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Low resistance high expansion semi-conductive single-sided waterproof manufacture method

A single-sided water blocking and manufacturing method technology, applied in conductors, circuits, insulated cables, etc., can solve the problems of unsatisfactory water blocking effect, large volume resistance, easy accumulation of electric charges, etc., achieving reliable water blocking effect and simple production process. , the effect of reducing surface resistance and volume resistance

Inactive Publication Date: 2015-09-23
沈阳天荣电缆材料有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it plays the role of semi-conductive shielding and buffering the electric field, due to the covering layer, the expansion process is greatly delayed, and the water blocking effect is not ideal.
However, the single-sided semi-conductive resistance hose generally has a large volume resistance, and the surface is easy to accumulate charges, causing discharge phenomena and causing hidden dangers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Production of base material: adhesive cloth, unit weight: 40g / m 2 , thickness 0.16mm;

[0017] (2) Apply semi-conductive adhesive; apply it on one side of the adhesive cloth in step 1 by composite method, and the line speed is 15 m / min;

[0018] (3) Apply semiconductive resistance water powder; add 3.2Kg of sodium hydroxide and 7.2Kg of acrylic acid to the three-necked bottle successively to form acrylate through partial neutralization; add 0.4kg of dispersant nonylphenol polyoxyethylene ether sodium sulfate, Conductive slurry composed of 0.4kg sorbitan fatty acid ester S-40 and 4Kg conductive agent furnace black; add crosslinking agent polyethylene glycol diacrylate 0.005kg, N, N-methylene bisacrylamide 0.005 kg, nitrogen gas for 30min, to replace the oxygen inside the reactor; then add 0.15kg of initiator sodium persulfate and 0.05kg of sodium bisulfite to obtain hydrogel after static polymerization; dry, pulverize and sieve to obtain semi-conductive high-resista...

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PUM

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Abstract

The invention discloses a low resistance high expansion semi-conductive single-sided waterproof belt manufacture method, relating to the manufacture method of the waterproof belt. The low resistance high expansion semi-conductive single-sided waterproof belt consists of a base material layer, a semi-conductive material layer and a semi-conductive water absorption material layer. The low resistance high expansion semi-conductive single-sided waterproof belt manufacture method comprises steps of manufacturing a base material, applying a semi-conductive glue and semi-conductive resistance water powder onto the base material, drying, slitting and packaging. The product manufactured by the method is fast in the expansion speed, good in electric performance, simple in the production technology, stable in the technology performance and strong in practicability. The invention is applicable to the cable, improves watertight property of the insulation layer, the inner shielding layer and the outer shielding layer and is good in resisting water.

Description

[0001] technical field [0002] The invention relates to a method for manufacturing a cable water-blocking tape, in particular to a method for manufacturing a low-resistance, high-expansion semi-conductive single-sided water-blocking tape. Background technique [0003] During the operation of the cable, due to the strong current of the cable core, impurities, pores in the insulating layer, thorns and damaged parts of the inner and outer shielding layers will cause water trees due to the infiltration of water, causing discharge inside the insulating layer and even breakdown of the cable. This requires a semiconducting material with water-blocking properties to buffer the electric field. [0004] In order to solve the above problems, semi-conductive resistance hoses are usually used at present. Although it plays the role of semi-conductive shielding and buffering the electric field, due to the covering layer, the expansion process is greatly delayed, and the water blocking ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/17H01B7/288
Inventor 俞飞张侠杨宏艳
Owner 沈阳天荣电缆材料有限公司
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