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Water-blocking expansion type semi-conductive nylon tape for ultrahigh-voltage cable and preparation method thereof

An expansion type, ultra-high voltage technology, applied in the direction of insulating cables, cables, conductors, etc., can solve the problems of high surface resistance of nylon base cloth, slow evaporation speed of conductive liquid, surface oxidation of cable conductors, etc., to improve the water blocking effect and reduce Surface resistance, good uniformity of electrical properties

Pending Publication Date: 2021-09-03
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

[0004] 1. Nylon base cloth has high surface resistance, high volume resistance and poor semiconductive performance;
[0005] 2. It is prepared by multiple processes. First, water is used as the diluent to prepare the conductive liquid, and the conductive liquid is coated on the base cloth and dried, and then coated with water-absorbing materials. The manufacturing process is complicated and the cost is high;
[0006] 3. The conductive liquid with water as the diluent volatilizes slowly, resulting in low production efficiency, and it is easy to oxidize the surface of the cable conductor

Method used

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  • Water-blocking expansion type semi-conductive nylon tape for ultrahigh-voltage cable and preparation method thereof
  • Water-blocking expansion type semi-conductive nylon tape for ultrahigh-voltage cable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] EHV cable water blocking semiconductive expanded nylon belt, prepared using the following steps:

[0040] S1 woven fabric:

[0041] Selection 70dtex nylon and aluminum wire 66 with a uniform diameter of 0.1mm as weft, wherein the nylon yarn density of 66 30 / cm, density of the wire 2 / cm;

[0042] Selection 120dtex polyester net weight elastic yarn and 0.1mm diameter aluminum wire with a uniform warp yarn, wherein the polyester mesh zhongwang weight elastic yarn density of 40 / cm, density of the wire 4 / cm;

[0043] Using an air jet loom weaving warp and weft fabric obtained;

[0044] Preparation of water-blocking conductive liquid S2

[0045] 40 parts of the polyester of ethylene glycol was added with stirring stage bucket, AF was added 2 parts of a dispersant to 300 rev / min stirring speed uniformity;

[0046] After completion of the stirring, 10 parts of conductive carbon black was added to the mixing bucket, at 1200 rev / min stirring speed 2H;

[0047] After compl...

Embodiment 2

[0053] An ultra-high-voltage cable with a water-water expansion type semiconductive nylon belt, which is prepared by using the following steps:

[0054] S1 weaving base fabric:

[0055] The aluminum wire with 120 dtex net polyester ejection and diameter 0.2 mm is uniformly matched as the weft, wherein the net polyester emitting mount is 40 / cm, and the wire density is 1 / cm;

[0056] It is uniformly fitted with a 100dtex nylon wire and a diameter of 0.2 mm aluminum wire as a warp, wherein the nylon filament density is 44 / cm, and the wire density is 3 / cm;

[0057] Base fabric is obtained by loom weaving;

[0058] Preparation of S2 water-water conductive solution

[0059] 50 parts of polyester printed propylene glycol were added to the stirred barn, 1 part AF dispersant was added, and stirred evenly at 400 rpm;

[0060] After the stirring was completed, 15 parts of conductive carbon black were added to the stirred barrel, and stirred at 1300 rpm for 2 h;

[0061] After the sti...

Embodiment 3

[0067] An ultra-high-voltage cable with a water-water expansion type semiconductive nylon belt, which is prepared by using the following steps:

[0068] S1 weaving base fabric:

[0069] The aluminum wire with 150dTex net polyester ejection and diameter 0.3 mm is uniformly matched as the weft, wherein the net polyester emitting mount is 40 / cm, and the wire density is 1 / cm;

[0070] The aluminum wire with 60dTex nylon wire and a diameter of 0.3 mm is selected as a warp, wherein the nylon filament density is 44 / cm, and the wire density is 3 / cm;

[0071] Base fabric is obtained by loom weaving;

[0072] Preparation of S2 water-water conductive solution

[0073] 45 parts of polyester-grade propylene glycol were added to the stirred barn, 1 part AF dispersant was added, and the mixture was mixed at 400 rpm;

[0074] After the stirring was completed, 14 parts of conductive carbon black were added to the stirred barrel, and stirred at 1300 rpm for 2 h;

[0075] After the stirring ...

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Abstract

The invention discloses a water-blocking expansion type semi-conductive nylon tape for an ultrahigh-voltage cable and a preparation method thereof. The preparation method comprises the following steps that S1, mixed weaving is carried out on metal wires and cellosilk to obtain base cloth; S2, an alcohol diluent, a dispersant, water-absorbent resin, conductive carbon black and an emulsion are uniformly mixed to prepare a water-blocking conductive liquid; and S3, the base cloth obtained in the step S1 is uniformly coated with the water-blocking conductive liquid obtained in the step S2, and then drying is carried out to obtain the water-blocking expansion type semi-conductive nylon tape. The base cloth is formed by blending the metal wires and the cellosilk, the metal wires effectively reduce the surface resistance and the volume resistance of the base cloth, and the semi-conductive performance is improved; and the water-blocking and conductive liquid is prepared by synchronously and uniformly mixing a water-absorbing material and a conductive material with the alcohol diluent, the alcohol diluent and the water-absorbing resin do not absorb, expand and react, so that the serious defects caused when water is used as the diluent in the traditional process are overcome, the prepared water-blocking and conductive liquid can endow the base cloth with semi-conductive performance and water-blocking performance at one time, working procedures are effectively reduced, production power consumption is reduced, and energy conservation and environmental protection are achieved.

Description

Technical field [0001] The present invention relates to the technical field of cable manufacture, particularly relates to EHV cable water blocking semiconductive expanded nylon belt and preparation method. Background technique [0002] In recent years, our national network transformation, expansion by leaps and bounds, especially in EHV cable manufacturers have approved the project has been built or put into operation up to more than two hundred worldwide tower EHV cable production line, China accounted for 80%. China currently under construction or have been built into the tower production of more than 30, the annual domestic demand of nearly 300 billion extra high voltage cables, and increasing year by year, for the production of raw materials EHV cable is almost entirely dependent on imports. Wherein the water blocking semiconductive nylon tape material layer is produced EHV cables most indispensable material, large domestic demand, there are several now capable of producing d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/04D06N3/00H01B7/288
CPCD06N3/042D06N3/0034D06N3/0036D06N3/0006D06N3/0061D06N3/0063H01B7/288D06N2209/041D06N2209/142D06N2211/04Y02A30/14
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吴芳
Owner YANG ZHOU TENGFEI ELECTRIC CABLE & APPLIANCE MATERIALS CO LTD
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