阅读说明：本技术 轻型柔性抗高能电磁脉冲特种综合电缆 (Light flexible high-energy electromagnetic pulse resistant special composite cable ) 是由 贾鹏翔 赵忠祥 席铭铭 管雨娟 于 2020-11-13 设计创作，主要内容包括：本发明公开了一种轻型柔性抗高能电磁脉冲特种综合电缆,包括由至少两根线芯绞合而成的缆芯、屏蔽层和护套层,所述屏蔽层由内到外依次包括第一铜箔层、第一合金层、第二铜箔层、第二合金层和第三铜箔层。绝缘层和护套层采用高性能热塑性弹性体TPV。本发明对传统抗高能电磁脉冲电缆进行材料和结构的优化、改进,解决传统电缆电磁屏蔽效果不佳,电缆较硬、弯曲力大,以及电缆重量重和易受外力作用损坏等问题。本发明电缆的屏蔽效能可达到70db以上；柔软性好,弯曲性能高；电缆重量轻,重量减少10%~15%；电缆力学性能优异,可经受外力作用而不被损坏,提高了电缆的使用安全性和使用寿命。完全满足现代武器装备系统对抗电磁脉冲电缆的日益提高的要求。(The invention discloses a light flexible high-energy electromagnetic pulse resistant special comprehensive cable which comprises a cable core, a shielding layer and a sheath layer, wherein the cable core is formed by stranding at least two wire cores, and the shielding layer sequentially comprises a first copper foil layer, a first alloy layer, a second copper foil layer, a second alloy layer and a third copper foil layer from inside to outside. The insulating layer and the sheath layer adopt high-performance thermoplastic elastomer TPV. The invention optimizes and improves the material and the structure of the traditional high-energy electromagnetic pulse resistant cable, and solves the problems of poor electromagnetic shielding effect, hard cable, large bending force, heavy weight of the cable, easy damage by external force and the like of the traditional cable. The shielding effectiveness of the cable can reach more than 70 db; the flexibility is good, and the bending performance is high; the cable is light in weight, and the weight is reduced by 10-15%; the cable has excellent mechanical property, can bear the action of external force without being damaged, and improves the use safety and the service life of the cable. Fully meeting the increasing requirements of modern weaponry systems against electromagnetic pulse cables.)

1. The utility model provides a special composite cable of light-duty flexible anti high energy electromagnetic pulse which characterized in that: comprises a cable core formed by twisting at least two wire cores (1), a shielding layer (2) and a sheath layer (3);

each wire core (1) comprises a conductor (11) and an insulating layer (12) tightly coated on the periphery of the conductor (11); the shielding layer (2) is tightly wrapped on the periphery of the cable core (1), the shielding layer (2) sequentially comprises a first copper foil layer (21), a first alloy layer (22), a second copper foil layer (23), a second alloy layer (24) and a third copper foil layer (25) from inside to outside, the first copper foil layer (21), the second copper foil layer (23) and the third copper foil layer (25) are copolymer type double-sided copper-plastic composite tapes, the first alloy layer (22) is copper-iron alloy wires which are uniformly woven in a crossed mode, the second alloy layer (24) is iron-nickel alloy wires which are uniformly woven in a crossed mode, the first copper foil layer (21) is wrapped on the insulating layer (12) through a longitudinal wrapping embossing process, the first copper foil layer (22) is tightly wrapped on the first copper foil layer (21), and the second copper foil layer (23) is wrapped on the first alloy layer (22) through a longitudinal wrapping embossing process, the second alloy layer (24) is tightly coated on the second copper foil layer (23), the third copper foil layer (25) is coated on the second alloy layer (24) through a longitudinal coating embossing process, and the sheath layer (3) is tightly coated on the shielding layer (2);

the insulation layer (12) and the sheath layer (3) are both made of thermoplastic elastomer TPV, and the thermoplastic elastomer TPV comprises the following raw materials in parts by weight:

10-60 parts of ethylene propylene diene monomer;

10-60 parts of nitrile rubber;

10-60 parts of polypropylene resin;

