good binding effect with the main polyethylene base material in the insulating layer, so that the reinforcing premix can be better dispersed in the insulating layer, improving the tensile strength of the insulating layer of the medical high-frequency transmission type wire and cable. In addition, the zirconium silicate and amorphous silica present in the reinforcing premix have a relatively low dielectric constant. In addition to playing a reinforcing role, they can be used as the insulating medium of the high-frequency signal transmission wire, so that the wire and cable meet the requirements of medical high-frequency transmission. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0029] In the following examples and comparative examples, the polyethylene is high-density polyethylene, model DMDA-8008H; the model of styrene-butadiene rubber is SBR1502; the model of ethylene-vinyl acetate copolymer is EVA 180; and the model of amorphous silica is REOLOSIL QS-09, purchased from Shanghai Huanyang Chemical Technology Co., Ltd.

[0030] Example 1 The preparation method of the reinforced premix comprises the following steps: A1. Dissolve 3 parts of 3-hydroxyphenylphosphatopropionic acid in 50 parts of ethanol, add 6 parts of zirconium silicate, 2 parts of amorphous silica and 1 part of silane coupling agent KH-550, stir at a stirring speed of 300 rpm for 30 minutes, concentrate and dry to obtain a premix; A2. Blending 18 parts of polyethylene with the above premix, melting, extruding, and pelletizing to obtain a reinforced premix; A method for preparing a medical high-frequency transmission type wire and cable comprises the following steps: S1. 100 parts of polyethylene, 10 parts of styrene-butadiene rubber, 5 parts of ethylene-vinyl acetate copolymer, 8 parts of reinforcing premix, 8 parts of lithium diethyl hypophosphite, 1.5 parts of antioxidant 1010, 1 part of dioctyl sebacate, and 0.2 parts of sulfur are mixed, extruded and coated on the outer periphery of a copper alloy conductor, and vulcanized to form an insulating layer; S2. Wrap the copper wire braided shielding layer around the outer periphery of the insulation layer to form a semi-finished cable; S3. Extrude and coat the polyvinyl chloride outer sheath on the outer periphery of the semi-finished cable to obtain a medical high-frequency transmission type wire and cable.

[0031] Example 2 The preparation method of the reinforced premix comprises the following steps: A1. Dissolve 6 parts of 3-hydroxyphenylphosphatopropionic acid in 50 parts of ethanol, add 12 parts of zirconium silicate, 6 parts of amorphous silica and 3 parts of silane coupling agent KH-550, stir at a stirring speed of 300 rpm for 30 minutes, concentrate and dry to obtain a premix; A2. Blending 21 parts of polyethylene with the above premix, melting, extruding, and pelletizing to obtain a reinforced premix; A method for preparing a medical high-frequency transmission type wire and cable comprises the following steps: S1. 100 parts of polyethylene, 12 parts of styrene-butadiene rubber, 7 parts of ethylene-vinyl acetate copolymer, 12 parts of reinforcing premix, 10 parts of lithium diethyl hypophosphite, 2 parts of antioxidant 1010, 2 parts of dioctyl sebacate, and 0.4 parts of sulfur are mixed, extruded and coated on the outer periphery of a copper alloy conductor, and vulcanized to form an insulating layer; S2. Wrap the copper wire braided shielding layer around the outer periphery of the insulation layer to form a semi-finished cable; S3. Extrude and coat the polyvinyl chloride outer sheath on the outer periphery of the semi-finished cable to obtain a medical high-frequency transmission type wire and cable.

