阅读说明：本技术 一种高性能军用5g通讯装置用硅橡胶软电缆 (High-performance silicon rubber flexible cable for military 5G communication device ) 是由 韩俊宝 周俊 朱元忠 陈安鹏 郑斌 高美玲 陶恒莹 朱道进 于 2021-07-26 设计创作，主要内容包括：本发明属于电缆材料技术领域,尤其是一种高性能军用5G通讯装置用硅橡胶软电缆,解决了现有技术中军用电缆综合性能有待提高,尤其是柔韧性及阻燃性不足,导致其使用寿命有限的问题,所述高性能军用5G通讯装置用硅橡胶软电缆,从内到外,依次包括导体,内屏蔽层、绝缘层、外屏蔽层和外护套层；导体由软铜线绞合紧实制得；内屏蔽层为金属屏蔽层；绝缘层采用辐射交联无卤高阻燃聚烯烃材料制成；外屏蔽层为半导体屏蔽层；外护套层为硅橡胶护套层。本发明所得软电缆柔软性性、耐磨性、耐候性和耐腐性好,其具有很高抗拉强度、拉伸强度和抗冲击强度,热膨胀系数低,使用安全性高,使用寿命长,可广泛用于军事领域。(The invention belongs to the technical field of cable materials, in particular to a high-performance silicon rubber flexible cable for a military 5G communication device, which solves the problems that the comprehensive performance of the military cable in the prior art needs to be improved, especially the flexibility and the flame retardance are insufficient, so that the service life of the military cable is limited; the conductor is made by stranding and compacting annealed copper wires; the inner shielding layer is a metal shielding layer; the insulating layer is made of radiation crosslinking halogen-free high-flame-retardant polyolefin material; the outer shielding layer is a semiconductor shielding layer; the outer sheath layer is a silicon rubber sheath layer. The flexible cable obtained by the invention has good flexibility, wear resistance, weather resistance and corrosion resistance, high tensile strength, tensile strength and impact strength, low thermal expansion coefficient, high use safety and long service life, and can be widely used in the military field.)

1. A high-performance silicon rubber flexible cable for a military 5G communication device is characterized by sequentially comprising a conductor, an inner shielding layer, an insulating layer, an outer shielding layer and an outer sheath layer from inside to outside;

the conductor is formed by twisting and compacting 10-20 strands of annealed copper wires with the diameter of 0.55-0.75 mm;

the inner shielding layer is a metal shielding layer;

the insulating layer is made of radiation crosslinking halogen-free high-flame-retardant polyolefin material;

the outer shielding layer is a semiconductor shielding layer;

the outer sheath layer is a silicon rubber sheath layer.

2. The silicone rubber flexible cable for high-performance military 5G communication equipment as claimed in claim 1, wherein the metal shielding layer is a diamond-shaped mesh structure with a density of 75-83% formed by weaving silicon-germanium alloy monofilaments with a diameter of 0.5-1.2 mm.

3. The silicone rubber flexible cable for high-performance military 5G communication equipment as claimed in claim 1, wherein the semiconductive shielding layer is formed by coating rutile type titanium dioxide film with thickness of 0.8-1.5 mm.

4. The silicone rubber flexible cable for high-performance military 5G communication equipment according to claim 1, wherein the outer sheath layer comprises the following raw materials in parts by weight: 70-80 parts of polymethylhydrosiloxane, 20-30 parts of dimethylhydroxysilicone oil, 0.01-0.03 part of catalyst, 0.5-1 part of foaming agent, 2-3 parts of flame retardant additive, 1-3 parts of trifluoroethyl methacrylate, 2-5 parts of polyvinyl butyral and 1-3 parts of vinyl trimethoxy silane.

5. The silicone rubber flexible cable for high-performance military 5G communication equipment according to claim 4, wherein the catalyst is a platinum-rhodium catalyst supported on porous alumina.

6. The silicone rubber flexible cable for high-performance military 5G communication equipment as claimed in claim 4, wherein the foaming agent is one of azodicarbonamide, azodiisobutyronitrile or dinitrosopentamethylenetetramine.

7. The silicone rubber flexible cable for the high-performance military 5G communication device, according to claim 4, wherein the flame retardant additive is prepared by compounding diethylenetriamine pentamethylenephosphonic acid, tris (2-chloroethyl) phosphate and vinylene carbonate in a mass ratio of 3:7: 1.