10-20 parts of compatibilization compound;

the ethylene propylene diene monomer is polymerized by three monomers of ethylene, propylene and ethylidene norbornene, wherein the content of the ethylidene norbornene is 4-12%, the content of the propylene is 20-40%, and the balance is ethylene;

the polypropylene resin is homopolymerized polypropylene and/or ethylene-propylene copolymer;

the compatibilization compound is formed by mixing a maleic anhydride grafted olefin copolymer, carboxyl nitrile rubber and an organic amine compound, wherein the maleic anhydride grafted olefin copolymer is one or a mixture of more of maleic anhydride grafted homo-polypropylene, maleic anhydride grafted ethylene-propylene copolymer, maleic anhydride grafted ethylene-butylene copolymer and maleic anhydride grafted ethylene-octene copolymer, and the organic amine compound is diethylenetriamine and/or triethylenetetramine, wherein the weight ratio of the maleic anhydride grafted olefin copolymer, the carboxyl nitrile rubber and the organic amine compound is 10-25: 1-20: 1-4.

2. The special light flexible high-energy electromagnetic pulse resistant composite cable according to claim 1, characterized in that: the copper-iron alloy is CuFe 5.

3. The special light flexible high-energy electromagnetic pulse resistant composite cable according to claim 1, characterized in that: the weaving density of the copper-iron alloy wires is 90% -95%.

4. The special light flexible high-energy electromagnetic pulse resistant composite cable according to claim 1, characterized in that: the weaving density of the iron-nickel alloy wires is 90-95%.

5. The special light flexible high-energy electromagnetic pulse resistant composite cable according to claim 1, characterized in that: the thermoplastic elastomer TPV further comprises a vulcanizing agent which is a mixture of phenolic resin and organic peroxide, wherein the phenolic resin accounts for 1.5-10 parts by weight, and the organic peroxide accounts for 0.3-4 parts by weight.

6. The special light flexible high-energy electromagnetic pulse resistant composite cable according to claim 5, characterized in that: the phenolic resin is one or more of phenol formaldehyde resin, tert-octyl phenol formaldehyde resin, bromomethyl alkyl phenol formaldehyde resin, alkyl phenol formaldehyde resin and tert-butyl phenol formaldehyde resin.

7. The special light flexible high-energy electromagnetic pulse resistant composite cable according to claim 5, characterized in that: the organic peroxide is benzoyl peroxide, 2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane, 2, 5-dimethyl-2, 5-di-tert-butylperoxy-3-hexyne, 2, 5-dimethyl-2, 5-di (peroxybenzoic acid) hexane, dicumyl peroxide and 1, 1-bis (tert-butylperoxy) cyclohexane.

8. The special light flexible high-energy electromagnetic pulse resistant composite cable according to claim 1, characterized in that: the thermoplastic elastomer TPV is characterized by also comprising 0.05-0.1 part of vulcanization accelerator which is stannous chloride.

Technical Field

The invention relates to the field of cables, in particular to a light flexible high-energy electromagnetic pulse resistant special comprehensive cable.

Background

With the rapid development of the current science and technology and the urgent need of the development and construction of national defense modernization in China, the communication industry is developing towards high technology and high speed. The technical level of the communication industry represents and symbolizes the national defense strength, in order to meet the requirement of the high-speed development of the national defense modernization, the matched products are continuously updated, the electrification, automation and systematization degree of the equipment is continuously improved, the use amount of the cable used as the blood vessel and nerve is increasingly large, and the higher requirements on the quality level and the safety and the reliability of the product are provided. Nowadays, the communication industry is developed vigorously, and the development of high-performance cables has important functions and significance for meeting the requirement of the modernization of national defense and meeting the high-speed development.

The rapid development of electronic technologies such as aerospace, ground vehicles and the like and the continuous improvement of integrated informatization technologies, electronic information safety is increasingly emphasized in modern technologies. Under the condition of fully utilizing a microelectronic program control technology, the modern equipment system achieves high informatization and intelligence. However, the micro-electronic program control system is very vulnerable to the interference impact of the external electromagnetic field, so the electromagnetic protection is very important.

The research on how to resist the high-energy electromagnetic pulse becomes the key point of the research of scholars at home and abroad. In recent years, the research on the anti-electromagnetic pulse cable is developing towards the direction of light weight, miniaturization, flexibility, high strength and higher anti-high-energy electromagnetic interference. The common high-energy electromagnetic pulse resistant cable generally adopts fluoroplastic as an insulating layer material, a tinned copper wire woven structure, a silvered copper wire woven structure or an aluminum-plastic composite tape wrapped structure is used as a shielding layer, and polyurethane is used as a sheath structure.

