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High-temperature-resistant and dampproof cable for industry

An industrial, high-temperature-resistant technology, used in the field of cables, which can solve the problems of large outer diameter, poor bending performance, and poor flexibility.

Inactive Publication Date: 2016-03-02
STATE GRID SHANDONG ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing fire-resistant and high-temperature-resistant cables are made of magnesium oxide cables. Although this cable has high fire resistance, its softness is particularly poor. The insulation inside is filled with magnesium oxide, and copper tubes are used as the sheath outside. Its characteristics are: Heavy weight, poor bending performance, and cannot be manufactured in large lengths, which causes great inconvenience to production and use
Even if the current ordinary flexible fireproof cable is used, it also has a great disadvantage. The fireproof layer is wrapped with mica tape. If the outer copper sheath is damaged, moisture will invade. Once the mica absorbs moisture, it will fail and will Loss of insulation performance, does not have the function of fire resistance
Another mica is a very brittle substance that is easily broken, and it will fail after being broken, that is, it does not have the function of fire prevention, and its weight is also large, its outer diameter is also large, and its flexibility is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A high-temperature and moisture-proof industrial cable, which is prepared by wrapping an aluminum alloy wire with an insulating outer layer,

[0022] The insulating outer layer is prepared from the following raw materials in parts by weight:

[0023] 1 part of graphite, 1 part of silicon carbide, 1 part of alumina, 2 parts of triphenyl phosphate, 2 parts of oleic acid amide, 2 parts of zinc borate, 3 parts of glass fiber, 3 parts of borax, 3 parts of palygorskite, stearic acid 3 parts, 4 parts of aluminum nitride, 5 parts of egg shell, 6 parts of triallyl cyanurate, 10 parts of polypropylene resin, 20 parts of EPDM rubber, 30 parts of polyvinyl chloride, 40 parts of hydrogenated nitrile rubber share.

[0024] Among them, the particle size of graphite, silicon carbide, alumina, zinc borate and aluminum nitride is controlled at 100 mesh; the diameter of glass fiber is 10um, and the length is 30um.

[0025] The preparation method of the above-mentioned insulating outer l...

Embodiment 2

[0031] A high-temperature-resistant and moisture-proof industrial cable is prepared by wrapping a copper-aluminum alloy wire with an insulating outer layer, and the insulating outer layer is prepared from the following raw materials in parts by weight:

[0032] 2 parts of graphite, 2 parts of silicon carbide, 2 parts of alumina, 3 parts of triphenyl phosphate, 3 parts of oleic acid amide, 3 parts of zinc borate, 4 parts of glass fiber, 4 parts of borax, 4 parts of palygorskite, stearic acid 4 parts, aluminum nitride 5 parts, egg shell 7 parts, triallyl cyanurate 8 parts, polypropylene resin 12 parts, EPDM rubber 25 parts, polyvinyl chloride 40 parts, hydrogenated nitrile rubber 50 parts share.

[0033] Among them, the particle size of graphite, silicon carbide, alumina, zinc borate and aluminum nitride is controlled at 100 mesh; the diameter of glass fiber is 20um, and the length is 50um.

[0034] The preparation method of the above-mentioned insulating outer layer comprises ...

Embodiment 3

[0040] The performance test of the cable prepared by the present invention:

[0041] 1. The insulating outer layer prepared in Example 1 and Example 2 has better high-temperature, waterproof, and moisture-proof properties, mechanical properties and flame-retardant properties. The specific test results can be seen in Table 1, wherein the thickness of the insulating outer layer is 2mm:

[0042] Table 1

[0043] group Tensile strength (N / mm 2 ) Elongation at break (%) Thermal stability time at 200°C (min) Volume resistivity×10 -15 (Ω·cm) Oxygen Index Example 1 18.3 483 >200 2.31 34.1 Example 2 18.6 491 >200 2.37 34.3

[0044] 2. Moisture-proof and moisture-proof performance test: put the test material under the condition of 100% humidity and 60°C for 200 days, and measure the main performance parameters, see Table 2:

[0045] Table 2

[0046] group Volume resistivity retention (%) Tensile strength retention (%) Elongat...

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Abstract

The invention belongs to the technical field of cables and discloses a high-temperature-resistant and dampproof cable for industry. The cable is formed by wrapping a wire in an insulating outer layer. The cable is characterized in that the insulating outer layer is prepared from graphite, silicon carbide, aluminum oxide, triphenyl phosphate, oleamide, zinc borate, glass fibers, sodium borate, palygorskite, stearic acid, aluminum nitride, egg shells, triallyl cyanurate, polypropylene resin, EPDM rubber, polyvinyl chloride and hydrogenated butadiene-acrylonitrile rubber. The cable has good high-temperature-resistant and dampproof performance and mechanical performance.

Description

technical field [0001] The invention belongs to the technical field of cables, in particular to a high-temperature-resistant and moisture-proof industrial cable. Background technique [0002] The high temperature and moisture resistance of the cable is particularly important, which is the guarantee for the normal transportation of electricity. Most of the existing fire-resistant and high-temperature-resistant cables are made of magnesium oxide cables. Although this cable has high fire resistance, its softness is particularly poor. The insulation inside is filled with magnesium oxide, and copper tubes are used as the sheath outside. Its characteristics are: The weight is heavy, the bending performance is poor, and it cannot be manufactured in a large length, which causes great inconvenience to production and use. Even if the current ordinary flexible fireproof cable is used, it also has a great disadvantage. The fireproof layer is wrapped with mica tape. If the outer copper ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00C08L27/06C08L23/16C08L23/12C08K13/04C08K7/14C08K3/04C08K3/34C08K3/22C08K5/523C08K5/20C08K3/38C08K5/09C08K3/28C08K5/3492
Inventor 李文康孙永波王香朱清杰刘涛王兴帅
Owner STATE GRID SHANDONG ELECTRIC POWER
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