阅读说明：本技术 一种超柔介质软波导及其制备方法 (Super-soft medium flexible waveguide and preparation method thereof ) 是由 薛秉轩 于 2021-06-03 设计创作，主要内容包括：本申请提供了一种超柔介质软波导及其制备方法,属于软波导技术领域。介质填充体、绕包波导管、编织加强层和耐高温外护套从内之外依次设置构成了软波导组件,优化介质填充体组成,使得波导管内无需内部充气,保证了内部干燥,降低维护难度和成本；铜扁带或镀银铜扁带螺旋绕包在低损耗介质填充体上的制备工艺,为波导管提供了可弯曲的柔软特性,降低了敷设难度和敷设成本,拓宽了波导的应用范围；低损耗介质填充体的挤出制备工艺,提升了生产效率,减少了生产难度和成本；编织加强层和耐高温外护套的使用,不仅增加了柔性波导的机械物理性能,同时提供了更宽泛的工作温度范围,适合推广使用。(The application provides an ultra-soft medium flexible waveguide and a preparation method thereof, and belongs to the technical field of flexible waveguides. The medium filling body, the wrapped waveguide tube, the woven reinforcing layer and the high-temperature-resistant outer sheath are sequentially arranged from inside to outside to form a soft waveguide component, and the composition of the medium filling body is optimized, so that the interior of the waveguide tube is not required to be inflated, the interior is ensured to be dry, and the maintenance difficulty and cost are reduced; the preparation process of spirally wrapping the copper flat belt or the silver-plated copper flat belt on the low-loss dielectric filling body provides a flexible soft characteristic for the waveguide tube, reduces laying difficulty and laying cost, and widens the application range of the waveguide; the extrusion preparation process of the low-loss dielectric filling body improves the production efficiency and reduces the production difficulty and cost; the use of the woven reinforcing layer and the high-temperature-resistant outer sheath not only increases the mechanical and physical properties of the flexible waveguide, but also provides a wider working temperature range, and is suitable for popularization and use.)

1. An ultra-soft dielectric waveguide comprising

The flexible waveguide assembly (100) comprises a medium filling body (110), a wrapped waveguide tube (120), a woven reinforcing layer (130) and a high-temperature-resistant outer sheath (140), wherein the wrapped waveguide tube (120) is spirally wound on the outer surface of the medium filling body (110), the woven reinforcing layer (130) is woven in a net shape to be wrapped on the outer wall of the wrapped waveguide tube (120), and the high-temperature-resistant outer sheath (140) is wrapped on the outer wall of the woven reinforcing layer (130).

2. An ultra-soft dielectric waveguide as claimed in claim 1, wherein the dielectric filling body (110) is low density polytetrafluoroethylene.

3. An ultra-soft dielectric waveguide as claimed in claim 2, wherein the low density polytetrafluoroethylene is a low density polytetrafluoroethylene suspension powder.

4. The ultra-soft dielectric waveguide of claim 1, wherein the wrapped waveguide (120) is made of one of a copper ribbon or a silver-plated copper ribbon.

5. An ultra-soft dielectric waveguide as claimed in claim 1, wherein the braided reinforcing layer (130) is one of tin plated wire or silver plated braided wire.

6. An ultra-soft waveguide as claimed in claim 1, wherein the high temperature resistant outer sheath (140) is made of one of PVE, PE, FEP or PFA.

7. An ultra-soft dielectric waveguide as claimed in claim 1, wherein the dielectric filling body (110) is formed by extrusion molding with an oval or rectangular cross-section.

