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

Abstract

The application relates to the technical field of electric wire and cable, and discloses a medical high-frequency transmission type electric wire and cable, a preparation method and application thereof. The medical high-frequency transmission type electric wire and cable comprises, from inside to outside, a conductor, an insulation layer, a metal shielding layer and an outer protective layer. The insulation 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 reinforced 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-hydroxyphenyl phosphoropropionic acid and 1-3 parts of silane coupling agent. The above technical scheme solves the problem of poor mechanical property of the insulation layer of the medical high-frequency transmission type electric wire and cable in the related art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric wire and cable, in particular, to a medical high-frequency transmission type electric wire and cable, a preparation method and application thereof. BACKGROUND

[0002] In the modern medical field, the accuracy and stability of high-frequency signal transmission are crucial for the diagnosis effect of medical equipment. The cable used for high-frequency signal transmission usually adopts polyethylene material with small dielectric loss angle and excellent insulation, but the mechanical strength of polyethylene itself is limited, and it may not be able to withstand relatively large mechanical stress during high-frequency signal transmission.

[0003] In order to improve the mechanical properties of the insulating layer of the cable, inorganic reinforcing fillers such as silicon dioxide and calcium carbonate are usually added to the insulating layer. The inorganic reinforcing fillers can improve the mechanical properties of the insulating layer to a certain extent due to their high strength and high modulus. However, in practical application, when the inorganic reinforcing fillers are directly added to the insulating layer base material, there are often problems of poor interface formation and poor dispersion, which can lead to uneven internal structure of the insulating layer, thereby limiting the improvement of the mechanical properties, and further affecting the signal transmission and stability of the cable.

[0004] Therefore, it is necessary to develop a medical high-frequency transmission type electric wire and cable, which has high-frequency signal transmission function and good mechanical properties at the same time, which plays an important role in improving the service life of the medical high-frequency transmission type electric wire and cable and meeting the stability of signal transmission in medical equipment. SUMMARY

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

[0006] The technical scheme of the present application is as follows:

[0007] The present application provides a medical high-frequency transmission type electric wire and cable, which comprises a conductor, an insulating layer, a metal shielding layer and an outer protective layer from inside to outside, and the insulating layer comprises the following components by weight:

[0008] 100 parts of first polyethylene, 10-15 parts of butadiene-styrene 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;

[0009] The reinforcing premix comprises the following components by weight:

[0010] Second polyethylene 18~24 parts, zirconium silicate 6~13 parts, amorphous silica 2~8 parts, 3-hydroxyphenyl phosphor propionic acid 3~7 parts, silane coupling agent 1~3 parts.

[0011] The medical high-frequency transmission type wire cable insulation layer takes polyethylene as a main base material, provides basic insulation performance for the insulation layer, and can prepare the insulation layer with stable internal structure under the action of styrene-butadiene rubber, ethylene-vinyl acetate copolymer, reinforcing premix, flame retardant, antioxidant, plasticizer and vulcanizing agent, so as to ensure the comprehensive performance such as flame retardance and oxidation resistance of the medical high-frequency transmission type wire cable.

[0012] In the medical high-frequency transmission type wire cable insulation layer, the styrene-butadiene rubber has good elasticity, the ethylene-vinyl acetate copolymer has good toughening effect, and the styrene-butadiene rubber, ethylene-vinyl acetate copolymer and polyethylene jointly improve the toughness of the whole insulation layer, thereby improving the overall performance of the medical high-frequency transmission type wire cable insulation layer.

[0013] In the medical high-frequency transmission type wire cable insulation layer, the addition of the flame retardant can improve the thermal stability of the material to a certain extent and reduce the possibility of combustion at high temperature, and the flame retardant can be any one or more conventional flame retardants in the field, for example, can be a phosphorus-based flame retardant, a nitrogen-based flame retardant, wherein the phosphorus-based flame retardant can be lithium diethyl hypophosphite, triphenyl phosphate, tritolyl phosphate, the nitrogen-based flame retardant can be melamine, melamine cyanurate, and preferably lithium diethyl hypophosphite.

[0014] In the medical high-frequency transmission type wire cable insulation layer, the addition of the antioxidant can slow down the oxidation degradation rate of the insulation layer material by capturing free radicals, and the antioxidant can be any one or more conventional antioxidants in the field, for example, can be antioxidant 1024, antioxidant 1010, antioxidant 300, antioxidant 626, antioxidant 1076, preferably antioxidant 1010, antioxidant 300, antioxidant 1024, and more preferably antioxidant 1010.

