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Manufacture method of halogen-free semiconductive shielding cable material

A semi-conductive and cable technology, applied in the direction of power cables with shielding layer/conductive layer, etc., can solve the problems that restrict the popularization and application of high-voltage power cables, and achieve the effects of low production cost, good tensile strength and high production efficiency

Active Publication Date: 2014-06-04
ANNAZHI THERMAL ENERGY TECH SUZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research and development of special materials for power cables in China is not optimistic. The materials for high-voltage cables are basically imported, which seriously restricts the popularization and application of high-voltage power cables.

Method used

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  • Manufacture method of halogen-free semiconductive shielding cable material
  • Manufacture method of halogen-free semiconductive shielding cable material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Raw material components: recycled low-density polyethylene (LDPE) 37kg (melt flow rate at 190°C 2.8g / 10min), ethylene-vinyl acetate copolymer (EVA) 35.5kg (melt flow rate at 190°C 3.2g / 10min) 10min, vinyl acetate content 18%), conductive carbon black 20kg (particle size 20-30nm, specific surface area 1000-1100m 2 / g);

[0027] Modifier: polyethylene wax 1kg, magnesium stearate 1kg, distearyloxy isopropoxy aluminate coupling agent 0.5kg, white mineral oil (3# white oil, molecular weight 250-450, flash point 90 ℃) 5kg. In addition, additives such as antioxidants and pigments can also be added.

[0028] (1) Carbon black was vacuum-dried at 105°C for 2 hours; carbon black and modifier were added to a high-speed mixer, and mixed with a stirrer at a speed of 200rpm for 15min at 80°C;

[0029] (2) Recover LDPE and EVA and dry them under vacuum at 80°C for 2 hours, then stir them evenly with carbon black and modifier; extrude, granulate, and inject the mixed materials;

[0...

Embodiment 2

[0033] Raw material components: 34.5kg of low-density polyethylene (LDPE) (melt flow rate at 190°C is 2.8g / 10min), ethylene-vinyl acetate copolymer (EVA) 33kg (melt flow rate at 190°C is 3.2g / 10min , mass content of vinyl acetate 18%), conductive carbon black 25kg (particle diameter 20-30nm, specific surface area 1000-1100m 2 / g);

[0034] Modifier: polyethylene wax 1kg, trimethyl aluminate 0.5kg, magnesium stearate 1kg, white mineral oil (5# white oil, molecular weight 250-450, flash point 110°C) 5kg. In addition, additives such as antioxidants and pigments can also be added.

[0035] (1) Carbon black was vacuum-dried at 105°C for 2 hours; carbon black and modifier were added to a high-speed mixer, and mixed with a stirrer at a speed of 200rpm for 15min at 80°C;

[0036] (2) reclaim LDPE and EVA and vacuum-dry at 80 DEG C for 2 hours, then stir evenly with carbon black and modifier; extrude, granulate, and inject the mixed material; the process of extrusion, granulation, an...

Embodiment 3

[0038] Raw material components: Low-density polyethylene (LDPE) 34.5kg (melt flow rate at 190°C 2.8g / 10min), ethylene-vinyl acetate copolymer (EVA) 33kg (melt flow rate at 190°C 3.2g / 10min , vinyl acetate content 18%), conductive carbon black 25kg (particle size 20-30nm, specific surface area 1000-1100m 2 / g);

[0039] Modifier: polyethylene wax 1kg, trimethyl aluminate 0.5kg, magnesium stearate 1kg, white mineral oil (5# white oil, molecular weight 250-450, flash point 110°C) 5kg. In addition, additives such as antioxidants and pigments can also be added.

[0040] (1) Carbon black was vacuum-dried at 105°C for 2 hours; carbon black and modifier were added to a high-speed mixer, and mixed with a stirrer at a speed of 200rpm for 15min at 80°C;

[0041] (2) Recover LDPE and EVA and dry in vacuum at 80°C for 2 hours, stir the dried EVA, carbon black and modifier evenly; extrude and granulate the mixed materials;

[0042] The obtained particles are mixed with recycled LDPE, ext...

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Abstract

The invention relates to the field of high polymer materials and in particular discloses a manufacture method of a halogen-free semiconductive shielding cable material which is prepared by recovering low-density polyethylene and ethylene-vinyl acetate copolymer as a matrix, adding carbon black and a modifying agent and blending. The manufacture method provided by the invention has the advantages of simplicity, lower production cost and high production efficiency; and the manufactured halogen-free semiconductive shielding cable material has the properties of better tensile strength, elongation at break, flexing property, environmental stress crack resistance and the like.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a preparation method of a halogen-free semi-conductive shielding cable material. Background technique [0002] According to the purpose, the types of cable materials mainly include five categories: power cables, control cables, instrumentation cables, communication cables and fireproof cables. Among them, the power cable has the widest access. In recent years, the structure of my country's power grid has been continuously improved and the scale has been continuously expanded. The demand for 6-35kV high-voltage cables and 66-220kV ultra-high-voltage cables continues to rise. [0003] Semi-conductive shielding materials are necessary supporting materials for high-voltage power cables. The smoothness of the semi-conductive shielding material, the adhesion between the shielding material and the insulating material, and the migration of impurities have a great relationship with the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08K9/04C08K3/04B29C47/92H01B9/02B29C48/92
Inventor 张玥许海燕张靓姜亮靓吴驰飞
Owner ANNAZHI THERMAL ENERGY TECH SUZHOU CO LTD
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