8. A method for preparing an ultra-soft dielectric waveguide according to any one of claims 1 to 7, comprising the steps of:

step A: preparing a medium filling body (110), wherein in the preparation process, low-density polytetrafluoroethylene suspension powder and ISOPAR solvent oil are mixed according to the proportion, and the mixture is prepared and molded by a pushing mold with an oval or rectangular cross section by using a pasty extrusion processing mode; then, the solvent oil is fully volatilized in a high-temperature sintering furnace at the temperature of 170-200 ℃ to obtain a low-dielectric-constant low-loss high-and-low-temperature-resistant medium filling body (110);

and B: preparing a wrapped waveguide tube (120), namely spirally winding a copper flat belt or a silver-plated copper flat belt on the outer wall of the low-dielectric-constant low-loss high and low temperature resistant medium filling body (110), and finishing the preparation of the wrapped waveguide tube (120);

and C: coating the braided reinforcing layer (130), namely alternately braiding and coating the tinned wires or the silver-plated copper wires on the outer wall of the wrapped waveguide tube (120) to finish the preparation of the braided reinforcing layer (130);

step D: and extruding and molding on the outer wall of the woven reinforced layer (130) and coating a high-temperature resistant outer sheath (140).

Technical Field

The application relates to the field of flexible waveguides, in particular to an ultra-flexible medium flexible waveguide and a preparation method thereof.

Background

The inventor finds that the traditional corrugated pipe waveguide has certain defects, and when the corrugated pipe waveguide works in practical application, the corrugated pipe waveguide is greatly influenced by the temperature difference change of the working environment, and the sunlight irradiates in the daytime and the temperature rises; the temperature difference between day and night is changed rapidly due to the temperature reduction or rainfall at night, a large air pressure difference is formed, external water vapor enters the waveguide tube easily, and therefore the attenuation and reflection performance of the waveguide tube are affected. Therefore, regular maintenance of the dry air inflator device is required to ensure in-line drying. And the traditional waveguide tube is difficult to bend, so the problems of high installation difficulty, high maintenance difficulty, metal waveguide tube aging and the like often occur, and the laying cost and the maintenance cost are increased.

Meanwhile, in the existing preparation process of the metal waveguide tube, the waveguide copper tube with the required diameter can be formed by forming the tube by a plurality of forming dies, processing the joint by adopting an argon arc welding process and sizing by a sizing die, so that the production process is complicated, the production cost is difficult to reduce, and how to invent the super-soft medium soft waveguide and the preparation method thereof to solve the problems becomes a problem to be solved urgently by technical personnel in the field.

Disclosure of Invention

In order to make up for the above deficiencies, the present application provides an ultra-soft dielectric flexible waveguide and a method for manufacturing the same, which aims to solve the above problems in the background art.

In a first aspect, the embodiment of the application provides an ultra-soft medium flexible waveguide, including the flexible waveguide subassembly, the flexible waveguide subassembly includes the medium obturator, winds the package waveguide pipe, weaves enhancement layer and high temperature resistant oversheath, wind package waveguide pipe spiral winding at the medium obturator surface, weave the enhancement layer and become netted the weaving cladding in the package waveguide pipe outer wall, the coating of high temperature resistant oversheath is in the outer wall of weaving the enhancement layer.

In a specific embodiment, the media pack is low density polytetrafluoroethylene.

In a specific embodiment, the low density polytetrafluoroethylene is a low density polytetrafluoroethylene suspension powder.

In a specific embodiment, the wrapped waveguide is made of one of a copper flat belt or a silver-plated copper flat belt.

In a specific embodiment, the material of the woven reinforcing layer is one of tinned wires or silver-plated woven wires.

In a specific embodiment, the material of the high temperature resistant outer sheath is one of PVE, PE, FEP or PFA.

In a specific embodiment, the medium filling body is prepared and molded by an extrusion die with an oval or rectangular cross section.

In a second aspect, an embodiment of the present application provides a method for preparing an ultra-soft dielectric flexible waveguide, including the following steps:

step A: preparing a medium filling body, wherein in the preparation process, low-density polytetrafluoroethylene suspension powder and ISOPAR solvent oil are mixed according to a ratio, and are prepared and molded by a pushing mold with an oval or rectangular cross section by using a pasty extrusion processing mode; then, the solvent oil is fully volatilized in a high-temperature sintering furnace at the temperature of 170-200 ℃ to obtain a low-dielectric-constant low-loss high-and-low-temperature-resistant medium filling body;

and B: preparing a wrapped waveguide tube, namely spirally winding a copper flat belt or a silver-plated copper flat belt on the outer wall of the low-dielectric-constant low-loss high and low temperature resistant medium filler, and finishing the preparation of the wrapped waveguide tube;

and C: coating the braided reinforcing layer, namely, alternately braiding and coating the tinned wire or the silvered copper wire on the outer wall of the wrapped waveguide tube to finish the preparation of the braided reinforcing layer;

step D: and extruding on the outer wall of the woven reinforcing layer, and coating a high-temperature-resistant outer sheath.

