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Water tree-resistant polyethylene insulated cable material and preparation method thereof

A polyethylene insulation and cable material technology, applied in plastic/resin/wax insulators, organic insulators, etc., can solve problems affecting the reliability of polyethylene cables, hidden dangers of power grid safety operation, etc., to improve resistance to water tree aging and physical machinery. performance, improved safety, and extended service life

Inactive Publication Date: 2013-12-25
JING FENG GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Polyethylene cables have become the mainstream of power cables due to their excellent electrical properties, large transmission capacity, good heat resistance, easy bending, simple accessory joints, and convenient installation and laying. The effect of chemical and other factors will cause aging, especially the phenomenon of water tree aging, which greatly affects the long-term reliability of polyethylene cables and makes the cables enter the aging period ahead of time, thus laying a major hidden danger for the safe operation of the power grid.

Method used

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  • Water tree-resistant polyethylene insulated cable material and preparation method thereof

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Embodiment Construction

[0010] A water-tree-resistant polyethylene insulated cable material, which is made of the following raw materials (kg): low-density polyethylene 80, maleic anhydride grafted EVA12 maleic anhydride grafted POE8, sorbitol 1, polyethylene glycol Alcohol 2, dicumyl peroxide 2, antioxidant DLTP0.5, triallyl cyanurate 3, tribasic lead sulfate 1.5, polydimethylsiloxane 3, magnesium oxide 2, stearin Acid 3, organic bentonite 10, calcium sulfate whisker 10, semi-reinforcing carbon black N77018, composite filler 6, diisobutyl phthalate 8, N-cyclohexylthiophthalimide 1.5, Antiaging agent DDM2, accelerator TMTD1, accelerator DPTT2;

[0011] The preparation method of the composite filler is as follows: a. Take the following raw materials by weight (kg): fluorite 10, dolomite 10, acrylic acid 12, jade powder 10, ammonium persulfate 0.15, urotropine 0.8, volcanic ash 4, hydrogen Aluminum oxide 6, barium sulfate whisker 4, calcium stearate 2, mullite 8, polytetrafluoroethylene micropowder 6,...

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Abstract

The invention discloses a water tree-resistant polyethylene insulated cable material and a preparation method thereof. The cable material is prepared by the following raw materials in parts by weight: 70-80 parts of low-density polyethylene, 10-15 parts of maleic anhydride grafted EVA (ethylene vinyl acetute), 5-10 parts of maleic anhydride grafted POE (polyolefin elastomer), 0.5-1.5 parts of sorbitol, 2-3 parts of polyethylene glycol, 2-3 parts of dicumyl peroxide, 0.4-0.6 parts of antioxidant DLTP (dilauryl thiodipropionate), 3-4 parts of triallyl isocyanurate, 2-3 parts of polydimethylsiloxane and the like. According to the cable material and the method, maleic anhydride grafted EVA and maleic anhydride grafted POE with good compatibility with low-density polyethylene are added to improve a polyethene structure, and sorbitol, polyethylene glycol, polydimethylsiloxane and the like are added to inhibit water tree formation, so that the water tree aging resistance and physical and mechanical properties of the polyethylene cable material are improved obviously; a technical bottle neck of water tree growth of the cable insulation layer is solved; the service life of a cable is prolonged; and the cable safety during use is improved.

Description

technical field [0001] The invention relates to a cable material and a preparation method thereof, in particular to a water tree-resistant polyethylene insulated cable material and a preparation method thereof. Background technique [0002] Polyethylene cables have become the mainstream of power cables due to their excellent electrical properties, large transmission capacity, good heat resistance, easy bending, simple accessory joints, and convenient installation and laying. The effect of chemical and other factors will cause aging, especially the phenomenon of water tree aging, which greatly affects the reliability of polyethylene cables for long-term use, and makes the cables enter the aging period ahead of time, thus laying a major hidden danger for the safe operation of the power grid. Contents of the invention [0003] The object of the present invention is to provide a water-tree-resistant polyethylene insulating cable material and a preparation method thereof, impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L51/06C08L71/08C08L83/04H01B3/44C08K13/06C08K9/04C08K3/34C08K5/053C08K5/14C08K5/3492C08K3/30C08K3/22C08K5/09C08K7/08C08K3/04C08K5/12C08K5/378B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/92B29C2948/92704B29C2948/92895
Inventor 许义彬
Owner JING FENG GRP
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