CN107828199A - A kind of high voltage insulation cable - Google Patents

A kind of high voltage insulation cable Download PDF

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Publication number
CN107828199A
CN107828199A CN201710918345.9A CN201710918345A CN107828199A CN 107828199 A CN107828199 A CN 107828199A CN 201710918345 A CN201710918345 A CN 201710918345A CN 107828199 A CN107828199 A CN 107828199A
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parts
insulating barrier
cable
porous ceramics
cable according
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舒春柳
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Sichuan Lizhi Jiuchuang Intellectual Property Operations Ltd
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Sichuan Lizhi Jiuchuang Intellectual Property Operations Ltd
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Priority to CN201710918345.9A priority Critical patent/CN107828199A/en
Publication of CN107828199A publication Critical patent/CN107828199A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • H01B13/148—Selection of the insulating material therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/003—Additives being defined by their diameter
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Organic Insulating Materials (AREA)

Abstract

The invention discloses a kind of high voltage insulation cable, including：An at least conductor thread core, the insulating barrier being paperwrapped in outside the conductor thread core, the screen layer being paperwrapped in outside the insulating barrier, cladding are around in the restrictive coating outside the screen layer；The insulating barrier is prepared including following parts by weight raw material：0.3 0.8 parts of nano aluminium oxide, 8 12 parts of porous ceramics, 0.001 0.003 parts of graphene, 12 18 parts of polyoxy ethyl benzoate, 55 75 parts of makrolon, 0.5 1.2 parts of coupling agent, 15 parts of stabilizer；By by modification, there is the modification material of polycarbonate of superior insulation, resistance to ag(e)ing and resistance to sparking as insulating barrier, so as to improve the breakdown voltage of insulated cable, the insulated cable is used as high-tension cable.