[0015] In the medical high-frequency transmission type wire cable insulation layer, the addition of the plasticizer can make the components in the insulation layer better compatible, and at the same time make the insulation layer material more easily processed and formed, and the plasticizer can be any one or more conventional plasticizers in the field, for example, can be dioctyl phthalate, dibutyl phthalate, dioctyl sebacate, dioctyl adipate, preferably dibutyl phthalate and dioctyl sebacate, and more preferably dioctyl sebacate.

[0016] As a further technical solution, the preparation method of the reinforcing premix comprises the following steps:

[0017] A1, dissolve the 3-hydroxyphenyl phosphonopyruvic acid in ethanol, add zirconium silicate, amorphous silicon dioxide and silane coupling agent, mix uniformly, concentrate, dry to obtain a premix;

[0018] A2, blend the second polyethylene and the premix, melt, extrude, and granulate to obtain the reinforcing premix.

[0019] As a further technical solution, in step A1, when the mixing is uniform, the stirring method is used, the stirring speed is 250-350 rpm, for example, it can be 250 rpm, 280 rpm, 300 rpm, 320 rpm, 350 rpm, preferably 300 rpm, and the stirring time is 20-40 min, for example, it can be 20 min, 25 min, 30 min, 35 min, 40 min, preferably 30 min.

[0020] In the preparation process of the reinforcing premix, the zirconium silicate and amorphous silicon dioxide are pretreated by mixing with 3-hydroxyphenyl phosphonopyruvic acid, which can complex 3-hydroxyphenyl phosphonopyruvic acid on the surface of zirconium silicate and amorphous silicon dioxide, increase the interfacial bonding between zirconium silicate and amorphous silicon dioxide, and then add the pretreated zirconium silicate and amorphous silicon dioxide premix to the polyethylene base material, which can increase the action of inorganic materials and the base material, thereby improving the success rate of the reinforcing premix preparation.

[0021] As a further technical solution, the insulating layer further comprises a phenyl phenol compound.

[0022] As a further technical solution, the phenyl phenol compound comprises one or both of p-phenyl phenol and 2,6-diphenyl phenol, preferably 2,6-diphenyl phenol.

[0023] The existence of unsaturated double bonds in the butadiene-styrene rubber in the cable insulation layer affects the stability of the butadiene-styrene rubber, and further causes the cable insulation layer to easily age. In order to make the medical high-frequency transmission type wire and cable insulation layer have good tensile strength and good aging resistance, 2,6-diphenyl phenol is added to the medical high-frequency transmission type wire and cable insulation layer, and the butadiene-styrene rubber is mixed and treated with 2,6-diphenyl phenol. The π-π stacking action of 2,6-diphenyl phenol and butadiene-styrene rubber stabilizes the butadiene-styrene rubber, and the phenolic hydroxyl group in 2,6-diphenyl phenol provides active sites for capturing free radicals, further improving the stability of butadiene-styrene rubber, thereby improving the aging resistance of the medical high-frequency transmission type wire and cable insulation layer.

[0024] As a further technical solution, the addition amount of the phenyl phenol compound 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%.

[0025] In the medical high-frequency transmission type wire and cable insulating layer of the application, the addition amount of the phenyl phenol compound is reasonably optimized, and when the addition amount of the phenyl phenol compound is 10% to 25% of the weight of the styrene butadiene rubber, the aging resistance of the high-frequency transmission type wire and cable insulating layer can be further improved, and the tensile strength after aging is increased to 25.5 to 26.2 MPa.

[0026] As a further technical solution, the material of the conductor is copper alloy or aluminum alloy, preferably copper alloy.

[0027] The metal shielding layer is a copper wire braided shielding layer.

[0028] The outer protective layer is a polyvinyl chloride outer protective layer.

[0029] As a further technical solution, the vulcanizing agent includes one or both of sulfur and dicumyl peroxide, preferably sulfur.

[0030] 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.

[0031] In the preparation process of the reinforced premix, the addition of the silane coupling agent can improve the interaction of zirconium silicate, amorphous silicon dioxide and 3-hydroxyphenyl phosphoropropionic acid to some extent, so as to better prepare the reinforced premix.