Therefore, how to obtain a light flexible special composite cable with stronger high-energy electromagnetic interference resistance is the research subject of the invention.

Disclosure of Invention

The invention provides a light flexible high-energy electromagnetic pulse resistant special comprehensive cable and aims to solve the problem that the performance of an existing special comprehensive cable cannot meet the requirement.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a special composite cable of light-duty flexible anti high energy electromagnetic pulse which characterized in that: the cable comprises a cable core formed by stranding at least two wire cores, a shielding layer and a sheath layer;

each wire core comprises a conductor and an insulating layer tightly coated on the periphery of the conductor; the shielding layer is tightly coated on the periphery of the cable core, the shielding layer sequentially comprises a first copper foil layer, a first alloy layer, a second copper foil layer, a second alloy layer and a third copper foil layer from inside to outside, the first copper foil layer, the second copper foil layer and the third copper foil layer are all copolymer type double-sided copper-plastic composite belts, the first alloy layer is copper-iron alloy wires which are uniformly woven in a crossed mode, the second alloy layer is iron-nickel alloy wires which are uniformly woven in a crossed mode, the first copper foil layer is wrapped on the insulating layer through a longitudinal wrapping embossing process, the first alloy layer is tightly wrapped on the first copper foil layer, the second copper foil layer is wrapped on the first alloy layer through a longitudinal wrapping embossing process, the second alloy layer is tightly wrapped on the second copper foil layer, the third copper foil layer is wrapped on the second alloy layer through a longitudinal wrapping embossing process, and the sheath layer is tightly wrapped on the shielding layer;

the insulation layer and the sheath layer are both made of thermoplastic elastomer TPV, and the thermoplastic elastomer TPV comprises the following raw materials in parts by weight:

10-60 parts of ethylene propylene diene monomer;

10-60 parts of nitrile rubber;

10-60 parts of polypropylene resin;

10-20 parts of compatibilization compound;

the ethylene propylene diene monomer is polymerized by three monomers of ethylene, propylene and ethylidene norbornene, wherein the content of the ethylidene norbornene is 4-12%, the content of the propylene is 20-40%, and the balance is ethylene;

the polypropylene resin is homopolymerized polypropylene and/or ethylene-propylene copolymer;

the compatibilization compound is formed by mixing a maleic anhydride grafted olefin copolymer, carboxyl nitrile rubber and an organic amine compound, wherein the maleic anhydride grafted olefin copolymer is one or a mixture of more of maleic anhydride grafted homo-polypropylene, maleic anhydride grafted ethylene-propylene copolymer, maleic anhydride grafted ethylene-butylene copolymer and maleic anhydride grafted ethylene-octene copolymer, and the organic amine compound is diethylenetriamine and/or triethylenetetramine, wherein the weight ratio of the maleic anhydride grafted olefin copolymer, the carboxyl nitrile rubber and the organic amine compound is 10-25: 1-20: 1-4.

1. In the scheme, the copper-iron alloy is CuFe 5.

2. In the scheme, the weaving density of the copper-iron alloy wires is 90-95%.

3. In the scheme, the weaving density of the iron-nickel alloy wires is 90-95%.

4. In the scheme, the raw materials of the thermoplastic elastomer TPV further comprise a vulcanizing agent, wherein the vulcanizing agent is a mixture of phenolic resin and organic peroxide, the weight part of the phenolic resin is 1.5-10, and the weight part of the organic peroxide is 0.3-4.

5. In the scheme, the phenolic resin is one or more of phenol formaldehyde resin, tert-octyl phenol formaldehyde resin, bromomethyl alkylphenol formaldehyde resin, alkylphenol formaldehyde resin and tert-butyl phenol formaldehyde resin.

6. In the above scheme, the organic peroxide is benzoyl peroxide, 2, 5-dimethyl-2, 5-bis (t-butylperoxy) hexane, 2, 5-dimethyl-2, 5-di-t-butylperoxy-3-hexyne, 2, 5-dimethyl-2, 5-di (peroxybenzoic acid) hexane, dicumyl peroxide, 1-bis (t-butylperoxy) cyclohexane.

7. In the scheme, the thermoplastic elastomer TPV further comprises 0.05-0.1 part of vulcanization accelerator, wherein the vulcanization accelerator is stannous chloride.

