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Underground engineering power cable with sheath

A power cable and underground engineering technology, which is applied in the field of underground engineering power cables, can solve the problems of being easily corroded by acid, alkali and salt, easy to deform and break, poor high temperature resistance and severe cold resistance, etc., achieve low cost, improve corrosion resistance and wear resistance , Good salt resistance, heat resistance and cold resistance

Inactive Publication Date: 2018-01-09
国网山东省电力公司费县供电公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of the existing underground engineering power cables with sheaths such as easy deformation and fracture, easy to be corroded by acid, alkali and salt, and poor high temperature and severe cold resistance; the invention discloses an underground engineering power cable with a sheath

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The underground engineering power cable with a sheath is composed of a conductor, an insulating layer and a sheath from the inside to the outside; the sheath is prepared according to the following process:

[0018] Step 1) Weigh the raw materials: take each raw material in parts by weight for use, including 50 parts polypropylene resin, 40 parts chloroether resin, 5 parts chlorinated paraffin, 2 parts borax, 2 parts sepiolite, 1 part glass fiber, 1 part of sucrose benzoate, 0.6 part of palygorskite, 0.5 part of talc, 0.5 part of sodium lauryl sulfonate;

[0019] Step 2) Crushing and ball milling: Put sepiolite and palygorskite into a pulverizer for pulverization, then mix with borax, and then put into a ball mill for ball milling to a powder with a particle size of 100 mesh;

[0020] Step 3) Mixing: Mix polypropylene resin and chloroether resin for 5 minutes at 50°C, then heat to 70°C, add chlorinated paraffin, sucrose benzoate and glass fiber, mix for 5 minutes, and then heat...

Embodiment 2

[0024] The underground engineering power cable with a sheath is composed of a conductor, an insulating layer and a sheath from the inside to the outside; the sheath is prepared according to the following process:

[0025] Step 1) Weigh the raw materials: take the raw materials in parts by weight for use, including 90 parts of polypropylene resin, 70 parts of chloroether resin, 8 parts of chlorinated paraffin, 3 parts of borax, 3 parts of sepiolite, and 2 parts of glass fiber. 2 parts of sucrose benzoate, 0.9 parts of palygorskite, 0.7 parts of talc, 0.7 parts of sodium lauryl sulfonate;

[0026] Step 2) Crushing and ball milling: Put sepiolite and palygorskite into a pulverizer for pulverization, then mix with borax, and then put into a ball mill for ball milling to a powder with a particle size of 200 mesh;

[0027] Step 3) Mixing: Mix polypropylene resin and chloroether resin for 5 minutes at 50°C, then heat to 70°C, add chlorinated paraffin, sucrose benzoate and glass fiber, mix f...

Embodiment 3

[0031] The measurement of various performance parameters of the protective sleeve of the present invention: Take the outer diameter of 100mm, the wall thickness of 5mm, and the length of 10m as examples. Tensile strength, bending strength, bus hardness, respectively refer to GB / T1458, GB / T1449, GB / T3854. The specific results are shown in Table 1.

[0032] Table 1

[0033] Group

Tensile strength Mpa

Bending strength Mpa

Bus hardness

Example 1

176

208

46.5

Example 2

173

213

45.7

[0034] Salt resistance test: When the sheathing tube of Example 1 was immersed in a 10% sodium chloride solution for 30 days, the tensile strength decreased by only 0.5%, the bending strength decreased by 1.2%, and the bus hardness decreased by 0.8%.

[0035] Alkali resistance test: When the sheathing tube of Example 1 was immersed in a 10% sodium hydroxide solution for 30 days, the tensile strength decreased by only 1.2%, the bending strength decreased by 0.9%, and the bus hardness decreased by 0.7%. ...

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Abstract

The invention belongs to the field of electric materials, and discloses an underground engineering power cable with a sheath. The underground engineering power cable with the sheath is composed of a conductor, an insulation layer and the sheath from inside to outside sequentially, and the sheath is prepared according to the following process of: step (1) weighing raw materials, step (2) conductingcrushing and ball-milling, step (3) conducting mixing, step (4) conducting granulation, and step (5) conducing molding. The prepared underground engineering power cable with the sheath is resistant to acid, alkali and salt corrosion, high temperature and low temperature.

Description

Technical field [0001] The invention belongs to the field of electric power materials, and specifically relates to an underground engineering power cable with a sheath. Background technique [0002] Compared with common overhead lines, underground engineering power cables are also called underground engineering power cables because they are often buried underground. A cable is made of one or more mutually insulated conductors with an insulating layer and a protective layer, which are used to transfer electricity or information from one place to another. Underground engineering power cables are different from overhead high-voltage lines. The cables are often laid in cable trenches, tunnels, pipelines or indoors. [0003] Sheath is a kind of insulation protection heat-shrinkable sleeve commonly used on cables. The main material of this type of product is PE. After two processes of radiation crosslinking and heating expansion, it has the function of heat shrinkage, and the shrinkage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L27/06C08L91/06C08K13/04C08K7/14C08K3/38C08K3/34C08K5/42H01B3/44H01B7/17H01B9/00H01B13/22B29B9/06B29C47/92B29C48/92
Inventor 王洪旭陈彤彤夏继青王袁彭东丽吴云良葛夫强
Owner 国网山东省电力公司费县供电公司
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