Military anti-interference high-temperature-resistant computer cable

Abstract

The utility model provides a military anti-interference high-temperature-resistant computer cable, which belongs to the technical field of cables and comprises a cable body, the cable body comprises reinforcing ribs, a center piece and an insulating layer, a cable core is arranged between the inner insulating layer and the center piece, a high-temperature-resistant flame-retardant functional layer is arranged on the inner insulating layer, and the center piece is provided with a high-temperature-resistant flame-retardant functional layer. The high-temperature-resistant flame-retardant functional layer comprises a first metal net shielding layer, a second metal net shielding layer and a flame-retardant layer which are formed by weaving, and the high-temperature-resistant flame-retardant functional layer improves the overall high-temperature-resistant flame-retardant performance of the cable on the premise of not influencing the tensile and torsion-resistant capabilities of the outer protective layer. Aluminum hydroxide and magnesium hydroxide flame retardants are combined with the metal net layer after being heated to form a metal oxide which covers the surface of the cable, the effects of isolating heat and oxygen transfer are achieved, continuous combustion of the material can be prevented, the flame-retardant synergistic effect is achieved under the cooperation of the boehmite flame retardant, the flame-retardant time can be further prolonged, and the service life of the cable is prolonged. And the internal conductor is protected.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of cables, in particular to a military anti-interference and high-temperature resistant computer cable. Background Art

[0002] Cables are generally composed of three parts: conductor, insulation layer and protective layer. They are laid underground, in the air, etc. There are usually two types of cables: power cables and control cables. Power cables are mainly used for the transmission and distribution of electric energy, while control cables are mainly used for measurement, protection, control and other lines. Cables have the characteristics of internal power supply and external insulation.

[0003] Computer cables are suitable for electronic computers and automation connections with rated voltages of 500V and below and with high requirements for anti-interference. The cable ground core insulation adopts K-type B low-density polyethylene with antioxidant properties. Polyethylene has high insulation resistance, good voltage resistance, small dielectric constant and small dielectric loss. It is also less affected by temperature and frequency. It can not only meet the transmission performance requirements, but also ensure the service life of the cable.

[0004] At present, computers with high-temperature resistant and flame-retardant functions all have flame retardants added to the outer sheath. Usually, the amount of inorganic flame retardants added must reach more than 50% to achieve a good flame retardant effect. However, when the amount added is too high, there is uncertainty in its dispersion in the outer sheath matrix. There is a certain relationship between the combustion behavior of the composite material and the type and dispersion state of the filler. The research shows that with the increase of the amount of flame retardant, the mechanical properties of the outer sheath composite material will be significantly reduced. This is mainly because too much flame retardant is unevenly dispersed in the matrix, and partial agglomeration or debonding and stratification occur, which weakens the bonding force between the matrix and the filler. Therefore, when subjected to tension, microcracks are easily generated and broken.

[0005] Based on this, we need to develop a method that can improve the overall high temperature resistance and flame retardancy of the cable while ensuring that the external protective layer has a certain strength in tensile and torsional resistance. Utility Model Content

[0006] The technical solution of the utility model aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology. Specifically, the utility model mainly provides a military anti-interference and high-temperature resistant computer cable to solve the technical problem proposed in the above background technology that in order to improve the flame retardant effect of the cable, flame retardants are mainly added to the components of the outer sheath, but the addition amount of inorganic flame retardants must reach more than 50% to achieve a good flame retardant effect. At the same time, the bonding force between the flame retardant and other components will also be weakened, and micro cracks are prone to occur.