[0032] Example 3 The preparation method of the reinforced premix comprises the following steps: A1. Dissolve 7 parts of 3-hydroxyphenylphosphatopropionic acid in 50 parts of ethanol, add 13 parts of zirconium silicate, 8 parts of amorphous silica and 3 parts of silane coupling agent KH-550, stir at a stirring speed of 300 rpm for 30 minutes, concentrate and dry to obtain a premix; A2. Blending 24 parts of polyethylene with the above premix, melting, extruding, and pelletizing to obtain a reinforced premix; A method for preparing a medical high-frequency transmission type wire and cable comprises the following steps: S1. 100 parts of polyethylene, 15 parts of styrene-butadiene rubber, 8 parts of ethylene-vinyl acetate copolymer, 16 parts of reinforcing premix, 12 parts of lithium diethyl hypophosphite, 2.5 parts of antioxidant 1010, 3 parts of dioctyl sebacate, and 0.5 part of sulfur are mixed, extruded and coated on the outer periphery of the copper alloy conductor, and vulcanized to form an insulating layer; S2. Wrap the copper wire braided shielding layer around the outer periphery of the insulation layer to form a semi-finished cable; S3. Extrude and coat the polyvinyl chloride outer sheath on the outer periphery of the semi-finished cable to obtain a medical high-frequency transmission type wire and cable.

[0033] Example 4 The only difference between this embodiment and embodiment 2 is that the preparation method of the medical high-frequency transmission type wire and cable in this embodiment is different, specifically: S1. After uniformly mixing 12 parts of styrene-butadiene rubber and 0.96 parts of 2,6-diphenylphenol, 100 parts of polyethylene, 7 parts of ethylene-vinyl acetate copolymer, 12 parts of reinforcing premix, 10 parts of lithium diethyl hypophosphite, 2 parts of antioxidant 1010, 2 parts of dioctyl sebacate, and 0.4 parts of sulfur, the mixture is extruded and coated on the outer periphery of a copper alloy conductor, and vulcanized to form an insulating layer; S2. Wrap the copper wire braided shielding layer around the outer periphery of the insulation layer to form a semi-finished cable; S3. Extrude and coat the polyvinyl chloride outer sheath on the outer periphery of the semi-finished cable to obtain a medical high-frequency transmission type wire and cable.

[0034] Example 5 The only difference between this embodiment and embodiment 4 is that in this embodiment, 1.2 parts of 2,6-diphenylphenol are added.

[0035] Example 6 The only difference between this embodiment and embodiment 4 is that in this embodiment, 1.8 parts of 2,6-diphenylphenol is added.

[0036] Example 7 The only difference between this embodiment and embodiment 4 is that in this embodiment, 3 parts of 2,6-diphenylphenol are added.

[0037] Example 8 The only difference between this embodiment and embodiment 4 is that in this embodiment, 3.6 parts of 2,6-diphenylphenol are added.

[0038] Example 9 The only difference between this embodiment and embodiment 4 is that the preparation method of the medical high-frequency transmission type wire and cable in this embodiment is different, specifically: S1. 12 parts of styrene-butadiene rubber, 0.96 parts of 2,6-diphenylphenol, 100 parts of polyethylene, 7 parts of ethylene-vinyl acetate copolymer, 12 parts of reinforcing premix, 10 parts of lithium diethyl hypophosphite, 2 parts of antioxidant 1010, 2 parts of dioctyl sebacate, and 0.4 parts of sulfur are mixed, extruded and coated on the outer periphery of a copper alloy conductor, and vulcanized to form an insulating layer; S2. Wrap the copper wire braided shielding layer around the outer periphery of the insulation layer to form a semi-finished cable; S3. Extrude and coat the polyvinyl chloride outer sheath on the outer periphery of the semi-finished cable to obtain a medical high-frequency transmission type wire and cable.