[0032] The application provides a preparation method of a medical high-frequency transmission type wire and cable.

[0033] S1, extruding and coating the raw material of the insulating layer around the conductor, vulcanizing to form an insulating layer;

[0034] S2, winding the metal shielding layer around the insulating layer to form a cable semi-finished product;

[0035] S3, extruding and coating the raw material of the outer protective layer around the cable semi-finished product to obtain a medical high-frequency transmission type wire and cable.

[0036] The application also provides a preparation method of a medical high-frequency transmission type wire and cable.

[0037] S1, the phenyl phenol substance and styrene butadiene rubber are mixed uniformly, then the rest components in the insulating layer are added, blended, extruded to coat the conductor periphery, vulcanized to form the insulating layer;

[0038] S2, the metal shielding layer is wrapped around the insulating layer periphery to form a cable semi-finished product;

[0039] S3, the outer sheath raw material is extruded to coat the cable semi-finished product periphery to obtain the medical high-frequency transmission type wire cable.

[0040] The application provides application of the medical high-frequency transmission type wire cable or the medical high-frequency transmission type wire cable prepared by the preparation method in the medical high-frequency signal transmission field.

[0041] The working principle and beneficial effects of the application are as follows:

[0042] In the application, the insulating layer of the medical high-frequency transmission type wire cable is prepared from polyethylene, zirconium silicate, amorphous silicon dioxide, 3-hydroxyphenyl phosphoropropionic acid and a silane coupling agent as raw materials to obtain a reinforced premix which is added to the insulating layer, so that the tensile strength of the insulating layer of the medical high-frequency transmission type wire cable can be effectively improved. The reinforced premix takes polyethylene as a base material, and the 3-hydroxyphenyl phosphoropropionic acid is introduced into the base material, so that the interaction between the zirconium silicate and amorphous silicon dioxide inorganic fillers and the polyethylene organic base material can be improved. The existence of the polyethylene in the reinforced premix can also have good bonding with the polyethylene main base material in the insulating layer, so that the reinforced premix can be better dispersed in the insulating layer, and the tensile strength of the insulating layer of the medical high-frequency transmission type wire cable can be improved. In addition, the zirconium silicate and amorphous silicon dioxide in the reinforced premix have relatively low dielectric constants, and can be used as insulating media of the high-frequency signal transmission wire in addition to the reinforcing effect, so that the wire cable can meet the requirements of medical high-frequency transmission. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the application will be clearly and completely described below in combination with the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor also relate to the protection scope of the application.

[0044] In the following examples and comparative examples, the polyethylene is high-density polyethylene with the model number DMDA-8008H; the styrene butadiene rubber has the model number SBR1502; the ethylene-vinyl acetate copolymer has the model number EVA 180; and the amorphous silicon dioxide has the model number REOLOSIL QS-09 and is purchased from Shanghai Huanyang Chemical Technology Co., Ltd.

[0045] Example 1

[0046] The preparation method of the reinforced premix includes the following steps:

[0047] A1, 3 parts of 3-hydroxyphenyl phosphonopropionic acid are dissolved in 50 parts of ethanol, 6 parts of zirconium silicate, 2 parts of amorphous silica and 1 part of silane coupling agent KH-550 are added, stirring at a stirring speed of 300 rpm for 30 min, concentrating, drying to obtain a premix;

[0048] A2, 18 parts of polyethylene and the above premix are blended, melted, extruded and granulated to obtain a reinforced premix;

[0049] A preparation method of a medical high-frequency transmission type wire cable includes the following steps:

[0050] S1, 100 parts of polyethylene, 10 parts of butadiene-styrene rubber, 5 parts of ethylene-vinyl acetate copolymer, 8 parts of reinforced premix, 8 parts of lithium diethyl phosphinate, 1.5 parts of antioxidant 1010, 1 part of dioctyl sebacate, and 0.2 parts of sulfur are blended, and then extruded to coat the periphery of a copper alloy conductor, vulcanized to form an insulation layer;

[0051] S2, a copper wire braided shielding layer is wrapped around the periphery of the insulation layer to form a cable semi-finished product;

[0052] S3, a polyvinyl chloride outer protective layer is extruded to coat the periphery of the cable semi-finished product to obtain a medical high-frequency transmission type wire cable.