8. A method for preparing the high-performance silicon rubber flexible cable for military 5G communication equipment according to any one of claims 1 to 7, which comprises the following steps:

s1, weighing polymethylhydrosiloxane, dimethylhydroxysiloxane oil, a catalyst, a foaming agent, a flame retardant additive, trifluoroethyl methacrylate, polyvinyl butyral and vinyl trimethoxy silane for later use;

s2, adding polymethylhydrosiloxane, dimethylhydroxysiloxane oil and a catalyst into a reaction kettle, controlling the pressure of the reaction kettle to be 0.5-2.5MPa, stirring for 5-10min, continuously stirring while sequentially adding a foaming agent, a flame retardant additive, trifluoroethyl methacrylate, polyvinyl butyral and vinyl trimethoxy silane, standing for 20-30min after the raw materials are added and uniformly stirred, and finally extruding and molding by an extruder to obtain an outer sheath layer;

and S3, sequentially sleeving the conductor, the inner shielding layer, the insulating layer, the outer shielding layer and the outer sheath layer from inside to outside to obtain the required high-performance silicon rubber flexible cable for the military 5G communication device.

Technical Field

The invention relates to the technical field of cable materials, in particular to a high-performance silicon rubber flexible cable for a military 5G communication device.

Background

The electric wire and cable is an indispensable basic equipment for transmitting electric energy, transmitting information and manufacturing equipment such as various motors, electric appliances, instruments, automobiles, machine tools and the like, and is a necessary basic product in the electrification and information-based society. In 2012, China surpasses the United states and becomes the first major wire and cable producing country in the world, and the industry production value is second to the automobile industry in the electrical and electronic industry. As an important basic industry, the wire and cable industry is like 'blood vessels' and 'nerves' of national economy, plays an important role in national economy of China, and plays a role in matching national economy strut industry of various industries.

Due to the particularity of the use environment of the military cable network and the information neural network status in the military model system, the military cable network has to have high quality and high reliability, and the use process is guaranteed to be completely lost. The working environment of the military cable network requires that the military cable network has certain folding, twisting, pulling, pressing and other performances, high and low temperature resistance, shock vibration resistance and other capabilities. In the prior art, the comprehensive performance of the military cable needs to be improved, and particularly, the service life of the military cable is limited due to insufficient flexibility and flame retardance. Based on the above statement, the invention provides a high-performance silicon rubber flexible cable for military 5G communication devices.

Disclosure of Invention

The invention aims to solve the problems that the comprehensive performance of a military cable needs to be improved, and particularly the service life of the military cable is limited due to insufficient flexibility and flame retardance in the prior art, and provides a high-performance silicone rubber flexible cable for a military 5G communication device.

A high-performance silicon rubber flexible cable for military 5G communication devices sequentially comprises a conductor, an inner shielding layer, an insulating layer, an outer shielding layer and an outer sheath layer from inside to outside;

the conductor is formed by twisting and compacting 10-20 strands of annealed copper wires with the diameter of 0.55-0.75 mm;

the inner shielding layer is a metal shielding layer;

the insulating layer is made of radiation crosslinking halogen-free high-flame-retardant polyolefin material;

the outer shielding layer is a semiconductor shielding layer;

the outer sheath layer is a silicon rubber sheath layer.

Preferably, the metal shielding layer is a diamond-shaped mesh structure with the density of 75-83% formed by weaving silicon-germanium alloy monofilaments with the diameter of 0.5-1.2 mm.

Preferably, the semiconductor shielding layer is formed by coating a rutile type titanium dioxide film with the thickness of 0.8-1.5 mm.

Preferably, the outer sheath layer comprises the following raw materials in parts by weight: 70-80 parts of polymethylhydrosiloxane, 20-30 parts of dimethylhydroxysilicone oil, 0.01-0.03 part of catalyst, 0.5-1 part of foaming agent, 2-3 parts of flame retardant additive, 1-3 parts of trifluoroethyl methacrylate, 2-5 parts of polyvinyl butyral and 1-3 parts of vinyl trimethoxy silane.

Preferably, the catalyst is a platinum-rhodium catalyst supported on porous alumina.

Preferably, the foaming agent is one of azodicarbonamide, azodiisobutyronitrile or dinitrosopentamethylenetetramine.

