Wrapped and sintered polyfluorine composite belt cable for aerospace and preparation method of wrapped and sintered polyfluorine composite belt cable

Abstract

The invention discloses a wrapping and sintering polyfluorine composite belt cable for aerospace, and relates to the technical field of wrapping and sintering polyfluorine composite belt cables, the wrapping and sintering polyfluorine composite belt cable comprises a wrapping matrix, the wrapping matrix comprises multiple layers of wrapping belts, and the multiple sets of wrapping belts are filled with stretching materials for supporting the wrapping matrix structure. The coating matrix comprises multiple layers of coating belts, the multiple groups of coating belts are filled with a stretching material for supporting the coating matrix structure, the stretching material is prepared by polymerizing modified MWCNTs and a WS2 / ethylene propylene diene monomer composite material, and the coating matrix is assembled based on a mutual sleeving mode among an outer layer, a middle layer and an inner layer of a traditional cable structure. However, material modification is carried out from the outer layer, so that the cable can meet the use requirement of good conductivity in the aerospace field, and the use tolerance requirement of the cable under the aerospace condition is met (the cable is prevented from being disintegrated, fused, softened, disable at high temperature and the like under high-speed friction).

Description

Technical Field

[0001] The invention relates to the technical field of wrapped sintered polyfluorine composite tape cables, in particular to a wrapped sintered polyfluorine composite tape cable for aerospace and a preparation method thereof. Background Art

[0002] Polyfluorinated composite materials are essentially a structural variant of Teflon. According to the paper "Research Progress on Thermal Conductivity of Polyvinylidene Fluoride Composite Materials" of Donghua University, "PVDF (polyvinylidene fluoride) is a thermoplastic polymer whose long-chain macromolecules are composed of repeating units -CH2-CF2-. Based on factors such as PVDF molecular conformation, the type of induced nucleation material and heat treatment process, PVDF can form five crystal forms: α, β, γ, δ and ε, and its main crystal forms are α, β and γ. In the α crystal form, the molecular chains are arranged in reverse parallel to form a non-polar crystalline structure. For the β crystal, the molecular chain is perpendicular to the direction of the dipole moment. As for the γ crystal form, there is currently controversy. Hasegawa et al. believe that its chain configuration is almost the same as the β phase, while Weinhold et al. believe that in terms of unit cell parameters (a, b, c), its a and b values ​​are close to the α phase, and the c value is about twice that of the α phase. Among the five crystal forms of PVDF, Kara n et al. proved that the γ phase is closely related to its thermal conductivity. By introducing strong conductive nanofiller Fe-reduced graphene oxide (rGO) particles to act as a bridge between the spherulites of PVDF to promote heat conduction, the influence of the characteristic behavior of the γ phase of PVDF on the thermal conductivity of the composite material was studied, and it was proved that the enhancement of thermal conductivity is related to the thermal conductive network and the number of γ phase crystallites in the entire PVDF matrix. In recent years, although the discussion on the structure of PVDF has never stopped, it is worth confirming that PVDF with different crystal forms will show different physical and chemical properties. It can be seen that polyvinylidene fluoride is a polyfluorine composite that can be used in the aerospace field, and its heat conduction principle is through "introducing strong conductive nanofiller Fe-reduced graphene oxide (rGO) particles into PVDF to act as a bridge between the spherulites of PVDF". It can be seen that the content disclosed by this technology also needs to further improve the thermal conductivity of PVDF materials for mixing to meet the use requirements of aerospace materials;