[0053] Example 2

[0054] The preparation method of the reinforced premix includes the following steps:

[0055] A1, 6 parts of 3-hydroxyphenyl phosphonopropionic acid are dissolved in 50 parts of ethanol, 12 parts of zirconium silicate, 6 parts of amorphous silica and 3 parts of silane coupling agent KH-550 are added, stirring at a stirring speed of 300 rpm for 30 min, concentrating, drying to obtain a premix;

[0056] A2, 21 parts of polyethylene and the above premix are blended, melted, extruded and granulated to obtain a reinforced premix;

[0057] A preparation method of a medical high-frequency transmission type wire cable includes the following steps:

[0058] S1, 100 parts of polyethylene, 12 parts of butadiene-styrene rubber, 7 parts of ethylene-vinyl acetate copolymer, 12 parts of reinforced premix, 10 parts of lithium diethyl phosphinate, 2 parts of antioxidant 1010, 2 parts of dioctyl sebacate, and 0.4 parts of sulfur are blended, and then extruded to coat the periphery of a copper alloy conductor, vulcanized to form an insulation layer;

[0059] S2, a copper wire braided shielding layer is wrapped around the periphery of the insulating layer to form a cable semi-finished product;

[0060] S3, a polyvinyl chloride outer protective layer is extrusion coated on the periphery of the cable semi-finished product to obtain the medical high-frequency transmission type wire cable.

[0061] Example 3

[0062] The preparation method of the reinforcing premix includes the following steps:

[0063] A1, 7 parts of 3-hydroxyphenyl phosphonyl propionic acid are dissolved in 50 parts of ethanol, 13 parts of zirconium silicate, 8 parts of amorphous silicon dioxide and 3 parts of silane coupling agent KH-550 are added, stirred at a stirring speed of 300 rpm for 30 min, concentrated, dried to obtain a premix;

[0064] A2, 24 parts of polyethylene and the above premix are blended, melted, extruded and granulated to obtain a reinforcing premix;

[0065] A preparation method of a medical high-frequency transmission type wire cable includes the following steps:

[0066] S1, 100 parts of polyethylene, 15 parts of butadiene-styrene rubber, 8 parts of ethylene-vinyl acetate copolymer, 16 parts of reinforcing premix, 12 parts of lithium diethyl phosphite, 2.5 parts of antioxidant 1010, 3 parts of dioctyl sebacate, and 0.5 parts of sulfur are blended, and then extrusion coated on the periphery of a copper alloy conductor, vulcanized to form an insulating layer;

[0067] S2, a copper wire braided shielding layer is wrapped around the periphery of the insulating layer to form a cable semi-finished product;

[0068] S3, a polyvinyl chloride outer protective layer is extrusion coated on the periphery of the cable semi-finished product to obtain the medical high-frequency transmission type wire cable.

[0069] Example 4

[0070] The difference between this embodiment and example 2 is only that the preparation method of the medical high-frequency transmission type wire cable in this embodiment is different, specifically:

[0071] S1, 12 parts of butadiene-styrene rubber and 0.96 parts of 2,6-diphenyl phenol are uniformly mixed, then 100 parts of polyethylene, 7 parts of ethylene-vinyl acetate copolymer, 12 parts of reinforcing premix, 10 parts of lithium diethyl phosphite, 2 parts of antioxidant 1010, 2 parts of dioctyl sebacate, and 0.4 parts of sulfur are blended, and then extrusion coated on the periphery of a copper alloy conductor, vulcanized to form an insulating layer;

[0072] S2, a copper wire braided shielding layer is wrapped around the periphery of the insulating layer to form a cable semi-finished product;

[0073] S3, extruding a polyvinyl chloride outer protective layer on the periphery of the cable semi-finished product to obtain the medical high-frequency transmission type wire and cable.

[0074] Example 5

[0075] The difference between this example and Example 4 is that in this example, 2.6-diphenyl phenol is added in an amount of 1.2 parts.

[0076] Example 6

[0077] The difference between this example and Example 4 is that in this example, 2.6-diphenyl phenol is added in an amount of 1.8 parts.

[0078] Example 7

[0079] The difference between this example and Example 4 is that in this example, 2.6-diphenyl phenol is added in an amount of 3 parts.

[0080] Example 8

[0081] The difference between this example and Example 4 is that in this example, 2.6-diphenyl phenol is added in an amount of 3.6 parts.

