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Production method of semi-conductive buffer water-blocking band

A production method and technology of water blocking tape, applied in the direction of insulation of conductors/cables, conductors, circuits, etc., can solve the problems of unsatisfactory electrical conductivity, unadvanced manufacturing process, affecting electrical conductivity, etc., and meet the normal working temperature. , Good water blocking effect and low volume resistivity

Active Publication Date: 2009-10-28
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

[0002] Semi-conductive buffer water-blocking tape is commonly used in the high-voltage cross-linked power cable industry. It can produce semi-conductive shielding and buffer the electric field. At the same time, it requires good water absorption capacity to protect the cable core from moisture. , but the current semi-conductive buffer water-blocking tape has unsatisfactory electrical conductivity due to its unadvanced manufacturing process, and the interior of the base fabric material cannot fully absorb the electrolyte, which increases the volume resistance and affects its electrical conductivity.

Method used

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  • Production method of semi-conductive buffer water-blocking band

Examples

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Comparison scheme
Effect test

Embodiment 1

[0021] The present invention produces by following process route:

[0022] (1) with conductive liquid: the mass percent of each component in the conductive liquid is: the content of carbon is at 20%, acrylic acid is at 12%, mediocre is at 3%, dispersant is at 1.5%, and the rest is water. After the two components are mixed evenly, they are placed in a mixer and stirred at a stirring speed of 1200 rpm.

[0023] (2) Pressurized coating solution: impregnate the polyester cloth with conductive liquid in the pressurized rubber tank, and at the same time, the pressure in the pressurized rubber tank is greater than 4 times the atmospheric pressure, so that the conductive liquid is impregnated into the polyester cloth, and the polyester cloth is pressurized The running speed in the glue tank is 10-15 m / min.

[0024] (3) Dust spraying: Let the impregnated polyester cloth be evenly sprayed with a certain amount of super absorbent resin on its surface, and the powder spraying amount shou...

Embodiment 2

[0030] The present invention produces by following process route:

[0031] (1) with conductive liquid: the mass percent of each component in the conductive liquid is: the content of carbon is 30%, acrylic acid is at 10%, flat and good is at 2%, dispersant is at 1%, and the rest is water. After the components are mixed evenly, they are placed in a mixer and stirred at a stirring speed of 1000 rpm.

[0032] (2) Pressurized coating solution: impregnate the polyester cloth with conductive liquid in the pressurized rubber tank, and at the same time, the pressure in the pressurized rubber tank is greater than 4 times the atmospheric pressure, so that the conductive liquid is impregnated into the polyester cloth, and the polyester cloth is pressurized The running speed in the glue tank is 10-15 m / min.

[0033] (3) Dust spraying: Let the impregnated polyester cloth be evenly sprayed with a certain amount of super absorbent resin on its surface, and the powder spraying amount should b...

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Abstract

The invention relates to a production method of a water-blocking band, in particular to a production method of a semi-conductive buffer water-blocking band. The production method comprises the following steps: firstly, supercharging and soaking a high-temperature resistant polyester sponge and terylene cloth in conductive liquid, spraying high water-absorbent resin on the terylene cloth and compounding the high-temperature resistant polyester sponge and the terylene cloth; then, spraying the conductive liquid with a high-pressure spray gun and drying the high-temperature resistant polyester sponge and the terylene cloth which are compounded in vacuum at a high temperature; and finally, coiling, cutting and packaging the high-temperature resistant polyester sponge and the terylene cloth which are compounded in vacuum to be a finished semi-conductive buffer water-blocking band . Proved by detection, the semi-conductive buffer water-blocking band has the advantages of high intensity, thinness, rapid swelling in water, high water absorption, good water-blocking effect, high-temperature environment influence resistance, small surface resistance, low volume electric resistivity, European Union environmental protection accordance, and the like, can satisfy the water blocking and the electric field shielding among parts of power cables, and the like, maintains the safe use of the cables, can generate the semi-conductive shielding action so as to buffer an electric field, can be lined at the inner side of a metal protective sleeve to buffer the friction between the inner protective sleeve and the metal protective sleeve and can satisfy the normal working temperature of the cables.

Description

technical field [0001] The invention relates to a production method of a water-blocking tape, in particular to a production method of a semi-conductive buffer water-blocking tape suitable for power cables. Background technique [0002] Semi-conductive buffer water-blocking tape is commonly used in the high-voltage cross-linked power cable industry. It can produce semi-conductive shielding and buffer the electric field. At the same time, it requires good water absorption capacity to protect the cable core from moisture. , but the current semi-conductive buffer water-blocking tape has unsatisfactory electrical conductivity due to its unadvanced manufacturing process, and the current base material cannot fully soak and absorb the electrolyte, which increases the volume resistance and affects its electrical conductivity. Contents of the invention [0003] The purpose of the present invention is to provide a production method of the semi-conductive buffer water-blocking tape wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/32H01B7/282D06N3/18D06N7/06D06M17/00D06M15/00D06M11/00
CPCY02A30/14
Inventor 张云
Owner YANG ZHOU TENGFEI ELECTRIC CABLE & APPLIANCE MATERIALS CO LTD
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