[0007] The technical solution adopted by the utility model to solve the above technical problems is:

[0008] A military anti-interference and high-temperature resistant computer cable, comprising a cable body, the cable body comprising reinforcing ribs, and an extruded center piece is arranged on the reinforcing ribs, an inner insulating layer is arranged outside the center piece, and a wire core is arranged between the inner insulating layer and the center piece, a high-temperature resistant flame-retardant functional layer is arranged on the inner insulating layer, the high-temperature resistant flame-retardant functional layer comprises a woven first metal mesh shielding layer and a second metal mesh shielding layer, a flame retardant layer is arranged between the first metal mesh shielding layer and the second metal mesh shielding layer, the flame retardant layer comprises a first hose filled with an aluminum hydroxide flame retardant, a second hose filled with a magnesium hydroxide flame retardant and a third hose filled with a boehmite flame retardant, and is woven by the first hose, the second hose and the third hose.

[0009] Furthermore, the cross-sectional radii of the first hose, the second hose and the third hose are the same.

[0010] Furthermore, an extruded outer protective layer is provided on the high temperature resistant flame retardant functional layer, and the cross-sectional radius of the outer protective layer is smaller than the cross-sectional radius of the high temperature resistant flame retardant functional layer.

[0011] Furthermore, the center piece includes a main body portion, four supporting portions are arranged around the main body portion at equal intervals, and the main body portion is provided with through holes, and the through holes and reinforcing ribs cooperate with each other.

[0012] Furthermore, the outer edge of each of the support portions is in contact with the inner wall of the inner insulating layer.

[0013] Furthermore, each of the wire cores comprises a twisted conductor and an extruded insulating sheath.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model improves the overall high-temperature flame retardant performance of the cable without affecting the tensile and torsional resistance of the outer protective layer by arranging a first metal mesh shielding layer, a second metal mesh shielding layer, a flame retardant layer, a first hose, a second hose and a third hose. The aluminum hydroxide and magnesium hydroxide flame retardants are combined with the metal mesh layer after being heated to form metal oxides covering the surface of the cable, which plays a role in isolating heat and oxygen transfer and preventing the material from continuing to burn. In the early stage of combustion (within about 300°C), the aluminum hydroxide and magnesium hydroxide release crystalline water to achieve the purpose of flame retardancy. With the increase of the combustion temperature (about 300°C or above), the boehmite flame retardant will release crystalline water, which can make up for the problem of premature water loss of aluminum hydroxide and magnesium hydroxide, achieve the effect of flame retardant synergy, further increase the flame retardant time, and protect the internal conductor.

[0016] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall structure decomposition of the utility model;

[0019] Figure 3 This is a schematic diagram of the three hose structures of the utility model.

[0020] In the figure: 1. cable body; 11. reinforcement ribs; 12. center piece; 121. main body; 122. perforation; 123. support part; 13. core; 131. conductor; 132. insulating sheath; 14. inner insulating layer; 15. outer protective layer; 2. high temperature resistant and flame retardant functional layer; 21. first metal mesh shielding layer; 22. second metal mesh shielding layer; 23. flame retardant layer; 231. first hose; 232. second hose; 233. third hose. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field of the present invention. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] Please refer to the attached Figure 1-3A military anti-interference and high-temperature resistant computer cable comprises a cable body 1, wherein the cable body 1 comprises a reinforcing rib 11, and an extruded center piece 12 is arranged on the reinforcing rib 11, an inner insulating layer 14 is arranged outside the center piece 12, and a wire core 13 is arranged between the inner insulating layer 14 and the center piece 12, and a high-temperature resistant flame-retardant functional layer 2 is arranged on the inner insulating layer 14, and the high-temperature resistant flame-retardant functional layer 2 comprises a woven first metal mesh shielding layer 21 and a second metal mesh shielding layer 22, and a flame-retardant layer 23 is arranged between the first metal mesh shielding layer 21 and the second metal mesh shielding layer 22, and the flame-retardant layer 23 comprises a first hose 231 filled with an aluminum hydroxide flame retardant, a second hose 232 filled with a magnesium hydroxide flame retardant, and a third hose 233 filled with a boehmite flame retardant, and is woven by the first hose 231, the second hose 232 and the third hose 233.

