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Sheath material, cold-resistant power cable and production method thereof

A production method and power cable technology, applied in power cables, insulated cables, cable/conductor manufacturing, etc., can solve the problems of sheath cracking, affecting the normal laying and safe operation of cable lines, insulation breakdown, etc., and achieve extreme cold resistance Good results

Inactive Publication Date: 2017-05-10
CHINA ELECTRIC POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For climates with different degrees of severe cold, the grades of cold-resistant cables are also different. At present, cold-resistant cables with low temperature resistance of -15°C have been widely used in China, but under extreme cold conditions, ordinary cold-resistant cables still have sheaths during laying and operation. Cracking, insulation breakdown and other phenomena seriously affect the normal laying and safe operation of cable lines

Method used

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  • Sheath material, cold-resistant power cable and production method thereof
  • Sheath material, cold-resistant power cable and production method thereof
  • Sheath material, cold-resistant power cable and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of sheathing material, the consumption of each component of its raw material is figure 1 As shown in No. 1, preferably, the powdered nitrile rubber is P83 powdered nitrile rubber, and the composite stabilizer is a Ca-Zn composite stabilizer.

[0029] Its production method is:

[0030] Weigh each component of the raw material of the sheath material in proportion, send each component except powdered nitrile rubber into a high-speed mixer and stir at a speed of 450r / min for 5 minutes, then stir at a speed of 900r / min until the temperature rises To 100°C, add nitrile rubber powder and stir for 1.5 minutes, discharge the material into a cooling mixer at a speed of 100r / min, stir and cool for 5 minutes, then discharge and granulate to obtain a sheath material. The high-speed mixer described in this embodiment is selected from SHR-500A high-speed mixer, and other types of high-speed mixers can also be used. The cooling mixer described in this embodiment is selected fro...

Embodiment 2

[0032] A kind of sheathing material, the consumption of each component of its raw material is figure 1 As shown in No. 2, preferably, the powdered nitrile rubber is P83 powdered nitrile rubber, and the composite stabilizer is a Ca-Zn composite stabilizer.

[0033] Its production method is basically the same as Example 1, except that each component except powdered nitrile rubber is sent into a high-speed mixer and stirred at a speed of 550r / min for 3 minutes, then stirred at a speed of 700r / min to the temperature Raise to 120°C, add nitrile rubber powder and stir for 0.5 minutes, discharge the material into a cooling mixer and stir and cool at a speed of 100r / min for 3 minutes.

Embodiment 3

[0035] A kind of sheathing material, the consumption of each component of its raw material is figure 1 As shown in the serial number three, preferably, the powdered nitrile rubber is P83 powdered nitrile rubber, the composite stabilizer is a Ca-Zn composite stabilizer, the antioxidant is a bisphenol A antioxidant, the Anti-aging agent is anti-aging agent 4010.

[0036] Its production method is basically the same as Example 1, wherein the difference is: send each component except powdered nitrile rubber into a high-speed mixer and stir for 4 minutes with a rotating speed of 500r / min, then stir to a temperature of 800r / min with a rotating speed Raise to 110°C, add nitrile rubber powder and stir for 1 minute, discharge the material into a cooling mixer and stir and cool at a speed of 100r / min for 4 minutes.

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Abstract

The invention relates to the technical field of cables and discloses a sheath material, a cold-resistant power cable and a production method thereof. The sheath material is prepared from, by weight, 35-65 parts of polyvinyl chloride resin with the average polymerization degree of 2500, 35-65 parts of polyvinyl chloride resin with the average polymerization degree of 1300, 40-50 parts of dioctyl phthalate, 25-35 parts of powdery butyronitrile rubber, 10-20 parts of dioctyl sebacate, 10-20 parts of modified filler activated light calcium carbonate, 6-10 parts of high-temperature plasticizer, 6-10 parts of composite stabilizer, 3-7 parts of ethylene-vinyl acetate monomer copolymer and 0.5-1.5 parts of polyethylene wax lubricant. The phenomena such as sheath cracking and insulation breakdown occurred in the layout and operating process of the power cable are avoided by utilizing the cold-resistant power cable made from the sheath material.

Description

technical field [0001] The invention belongs to the technical field of cables, and in particular relates to a sheath material, a cold-resistant power cable and a production method thereof. Background technique [0002] In northern and western plateau areas of China, the winter temperature is very low, and the lowest temperature can reach below -40°C. At the same time, with the development of wind power in the arctic alpine area by the State Grid Corporation of China, the demand for cold-resistant cables will continue to increase. For climates with different degrees of severe cold, the grades of cold-resistant cables are also different. At present, cold-resistant cables with low temperature resistance of -15°C have been widely used in China, but under extreme cold conditions, ordinary cold-resistant cables still have sheaths during laying and operation. Cracking, insulation breakdown and other phenomena have seriously affected the normal laying and safe operation of cable lin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L9/02C08L23/08C08L23/06C08L75/08C08K13/06C08K9/00C08K3/26C08K5/12C08K5/11H01B3/44H01B7/17H01B7/28H01B9/00H01B13/06H01B13/14H01B13/22H01B13/24
CPCC08L27/06C08L2203/202C08L2205/025C08L2205/03C08L2205/035H01B3/443H01B7/17H01B7/28H01B9/00H01B13/06H01B13/14H01B13/22H01B13/24C08L9/02C08L23/0853C08L23/06C08K13/06C08K9/00C08K2003/265C08K5/12C08K5/11C08L75/08Y02A30/14
Inventor 邓显波樊友兵孙巍李利红杨丹刘松华吉振伟
Owner CHINA ELECTRIC POWER RES INST
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