Preferably, the flame retardant additive is prepared by compounding diethylenetriamine pentamethylene phosphonic acid, tris (2-chloroethyl) phosphate and vinylene carbonate according to the mass ratio of 3:7: 1.

The invention also provides a preparation method of the high-performance silicon rubber flexible cable for the military 5G communication device, which comprises the following steps:

s1, weighing polymethylhydrosiloxane, dimethylhydroxysiloxane oil, a catalyst, a foaming agent, a flame retardant additive, trifluoroethyl methacrylate, polyvinyl butyral and vinyl trimethoxy silane for later use;

s2, adding polymethylhydrosiloxane, dimethylhydroxysiloxane oil and a catalyst into a reaction kettle, controlling the pressure of the reaction kettle to be 0.5-2.5MPa, stirring for 5-10min, continuously stirring while sequentially adding a foaming agent, a flame retardant additive, trifluoroethyl methacrylate, polyvinyl butyral and vinyl trimethoxy silane, standing for 20-30min after the raw materials are added and uniformly stirred, and finally extruding and molding by an extruder to obtain an outer sheath layer;

and S3, sequentially sleeving the conductor, the inner shielding layer, the insulating layer, the outer shielding layer and the outer sheath layer from inside to outside to obtain the required high-performance silicon rubber flexible cable for the military 5G communication device.

The invention provides a high-performance silicon rubber flexible cable for a military 5G communication device, which has the following beneficial effects:

1. according to the invention, the conductor, the inner shielding layer, the insulating layer, the outer shielding layer and the outer sheath layer are sequentially sleeved from inside to outside to prepare the required high-performance silicon rubber flexible cable for the military 5G communication device.

2. According to the invention, polymethyl hydrogen siloxane, dimethyl hydroxyl silicone oil and a catalyst are pre-reacted, then a foaming agent, a flame retardant additive, trifluoroethyl methacrylate, polyvinyl butyral and vinyl trimethoxy silane are added and mixed, and finally the mixture is extruded and molded by an extruder to obtain the outer sheath layer, wherein the obtained outer sheath layer has the advantages of strong pressure resistance, high bending resistance and good flexibility; the flame retardant additive is prepared by compounding diethylenetriamine penta (methylene phosphonic acid), phosphoric acid tri (2-chloroethyl) ester and vinylene carbonate, is used for flame retardance of cables, is small in addition amount, good in flame retardant effect, free of halogen, low in smoke and good in self-extinguishing property, and can improve the flame retardance of the outer sheath layer and the water resistance and cold resistance of the outer sheath layer.

Detailed Description

The present invention will be further illustrated with reference to the following specific examples.

Example one

The invention provides a high-performance silicon rubber flexible cable for a military 5G communication device, which sequentially comprises a conductor, an inner shielding layer, an insulating layer, an outer shielding layer and an outer sheath layer from inside to outside;

wherein the conductor is formed by stranding and compacting 10 strands of annealed copper wires with the diameter of 0.75 mm;

the inner shielding layer is a metal shielding layer, and is a rhombic net structure with the density of 75% woven by silicon-germanium alloy monofilaments with the diameter of 0.5 mm;

the insulating layer is made of radiation crosslinking halogen-free high-flame-retardant polyolefin material;

the outer shielding layer is a semiconductor shielding layer and is formed by coating a rutile type titanium dioxide film with the thickness of 0.8 mm;

the outer sheath layer is a silicon rubber sheath layer and specifically comprises the following raw materials in parts by weight: 70 parts of polymethylhydrosiloxane, 20 parts of dimethylhydroxysilicone oil, 0.01 part of catalyst, 0.5 part of foaming agent, 2 parts of flame retardant additive, 1 part of trifluoroethyl methacrylate, 2 parts of polyvinyl butyral and 1 part of vinyl trimethoxy silane;

wherein the catalyst is a platinum-rhodium catalyst loaded on porous alumina; the foaming agent is azodicarbonamide; the flame retardant additive is prepared by compounding diethylenetriamine pentamethylene phosphonic acid, phosphoric acid tri (2-chloroethyl) ester and vinylene carbonate according to the mass ratio of 3:7: 1.