Description of the invention:

1. the copper foil of shielding layer is the compound area of copolymerization type two-sided copper plastics (this is commercial material, and here is not repeated), and the two-sided copper layer has improved the holistic anti high energy electromagnetic pulse performance of cable, through indulging package embossing technology promote the cable receive external force when tensile compression strength and bending property, solved the cable receive external force effect fragile and around package technology make the cable harden, the not easy problem of bending.

2. The copper-iron alloy wire is a CuFe5 soft-state high-conductivity copper-iron alloy wire, and the iron-nickel alloy wire is a high-permeability iron-nickel alloy wire.

3. The conductor is made of silver-plated silver-copper alloy wires through small-pitch stranding; the insulating layer wraps the outside of the conductor and is extruded into an insulating wire core. Two sinle silks adopt back twist stranding equipment transposition, and the stranding pitch is 80 + -5 mm, and the packing adopts the netted filling rope of non-hygroscopicity, adopts non-hygroscopicity band around the covering, has guaranteed the circularity and the homogeneity of stranding sinle silk. This is the prior art and will not be described herein.

4. The sheath layer and the insulating layer are made of high-performance thermoplastic elastomer TPV materials through extrusion. The high-performance thermoplastic elastomer TPV adopts a composite system of Ethylene Propylene Diene Monomer (EPDM), nitrile rubber (NBR) and polypropylene resin, and has high elasticity, oil resistance, good mechanical property and product appearance of rubber.

5. The compatibilizer compound in the raw materials of the thermoplastic elastomer TPV has a skeleton structure of ethylene propylene diene monomer EPDM, nitrile rubber NBR and polypropylene resin through in-situ reaction to generate a macromolecular compatibilizer, so that the compatibilizer compound can effectively form a homogeneous phase with a matrix material, and the purpose of compatibilization is achieved.

6. The vulcanizing agent phenolic resin in the raw materials of the thermoplastic elastomer TPV can be used as a vulcanizing agent and can also be chemically reacted with the macromolecular of the compatibilizer, so that the thermoplastic elastomer has double functions, and the peroxide of the vulcanizing agent can promote more crosslinking points to be generated among the macromolecules, so that the thermoplastic elastomer has more excellent mechanical properties.

The invention has the beneficial effects that:

(1) the shielding layer of the invention adopts a composite shielding layer consisting of copper foil, copper-iron alloy, copper foil, iron-nickel alloy and copper foil. The shielding function of the shielding layer to the electromagnetic field has two functions, the first function is that the energy of the electromagnetic field generates eddy current when passing through the shielding layer and becomes heat to be consumed; the second mode is that the energy of the electromagnetic field is consumed by the reflection action of the shielding layer and the interface formed by the shielding layer with the metal material with different impedance characteristics. According to the principle, a plurality of metal materials and non-metals made of different materials are used as medium materials during the design of the shielding layer, and a comprehensive shielding body is combined according to specific requirements. The materials and the arrangement sequence (from inside to outside) of the five-layer shield are determined through repeated experimental verification: the copper foil wrapping, the copper-iron alloy weaving, the copper foil wrapping, the iron-nickel alloy weaving and the copper foil wrapping form five reflecting surfaces and two absorbing layers, and the optimal shielding effect can be achieved. The shielding effectiveness of the cable reaches the requirement of more than or equal to 70 db.

(2) The copper foil of the shielding layer is optimized to be a grain-binding longitudinal wrapping process through a common wrapping process, so that the problem that the whole cable is hardened due to wrapping is avoided, the flexibility of the cable is greatly improved, and the bending performance is good; and the insulating and sheathing material adopts thermoplastic TPV elastomer, which has high elasticity and flexibility (Shore A75 +/-2) of rubber, thereby further improving the bending property of the cable.

(3) The optimal combination and sequencing of the shielding layers ensure that the weight of the shielding layer material is the lightest when the cable achieves the same shielding effect; the insulating and sheath material adopts thermoplastic elastomer TPV (density is 1.0-1.1 g/cm 3), and the density is lower than that of fluoroplastic and polyurethane; the whole weight of the cable is reduced by 10-15%.

(4) The shielding layer copper foil adopts a grain-binding longitudinal wrapping process, so that the problem that the cable is damaged due to tensile and compression deformation caused by external force is greatly improved; the high-performance thermoplastic TPV elastomer sheath has excellent mechanical properties, the tensile strength is more than or equal to 25MPa, and the elongation at break is 500-600%; the cable has excellent overall mechanical property, the safety in the use process of the cable is improved, and the service life of the cable is prolonged.

