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High-adhesive-force water-blocking yarn for electric cable and optical cable and manufacturing method of high-adhesive-force water-blocking yarn

A high-adhesion, water-blocking yarn technology, used in insulated cables, cables, optics, etc., can solve the problems of signal transmission interruption in communication cables and optical cables, water tree breakdown, etc., to reduce heat release, increase adhesion strength, and stick High knot strength effect

Pending Publication Date: 2022-05-13
NANTONG UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the laying and operation of electric cables and optical cables, when mechanical stress causes damage to the cables and optical cables, the moisture in the surrounding environment will penetrate into the cables and optical cables, causing the interruption of the signal transmission of communication cables and optical cables, and also making the cables and optical cables The water tree formed by the optical cable leads to the breakdown of the water tree, causing a major power outage

Method used

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  • High-adhesive-force water-blocking yarn for electric cable and optical cable and manufacturing method of high-adhesive-force water-blocking yarn
  • High-adhesive-force water-blocking yarn for electric cable and optical cable and manufacturing method of high-adhesive-force water-blocking yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for making a high-adhesion water-blocking yarn for electric cables and optical cables, comprising the following steps:

[0029] (1) The unrolled aramid fibers are impregnated with the adhesive, and the excess solution is removed by double rollers, and then dried in a hot channel to obtain fibers with an adhesive layer on the surface. The drying temperature of the hot channel is 120°C. The time is 2min;

[0030] Among them, the adhesive layer is composed of the following raw material components in parts by weight: 3 parts of 800 cps terminal vinyl ethyl phenyl polysiloxane, 20 parts of terminal hydrogen polysiloxane, 2 parts of heat-resistant filler, containing 0.1 part of platinum catalyst, specifically prepared by the following method: (1) under the protection of an inert gas, heat to 80° C. and stir for 3 hours, cooled to room temperature, added heat-resistant filler silicon carbide, and stirred for 3 hours to obtain component A colorless transparent liquid,...

Embodiment 2

[0035] A method for making a high-adhesion water-blocking yarn for electric cables and optical cables, comprising the following steps:

[0036] (1) The unrolled polyester fiber is impregnated with adhesive, and the excess solution is removed by double rollers, and then dried in a hot channel to obtain fibers with an adhesive layer on the surface. The drying temperature of the hot channel is 122 ° C. The time is 1min;

[0037]Among them, the adhesive layer is composed of the following raw material components in parts by weight: 4 parts of 900 cps terminal vinyl ethyl phenyl polysiloxane, 22 parts of terminal hydrogen polysiloxane, 2.5 parts of heat-resistant filler, containing 0.1 part of platinum catalyst, specifically prepared by the following method: (1) under the protection of an inert gas, heat to 85° C. and stir for 2 hours, cooled to room temperature, added heat-resistant filler silicon carbide, and stirred for 3 hours to obtain component A colorless transparent liquid,...

Embodiment 3

[0042] A method for making a high-adhesion water-blocking yarn for electric cables and optical cables, comprising the following steps:

[0043] (1) The unrolled polyester fiber is impregnated with adhesive, and the excess solution is removed by double rollers, and then dried in a hot channel to obtain fibers with an adhesive layer on the surface. The drying temperature of the hot channel is 125 ° C. The time is 2min;

[0044] Among them, the adhesive layer is composed of the following raw material components in parts by weight: 4 parts of 1000cps terminal vinyl ethyl phenyl polysiloxane, 25 parts of terminal hydrogen polysiloxane, 3 parts of heat-resistant filler, containing 0.1 part of platinum catalyst, specifically prepared by the following method: (1) under the protection of an inert gas, heat to 90° C. and stir for 3 hours, cooled to room temperature, added heat-resistant filler silicon carbide, and stirred for 4 hours to obtain component A colorless transparent liquid, ...

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Abstract

The invention relates to a high-adhesion water-blocking yarn for cables and optical cables, the high-adhesion water-blocking yarn comprises fibers, an adhesive layer and a super absorbent resin layer, the adhesive layer is composed of the following components: 3-5 parts of 800-1200 cps vinyl-terminated ethyl phenyl polysiloxane, 20-30 parts of hydrogen-terminated polysiloxane, 2-4 parts of heat-resistant filler, and 0.1 part of platinum-containing catalyst; the super-absorbent resin layer is prepared from a sodium acrylate water-absorbent resin solution and is prepared from the following raw material components in parts by weight: 40 to 80 parts of deionized water, 15 to 25 parts of sodium hydroxide, 10 to 30 parts of acrylic acid, 10 to 15 parts of acrylamide, 1 to 5 parts of ammonium persulfate and 0.5 to 4 parts of N-(hydroxymethyl) acrylamide. The adhesive disclosed by the invention is a high-temperature flexible organic silicon adhesive, is high in bonding strength and high in impact resistance after being cured and is firmly combined with the sodium acrylate water-absorbent resin, and the adhesion of the sodium acrylate water-absorbent resin can be realized by using an extremely small amount of the adhesive.

Description

technical field [0001] The invention relates to a water-blocking yarn, in particular to a high-adhesion water-blocking yarn for electric cables and optical cables and a manufacturing method thereof. Background technique [0002] During the laying and operation of electric cables and optical cables, when mechanical stress causes damage to the cables and optical cables, the moisture in the surrounding environment will penetrate into the cables and optical cables, causing the interruption of the signal transmission of communication cables and optical cables, and also making the cables and optical cables The water tree formed by the optical cable leads to the breakdown of the water tree, causing a major power outage. Nowadays, water-blocking powder (sodium polyacrylate, polyvinyl alcohol, carboxymethyl cellulose, etc.) with superabsorbent resin as the main component is often used to coat polyester, glass fiber and other fibers to make water-blocking yarn, so as to act as water v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/643D06M11/77D06M15/263D06M15/29C08F220/06C08F220/56C08F220/58H01B7/288C03C25/285C03C25/40C03C25/465C03C25/48G02B6/44D06M101/36D06M101/32
CPCD06M15/643D06M11/77D06M15/29D06M15/263C08F220/06C08F220/56H01B7/288C03C25/48C03C25/465C03C25/285C03C25/40G02B6/4479D06M2101/36D06M2101/32D06M2200/12G02B6/44384C08F220/58
Inventor 陆亚清郭其阳丁建东唐齐生陆帅丰
Owner NANTONG UNIVERSITY