The invention also provides a preparation method of the high-performance silicon rubber flexible cable for the military 5G communication device, which comprises the following steps:

s1, weighing polymethylhydrosiloxane, dimethylhydroxysiloxane oil, a catalyst, a foaming agent, a flame retardant additive, trifluoroethyl methacrylate, polyvinyl butyral and vinyl trimethoxy silane for later use;

s2, adding polymethylhydrosiloxane, dimethylhydroxysiloxane oil and a catalyst into a reaction kettle together, controlling the pressure of the reaction kettle to be 0.5MPa, stirring for 5min, continuously stirring while sequentially adding a foaming agent, a flame-retardant additive, trifluoroethyl methacrylate, polyvinyl butyral and vinyl trimethoxy silane, standing for 20min after the raw materials are added and uniformly stirred and mixed, and finally extruding and molding by an extruder to obtain an outer sheath layer;

and S3, sequentially sleeving the conductor, the inner shielding layer, the insulating layer, the outer shielding layer and the outer sheath layer from inside to outside to obtain the required high-performance silicon rubber flexible cable for the military 5G communication device.

Example two

The invention provides a high-performance silicon rubber flexible cable for a military 5G communication device, which sequentially comprises a conductor, an inner shielding layer, an insulating layer, an outer shielding layer and an outer sheath layer from inside to outside;

wherein the conductor is formed by twisting and compacting 15 strands of annealed copper wires with the diameter of 0.65 mm;

the inner shielding layer is a metal shielding layer, and is a rhombic net structure with the density of 78% woven by silicon-germanium alloy monofilaments with the diameter of 0.8 mm;

the insulating layer is made of radiation crosslinking halogen-free high-flame-retardant polyolefin material;

the outer shielding layer is a semiconductor shielding layer and is formed by coating a rutile type titanium dioxide film with the thickness of 1.2 mm;

the outer sheath layer is a silicon rubber sheath layer and specifically comprises the following raw materials in parts by weight: 75 parts of polymethylhydrosiloxane, 25 parts of dimethylhydroxysilicone oil, 0.02 part of catalyst, 0.8 part of foaming agent, 2.5 parts of flame retardant additive, 2 parts of trifluoroethyl methacrylate, 3.5 parts of polyvinyl butyral and 2 parts of vinyl trimethoxy silane;

wherein the catalyst is a platinum-rhodium catalyst loaded on porous alumina; the foaming agent is azodiisobutyronitrile; the flame retardant additive is prepared by compounding diethylenetriamine pentamethylene phosphonic acid, phosphoric acid tri (2-chloroethyl) ester and vinylene carbonate according to the mass ratio of 3:7: 1.

The invention also provides a preparation method of the high-performance silicon rubber flexible cable for the military 5G communication device, which comprises the following steps:

s1, weighing polymethylhydrosiloxane, dimethylhydroxysiloxane oil, a catalyst, a foaming agent, a flame retardant additive, trifluoroethyl methacrylate, polyvinyl butyral and vinyl trimethoxy silane for later use;

s2, adding polymethylhydrosiloxane, dimethylhydroxysiloxane oil and a catalyst into a reaction kettle together, controlling the pressure of the reaction kettle to be 1.5MPa, stirring for 8min, continuously stirring while sequentially adding a foaming agent, a flame-retardant additive, trifluoroethyl methacrylate, polyvinyl butyral and vinyl trimethoxy silane, standing for 25min after the raw materials are added and uniformly stirred and mixed, and finally extruding and molding by an extruder to obtain an outer sheath layer;

and S3, sequentially sleeving the conductor, the inner shielding layer, the insulating layer, the outer shielding layer and the outer sheath layer from inside to outside to obtain the required high-performance silicon rubber flexible cable for the military 5G communication device.

EXAMPLE III

The invention provides a high-performance silicon rubber flexible cable for a military 5G communication device, which sequentially comprises a conductor, an inner shielding layer, an insulating layer, an outer shielding layer and an outer sheath layer from inside to outside;

wherein the conductor is formed by stranding and compacting 20 strands of annealed copper wires with the diameter of 0.55 mm;

the inner shielding layer is a metal shielding layer, and specifically is a diamond-shaped net structure with the density of 83% woven by silicon-germanium alloy monofilaments with the diameter of 1.2 mm;

the insulating layer is made of radiation crosslinking halogen-free high-flame-retardant polyolefin material;

the outer shielding layer is a semiconductor shielding layer and is formed by coating a rutile type titanium dioxide film with the thickness of 1.5 mm;

the outer sheath layer is a silicon rubber sheath layer and specifically comprises the following raw materials in parts by weight: 80 parts of polymethylhydrosiloxane, 30 parts of dimethylhydroxysilicone oil, 0.03 part of catalyst, 1 part of foaming agent, 3 parts of flame retardant additive, 3 parts of trifluoroethyl methacrylate, 5 parts of polyvinyl butyral and 3 parts of vinyl trimethoxy silane;

wherein the catalyst is a platinum-rhodium catalyst loaded on porous alumina; the foaming agent is dinitrosopentamethylenetetramine; the flame retardant additive is prepared by compounding diethylenetriamine pentamethylene phosphonic acid, phosphoric acid tri (2-chloroethyl) ester and vinylene carbonate according to the mass ratio of 3:7: 1.

