Polyethylene sheath material for communication cable

A polyethylene sheath, high-density polyethylene technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of strength, flame retardancy, high temperature and oxidation resistance that cannot meet the requirements of society, and improve the anti-oxidation resistance. The effect of light weather resistance, stable performance and high tensile strength

Inactive Publication Date: 2018-06-12
管莉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, polyethylene as a cable sheath material cannot meet the requirements of the society in terms of strength, flame retardancy, high temperature resistance and oxidation resistance, and further research and development are needed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A polyethylene sheath material for communication cables, which is prepared from the following raw materials in parts by weight:

[0017] 0.2 parts of anti-aging agent CPPD, 0.3 parts of antioxidant 1010, 1 part of zinc stearate, 1 part of glass fiber, 2 parts of molybdenum disulfide, 2 parts of boron nitride, 2 parts of silicon carbide, 2 parts of aluminum oxide, 3 parts of tetrasulfide Dipentamethylenethiuram, 3 parts magnesium hydroxide, 3 parts titanate crosslinker, 5 parts dioctyl sebacate, 6 parts polyethylene wax, 15 parts ethylene-vinyl acetate copolymer, 20 Parts polycarbonate, 40 parts low-density polyethylene, 50 parts high-density polyethylene;

[0018] Its preparation method comprises the following processing steps:

[0019] Take dioctyl sebacate, polyethylene wax, ethylene-vinyl acetate copolymer, polycarbonate, low-density polyethylene and high-density polyethylene, mix evenly to obtain a mixture, and place the mixture in a single-screw extruder Co-blend...

Embodiment 2

[0022] A polyethylene sheath material for communication cables, which is prepared from the following raw materials in parts by weight:

[0023] 0.3 parts of anti-aging agent CPPD, 0.5 parts of antioxidant 1010, 2 parts of zinc stearate, 2 parts of glass fiber, 3 parts of molybdenum disulfide, 3 parts of boron nitride, 3 parts of silicon carbide, 3 parts of aluminum oxide, 5 parts of tetrasulfide Dipentamethylenethiuram, 5 parts magnesium hydroxide, 5 parts titanate crosslinker, 7 parts dioctyl sebacate, 9 parts polyethylene wax, 22 parts ethylene-vinyl acetate copolymer, 30 Parts polycarbonate, 60 parts low-density polyethylene, 70 parts high-density polyethylene;

[0024] Its preparation method comprises the following processing steps:

[0025] Take dioctyl sebacate, polyethylene wax, ethylene-vinyl acetate copolymer, polycarbonate, low-density polyethylene and high-density polyethylene, mix evenly to obtain a mixture, and place the mixture in a single-screw extruder Co-ble...

Embodiment 3

[0028] The sheath material of embodiment 1-2 is carried out performance testing test, and each performance numerical value is as table 1:

[0029] Table 1

[0030] Pilot projects

[0031] Conclusion: The present invention greatly improves the mechanical strength, insulation and flame retardancy, and has good heat and cold resistance by modifying the polyethylene material.

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PUM

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Abstract

The invention relates to the technical field of cable materials and discloses a polyethylene sheath material for a communication cable. The polyethylene sheath material is prepared from the followingraw materials: an anti-aging agent CPPD (Calcium Pyrophosphate), an antioxidant 1010, zinc stearate, a glass fiber, molybdenum disulfide, boron nitride, silicon carbide, aluminum oxide, dipentamethylenethiuram tetrasulfide, magnesium hydrate, a titanate cross-linking agent, dioctyl sebacate, polyethylene wax, an ethylene-vinyl acetate copolymer, polycarbonate, low-density polyethylene and high density polyethylene. Through modification of a polyethylene material, the mechanical strength, the insulating flame-retardant property and the thermal and cold resistance are greatly improved.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a high-strength and high-flame-retardant modified polyethylene cable material. Background technique [0002] Communication cables generally consist of a plurality of mutually insulated wires or conductors to form a cable core, and a communication line with a sealed sheath on the outside. There are various laying methods such as overhead, direct burial, pipeline and underwater. According to the structure, it is divided into symmetrical, coaxial and integrated cables; according to its function, it is divided into field and permanent cables (underground and submarine cables). The communication cable has a wide transmission frequency band, a large communication capacity, and is less affected by external interference, but it is not easy to overhaul, and can transmit telephones, telegrams, data and images, etc. [0003] Polyethylene (PE for short) is a thermoplastic resin obt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L69/00C08L23/08C08K13/04C08K5/134C08K5/098C08K7/14C08K3/30C08K3/38C08K3/34C08K3/22C08K5/40C08K5/10C08K5/11H01B3/44H01B7/295
CPCC08L23/06C08L2201/02C08L2201/08C08L2201/22C08L2203/202C08L2205/02C08L2205/025C08L2205/035C08L2207/062C08L2207/066H01B3/441H01B7/295C08L69/00C08L23/0853C08K13/04C08K5/1345C08K5/098C08K7/14C08K2003/3009C08K2003/385C08K3/34C08K2003/2227C08K5/40C08K2003/2224C08K5/10C08K5/11
Inventor 邵晓东管莉刘冬刘继婷吴学进陈鹏相京霞张永超陈暴默顾恩光
Owner 管莉
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