Has the advantages that: according to the super-soft medium flexible waveguide and the preparation method thereof, the medium filling body, the wrapped waveguide tube, the woven reinforcing layer and the high-temperature-resistant outer sheath are sequentially arranged from inside to outside to form the flexible waveguide assembly, the composition of the medium filling body is optimized, and the medium filling body is made of low-density polytetrafluoroethylene, so that the interior of the waveguide tube does not need to be inflated, the interior is guaranteed to be dry, and the maintenance difficulty and cost are reduced; the preparation process of spirally wrapping the copper flat belt or the silver-plated copper flat belt on the low-loss dielectric filling body provides a flexible soft characteristic for the waveguide tube, reduces laying difficulty and laying cost, and widens the application range of the waveguide; the extrusion preparation process of the low-loss dielectric filling body improves the production efficiency and reduces the production difficulty and cost; the use of the woven reinforcing layer and the high-temperature-resistant outer sheath not only increases the mechanical and physical properties of the flexible waveguide, but also provides a wider working temperature range, and is suitable for popularization and use.

Drawings

In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic diagram of an ultra-soft dielectric waveguide structure provided in an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view A-A of the medium-filled structure of FIG. 1 with an oval cross-section according to an embodiment of the present disclosure;

fig. 3 is a schematic sectional structural diagram of a-a when the cross section of the dielectric filling body in fig. 1 is rectangular according to an embodiment of the present disclosure.

In the figure: 100-a soft waveguide assembly; 110-a dielectric fill; 120-wrapping a waveguide tube; 130-weaving a reinforcing layer; 140-high temperature resistant outer sheath.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1

Referring to fig. 1, 2 and 3, the present application provides an ultra-soft dielectric flexible waveguide, which includes a flexible waveguide assembly 100, the flexible waveguide assembly 100 includes a dielectric filling body 110, a lapped waveguide tube 120, a braided reinforcement layer 130 and a high temperature resistant outer sheath 140, the lapped waveguide tube 120 is spirally wound on the outer surface of the dielectric filling body 110, the braided reinforcement layer 130 is braided and coated on the outer wall of the lapped waveguide tube 120 in a mesh manner, and the high temperature resistant outer sheath 140 is coated on the outer wall of the braided reinforcement layer 130.

In some specific embodiments, the media pack 110 is low density polytetrafluoroethylene, which is a low density polytetrafluoroethylene suspension powder. It should be noted that, in the extrusion molding process of the medium filler, ISOPAR solvent oil in a certain proportion needs to be mixed as an extrusion aid, so that the polytetrafluoroethylene suspension powder is easier to be extruded and molded in the process (the raw material components of the low-density polytetrafluoroethylene suspension powder in the mixing process account for 70%, and the raw material components of the ISOPAR solvent oil account for 30%); and then the solvent oil is fully volatilized in a high-temperature sintering furnace at the temperature of 170-200 ℃ to obtain the low-dielectric-constant low-loss high-and-low-temperature-resistant medium filling body 110.

By the medium filling body 110 arranged on the waveguide tube, low-density polytetrafluoroethylene suspension powder is used as a material of the low-dielectric-constant low-loss medium filling body, and can be used as a support of the wrapped waveguide tube, so that the wrapped waveguide tube is stable in structure and has the characteristic of softness; in addition, the dielectric constant of the low-density polytetrafluoroethylene is 1.6-1.8, and the material of the filler has an ultralow dielectric constant, so that the waveguide has very low transmission loss; the use of the low dielectric constant filler prevents various dirt and moist gas from entering the waveguide;

in addition, this dielectric filling body 110 still has resistant high low temperature characteristic, and the use of low dielectric constant low loss resistant high low temperature dielectric filling body and oversheath material makes flexible exempt from to aerify the waveguide and have resistant high low temperature characteristic simultaneously, and this dielectric filling body 110 can normal operating range: the temperature is-55 ℃ to +200 ℃, so that the reliability of the flexible low-dielectric-constant low-loss high and low temperature resistant waveguide in working environments with different temperature conditions is ensured.