[0003] Therefore, according to the paper "(Multi-walled Carbon Nanotubes) MWCNTs Improve the Nonlinear Electrical and Thermal Conductivity of WS2 / EPDM Rubber Composites" from the University of Science and Technology Beijing, "nonlinear electrical conductivity materials play an important role in power systems, especially in the medium and high voltage fields, such as electric field control materials in high-voltage DC cable accessories. In order to effectively homogenize the electric field, electric field control materials with good thermal conductivity and excellent nonlinear electrical conductivity have received widespread attention. The current commonly used preparation method is to use a semi-conductive filler and rubber to blend to prepare a composite material with nonlinear electrical conductivity. The difference in its nonlinear electrical conductivity mainly comes from the difference in the electrical conductivity of the filler" and "multi-walled carbon nanotubes (MWCNTs) are a material with both high thermal conductivity and high electrical conductivity. Studies have shown that only a small amount of MWCNTs is needed to significantly improve the thermal conductivity of the composite material. The heat transfer of MWCNTs is mainly achieved by internal electrons and phonons, and it is generally believed that the theoretical value of its thermal conductivity is relatively high. However, when used as a filler, MWCNTs are not so ideal for improving the thermal conductivity of composite materials. Researchers often use MWCNTs and BN as materials to regulate the electrical conductivity of polymer-based composites and improve their thermal conductivity. Similar to other solid dielectrics such as metals, the thermal conductivity of MWCNTs also decreases with increasing temperature. Some researchers have conducted detailed research on this aspect. In previous work [3], we studied the nonlinear conductivity and other properties of WS2 / EPDM composites obtained by blending nano-WS2 with ethylene propylene diene monomer (EPDM), proving its feasibility as a field-controlled material. We found that when the mass ratio of WS2 to EPDM was 30:100 (30%), the WS2 content had an important value for the regulatable nonlinear electrical and thermal conductivity of the composite. When the mass ratio of WS2 to EPDM was higher than 30%, the WS2 / EPDM composite began to show a relatively obvious nonlinear change in electrical conductivity with the electric field intensity at 25°C, and had relatively stable nonlinear electrical conductivity at 50°C and 80°C. At the same time, when the WS2 content was higher than 30%, the thermal conductivity of the WS2 / EPDM composite began to increase significantly.

[0004] However, considering the use environment of aerospace materials, when using PVDF (polyvinylidene fluoride) as the base material, MWCNTs, and WS2 / EPDM rubber composites as the main materials for the development of wrapped and sintered polyfluorine composites for aerospace, the excessive free electrons inside lead to insufficient optimization of the material's electrical conductivity. In addition, the harsh use conditions of aerospace can easily cause the equipment using this material and this technology to break down, affecting the normal use of the material. Summary of the invention

[0005] The object of the present invention is to provide a wrapped sintered polyfluorine composite tape cable for aerospace and a preparation method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wrapped sintered polyfluorine composite tape cable for aerospace, comprising a coating matrix, the coating matrix comprising multiple layers of coating tapes, multiple groups of the coating tapes are filled with a stretching material for supporting the coating matrix structure, the stretching material is made by polymerizing modified MWCNTs and WS2 / EPDM rubber composite materials, and is assembled based on the mutual sleeve connection between the outer layer, the middle layer and the inner layer of the traditional cable structure, but the present application modifies the material from the outer layer, so that the cable can meet the use requirements of good conductivity in the aerospace field, and achieve the tolerance requirements of the cable under aerospace conditions (to keep the cable from disintegrating, melting, softening, high-temperature failure, etc. under high-speed friction);

[0007] Filler, the filler includes a modified elastomer and a metal armor, the modified elastomer and the metal armor are filled inside the coating matrix, based on the middle layer located between the outer layer and the inner layer of the wrapped sintered polyfluorine composite tape cable, the present application performs tolerant material filling in the middle layer, and can keep the outer layer of the wrapped sintered polyfluorine composite tape cable from collapsing and melting, and the inner layer from failing at high temperature through the good heat insulation and heat absorption performance of the middle layer, so that the wrapped sintered polyfluorine composite tape cable can still be used for a certain period of time under extreme conditions; and

[0008] The battery core is embedded in the filler and fixedly connected to the filler. During use, the battery core in the wrapped sintered polyfluorine composite tape cable will be adapted to a hard alloy metal with strength matching that used in aerospace, so that the battery core in the wrapped sintered polyfluorine composite tape cable will not disintegrate in a high temperature environment.

[0009] A wrapped sintered polyfluorine composite tape cable for aerospace and a preparation method thereof, comprising:

[0010] Step S1: preparing the inner layer, middle layer and outer layer of the wrapped sintered polyfluorine composite tape cable;

[0011] Step S11: graft copolymerizing MWCNTs with γ-aminopropyltriethoxysilane and performing sp 3 hybridization;

[0012] Step S12: soaking the WS2 / EPDM rubber composite material in a fluorinated weak alkaline solution;

[0013] Step S13: subjecting the surface of the fluorine-containing elastomer SIFEL 3705 to bonding treatment through a gluing device;

[0014] Step S14: inserting the metal armor into the fluoroelastomer SIFEL 3705 and assembling it therewith;

[0015] Step S15: Wrapping a multi-layer shielding cooling ring around the outer periphery of the battery core alloy;

[0016] Step S2: After assembly, check and use.