The invention also provides a preparation method of the high-performance silicon rubber flexible cable for the military 5G communication device, which comprises the following steps:

s1, weighing polymethylhydrosiloxane, dimethylhydroxysiloxane oil, a catalyst, a foaming agent, a flame retardant additive, trifluoroethyl methacrylate, polyvinyl butyral and vinyl trimethoxy silane for later use;

s2, adding polymethylhydrosiloxane, dimethylhydroxysiloxane oil and a catalyst into a reaction kettle together, controlling the pressure of the reaction kettle to be 2.5MPa, stirring for 10min, continuously stirring while sequentially adding a foaming agent, a flame-retardant additive, trifluoroethyl methacrylate, polyvinyl butyral and vinyl trimethoxy silane, standing for 30min after the raw materials are added and uniformly stirred and mixed, and finally extruding and molding by an extruder to obtain an outer sheath layer;

and S3, sequentially sleeving the conductor, the inner shielding layer, the insulating layer, the outer shielding layer and the outer sheath layer from inside to outside to obtain the required high-performance silicon rubber flexible cable for the military 5G communication device.

Comparative example 1

The invention provides a high-performance silicon rubber flexible cable for a military 5G communication device, which sequentially comprises a conductor, an inner shielding layer, an insulating layer, an outer shielding layer and an outer sheath layer from inside to outside;

wherein the conductor is formed by stranding and compacting 10 strands of annealed copper wires with the diameter of 0.75 mm;

the inner shielding layer is a metal shielding layer, and is a rhombic net structure with the density of 75% woven by silicon-germanium alloy monofilaments with the diameter of 0.5 mm;

the insulating layer is made of radiation crosslinking halogen-free high-flame-retardant polyolefin material;

the outer shielding layer is a semiconductor shielding layer and is formed by coating a rutile type titanium dioxide film with the thickness of 0.8 mm;

the outer sheath layer is a silicon rubber sheath layer and specifically comprises the following raw materials in parts by weight: 70 parts of polymethylhydrosiloxane, 20 parts of dimethylhydroxysilicone oil, 0.01 part of catalyst, 0.5 part of foaming agent, 2 parts of flame retardant additive, 1 part of trifluoroethyl methacrylate, 2 parts of polyvinyl butyral and 1 part of vinyl trimethoxy silane;

wherein the catalyst is a platinum-rhodium catalyst loaded on porous alumina; the foaming agent is azodicarbonamide; the flame retardant additive is tris (2-chloroethyl) phosphate.

The invention also provides a preparation method of the high-performance silicon rubber flexible cable for the military 5G communication device, which comprises the following steps:

s1, weighing polymethylhydrosiloxane, dimethylhydroxysiloxane oil, a catalyst, a foaming agent, a flame retardant additive, trifluoroethyl methacrylate, polyvinyl butyral and vinyl trimethoxy silane for later use;

s2, adding polymethylhydrosiloxane, dimethylhydroxysiloxane oil and a catalyst into a reaction kettle together, controlling the pressure of the reaction kettle to be 0.5MPa, stirring for 5min, continuously stirring while sequentially adding a foaming agent, a flame-retardant additive, trifluoroethyl methacrylate, polyvinyl butyral and vinyl trimethoxy silane, standing for 20min after the raw materials are added and uniformly stirred and mixed, and finally extruding and molding by an extruder to obtain an outer sheath layer;

and S3, sequentially sleeving the conductor, the inner shielding layer, the insulating layer, the outer shielding layer and the outer sheath layer from inside to outside to obtain the required high-performance silicon rubber flexible cable for the military 5G communication device.

And (3) performance testing:

the military cables prepared in the first and third embodiments of the invention and the first embodiment of the invention are subjected to performance tests, and the detection results are as follows:

the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.