In this embodiment, the wrapped waveguide 120 is made of one of a copper flat tape or a silver-plated copper flat tape. Through last design around package waveguide pipe 120, adopt winding copper bandlet or silvered copper bandlet on low dielectric constant low-loss dielectric filler outer wall, form the waveguide pipe around the package formula for replace traditional ripple waveguide pipe and crimping type conductor, make the component structure of waveguide pipe and low dielectric constant low-loss dielectric filler not only have excellent electric conductivity, obtain more outstanding bending characteristic simultaneously. In practical application, the bending is easier, the device is suitable for laying in narrow space, the laying cost can be saved, and the laying efficiency can be improved.

It should be noted that the thickness of the copper strap or the silver-plated copper strap is controlled between 0.04mm and 0.08mm, when the silver-plated copper wire is selected for weaving, the working temperature is 85 ℃ below 200 ℃, and when the tin-plated wire is selected for weaving, the working temperature is below 85 ℃.

In a specific embodiment, the braided reinforcement layer 130 is made of one of tin-plated wire or silver-plated braided wire. Through the design of the upper weaving reinforcing layer 130, the electromagnetic shielding function of the ultra-soft medium flexible waveguide can be improved while the tensile strength and the compressive strength of the wrapped waveguide tube are increased.

The high temperature resistant outer sheath 140 is made of one of PVE, PE, FEP or PFA. The outer sheath is made of PVE, PE, FEP or PFA with good corrosion resistance and insulation, FEP and PFA can be used in a working environment of-55 ℃ to +200 ℃ and PVC and PE can be used in a working environment of-20 ℃ to +85 ℃ when the high-temperature-resistant outer sheath is used, and the actual material of the high-temperature-resistant outer sheath 140 is selected according to actual requirements, so that detailed neoplasms are omitted.

In a specific embodiment, the dielectric filling body 110 is formed by extrusion molding with an oval or rectangular cross section, and the oval and rectangular dielectric filling bodies 110 are shown in fig. 2 and 3, respectively. The low-dielectric-constant low-loss high and low temperature resistant dielectric filling body is an extrusion die with different sizes and shapes according to the filling requirements of different sizes.

The embodiment of the application also provides a preparation method of the super-soft medium flexible waveguide, which comprises the following steps:

step A: preparing a medium filling body 110, wherein in the preparation process, low-density polytetrafluoroethylene suspension powder and ISOPAR solvent oil are mixed according to a ratio, and are prepared and molded through a pushing mold with an oval or rectangular cross section by using a pasty extrusion processing mode; then, through a high-temperature sintering furnace, the solvent oil is fully volatilized within the temperature range of 170-200 ℃ to obtain the low-dielectric-constant low-loss high-and-low temperature-resistant medium filler 110;

and B: preparing the wrapped waveguide tube 120, namely spirally winding a copper flat belt or a silver-plated copper flat belt on the outer wall of the low-dielectric-constant low-loss high and low temperature resistant medium filler 110, and completing the preparation of the wrapped waveguide tube 120;

and C: coating the braided reinforcement layer 130, namely, alternately braiding and coating the tinned wires or the silver-plated copper wires on the outer wall of the wrapped waveguide tube 120 to complete the preparation of the braided reinforcement layer 130;

step D: the outer wall of the braided reinforcing layer 130 is extruded and covered with a high temperature resistant outer sheath 140.

Example 2

Referring to fig. 1, 2 and 3, the present application provides an ultra-soft dielectric flexible waveguide, which includes a flexible waveguide assembly 100, the flexible waveguide assembly 100 includes a dielectric filling body 110, a lapped waveguide tube 120, a braided reinforcement layer 130 and a high temperature resistant outer sheath 140, the lapped waveguide tube 120 is spirally wound on the outer surface of the dielectric filling body 110, the braided reinforcement layer 130 is braided and coated on the outer wall of the lapped waveguide tube 120 in a mesh manner, and the high temperature resistant outer sheath 140 is coated on the outer wall of the braided reinforcement layer 130.

