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Cable filling material with low thermal resistance and good tensile properties

A technology of filler and cable material, which is applied in the field of cable filler, can solve problems affecting cable transmission capacity loss, weak stretch resistance, and application, and achieve low thermal resistance, reduce line loss, and prolong service life. Effect

Inactive Publication Date: 2013-01-02
JIANGSUSNGSHANG CABLE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, the selection of cable filler will seriously affect the transmission capacity of the cable and the loss of the rated current in the conductor of the same cross-section.
[0003] Therefore, we have studied a cable filler with good low thermal resistance properties, but the tensile resistance of this filler is weak, which directly affects its practical application

Method used

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  • Cable filling material with low thermal resistance and good tensile properties
  • Cable filling material with low thermal resistance and good tensile properties
  • Cable filling material with low thermal resistance and good tensile properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Put 30kg of petroleum wax, 40kg of low-density polyethylene, 5kg of barium-zinc stabilizer, 15kg of powdered nitrile rubber, and 10kg of kaolin into a high-speed mixer and heat and mix for 20 minutes at a heating temperature of 120°C; the mixed material passes through a granulator Extrusion and granulation to obtain the cable material filler.

Embodiment 2

[0019] 35kg petroleum wax, 35kg low-density polyethylene, 6kg barium-zinc stabilizer, 20kg powdered nitrile rubber, 15kg kaolin, 0.7kg lanthanum chloride, 0.2kg praseodymium oxide were put into a high-speed mixer and heated and mixed for 25 minutes, and the heating temperature was 130°C; the fineness of lanthanum chloride and praseodymium oxide is 1200 mesh; the mixed material is extruded and granulated by a granulator to obtain a cable filler.

Embodiment 3

[0021] Put 40kg of petroleum wax, 30kg of low-density polyethylene, 5kg of barium-zinc stabilizer, 12kg of powdered nitrile rubber, 12kg of kaolin, 1kg of lanthanum chloride, and 0.3kg of praseodymium oxide into a high-speed mixer and heat and mix for 30 minutes at a heating temperature of 150 ℃; the fineness of lanthanum chloride and praseodymium oxide is 1200 mesh; the mixed material is extruded and granulated by a granulator to obtain the cable material filler.

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Abstract

The invention provides a cable filling material with good low thermal resistance and good tensile properties. The main components of the cable filling material are: petroleum wax, low density polyethylene, a barium-zinc stabilizer, powdered nitrile rubber, kaolin, lanthanum chloride, and praseodymium oxide. The cable filling material provided in the invention, on the one hand, has low thermal resistance, and the advantages of transmission capacity increase, the traditional fiber fillers increase, the power cable loss reduction and service life prolonging compared with traditional fiber filling materials, and on the other hand, has good tensile properties, thus being able to be well applied in practice.

Description

technical field [0001] The invention relates to a cable filler, in particular to a cable filler with good low thermal resistance and good tensile properties. Background technique [0002] The transmission capacity of the cable is determined by the temperature rise generated when the conductor transmits current, the temperature that the outer insulation material of the conductor can withstand for a long time, and the ability of the inner and outer insulation of the cable to dissipate heat to the surrounding medium. In order to pursue the increase of transmission capacity, most of the attention in the past has been on how to increase the conductor cross section and how to overcome the large cross section conductor (such as 1000mm 2 and above) the skin effect brought about; as for the allowable working temperature of the insulating material, the thermal resistivity of the insulating and sheathing materials, and their thickness and size, they are all stipulated in the standard, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L91/06C08L9/02C08K13/02C08K3/34C08K3/22
Inventor 李斌梁福才王雪松
Owner JIANGSUSNGSHANG CABLE GROUP
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