Drawings

FIG. 1 is a schematic cross-sectional view of a light flexible high-energy electromagnetic pulse resistant special composite cable according to the present invention;

in the above drawings: 1. a wire core; 11. a conductor; 12. an insulating layer; 2. a shielding layer; 21. a first copper foil layer; 22. a first alloy layer; 23. a second copper foil layer; 24. a second alloy layer; 25. a third copper foil layer; 3. a sheath layer.

Detailed Description

The invention is further described with reference to the following figures and examples:

example (b): light flexible high-energy electromagnetic pulse resistant special composite cable

As shown in the figure, a special synthetic cable of light-duty flexible anti high energy electromagnetic pulse which characterized in that: the cable comprises a cable core formed by twisting at least two wire cores 1, a shielding layer 2 and a sheath layer 3;

each wire core 1 comprises a conductor 11 and an insulating layer 12 tightly wrapped on the periphery of the conductor 11; the shielding layer 2 is tightly wrapped on the periphery of the cable core 1, the shielding layer 2 sequentially comprises a first copper foil layer 21, a first alloy layer 22, a second copper foil layer 23, a second alloy layer 24 and a third copper foil layer 25 from inside to outside, the first copper foil layer 21, the second copper foil layer 23 and the third copper foil layer 25 are copolymer type double-sided copper-plastic composite tapes, the first alloy layer 22 is a copper-iron alloy wire which is uniformly woven in a crossed mode, the second alloy layer 24 is an iron-nickel alloy wire which is uniformly woven in a crossed mode, the first copper foil layer 21 is wrapped on the insulating layer 12 through a longitudinal wrapping embossing process, the first alloy layer 22 is tightly wrapped on the first copper foil layer 21, the second copper foil layer 23 is wrapped on the first alloy layer 22 through a longitudinal wrapping embossing process, the second alloy layer 24 is tightly wrapped on the second copper foil layer 23, and the third copper foil layer 25 is wrapped on the second alloy layer 24 through a longitudinal embossing process, the sheath layer 3 is tightly coated on the shielding layer 2;

the insulating layer 12 and the sheath layer 3 are both made of thermoplastic elastomer TPV, and the thermoplastic elastomer TPV comprises the following raw materials in parts by weight:

10-60 parts of ethylene propylene diene monomer;

10-60 parts of nitrile rubber;

10-60 parts of polypropylene resin;

10-20 parts of compatibilization compound;

the ethylene propylene diene monomer is polymerized by three monomers of ethylene, propylene and ethylidene norbornene, wherein the content of the ethylidene norbornene is 4-12%, the content of the propylene is 20-40%, and the balance is ethylene;

the polypropylene resin is homopolymerized polypropylene and/or ethylene-propylene copolymer;

the compatibilization compound is formed by mixing a maleic anhydride grafted olefin copolymer, carboxyl nitrile rubber and an organic amine compound, wherein the maleic anhydride grafted olefin copolymer is one or a mixture of more of maleic anhydride grafted homo-polypropylene, maleic anhydride grafted ethylene-propylene copolymer, maleic anhydride grafted ethylene-butylene copolymer and maleic anhydride grafted ethylene-octene copolymer, and the organic amine compound is diethylenetriamine and/or triethylenetetramine, wherein the weight ratio of the maleic anhydride grafted olefin copolymer, the carboxyl nitrile rubber and the organic amine compound is 10-25: 1-20: 1-4.

The thermoplastic elastomer TPV further comprises a vulcanizing agent which is a mixture of phenolic resin and organic peroxide, wherein the phenolic resin accounts for 1.5-10 parts by weight, and the organic peroxide accounts for 0.3-4 parts by weight.

The phenolic resin is one or more of phenol formaldehyde resin, tert-octyl phenol formaldehyde resin, bromomethyl alkyl phenol formaldehyde resin, alkyl phenol formaldehyde resin and tert-butyl phenol formaldehyde resin.

The organic peroxide is benzoyl peroxide, 2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane, 2, 5-dimethyl-2, 5-di-tert-butylperoxy-3-hexyne, 2, 5-dimethyl-2, 5-di (peroxybenzoic acid) hexane, dicumyl peroxide and 1, 1-bis (tert-butylperoxy) cyclohexane.

The thermoplastic elastomer TPV is characterized by also comprising 0.05-0.1 part of vulcanization accelerator which is stannous chloride.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.