In some specific embodiments, the media pack 110 is low density polytetrafluoroethylene, which is a low density polytetrafluoroethylene suspension powder. It should be noted that, in the extrusion molding process of the medium filler, a certain proportion of ISOPAR solvent oil needs to be mixed as an extrusion aid, so that the polytetrafluoroethylene suspension powder is easier to be extruded and molded in the process (the raw material components of the low-density polytetrafluoroethylene suspension powder in the mixing process account for 71%, and the raw material components of the ISOPAR solvent oil account for 29%); and then the solvent oil is fully volatilized in a high-temperature sintering furnace at the temperature of 170-200 ℃ to obtain the low-dielectric-constant low-loss high-and-low-temperature-resistant medium filling body 110.

By the medium filling body 110 arranged on the waveguide tube, low-density polytetrafluoroethylene suspension powder is used as a material of the low-dielectric-constant low-loss medium filling body, and can be used as a support of the wrapped waveguide tube, so that the wrapped waveguide tube is stable in structure and has the characteristic of softness; in addition, the dielectric constant of the low-density polytetrafluoroethylene is 1.6-1.8, and the material of the filler has an ultralow dielectric constant, so that the waveguide has very low transmission loss; the use of the low dielectric constant filler prevents various dirt and moist gas from entering the waveguide;

in addition, this dielectric filling body 110 still has resistant high low temperature characteristic, and the use of low dielectric constant low loss resistant high low temperature dielectric filling body and oversheath material makes flexible exempt from to aerify the waveguide and have resistant high low temperature characteristic simultaneously, and this dielectric filling body 110 can normal operating range: the temperature is-55 ℃ to +200 ℃, so that the reliability of the flexible low-dielectric-constant low-loss high and low temperature resistant waveguide in working environments with different temperature conditions is ensured.

In this embodiment, the wrapped waveguide 120 is made of one of a copper flat tape or a silver-plated copper flat tape. Through last design around package waveguide pipe 120, adopt winding copper bandlet or silvered copper bandlet on low dielectric constant low-loss dielectric filler outer wall, form the waveguide pipe around the package formula for replace traditional ripple waveguide pipe and crimping type conductor, make the component structure of waveguide pipe and low dielectric constant low-loss dielectric filler not only have excellent electric conductivity, obtain more outstanding bending characteristic simultaneously. In practical application, the bending is easier, the device is suitable for laying in narrow space, the laying cost can be saved, and the laying efficiency can be improved.

It should be noted that the thickness of the copper strap or the silver-plated copper strap is controlled between 0.04mm and 0.08mm, when the silver-plated copper wire is selected for weaving, the working temperature is 85 ℃ below 200 ℃, and when the tin-plated wire is selected for weaving, the working temperature is below 85 ℃.

In a specific embodiment, the braided reinforcement layer 130 is made of one of tin-plated wire or silver-plated braided wire. Through the design of the upper weaving reinforcing layer 130, the electromagnetic shielding function of the ultra-soft medium flexible waveguide can be improved while the tensile strength and the compressive strength of the wrapped waveguide tube are increased.

The high temperature resistant outer sheath 140 is made of one of PVE, PE, FEP or PFA. The outer sheath is made of PVE, PE, FEP or PFA with good corrosion resistance and insulation, FEP and PFA can be used in a working environment of-55 ℃ to +200 ℃ and PVC and PE can be used in a working environment of-20 ℃ to +85 ℃ when the high-temperature-resistant outer sheath is used, and the actual material of the high-temperature-resistant outer sheath 140 is selected according to actual requirements, so that detailed neoplasms are omitted.

In a specific embodiment, the dielectric filling body 110 is formed by extrusion molding with an oval or rectangular cross section, and the oval and rectangular dielectric filling bodies 110 are shown in fig. 2 and 3, respectively. The low-dielectric-constant low-loss high and low temperature resistant dielectric filling body is an extrusion die with different sizes and shapes according to the filling requirements of different sizes.

