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Preparation method of polyacrylamide cable yarn

A polyacrylamide type and polyacrylamide technology is applied in the field of preparation of polyacrylamide type water-blocking yarn, which can solve the long-term stability hazards of power cable transmission performance, inability to adapt to high-temperature production environments, and unsatisfactory longitudinal water-blocking effects. problem, to achieve the effect of good water blocking effect, good vertical direction and strong practicability

Inactive Publication Date: 2013-03-06
KUNSHAN FENFA INSULATING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional water-blocking yarn has poor temperature resistance and cannot adapt to the high-temperature production environment in the cable production process. It has low tensile strength and is easy to break, causing production accidents. The longitudinal water-blocking effect is not ideal, which affects the long-term stability of power cable transmission performance. sex can be dangerous

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Weigh 22kg of acrylamide and add it to water to dissolve, then add 10kg of potassium persulfate, 0.6kg of N,N'-methylenebisacrylamide and 10kg of sodium carbonate into the water, then add a certain amount of water, under nitrogen protection React at a constant temperature of 60°C for 2 hours, and obtain a polyacrylamide solid after the reaction is complete;

[0016] (2) Wash the polyacrylamide with water, pulverize it with a pulverizer, and dry it to obtain small solid polyacrylamide particles;

[0017] (3) Dip polyester filaments in water suspended with small polyacrylamide solid particles, take them out after 3 hours and dry them to obtain polyacrylamide water-blocking yarns.

Embodiment 2

[0019] (1) Weigh 120kg of acrylamide and dissolve it in water, then add 40kg of potassium persulfate, 2kg of N,N'-methylenebisacrylamide and 60kg of sodium carbonate into the water, then add a certain amount of water, nitrogen and argon mixed gas Under protection, react at a constant temperature of 60°C for 3 hours, and obtain a polyacrylamide solid after the reaction is completed;

[0020] (2) Wash the polyacrylamide with water, pulverize it with a pulverizer, and dry it to obtain small solid polyacrylamide particles;

[0021] (3) Dip polyester filaments in water suspended with small polyacrylamide solid particles, take them out after 3 hours and dry them to obtain polyacrylamide water-blocking yarns.

Embodiment 3

[0023] (1) Weigh 52kg of acrylamide and add it to water to dissolve, then add 12kg of potassium persulfate, 0.4kg of N,N'-methylenebisacrylamide and 28kg of sodium carbonate into the water, then add a certain amount of water, and protect it with argon React at a constant temperature of 60°C for 4 hours, and obtain a polyacrylamide solid after the reaction is complete;

[0024] (2) Wash the polyacrylamide with water, pulverize it with a pulverizer, and dry it to obtain small solid polyacrylamide particles;

[0025] (3) Dip polyester filaments in water suspended with small polyacrylamide solid particles, take them out after 2 hours and dry them to obtain polyacrylamide water-blocking yarns.

[0026] The preparation method of the polyacrylamide type water-blocking yarn disclosed by the present invention has a good longitudinal water-blocking effect of the obtained polyacrylamide type water-blocking yarn, expands rapidly when encountering water, has a high water absorption rate, g...

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Abstract

The invention discloses a preparation method of polyacrylamide cable yarn, comprising the following steps of: adding weighted acrylamide, potassium persulfate, N,N'-methylenebisacrylamide and sodium carbonate into water and reacting in water at the temperature of 60 DEG C to obtain polyacrylamide solid; washing polyacrylamide by water, crushing and drying to obtain granules of polyacrylamide solid; and soaking polyester filament yarn into water, taking the polyester filament yarn out and stoving to obtain the polyacrylamide cable yarn, wherein the granules of polyacrylamide solid are suspended in water. In such a way, the preparation method of the polyacrylamide cable yarn, provided by the invention, has the advantages that the obtained polyacrylamide cable yarn is good in longitudinal water resisting effect, capable of rapidly expanding in the presence of water, high in water absorption rate, favorable in tensile strength and thermal stability and not easily generating powder-off or bonding situation when being used due to the firm combination of water-absorbent resin with high rate and the polyester filament yarn; and the method is simple in production technique, stable in technical performance, strong in practical applicability and capable of being widely applied.

Description

technical field [0001] The invention relates to the field of power cables, in particular to a preparation method of polyacrylamide water-blocking yarn. Background technique [0002] In the past ten years, with the rapid development of communication technology, the application field of power cables is also expanding. At the same time, the environmental requirements for power cables are constantly increasing, so the quality requirements for power cables are also increasing. Water-blocking yarn is a water-blocking material commonly used in the power cable industry. Its sealing, buffer protection, moisture-proof and waterproof functions have been widely recognized by people, and its performance and varieties have been continuously improved and improved with the development of power cables. Complete. [0003] The traditional water-blocking yarn is made of a blend of water-absorbing fiber and polyester fiber, and is finished by combing. However, the traditional water-blocking ya...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/285C08F120/54C08K3/26C08L33/24
Inventor 周巧芬
Owner KUNSHAN FENFA INSULATING MATERIALS
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