Description

A kind of high voltage insulation cable
Technical field
The present invention relates to field of cables, and in particular to a kind of high voltage insulation cable.
Background technology
Cable is to be fabricated to conductor thread core by twisted with one or more wire, then corresponding insulation is imposed on conductor Layer, the wire that outside is wrapped sealing sheath and formed, is mainly made up of core, insulating barrier, screen layer and restrictive coating.Cable has Take ground and space is few；Power supply safety is reliable, and electric shock possibility is small；Be advantageous to improve the power factor of power system；Operation, Maintenance work is simple and convenient；Be advantageous to beautifying city, there is many advantages, such as confidentiality, in being widely used in living and producing Every field.
The effect of insulating barrier is will to be electrically isolated from each other between core and the earth and out of phase core in cable, from And ensure not occurring when conveying electric energy relatively or alternate puncture short.By experiment and long-term use of empirical evidence, Gao Pin In the cable of matter, the material of insulating barrier needs have following performance：Compressive resistance is high；Dielectric loss angle tangent is low；Inverter fed motor Performance is good；Stable chemical performance；It is low temperature resistant；Heat resistance is good；Machining property is good；Service life is grown.Existing insulating barrier Material is broadly divided into several major classes such as oil-paper, rubber, polyethylene, polyvinyl chloride and crosslinked polyethylene, although can meet conventional The performance requirement of cable, but when for preparing the cable used under particular surroundings, its performance shows slightly deficiency.
Makrolon is the high molecular polymer containing carbonate group in strand, and makrolon material has preferably comprehensive Performance is closed, makrolon water white transparency, heat-resisting, shock resistance, good flame resistance, excellent insulation performance, dielectric constant is small, compact dimensions Stability is good, has many advantages, such as good mechanical performance in temperature in use；But due to ester group be present in makrolon, Meeting quick aging, performance quickly reduce under the conditions of ultraviolet, corona etc., thus, it is exhausted that makrolon material is not suitable for high pressure The insulating barrier of edge cable.
The content of the invention
The defects of it is an object of the invention to overcome existing polycarbonate modified insulated cable breakdown potential to force down, there is provided a kind of High voltage insulation cable；The present invention will pass through modification, the poly- carbonic acid with superior insulation, heat-resisting quantity and resistance to sparking Ester modified material is as insulating barrier, so as to improve the breakdown voltage of insulated cable, the cable is made as high-tension cable With.
In order to realize foregoing invention purpose, the invention provides a kind of high voltage insulation cable, including：An at least conductor lines Core, the insulating barrier being paperwrapped in outside the conductor thread core, the screen layer being paperwrapped in outside the insulating barrier, cladding are around in the screen layer Outer restrictive coating；The insulating barrier is prepared including following parts by weight raw material：The nano aluminium oxide, 8-12 of 0.3-0.8 parts The porous ceramics, the graphene of 0.001-0.003 parts of part, the polyoxy ethyl benzoate of 12-18 parts, the poly- carbonic acid of 55-75 parts Ester, the coupling agent of 0.5-1.2 parts, the stabilizer of 1-5 parts.
A kind of high voltage insulation cable of the present invention, the insulating barrier of the cable are selected by modification, have superior insulation The modification material of polycarbonate of property, resistance to ag(e)ing and resistance to sparking, makes the polycarbonate modified insulating barrier of cable in high-pressure situations Under can long-time stable work；And then make that polycarbonate modified cable application scope is wider, and application field is more.
A kind of above-mentioned high voltage insulation cable, wherein, the amount of graphene needs to control in prescribed limit, and dosage is excessive, absolutely Edge resistivity of material is greatly reduced, and insulating properties reduces；Dosage is very few, small to insulating materials modifying function, action effect unobvious； Preferably, described graphene dosage is 0.002 part.
Wherein, described polyoxy ethyl benzoate is all good to porous ceramics and polycarbonate modified compatibility, can increase Add the bonding capability between inorganic material and organic material interface, reduce the probability of happening of corona and electrical treeing.
A kind of above-mentioned high voltage insulation cable, wherein, it is preferred that the particle diameter of described nano aluminium oxide is 2-10nm；Diameter It is excessive, it is impossible to be supported in the hole of porous ceramic particles；Diameter is too small, is unfavorable for disperseing.
A kind of above-mentioned high voltage insulation cable, wherein, described porous ceramics particle diameter is 0.1-2 μm；Particle diameter is excessive, in system Middle poor compatibility, easily produces Interface Crack；Particle diameter is too small, it is impossible to loads nano aluminium oxide.
Wherein, the porosity of described porous ceramic particles is 20-40%；Porosity is excessive, and hole is more, and air content is big, Easily make polycarbonate modified producing bubbles inside in process of production, reduce breakdown voltage on the contrary；Porosity is too small, it is impossible to complete Full load nano alumina particles.
Wherein, the aperture of described porous ceramics is 20-50nm；Aperture is too big, and nanoalumina loadings are uneven, easy heap Product, has an impact to material breakdown voltage；Aperture is too small, and nano aluminium oxide can not enter hole.