[0039] Comparative Example 1 The difference between this comparative example and Example 2 is that the preparation method of the medical high-frequency transmission type wire and cable in this comparative example is different, specifically: S1. 105.25 parts of polyethylene, 12 parts of styrene-butadiene rubber, 7 parts of ethylene-vinyl acetate copolymer, 3 parts of zirconium silicate, 1.5 parts of amorphous silica, 1.5 parts of 3-hydroxyphenylphosphatopropionic acid, 0.75 parts of silane coupling agent KH-550, 10 parts of lithium diethyl hypophosphite, 2 parts of antioxidant 1010, 2 parts of dioctyl sebacate, and 0.4 parts of sulfur are mixed and then extruded and coated on the outer periphery of a copper alloy conductor, and vulcanized to form an insulating layer; S2. Wrap the copper wire braided shielding layer around the outer periphery of the insulation layer to form a semi-finished cable; S3. Extrude and coat the polyvinyl chloride outer sheath on the outer periphery of the semi-finished cable to obtain a medical high-frequency transmission type wire and cable.

[0040] Comparative Example 2 The only difference between this comparative example and Example 2 is that the preparation method of the reinforced premix in this comparative example is different, specifically: A1. Add 12 parts of zirconium silicate, 6 parts of amorphous silicon dioxide and 3 parts of silane coupling agent KH-550 to 50 parts of ethanol, stir at a stirring speed of 300 rpm for 30 minutes, concentrate and dry to obtain a premix; A2. 21 parts of polyethylene and the above premix are blended, melted, extruded, and pelletized to obtain a reinforced premix.

[0041] Experimental Example 1 Three samples were cut from the insulation layer of the medical high-frequency transmission type wires and cables prepared in Examples 1 to 9 and Comparative Examples 1 to 2, and dumbbell specimens with a thickness of 2 mm were prepared according to the method in GB / T 2951.11-2008 "General test methods for insulation and sheathing materials of electric and optical cables Part 11: General test methods for thickness and dimensional measurement - Mechanical properties test". The tensile strength was tested, and the test results are shown in Table 1.

[0042] Table 1 Tensile strength test results of Examples 1 to 9 and Comparative Examples 1 to 2

[0043] As can be seen from Table 1, compared with Comparative Examples 1 to 2, the tensile strength of the insulation layer of the medical high-frequency transmission type wire and cable prepared in Examples 1 to 9 is improved, indicating that the reinforced premix prepared by polyethylene, zirconium silicate, amorphous silica, 3-hydroxyphenylphosphatidyl propionic acid and silane coupling agent is added to the insulation layer of the medical high-frequency transmission type wire and cable, which can effectively improve the tensile strength of the insulation layer of the medical high-frequency transmission type wire and cable.

[0044] Experimental Example 2 Three samples were cut from the insulation layer of the medical high-frequency transmission type wires and cables prepared in Examples 2 and 4 to 9, and dumbbell specimens with a thickness of 2 mm were prepared according to the method in GB / T 2951.11-2008 "General test methods for insulation and sheath materials of electric and optical cables Part 11: General test methods for thickness and dimensional measurement - Mechanical properties test". An aging resistance test was performed, and the tensile strength test after aging was performed according to the above method. The aging resistance test method was an air oven aging method at a temperature of 135°C for 240 h. The test results are shown in Table 2.

[0045] Table 2 Test results of outer sheath tensile strength

[0046] Compared with Example 2 and Example 9, the insulation layer of the medical high-frequency transmission type wire and cable prepared in Examples 4 to 8 has a higher tensile strength retention rate after the heat aging test. According to the tensile strength retention rate = tensile strength after aging / tensile strength before aging × 100%, the tensile strength retention rate of the insulation layer of Examples 4 to 8 reaches more than 92%, indicating that when phenylphenol compounds are added to the insulation layer, the aging resistance of the insulation layer can be improved by pre-mixing the phenylphenol compounds with styrene-butadiene rubber and then adding the remaining components of the insulation layer.

