High-expansion-rate water-blocking yarn and production process thereof

A production process, water-blocking yarn technology, applied in yarn, liquid/gas/steam fiber/sliver/roving treatment, liquid/gas/steam removal, etc. Water yarn has a lot of glue on it, etc., to achieve the effect of good water absorption

Active Publication Date: 2020-05-19
CHINA BLUESTAR CHENGRAND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problems in the prior art of water-blocking yarn with high glue content, low expansion rate and few water-blocking yarn products made of aramid fiber, and provides a production process for water-blocking yarn with high expansion rate. The production process introduces the f

Method used

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  • High-expansion-rate water-blocking yarn and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1

[0033] A production process of high expansion rate water blocking yarn, the steps are as follows:

[0034] A. Preparation of aramid water-blocking yarn: impregnating the unwinded 1500D aramid fiber with the binder solution, and passing the impregnated fiber through a double roller to remove the excess binder solution;

[0035] B. Pass the fiber obtained in step A through a hot channel treatment, the temperature of the hot channel is 120°C, and the heat treatment time is 1 min;

[0036] C after the fiber obtained in step B is impregnated with a water-soluble resin glue solution, the excess glue solution is removed through a double roller;

[0037] D. Pass the fiber obtained in step C through a hot channel treatment to cross-link the water-soluble resin glue into a super absorbent resin. The hot channel temperature is 195°C and the heat treatment time is 1.5 min;

[0038] E. Winding the fiber obtained in step D to obtain a high expansion rate aramid water blocking yarn; ...

Example Embodiment

[0040] Example 2

[0041] The difference between this embodiment and Embodiment 1 is:

[0042] The binder solution is to mix 5 parts of polyvinyl alcohol, 0.25 parts of glutaraldehyde, 95 parts of deionized water and stir evenly; the water-soluble resin glue solution is 50 parts of sodium polyacrylate post-crosslinked water-absorbing resin solution, polyethylene glycol Mix 2 parts with 48 parts of deionized water and stir evenly to obtain.

Example Embodiment

[0043] Example 3

[0044] A production process of high expansion rate water blocking yarn, the steps are as follows:

[0045] A. Preparation of aramid water-blocking yarn: impregnating the unwinded 1500D aramid fiber with the binder solution, and passing the impregnated fiber through double rollers to remove the excess binder solution;

[0046] B. Pass the fiber obtained in step A through a hot channel treatment, the temperature of the hot channel is 125°C, and the heat treatment time is 2 min;

[0047] C after the fiber obtained in step B is impregnated with a water-soluble resin glue solution, the excess glue solution is removed through a double roller;

[0048] D. Pass the fiber obtained in step C through a hot channel treatment to crosslink the water-soluble resin glue into a super absorbent resin. The hot channel temperature is 200°C, and the heat treatment time is 0.5 min;

[0049] E. Winding the fiber obtained in step D to obtain a high expansion rate aramid water blocking yarn;

...

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PUM

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Abstract

The present invention discloses a high-expansion-rate water-blocking yarn and a production process thereof. The water-blocking yarn comprises fiber, an adhesive layer formed on the surface of the fiber and a super absorbent resin layer on the surface of the adhesive layer, wherein the super absorbent resin layer is formed by drying a mixed solution of a post-crosslinked water absorption resin solution, polyethylene glycol and deionized water on the adhesive layer. The production process comprises the following steps of A, impregnating the fiber in an adhesive solution; B, drying the fiber through a hot channel, so as to enable the adhesive solution to form the adhesive layer on the fiber surface; C, impregnating the dried fiber in a water-soluble resin glue solution; D, drying the fiber through the hot channel, so as to enable the water-soluble resin to be crosslinked into super absorbent resin and further to form the super absorbent resin layer on the adhesive layer; and E, winding the dried fiber to obtain the high-expansion-rate water-blocking yarn. According to the water-blocking yarn prepared with the process, the water absorption resin is firmly combined with the fiber, the texture is soft, the water absorption rate is high, and water and moisture can be effectively prevented from invading a power cable and an optical cable, so that safe operation of the power cable and the optical cable is ensured.

Description

technical field [0001] The invention relates to the field of water-blocking materials for cables and optical cables, in particular to a high-expansion water-blocking yarn and a production process thereof. Background technique [0002] During the laying and running of electric and optical cables, when the cable is damaged, moisture and moisture will enter the interior of the cable from the damaged point and spread along the longitudinal gap of the cable, resulting in hydrogen loss, fiber breakage and a sharp drop in electrical insulation performance. The drop causes the interruption of communication cable and optical cable signal transmission. At present, the filling and water-blocking materials for optical cables mainly include ointment, water-blocking tape, water-blocking yarn, and hot-melt adhesive to achieve the purpose of moisture-proof and water-blocking. In the production process of optical cables, the water-blocking yarn is wrapped around the cable core. When the opt...

Claims

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Application Information

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IPC IPC(8): D06M15/333D06M13/123D06M15/53D06M15/263D02G3/04D02G3/18D02G3/40D02G3/44D06B3/02D06B15/00D06M101/32D06M101/36
CPCD06M15/333D06M13/123D06M15/53D06M15/263D02G3/404D02G3/44D02G3/185D02G3/04D06B3/02D06B15/00D10B2331/021D10B2331/04D10B2401/021D06M2101/36D06M2101/32
Inventor 李兰英林志娇周万立何鑫业
Owner CHINA BLUESTAR CHENGRAND CO LTD
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