The embodiment of the application also provides a preparation method of the super-soft medium flexible waveguide, which comprises the following steps:

step A: preparing a medium filling body 110, wherein in the preparation process, low-density polytetrafluoroethylene suspension powder and ISOPAR solvent oil are mixed according to a ratio, and are prepared and molded through a pushing mold with an oval or rectangular cross section by using a pasty extrusion processing mode; then, through a high-temperature sintering furnace, the solvent oil is fully volatilized within the temperature range of 170-200 ℃ to obtain the low-dielectric-constant low-loss high-and-low temperature-resistant medium filler 110;

and B: preparing the wrapped waveguide tube 120, namely spirally winding a copper flat belt or a silver-plated copper flat belt on the outer wall of the low-dielectric-constant low-loss high and low temperature resistant medium filler 110, and completing the preparation of the wrapped waveguide tube 120;

and C: coating the braided reinforcement layer 130, namely, alternately braiding and coating the tinned wires or the silver-plated copper wires on the outer wall of the wrapped waveguide tube 120 to complete the preparation of the braided reinforcement layer 130;

step D: the outer wall of the braided reinforcing layer 130 is extruded and covered with a high temperature resistant outer sheath 140.

Example 3

Referring to fig. 1, 2 and 3, the present application provides an ultra-soft dielectric flexible waveguide, which includes a flexible waveguide assembly 100, the flexible waveguide assembly 100 includes a dielectric filling body 110, a lapped waveguide tube 120, a braided reinforcement layer 130 and a high temperature resistant outer sheath 140, the lapped waveguide tube 120 is spirally wound on the outer surface of the dielectric filling body 110, the braided reinforcement layer 130 is braided and coated on the outer wall of the lapped waveguide tube 120 in a mesh manner, and the high temperature resistant outer sheath 140 is coated on the outer wall of the braided reinforcement layer 130.

In some specific embodiments, the media pack 110 is low density polytetrafluoroethylene, which is a low density polytetrafluoroethylene suspension powder. It should be noted that, in the extrusion molding process of the medium filler, a certain proportion of ISOPAR solvent oil needs to be mixed as an extrusion aid, so that the polytetrafluoroethylene suspension powder is easier to be extruded and molded in the process (the raw material components of the low-density polytetrafluoroethylene suspension powder are 72% in percentage and the raw material components of the ISOPAR solvent oil are 29% in percentage in the mixing process); and then the solvent oil is fully volatilized in a high-temperature sintering furnace at the temperature of 170-200 ℃ to obtain the low-dielectric-constant low-loss high-and-low-temperature-resistant medium filling body 110.

By the medium filling body 110 arranged on the waveguide tube, low-density polytetrafluoroethylene suspension powder is used as a material of the low-dielectric-constant low-loss medium filling body, and can be used as a support of the wrapped waveguide tube, so that the wrapped waveguide tube is stable in structure and has the characteristic of softness; in addition, the dielectric constant of the low-density polytetrafluoroethylene is 1.6-1.8, and the material of the filler has an ultralow dielectric constant, so that the waveguide has very low transmission loss; the use of the low dielectric constant filler prevents various dirt and moist gas from entering the waveguide;

in addition, this dielectric filling body 110 still has resistant high low temperature characteristic, and the use of low dielectric constant low loss resistant high low temperature dielectric filling body and oversheath material makes flexible exempt from to aerify the waveguide and have resistant high low temperature characteristic simultaneously, and this dielectric filling body 110 can normal operating range: the temperature is-55 ℃ to +200 ℃, so that the reliability of the flexible low-dielectric-constant low-loss high and low temperature resistant waveguide in working environments with different temperature conditions is ensured.

In this embodiment, the wrapped waveguide 120 is made of one of a copper flat tape or a silver-plated copper flat tape. Through last design around package waveguide pipe 120, adopt winding copper bandlet or silvered copper bandlet on low dielectric constant low-loss dielectric filler outer wall, form the waveguide pipe around the package formula for replace traditional ripple waveguide pipe and crimping type conductor, make the component structure of waveguide pipe and low dielectric constant low-loss dielectric filler not only have excellent electric conductivity, obtain more outstanding bending characteristic simultaneously. In practical application, the bending is easier, the device is suitable for laying in narrow space, the laying cost can be saved, and the laying efficiency can be improved.