[0082] Example 9

[0083] The difference between this example and Example 4 is that in this example, the preparation method of the medical high-frequency transmission type wire and cable is different, specifically:

[0084] S1, blending 12 parts of styrene-butadiene rubber, 0.96 parts of 2,6-diphenyl phenol, 100 parts of polyethylene, 7 parts of ethylene-vinyl acetate copolymer, 12 parts of reinforcing premix, 10 parts of lithium diethyl phosphite, 2 parts of antioxidant 1010, 2 parts of dioctyl sebacate, 0.4 parts of sulfur, and then extruding and coating on the periphery of the copper alloy conductor, vulcanizing to form an insulation layer;

[0085] S2, winding a copper wire braided shielding layer around the periphery of the insulation layer to form a cable semi-finished product;

[0086] S3, extruding a polyvinyl chloride outer protective layer on the periphery of the cable semi-finished product to obtain the medical high-frequency transmission type wire and cable.

[0087] Comparative Example 1

[0088] The difference between this example and Example 2 is that in this example, the preparation method of the medical high-frequency transmission type wire and cable is different, specifically:

[0089] S1, 105.25 parts of polyethylene, 12 parts of butadiene-styrene rubber, 7 parts of ethylene-vinyl acetate copolymer, 3 parts of zirconium silicate, 1.5 parts of amorphous silica, 1.5 parts of 3-hydroxyphenyl phosphonic acid, 0.75 parts of silane coupling agent KH-550, 10 parts of lithium diethyl phosphite, 2 parts of antioxidant 1010, 2 parts of dioctyl sebacate, 0.4 parts of sulfur are blended, and then extruded to coat the periphery of a copper alloy conductor, vulcanized to form an insulation layer;

[0090] S2, a copper wire braided shielding layer is wrapped around the periphery of the insulation layer to form a cable semi-finished product;

[0091] S3, a polyvinyl chloride outer protective layer is extruded to coat the periphery of the cable semi-finished product to obtain a medical high-frequency transmission type wire and cable.

[0092] Comparative Example 2

[0093] The difference between this comparative example and Example 2 is only that the preparation method of the reinforcing premix in this comparative example is different, specifically:

[0094] A1, 12 parts of zirconium silicate, 6 parts of amorphous silica, and 3 parts of silane coupling agent KH-550 are added to 50 parts of ethanol, stirred at a stirring speed of 300 rpm for 30 min, concentrated, and dried to obtain a premix;

[0095] A2, 21 parts of polyethylene and the above premix are blended, melted, extruded, and granulated to obtain a reinforcing premix.

[0096] Experimental Example 1

[0097] Three samples are cut from the insulation layer of the medical high-frequency transmission type wire and cable prepared in Examples 1-9 and Comparative Examples 1-2, prepared into dumbbell test pieces with a thickness of 2 mm according to the method in GB / T 2951.11-2008 "Cables and optical fibers-Insulation and sheath materials-General test methods-Part 11:General test methods-Thickness and outer dimension measurement-Mechanical property test", and tested for tensile strength. The test results are shown in Table 1.

[0098] Table 1: Tensile strength test results of Examples 1-9 and Comparative Examples 1-2

[0099]

[0100] As can be seen from Table 1, compared with Comparative Examples 1-2, the tensile strength of the insulation layer of the medical high-frequency transmission type wire and cable prepared in Examples 1-9 is improved, indicating that the use of polyethylene, zirconium silicate, amorphous silica, 3-hydroxyphenyl phosphonic acid, and silane coupling agent to prepare a reinforcing premix and adding it to the insulation layer of the medical high-frequency transmission type wire and cable can effectively improve the tensile strength of the insulation layer of the medical high-frequency transmission type wire and cable.

[0101] Experimental Example 2

[0102] Three samples were cut from the insulating layer of the medical high-frequency transmission type electric wire cable prepared in Example 2, Examples 4-9, respectively, and then prepared into dumbbell test pieces with a thickness of 2 mm according to the method in GB / T 2951.11-2008 "Cables and optical cables - Insulation and sheath materials - General test methods - Part 11: General test methods - Measurement of thickness and outer dimensions - Mechanical property tests", and then subjected to aging resistance test, and the tensile strength after aging was tested according to the above method, wherein the aging resistance test method was air oven aging method, the temperature was 135℃, and the time was 240h, and the test results are shown in Table 2.