[0017] As a further solution of the present invention: a wrapped sintered polyfluorine composite tape cable for aerospace use, the MWCNTs are grafted and copolymerized with γ-aminopropyltriethoxysilane, and the electrons in the outermost ring of the MWCNTs molecules are sp 3 Hybridization, specifically, MWCNTs (multi-walled carbon nanotubes) can be grafted with γ-aminopropyltriethoxysilane to combine with the outermost electrons of the molecules in MWCNTs (multi-walled carbon nanotubes) through the silane functional group, improving the stability of the chemical bonds in MWCNTs (multi-walled carbon nanotubes), so that the electrons in the outermost molecular orbit of MWCNTs (multi-walled carbon nanotubes) will not escape, ensuring the stability of MWCNTs (multi-walled carbon nanotubes). In addition, the outermost ring of MWCNTs (multi-walled carbon nanotubes) is sp 3 Hybridization enables the carbon atoms to form four equivalent σ bonds, which can form stable covalent bonds with other atoms (such as hydrogen, oxygen, nitrogen, etc.) in the γ-aminopropyltriethoxysilane functional group. It is a technology for the use of wrapped sintered polyfluorine composite tape cables under aerospace conditions.

[0018] As a further solution of the present invention: a wrapped sintered polyfluorine composite tape cable for aerospace use, wherein the WS2 / EPDM rubber composite material is treated by fluorination and then soaking in a weak alkaline solution, wherein the WS2 / EPDM rubber composite material can enhance the stability of the CF bond in the WS2 / EPDM rubber composite material after fluorination, specifically because the CF bond is the strongest single bond and a relatively short bond, so that when it is added to the same carbon in the WS2 / EPDM rubber composite material, the bond is strengthened and the bond length is shortened (its properties are similar to those of fluorocarbons such as tetrafluoromethane (carbon tetrafluoride) which are the most inactive organic compounds), thereby effectively improving the stability of the WS2 / EPDM rubber composite material, and soaking the WS2 / EPDM rubber composite material in a weak alkaline solution can improve the interface bonding between WS2 and the rubber matrix, making the WS2 / EPDM rubber composite material matrix bonding more stable, thereby effectively improving the tolerance performance of the composite material.

[0019] As a further solution of the present invention: a wrapped sintered polyfluorine composite tape cable for aerospace use, the modified elastomer includes a fluorine-containing elastomer SIFEL 3705, and the surface wall of the fluorine-containing elastomer SIFEL 3705 is subjected to an adhesive treatment by a gluing device, specifically, the fluorine-containing elastomer SIFEL 3705 is subjected to a plasma treatment to activate the surface of the fluorine-containing elastomer SIFEL 3705, so that the surface layer of the fluorine-containing elastomer SIFEL 3705 is softened and adhesive, and the hardness is generally HA20-80 (that is, when the metal armor is attached to the surface of the fluorine-containing elastomer SIFEL 3705, it can be highly tightly attached).

[0020] As a further solution of the present invention: a wrapped sintered polyfluorine composite tape cable for aerospace use, the metal armor includes a titanium-based composite metal ring wrapped around the periphery of the fluorine-containing elastomer SIFEL 3705, and a contact inserted into the fluorine-containing elastomer SIFEL 3705 is fixedly installed on one side of the titanium-based composite metal ring, the contact having a matching hardness generally being HA20-80, which can make the metal armor adhere to the surface of the fluorine-containing elastomer SIFEL 3705 with a high degree of fit, and can also penetrate into the fluorine-containing elastomer SIFEL 3705, so that the metal armor can connect excess electrons in the fluorine-containing elastomer SIFEL 3705 to the metal armor on the basis of electromagnetic shielding, thereby reducing the number of electrons inside the wrapped sintered polyfluorine composite tape cable, and avoiding the problem of internal ionization damage of the wrapped sintered polyfluorine composite tape cable under aerospace conditions.

