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Weather-resistant medium-voltage power cable

A power cable and weather-resistant technology, used in the field of weather-resistant medium-voltage power cables, can solve the problems of poor weather resistance of the polyolefin outer sheath and can not meet the needs of people, and achieve excellent anti-oxidation performance, improve compatibility, good mechanical properties

Inactive Publication Date: 2019-05-21
ANHUI TIAN CHANG INSTR FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the rapid development of the communication industry, it has developed from the simple telephone and telegraph cables in the past to thousands of pairs of telephone cables, coaxial cables, optical cables, data cables, and even combined communication cables. The requirements for cable materials have also come and gone. High, the weather resistance of the polyolefin outer sheath is poor, and gradually cannot meet the needs of the full population

Method used

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  • Weather-resistant medium-voltage power cable
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Examples

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Effect test

Embodiment 1

[0015] A weather-resistant medium-voltage power cable, including a cable core, an insulating layer, a shielding layer, a refractory layer and an outer sheath, wherein the raw materials of the outer sheath include 40 parts by weight of polypropylene, hydrogenated styrene-butadiene 40 parts of block copolymer, 3 parts of fluorine-containing polyether ester, 2 parts of phthalate, 1 part of nano-phenyl phosphonate, 1 part of antioxidant, 1 part of stabilizer, 1 part of coupling agent , 1 part of dispersant.

[0016] Among them, the perfluoropolyether ester is prepared by the following process: weigh diethyldiethoxysilane, methyldecyldichlorosilane and perfluoropolyether acid in a molar ratio of 1:2:1, Partially, add catalyst and methyldecyldichlorosilane to diethyldiethoxysilane, heat up to 100°C, reflux for 12 hours, and distill fractions under reduced pressure to obtain prefabricated material; Add the polyether acid into the acetone solvent, add the preformed material dropwise,...

Embodiment 2

[0018] A weather-resistant medium-voltage power cable, including a cable core, an insulating layer, a shielding layer, a refractory layer, and an outer sheath, wherein the raw materials of the outer sheath include: 60 parts by weight of polypropylene, hydrogenated styrene-butadiene 60 parts of block copolymer, 8 parts of fluorine-containing polyether ester, 6 parts of phthalate, 4 parts of nano-phenyl phosphonate, 3 parts of antioxidant, 2 parts of stabilizer, 5 parts of coupling agent , 3 parts of dispersant.

[0019] Among them, the perfluoropolyether ester is prepared by the following process: Diethyldiethoxysilane, methyldecyldichlorosilane and perfluoropolyether acid are weighed in a molar ratio of 3:5:4, and the Partially, add catalyst and methyldecyldichlorosilane to diethyldiethoxysilane, raise the temperature to 110°C, reflux for 16 hours, and distill under reduced pressure to obtain fractions to obtain prefabricated materials; Add polyether acid into acetone solvent...

Embodiment 3

[0021] A weather-resistant medium-voltage power cable, including a cable core, an insulating layer, a shielding layer, a refractory layer and an outer sheath, wherein the raw materials of the outer sheath include: 50 parts by weight of polypropylene, hydrogenated styrene-butadiene 50 parts of block copolymer, 5 parts of fluorine-containing polyether ester, 4 parts of phthalate, 2 parts of nano-phenyl phosphonate, 2 parts of antioxidant, 1.5 parts of stabilizer, 3 parts of coupling agent , 2 parts of dispersant.

[0022] Among them, the perfluoropolyether ester is prepared by the following process: Diethyldiethoxysilane, methyldecyldichlorosilane and perfluoropolyether acid are weighed in a molar ratio of 2:5:3, and the Add catalyst and methyldecyldichlorosilane to diethyldiethoxysilane, raise the temperature to 105°C, reflux for 14 hours, and distill under reduced pressure to obtain a prefabricated material; Add polyether acid into acetone solvent, add prefabricated material ...

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Abstract

The invention discloses a weather-resistant medium-voltage power cable which comprises a cable core, an insulating layer, a shielding layer, a refractory layer and an outer sheath, wherein the outer sheath comprises the following raw materials: polypropylene, a hydrogenated styrene-butadiene block copolymer, fluoropolyether ester, phthalic acid sulfonate, nano-phenyl phosphonate, an antioxidant, astabilizer, a coupling agent and a dispersant, wherein the fluoropolyether ester is prepared by the following process: adding a catalyst and methyl decyl dichlorosilane into diethyldiethoxysilane under a nitrogen atmosphere, after performing temperature rise and refluxing, carrying out reduced pressure distillation to take a distillate to prepare a prefabricated material; adding perfluoropolyether acid into an acetone solvent, adding the prefabricated material dropwise, heating and stirring for a reaction, removing acetone and drying to obtain fluoropolyether ester. The outer sheath of the medium-voltage power cable disclosed by the invention has excellent cold resistance and oxidation resistance and good mechanical properties.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a weather-resistant medium-voltage power cable. Background technique [0002] A power cable is composed of one or more insulated cores, and their respective covering layers, total protective layer and outer sheath, and the cable may also have additional uninsulated conductors. Materials for power cable products can be divided into conductive materials, insulating materials, filling materials, shielding materials, sheath materials, etc. according to their use parts and functions. Some of these materials are common to several structural parts, such as thermoplastic materials, such as polyvinyl chloride, polyethylene, etc., which can be used on insulation or sheathing as long as part of the formula is changed. With the rapid development of the communication industry, it has developed from the simple telephone and telegraph cables in the past to thousands of pairs of telepho...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L53/02C08L71/00C08K5/42C08K5/5317H01B3/44
Inventor 夏喜明梁钰张萍
Owner ANHUI TIAN CHANG INSTR FACTORY
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