[0047] Experimental Example 3 The dielectric constant and dielectric loss factor of the insulating layer materials of the medical high-frequency transmission type wires and cables prepared in Examples 1 to 3 were tested according to the method in GB / T 1409-2006 "Recommended method for measuring the permittivity and dielectric loss factor of electrical insulating materials at power frequency, audio frequency, and high frequency (including meter wave wavelength)". The test results are shown in Table 3: Table 3 Test results of dielectric constant and dielectric loss factor of Examples 1 to 3

[0048] As can be seen from Table 3, the insulating layer material of the medical high-frequency transmission wire and cable obtained by the present invention has a low dielectric constant and a low dielectric loss factor, which is beneficial to reducing the capacitance loss during power transmission and can meet the requirements of medical high-frequency signal transmission.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A medical high-frequency transmission wire and cable, comprising, from the inside to the outside, a conductor, an insulation layer, a metal shielding layer, and an outer sheath, characterized in that: The insulating layer comprises the following components in parts by weight: 100 parts of first polyethylene, 10-15 parts of styrene-butadiene rubber, 5-8 parts of ethylene-vinyl acetate copolymer, 8-16 parts of reinforcing premix, 8-12 parts of flame retardant, 1.5-2.5 parts of antioxidant, 1-3 parts of plasticizer, and 0.2-0.5 parts of vulcanizing agent; The reinforced premix comprises the following components in parts by weight: 18-24 parts of second polyethylene, 6-13 parts of zirconium silicate, 2-8 parts of amorphous silicon dioxide, 3-7 parts of 3-hydroxyphenylphosphatopropionic acid, and 1-3 parts of a silane coupling agent.

2. A medical high-frequency transmission type wire and cable according to claim 1, characterized in that: The preparation method of the reinforced premix comprises the following steps: A1, dissolving the 3-hydroxyphenylphosphatopropionic acid in ethanol, adding zirconium silicate, amorphous silica and a silane coupling agent, mixing uniformly, concentrating, and drying to obtain a premix; A2. Blending the second polyethylene and the premix, melting, extruding, and granulating to obtain the reinforced premix.

3. A medical high-frequency transmission type wire and cable according to claim 1, characterized in that: The insulating layer also includes phenylphenol compounds.

4. A medical high-frequency transmission type wire and cable according to claim 3, characterized in that: The phenylphenol compound includes one or both of p-phenylphenol and 2,6-diphenylphenol.

5. A medical high-frequency transmission type wire and cable according to claim 3, characterized in that: The added amount of the phenylphenol compound is 8% to 30% of the weight of the styrene-butadiene rubber.

6. A medical high-frequency transmission type wire and cable according to claim 1, characterized in that: The material of the conductor is copper alloy or aluminum alloy; The metal shielding layer is a copper wire braided shielding layer; The outer protective layer is a polyvinyl chloride outer protective layer.

7. The medical high-frequency transmission type wire and cable according to claim 1, characterized in that: The flame retardant includes one or both of a phosphorus-based flame retardant and a nitrogen-based flame retardant; The antioxidant includes one or more of antioxidant 1010, antioxidant 300, and antioxidant 1024; The plasticizer includes one or both of dibutyl phthalate and dioctyl sebacate; The vulcanizing agent includes one or both of sulfur and dicumyl peroxide.

8. The medical high-frequency transmission type wire and cable according to claim 1, characterized in that: The silane coupling agent includes one or both of silane coupling agent KH-602 and silane coupling agent KH-550.

9. A method for preparing a medical high-frequency transmission type wire and cable, for preparing a medical high-frequency transmission type wire and cable according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, extruding the raw material of the insulating layer and coating it on the outer periphery of the conductor, and vulcanizing it to form an insulating layer; S2. Wrapping the metal shielding layer around the outer periphery of the insulating layer to form a semi-finished cable; S3. Extrude the raw material of the outer sheath and coat it around the outer periphery of the semi-finished cable to obtain a medical high-frequency transmission type wire and cable.

10. Use of the medical high-frequency transmission wire and cable according to any one of claims 1 to 8 or the medical high-frequency transmission wire and cable prepared by the preparation method according to claim 9 in the field of medical high-frequency signal transmission.

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