[0021] As a further solution of the present invention: a wrapped sintered polyfluorine composite tape cable for aerospace, the battery core includes a battery core alloy winding material composed of a titanium alloy and a nickel-based alloy, and the specific nickel-based alloy is an alloy material made of a composite of Inconel or Monel. Inconel steel products can exist in several crystal forms, among which the most common are body-centered cubic (bcc) and face-centered cubic (fcc). In pure iron, the fcc structure still exists between 910 and 1400°C, and the melting temperature of the body-centered cubic structure below and above this time interval is as high as 1539°C, and a stable passivation film will be formed on the surface of this material when it is used, so it can be used more stably under aerospace conditions.

[0022] As a further solution of the present invention: a wrapped sintered polyfluorine composite tape cable for aerospace, the outer periphery of the battery core alloy wrapping material is wrapped with a multi-layer shielding and cooling ring, wherein the shielding and cooling ring is made of acidified barium titanate ceramic, and the barium titanate ceramic is a ceramic material with barium titanate (BaTiO3) or its solid solution as the main crystal phase. The main raw materials are barium carbonate and titanium dioxide. Usually, barium titanate is synthesized at about 1200℃, and then modified oxides are added. After fine grinding and forming, it is sintered at about 1400℃. Since barium titanate ceramics are a calcium soft ore structure in the perovskite structure type, the spacing between its molecules is large, the phase change process is relatively complex, and it has relatively strong piezoelectric ferroelectricity at room temperature, it will produce ionization interference on the electron transmission in the battery core. However, barium titanate has good high temperature resistance and is widely used in shielding and cooling rings for aerospace cables. Therefore, to combat the above-mentioned ionization interference, barium titanate can be acidified and the acid will release hydrogen ions (H+). These hydrogen ions can combine with the negative charge on the surface of the material to form a neutral state, thereby consuming the protonation of free electrons to change the ionization state of the outer layer of barium titanate and promote the stable application of barium titanate.

[0023] As a further solution of the present invention: a wrapped and sintered polyfluorine composite tape cable for aerospace use also includes a comprehensive re-inspection device, in which an optical detection unit, a strength detection unit and a component detection unit are provided. The optical detection unit, the strength detection unit and the component detection unit respectively perform quality inspection on the cable.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The coating matrix of the present application includes a plurality of layers of coating tapes, and the interior of the plurality of coating tapes is filled with a stretching material for supporting the coating matrix structure. The stretching material is made by polymerizing the modified MWCNTs and WS2 / EPDM rubber composite material, and is assembled based on the mutual sleeve connection between the outer layer, the middle layer and the inner layer of the traditional cable structure. However, the present application modifies the material from the outer layer so that the cable can meet the use requirements of good electrical conductivity in the aerospace field and achieve the tolerance requirements of the cable under aerospace conditions (to prevent the cable from disintegrating, melting, softening, high temperature failure, etc. under high-speed friction);

[0026] 2. The filler of the present application includes a modified elastomer and a metal armor, and the modified elastomer and the metal armor are filled inside the coating matrix. Based on the middle layer located between the outer layer and the inner layer of the wrapped sintered polyfluorine composite tape cable, the present application fills the middle layer with a tolerant material, and can keep the outer layer of the wrapped sintered polyfluorine composite tape cable from collapsing and melting, and the inner layer from failing at high temperature through the good heat insulation and heat absorption performance of the middle layer, so that the wrapped sintered polyfluorine composite tape cable can still be used for a certain period of time under extreme conditions;

[0027] 3. The battery cells of the present application are embedded in the filler and fixedly connected to the filler. During use, the battery cells in the wrapped sintered polyfluorine composite tape cable will be adapted to the hard alloy metal with strength matching that used in aerospace, so as to prevent the battery cells in the wrapped sintered polyfluorine composite tape cable from disintegrating in a high temperature environment.

[0028] 4. Therefore, the present application makes a comprehensive improvement in the materials of the wrapped sintered polyfluorine composite tape cable, so that the wrapped sintered polyfluorine composite tape cable can adapt to the use requirements of aerospace and solve the problem of insufficient cable conductivity in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic flow chart of a wrapped and sintered polyfluorine composite tape cable for aerospace use and a preparation method thereof of the present invention;

[0030] Figure 2 The present invention is a schematic flow chart of step S1 in a wrapped and sintered polyfluorine composite tape cable for aerospace use and a preparation method thereof. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that, for those skilled in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. The following describes an embodiment of the present invention based on its overall structure.