[0103] Table 2 Tensile strength test results of outer sheath layer

[0104]

[0105] Compared with Example 2 and Example 9, the tensile strength retention rate of the insulating layer of the medical high-frequency transmission type electric wire cable prepared in Examples 4-8 was higher after heat aging experiment, according to the tensile strength retention rate = tensile strength after aging / tensile strength before aging x 100%, the tensile strength retention rate of the insulating layer of Examples 4-8 reached more than 92%, which indicated that when the phenyl phenol compound was added to the insulating layer, and the phenyl phenol compound was pre-mixed with the styrene-butadiene rubber and then the remaining components of the insulating layer were added, the aging resistance of the insulating layer could be improved.

[0106] Experimental Example 3

[0107] The dielectric constant and dielectric loss factor of the insulating layer material of the medical high-frequency transmission type electric wire cable prepared in Examples 1-3 were tested according to the method in GB / T 1409-2006 "Recommended methods for measuring the permittivity and dielectric loss factor of electrical insulating materials at power frequencies, audio frequencies and high frequencies (including wavelengths of meter waves)", and the test results are shown in Table 3:

[0108] Table 3 Test results of dielectric constant and dielectric loss factor of Examples 1-3

[0109]

[0110] As can be seen from Table 3, the insulating layer material of the medical high-frequency transmission type electric wire cable prepared in the present application has a lower dielectric constant and a lower dielectric loss factor, which is beneficial to reduce the capacitive loss in the process of power transmission, and can meet the requirements of medical high-frequency signal transmission.

[0111] The above merely preferred embodiments of the present application are not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A medical high-frequency transmission electric wire cable comprising, from the inside to the outside, a conductor, an insulating layer, a metal shielding layer, and an outer sheath, characterized in that, The insulation layer comprises the following components 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, 0.2-0.5 parts of vulcanizing agent; The reinforcing premix comprises the following components by weight: 18-24 parts of second polyethylene, 6-13 parts of zirconium silicate, 2-8 parts of amorphous silica, 3-7 parts of 3-hydroxyphenyl phosphonopropionic acid, 1-3 parts of silane coupling agent; The preparation method of the reinforcing premix comprises the following steps: A1, dissolving the 3-hydroxyphenyl phosphonopropionic acid in ethanol, adding zirconium silicate, amorphous silica and silane coupling agent, mixing uniformly, concentrating, drying to obtain a premix; A2, blending the second polyethylene and the premix, melting, extruding, granulating to obtain the reinforcing premix.

2. The medical high-frequency transmission electric wire cable according to claim 1, wherein The insulation layer further comprises a phenyl phenol compound.

3. The medical high-frequency transmission electric wire cable according to claim 2, wherein The phenyl phenol compound comprises one or both of p-phenylphenol and 2,6-diphenylphenol.

4. The medical high-frequency transmission electric wire cable according to claim 2, wherein The addition amount of the phenyl phenol compound is 8%-30% of the weight of the styrene-butadiene rubber.

5. The medical high-frequency transmission electric wire cable according to claim 1, wherein 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.

6. The medical high-frequency transmission electric wire cable according to claim 1, wherein The flame retardant comprises one or both of phosphorus-based flame retardant and nitrogen-based flame retardant; The antioxidant comprises one or more of antioxidant 1010, antioxidant 300 and antioxidant 1024; The plasticizer comprises one or both of dibutyl phthalate and dioctyl sebacate; The vulcanizing agent comprises one or both of sulfur and dicumyl peroxide.

7. The medical high-frequency transmission electric wire cable according to claim 1, wherein The silane coupling agent comprises one or both of silane coupling agent KH-602 and silane coupling agent KH-550.

8. A method for producing a medical high-frequency transmission electric wire cable, for producing a medical high-frequency transmission electric wire cable as claimed in any one of claims 1 to 7, characterized by, The method comprises the following steps: S1, extruding the raw material of the insulation layer around the conductor, vulcanizing to form an insulation layer; S2, winding the metal shielding layer around the periphery of the insulation layer to form a cable semi-finished product; S3, extruding the raw material of the outer protective layer around the periphery of the cable semi-finished product to obtain a medical high-frequency transmission type wire cable.

9. The medical high-frequency transmission type wire cable according to any one of claims 1-7 or prepared by the preparation method of claim 8 for use in the field of medical high-frequency signal transmission.

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