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Copper wire hemming type semiconductive buffer water-blocking tape for ultrahigh-voltage cable

A semi-conductive, ultra-high-voltage technology, applied in the direction of insulating cables, cables, conductors, etc., can solve the problems of water-absorbing powders with reduced water absorption performance, large resistance value, and poor water resistance.

Pending Publication Date: 2021-11-19
YANG ZHOU TENGFEI ELECTRIC CABLE & APPLIANCE MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (2) Poor semiconductivity:
[0008] Due to the coating of conductive "C" on the surface of the fiber, there is colloid and insulating grade polyester fiber between the conductive "C" and "C", resulting in a large resistance value
[0009] (3) Poor water resistance:
Decrease the water absorption performance of the water-absorbent powder

Method used

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  • Copper wire hemming type semiconductive buffer water-blocking tape for ultrahigh-voltage cable
  • Copper wire hemming type semiconductive buffer water-blocking tape for ultrahigh-voltage cable
  • Copper wire hemming type semiconductive buffer water-blocking tape for ultrahigh-voltage cable

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Embodiment Construction

[0040] A semi-conductive buffer water-blocking belt with copper wire seams for ultra-high voltage cables, characterized in that it includes a semi-conductive fluffy buffer cotton 1, and a tinned copper wire 2 is arranged in the semi-conductive fluffy buffer cotton 1;

[0041] The upper and lower sides of the semi-conductive fluffy cushioning cotton 1 are respectively provided with water-blocking conductive glue 3 .

[0042] Further, the water-blocking conductive adhesive 3 is prepared from the following materials in parts by mass:

[0043] Ethylene glycol: butyl acrylate: methyl acrylate: conductive carbon black: absorbent resin: dispersant = (3-4): (0.3-0.5): (0.3-0.5): (0.4-0.5): (0.5- 0.8): (0.05-0.1).

[0044] Further, the preparation method of the water-blocking conductive adhesive (3) is as follows:

[0045] 1) Add butyl acrylate: methyl acrylate to ethylene glycol, and stir for 30 minutes at a speed of 500 rpm;

[0046] 2) Add dispersant and water-absorbent resin to ...

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Abstract

The invention relates to a copper wire hemming type semiconductive buffer water-blocking tape for an ultrahigh-voltage cable. The copper wire hemming type semiconductive buffer water-blocking tape comprises semi-conductive fluffy body buffer cotton (1), wherein a tinned copper wire (2) is arranged in the semi-conductive fluffy body buffer cotton (1), and the upper surface and the lower surface of the semi-conductive fluffy buffer cotton (1) are respectively provided with water-blocking conductive adhesive (3). According to the invention, the buffer water-blocking tape disclosed by the invention is used for wrapping the inner part of an ultrahigh-voltage cable (the outer part of an insulation shielding layer and the inner layer of a corrugated aluminum sheath) with the voltage class of 110KV, 220KV and above, plays a role in insulating good electrical contact between a semi-conductive shielding layer and a metal shielding layer, and has buffer and longitudinal water-blocking effects.

Description

technical field [0001] The invention relates to a semi-conductive buffer water-blocking tape with copper wire seams for ultra-high voltage cables, in particular, the buffer water-blocking tape of the present invention is used for the inner wrapping of ultra-high voltage cables with voltage levels of 110KV, 220KV and above (outside of the insulating shielding layer) , corrugated aluminum sheath inner layer), to insulate between the semi-conductive shielding layer and the metal shielding layer, to maintain good electrical contact, and to buffer and longitudinally prevent water. Background technique [0002] Copper wire seamed semi-conductive buffer water-blocking tape for ultra-high voltage cables is made of tin-coated copper wire, conductive fiber, super absorbent resin, and acrylic acid emulsion, and is prepared by carbon nanotube composite modified material. , Nano-material dispersion technology in polymer matrix, surface copper wire sewing technology and advanced vacuum sp...

Claims

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Application Information

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IPC IPC(8): H01B7/288H01B7/282
CPCH01B7/288H01B7/282Y02A30/14
Inventor 张云付前刚周敏玉张雨雷史小红王彪强新发郝桐帆江涛张灿灿张云芳吴芳
Owner YANG ZHOU TENGFEI ELECTRIC CABLE & APPLIANCE MATERIALS CO LTD
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