[0033] In an embodiment of the present invention, a wrapped sintered polyfluorine composite tape cable for aerospace use includes a coating matrix, the coating matrix includes multiple layers of coating tapes, and the interior of the multiple groups of coating tapes is filled with a stretching material for supporting the coating matrix structure, the stretching material is made by polymerizing modified MWCNTs and WS2 / ethylene propylene rubber composite materials, and is assembled based on the mutual sleeve connection between the outer layer, the middle layer and the inner layer of the traditional cable structure, but the present application modifies the material from the outer layer so that the cable can meet the use requirements of good electrical conductivity in the aerospace field and achieve the tolerance requirements of the cable under aerospace conditions (to keep the cable from disintegrating, melting, softening, high-temperature failure, etc. under high-speed friction), and the MWCNTs are grafted and copolymerized with γ-aminopropyltriethoxysilane, and the electrons in the outermost ring of the MWCNTs molecules are sp 3Hybridization, specifically, MWCNTs (multi-walled carbon nanotubes) can be grafted with γ-aminopropyltriethoxysilane to combine with the outermost electrons of the molecules in MWCNTs (multi-walled carbon nanotubes) through the silane functional group, improving the stability of the chemical bonds in MWCNTs (multi-walled carbon nanotubes), so that the electrons in the outermost molecular orbit of MWCNTs (multi-walled carbon nanotubes) will not escape, ensuring the stability of MWCNTs (multi-walled carbon nanotubes). In addition, the outermost ring of MWCNTs (multi-walled carbon nanotubes) is sp 3 Hybridization allows the carbon atoms to form four equivalent σ bonds, which can form stable covalent bonds with other atoms (such as hydrogen, oxygen, nitrogen, etc.) in the γ-aminopropyltriethoxysilane functional group, so that MWCNTs (multi-walled carbon nanotubes) will not produce ionization transfer effects when in use, so that electrons from the outside or inside of the wrapped sintered polyfluorine composite tape cable will not pass through the outer layer of the wrapped sintered polyfluorine composite tape cable for cross-linking, effectively ensuring the stable working state of the wrapped sintered polyfluorine composite tape cable during use, thereby solving the problem that the existing technology is easily broken down by free electrons dispersed in the aerospace space environment during use, and ensuring the normal use of the material;

[0034] In addition, the WS2 / EPDM rubber composite material is treated with a weak alkaline solution after fluorination, wherein the WS2 / EPDM rubber composite material can enhance the stability of the CF bond in the WS2 / EPDM rubber composite material after fluorination, specifically because the CF bond is the strongest single bond and a relatively short bond, so that when it is added to the same carbon in the WS2 / EPDM rubber composite material, the bond is strengthened and the bond length is shortened (its properties are similar to those of fluorocarbons such as tetrafluoromethane (carbon tetrafluoride) which are the most inactive organic compounds), so the stability of the WS2 / EPDM rubber composite material can be effectively improved. As for the WS2 / EPDM rubber composite material, soaking in a weak alkaline solution can improve the interface bonding between WS2 and the rubber matrix, making the WS2 / EPDM rubber composite material matrix bonding more stable, thereby effectively improving the tolerance of the composite material.

[0035] Other embodiments of the present invention: the filler includes a modified elastomer and a metal armor, and the modified elastomer and the metal armor are filled inside the coating matrix. Based on the middle layer located between the outer layer and the inner layer of the wrapped sintered polyfluorine composite tape cable, the present application performs tolerant material filling in the middle layer, and the outer layer of the wrapped sintered polyfluorine composite tape cable will not collapse and melt, and the inner layer will not fail at high temperature through the good heat insulation and heat absorption performance of the middle layer, so that the wrapped sintered polyfluorine composite tape cable can still be used for a certain period of time under extreme conditions. The modified elastomer includes a fluorine-containing elastomer SIFEL 3705, and the surface wall of the fluorine-containing elastomer SIFEL 3705 is subjected to an adhesive treatment by a gluing device, specifically, the fluorine-containing elastomer SIFEL 3705 is subjected to a plasma treatment to activate the surface of the fluorine-containing elastomer SIFEL 3705, so that the surface layer of the fluorine-containing elastomer SIFEL 3705 is softened and adhesive, and the hardness is generally HA20-80 (that is, the metal armor is attached to the fluorine-containing elastomer SIFEL 3705 surface), and the metal armor includes a titanium-based composite metal ring wrapped around the outer periphery of the fluoroelastomer SIFEL 3705, and a contact inserted into the fluoroelastomer SIFEL 3705 is fixedly installed on one side of the titanium-based composite metal ring. The contact has a hardness of HA20-80, which can make the metal armor adhere to the surface of the fluoroelastomer SIFEL 3705 with high tightness, and can also penetrate into the fluoroelastomer SIFEL 3705, so that the metal armor can lead the excess electrons in the fluoroelastomer SIFEL 3705 to the metal armor on the basis of electromagnetic shielding, thereby reducing the number of electrons in the wrapped sintered polyfluorine composite tape cable, and avoiding the problem of internal ionization damage of the wrapped sintered polyfluorine composite tape cable under aerospace conditions;