It should be noted that the thickness of the copper strap or the silver-plated copper strap is controlled between 0.04mm and 0.08mm, when the silver-plated copper wire is selected for weaving, the working temperature is 85 ℃ below 200 ℃, and when the tin-plated wire is selected for weaving, the working temperature is below 85 ℃.

In a specific embodiment, the braided reinforcement layer 130 is made of one of tin-plated wire or silver-plated braided wire. Through the design of the upper weaving reinforcing layer 130, the electromagnetic shielding function of the ultra-soft medium flexible waveguide can be improved while the tensile strength and the compressive strength of the wrapped waveguide tube are increased.

The high temperature resistant outer sheath 140 is made of one of PVE, PE, FEP or PFA. The outer sheath is made of PVE, PE, FEP or PFA with good corrosion resistance and insulation, FEP and PFA can be used in a working environment of-55 ℃ to +200 ℃ and PVC and PE can be used in a working environment of-20 ℃ to +85 ℃ when the high-temperature-resistant outer sheath is used, and the actual material of the high-temperature-resistant outer sheath 140 is selected according to actual requirements, so that detailed neoplasms are omitted.

In a specific embodiment, the dielectric filling body 110 is formed by extrusion molding with an oval or rectangular cross section, and the oval and rectangular dielectric filling bodies 110 are shown in fig. 2 and 3, respectively. The low-dielectric-constant low-loss high and low temperature resistant dielectric filling body is an extrusion die with different sizes and shapes according to the filling requirements of different sizes.

The embodiment of the application also provides a preparation method of the super-soft medium flexible waveguide, which comprises the following steps:

step A: preparing a medium filling body 110, wherein in the preparation process, low-density polytetrafluoroethylene suspension powder and ISOPAR solvent oil are mixed according to a ratio, and are prepared and molded through a pushing mold with an oval or rectangular cross section by using a pasty extrusion processing mode; then, through a high-temperature sintering furnace, the solvent oil is fully volatilized within the temperature range of 170-200 ℃ to obtain the low-dielectric-constant low-loss high-and-low temperature-resistant medium filler 110;

and B: preparing the wrapped waveguide tube 120, namely spirally winding a copper flat belt or a silver-plated copper flat belt on the outer wall of the low-dielectric-constant low-loss high and low temperature resistant medium filler 110, and completing the preparation of the wrapped waveguide tube 120;

and C: coating the braided reinforcement layer 130, namely, alternately braiding and coating the tinned wires or the silver-plated copper wires on the outer wall of the wrapped waveguide tube 120 to complete the preparation of the braided reinforcement layer 130;

step D: the outer wall of the braided reinforcing layer 130 is extruded and covered with a high temperature resistant outer sheath 140.

The working principle of the super-soft medium flexible waveguide is as follows: the traditional corrugated pipe waveguide structure is changed, the medium filling body 110, the wrapped waveguide pipe 120, the woven reinforcing layer 130 and the high-temperature-resistant outer sheath 140 are sequentially arranged from inside to outside, the composition of the medium filling body 110 is optimized, and the medium filling body 110 is made of low-density polytetrafluoroethylene suspension material, so that the interior of the waveguide pipe is not required to be inflated, the interior is ensured to be dry, and the maintenance difficulty and cost are reduced; the preparation process of spirally wrapping the copper flat belt or the silver-plated copper flat belt on the low-loss dielectric filling body provides a flexible soft characteristic for the waveguide tube, reduces laying difficulty and laying cost, and widens the application range of the waveguide; the extrusion preparation process of the low-loss dielectric filling body 110 improves the production efficiency and reduces the production difficulty and cost; the use of the braided reinforcing layer 130 and the high temperature resistant outer jacket 140 not only increases the mechanical and physical properties of the flexible waveguide, but also provides a wider operating temperature range.

The above embodiments are merely examples of the present application and are not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.