[0025] Through the above structure, the overall high-temperature flame retardant performance of the cable is improved without affecting the tensile and torsional resistance of the outer protective layer 15. The aluminum hydroxide and magnesium hydroxide flame retardants are combined with the metal mesh layer after heating to form metal oxides covering the surface of the cable, which plays a role in isolating heat and oxygen transfer, and can prevent the material from continuing to burn. In addition, aluminum hydroxide and magnesium hydroxide release crystalline water in the early stage of combustion (within about 300°C) to achieve the purpose of flame retardancy. As the combustion temperature increases (about 300°C or above), the boehmite flame retardant will release crystalline water, which can make up for the problem of premature water loss of aluminum hydroxide and magnesium hydroxide, achieve a flame retardant synergistic effect, and can further increase the flame retardant time to protect the internal conductor 131.

[0026] Please refer to the attached Figure 2 and attached Figure 3 The cross-sectional radius of the first hose 231, the second hose 232 and the third hose 233 are the same. An extruded outer protective layer 15 is provided on the high temperature resistant flame retardant functional layer 2. The cross-sectional radius of the outer protective layer 15 is smaller than the cross-sectional radius of the high temperature resistant flame retardant functional layer 2. The outer protective layer 15 is used to protect the entire cable, and the insulation, waterproof and moisture-proof properties are improved. The center piece 12 includes a main body 121, and four support parts 123 are evenly spaced around the main body 121. The main body 121 is provided with a perforation 122, and the perforation 122 cooperates with the reinforcement rib 11. The outer edge of each support part 123 contacts the inner wall of the inner insulating layer 14. The cooperation between the center piece 12 and the reinforcement rib 11 improves the overall toughness and anti-extrusion ability of the cable. Each of the cores 13 includes a twisted conductor 131 and an extruded insulating sheath 132.

[0027] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A military anti-interference and high temperature resistant computer cable, comprising a cable body (1), the cable body (1) comprising a reinforcing rib (11), and an extruded center piece (12) is arranged on the reinforcing rib (11), an inner insulating layer (14) is arranged outside the center piece (12), and a wire core (13) is arranged between the inner insulating layer (14) and the center piece (12), characterized in that: A high temperature resistant flame retardant functional layer (2) is arranged on the inner insulating layer (14), the high temperature resistant flame retardant functional layer (2) comprising a first metal mesh shielding layer (21) and a second metal mesh shielding layer (22) which are woven into a shape, a flame retardant layer (23) is arranged between the first metal mesh shielding layer (21) and the second metal mesh shielding layer (22), the flame retardant layer (23) comprising a first hose (231) filled with an aluminum hydroxide flame retardant, a second hose (232) filled with a magnesium hydroxide flame retardant, and a third hose (233) filled with a boehmite flame retardant, and the first hose (231), the second hose (232), and the third hose (233) are woven into a shape.

2. A military anti-interference and high temperature resistant computer cable according to claim 1, characterized in that: The cross-sectional radii of the first hose (231), the second hose (232) and the third hose (233) are the same.

3. A military anti-interference and high temperature resistant computer cable according to claim 1, characterized in that: An extruded outer protective layer (15) is provided on the high temperature resistant flame retardant functional layer (2), and the cross-sectional radius of the outer protective layer (15) is smaller than the cross-sectional radius of the high temperature resistant flame retardant functional layer (2).

4. A military anti-interference and high temperature resistant computer cable according to claim 1, characterized in that: The center piece (12) comprises a main body (121), four support parts (123) are arranged around the main body (121) at equal intervals, and a through hole (122) is arranged on the main body (121), and the through hole (122) and the reinforcing rib (11) cooperate with each other.

5. A military anti-interference and high temperature resistant computer cable according to claim 4, characterized in that: The outer edge of each support portion (123) is in contact with the inner wall of the inner insulating layer (14).

6. A military anti-interference and high temperature resistant computer cable according to claim 1, characterized in that: Each of the wire cores (13) comprises a twisted conductor (131) and an extruded insulating sheath (132).

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