[0036] Other embodiments of the present invention: the battery core is embedded in the filler and fixedly connected to the filler. During use, the battery core in the wrapped sintered polyfluorine composite tape cable will be adapted to a hard alloy metal with strength matching that used in aerospace, so that the battery core in the wrapped sintered polyfluorine composite tape cable will not disintegrate in a high temperature environment. The battery core includes a battery core alloy winding material composed of a titanium alloy and a nickel-based alloy. The specific nickel-based alloy is an alloy material made of Inconel or Monel. Inconel steel products can exist in several crystal forms, the most common of which are body-centered cubic (bcc) and face-centered cubic (fcc). In pure iron, the fcc structure still exists between 910 and 1400 ° C, and the body-centered cubic structure below and above this time interval reaches a melting temperature of 1539 ° C. When this material is used, a stable passivation film will be formed on its surface, so it can be used stably under aerospace conditions. The outer periphery of the battery core alloy wrapping material is wrapped with a multi-layer shielding and cooling ring, wherein the shielding and cooling ring is made of acidified barium titanate ceramic, which is a ceramic material with barium titanate (BaTiO3) or its solid solution as the main crystal phase. The main raw materials are barium carbonate and titanium dioxide. Usually, barium titanate is synthesized at about 1200℃, and then modified oxides are added. After fine grinding and forming, it is sintered at about 1400℃. Since barium titanate ceramics are a calcium soft ore structure in the perovskite structure type, the spacing between its molecules is large, the phase change process is relatively complex, and it has relatively strong piezoelectric ferroelectricity at room temperature, it will produce ionization interference on the electron transmission in the battery core. However, barium titanate has good high temperature resistance and is widely used in shielding and cooling rings for aerospace cables. Therefore, to combat the above-mentioned ionization interference, barium titanate can be acidified and the acid will release hydrogen ions (H+). These hydrogen ions can combine with the negative charge on the surface of the material to form a neutral state, thereby consuming the protonation of free electrons to change the ionization state of the outer layer of barium titanate and promote the stable application of barium titanate.

[0037] A wrapped sintered polyfluorine composite tape cable for aerospace and a preparation method thereof, comprising:

[0038] Step S1: preparing the inner layer, middle layer and outer layer of the wrapped sintered polyfluorine composite tape cable;

[0039] Step S11: graft copolymerizing MWCNTs with γ-aminopropyltriethoxysilane and performing sp 3 hybridization;

[0040] Step S12: soaking the WS2 / EPDM rubber composite material in a fluorinated weak alkaline solution;

[0041] Step S13: subjecting the surface of the fluorine-containing elastomer SIFEL 3705 to bonding treatment through a gluing device;

[0042] Step S14: inserting the metal armor into the fluoroelastomer SIFEL 3705 and assembling it therewith;

[0043] Step S15: Wrapping a multi-layer shielding cooling ring around the outer periphery of the battery core alloy;

[0044] Step S2: After assembly, check and use.

[0045] The working principle of the present invention is: since the coating matrix includes multiple layers of coating tapes, the multiple groups of coating tapes are filled with a stretching material for supporting the coating matrix structure, and the stretching material is made by polymerizing the modified MWCNTs and WS2 / EPDM rubber composite material, and is assembled based on the outer layer, middle layer and inner layer of the traditional cable structure. However, the present application modifies the material from the outer layer so that the cable can meet the use requirements of good electrical conductivity in the aerospace field and achieve the tolerance requirements of the cable under aerospace conditions (to keep the cable from disintegrating, melting, softening, high-temperature failure, etc. under high-speed friction);

[0046] The filler includes a modified elastomer and a metal armor, and the modified elastomer and the metal armor are filled inside the coating matrix. Based on the middle layer located between the outer layer and the inner layer of the wrapped sintered polyfluorine composite tape cable, the present application performs tolerant material filling in the middle layer, and can keep the outer layer of the wrapped sintered polyfluorine composite tape cable from collapsing and melting, and the inner layer from failing at high temperature through the good heat insulation and heat absorption performance of the middle layer, so that the wrapped sintered polyfluorine composite tape cable can still be used for a certain period of time under extreme conditions;

[0047] At the same time, the battery core is embedded in the filler and fixed to the filler. During use, the battery core in the wrapped sintered polyfluorine composite tape cable will be adapted to the hard alloy metal with strength matching that used in aerospace, so as to prevent the battery core in the wrapped sintered polyfluorine composite tape cable from disintegrating in a high temperature environment.

[0048] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wrapped sintered polyfluorine composite tape cable for aerospace use, characterized in that: The coating matrix comprises a coating tape, wherein the coating matrix comprises a plurality of layers of coating tapes, wherein the coating tapes are filled with a stretching material for supporting the coating matrix structure, wherein the stretching material is made by polymerizing a modified MWCNTs and WS2 / EPDM rubber composite material; A filler, wherein the filler comprises a modified elastomer and a metal armor, wherein the modified elastomer and the metal armor are both filled inside the coating matrix; and The battery core is embedded in the filler and fixed to the filler.

2. The wrapped sintered polyfluorine composite tape cable for aerospace use according to claim 1, characterized in that: The MWCNTs are grafted and copolymerized with γ-aminopropyltriethoxysilane, and the electrons in the outermost ring of the MWCNTs molecules are sp 3 Hybridization.

3. The wrapped sintered polyfluorine composite tape cable for aerospace use according to claim 2, characterized in that: The WS2 / EPDM rubber composite material is treated by immersion in a weak alkaline solution after fluorination.

4. The wrapped sintered polyfluorine composite tape cable for aerospace use according to claim 3, characterized in that: The modified elastomer includes fluorine-containing elastomer SIFEL 3705, and the surface wall of the fluorine-containing elastomer SIFEL 3705 is subjected to bonding treatment by a gluing device.

5. The wrapped sintered polyfluorine composite tape cable for aerospace use according to claim 4, characterized in that: The metal armor comprises a titanium-based composite metal ring wound around the outer periphery of the fluorine-containing elastomer SIFEL 3705, and a contact inserted into the fluorine-containing elastomer SIFEL 3705 is fixedly installed on one side of the titanium-based composite metal ring.

6. The wrapped sintered polyfluorine composite tape cable for aerospace use according to claim 5, characterized in that: The battery core comprises a battery core alloy winding material composed of a titanium alloy and a nickel-based alloy.

7. The wrapped sintered polyfluorine composite tape cable for aerospace use according to claim 6, characterized in that: The outer periphery of the battery core alloy wrapping material is wound with multiple layers of shielding and cooling rings.

8. The wrapped sintered polyfluorine composite tape cable for aerospace and the preparation method thereof according to claim 7, characterized in that: include Step S1: preparing the inner layer, middle layer and outer layer of the wrapped sintered polyfluorine composite tape cable; Step S2: After assembly, check and use.

9. The wrapped sintered polyfluorine composite tape cable for aerospace and the preparation method thereof according to claim 8, characterized in that: The step S1 includes Step S11: graft copolymerize MWCNTs with γ-aminopropyltriethoxysilane, and perform sp 3 hybridization; Step S12: soaking the WS2 / EPDM rubber composite material in a fluorinated weak alkaline solution; Step S13: subjecting the surface of the fluorine-containing elastomer SIFEL 3705 to bonding treatment through a gluing device; Step S14: inserting the metal armor into the fluoroelastomer SIFEL 3705 and assembling it therewith; Step S15: Wrap the multi-layer shielding cooling ring around the outer periphery of the battery core alloy.

Images