A kind of above-mentioned high voltage insulation cable, wherein, described coupling agent is silane coupler；Silane coupler can increase profound Compatibility between military rock fiber and high polymer material, improve the electrical property of modification material of polycarbonate.
Wherein, described stabilizer is fatty acid zinc；Stabilizer can improve the chemical stability of makrolon, reduce aging Speed, increase service life.
A kind of above-mentioned high voltage insulation cable, wherein, described conductor thread core is the wire being prepared by conductive material；It is excellent Choosing, described conductor material is one kind in copper, aluminium and its alloy.
Wherein, described screen layer is made up of shielding material；Preferably, described shielding material is composite shielding material.
Wherein, described restrictive coating includes inner sheath, inner liner, armor and serving；Restrictive coating energy sealing protection electricity Cable prevents external force from directly damaging cable internal structure from the intrusion of introduced contaminants and moisture.
A kind of above-mentioned high voltage insulation cable, wherein, described insulating barrier is prepared by following steps：
（1）Porous ceramics is handled with coupling agent；
（2）By graphene and nanoalumina loadings on porous ceramics；
（3）The porous ceramics for being loaded with graphene and nano aluminium oxide is coated to obtain centre with polyoxy ethyl benzoate Body；
（4）Carried out with extruder crosslinked extrused after intermediate is well mixed with polycarbonate modified, stabilizer, obtain poly- carbonic acid Ester modified material；
（5）Modification material of polycarbonate is paperwrapped in outside conductor thread core, forms insulating barrier.
Wherein, it is preferred that step 3 is coated in condition of negative pressure；Under condition of negative pressure, the air in porous ceramics can be certainly It is dynamic to overflow, so that polyoxy ethyl benzoate is filled into hole, solid construction is formed, reducing the presence of air makes breakdown The influence that voltage reduces.
Compared with prior art, beneficial effects of the present invention：
1st, the insulating barrier of cable of the present invention contains porous ceramics-polyoxy ethyl benzoate system, can effectively reduce makrolon Modified electrical treeing and corona phenomenon, improves the breakdown voltage of insulating barrier, cable is used as high-tension cable.
Embodiment
With reference to test example and embodiment, the present invention is described in further detail.But this should not be understood Following embodiment is only limitted to for the scope of the above-mentioned theme of the present invention, it is all that this is belonged to based on the technology that present invention is realized The scope of invention.
Embodiment 1
A kind of high voltage insulation cable, is followed successively by from inside to outside：
Conductor thread core：Copper conductor；
Insulating barrier：It is prepared by the following method to obtain：（1）Particle diameter by 10 parts is 1 μm, porosity 25%, aperture are 35nm more Hole ceramics are handled with 0.8 part of silane coupler；
（2）It is 5nm nanoalumina loadings on porous ceramics by 0.002 part of graphene and 0.5 part of particle diameter；
（3）With 15 parts of polyoxy ethyl benzoate to being loaded with the porous ceramics of graphene and nano aluminium oxide in condition of negative pressure Under coated to obtain intermediate；
（4）Extruded, gathered with extruder after intermediate is well mixed with 65 parts of makrolon, 3 parts of fatty acid zincs Carbonate-modified material；
（5）Modification material of polycarbonate is paperwrapped in outside conductor thread core, forms insulating barrier；
Screen layer：Carbon fiber-polyvinyl chloride composite shielding material；
Restrictive coating：Inner sheath, inner liner, armor and serving.
Embodiment 2
A kind of high voltage insulation cable, is followed successively by from inside to outside：
Conductor thread core：Copper aluminum alloy wire；
Insulating barrier：It is prepared by the following method to obtain：（1）Particle diameter by 8 parts is 2 μm, porosity 40%, aperture are 50nm more Hole ceramics are handled with 0.5 part of silane coupler；
（2）It is 10nm nanoalumina loadings on porous ceramics by 0.003 part of graphene and 0.3 part of particle diameter；
（3）With 12 parts of polyoxy ethyl benzoate to being loaded with the porous ceramics of graphene and nano aluminium oxide in condition of negative pressure Under coated to obtain intermediate；
（4）Extruded, gathered with extruder after intermediate is well mixed with 55 parts of makrolon, 1 part of fatty acid zinc Carbonate-modified material；
（5）Modification material of polycarbonate is paperwrapped in outside conductor thread core, forms insulating barrier；
Screen layer：Carbon fiber-polyphenylene sulfide composite shielding material；
Restrictive coating：Inner sheath, inner liner, armor and serving.
Embodiment 3
A kind of high voltage insulation cable, is followed successively by from inside to outside：
Conductor thread core：Aluminum conductor；
Insulating barrier：It is prepared by the following method to obtain：（1）Particle diameter by 12 parts is 0.1 μm, porosity 20%, aperture 20nm Porous ceramics is handled with 1.2 parts of silane coupler；
（2）It is 2nm nanoalumina loadings on porous ceramics by 0.001 part of graphene and the particle diameter of 0.8 part of part；
（3）With 18 parts of polyoxy ethyl benzoate to being loaded with the porous ceramics of graphene and nano aluminium oxide in condition of negative pressure Under coated to obtain intermediate；
（4）Extruded, gathered with extruder after intermediate is well mixed with 75 parts of makrolon, 5 parts of fatty acid zincs Carbonate-modified material；
（5）Modification material of polycarbonate is paperwrapped in outside conductor thread core, forms insulating barrier；
Sealant：Silicon rubber；
Screen layer：Carbon fiber-polycarbonate modified composite shielding material；
Restrictive coating：Inner sheath, inner liner, armor and serving.
Embodiment 4
A kind of high voltage insulation cable, is followed successively by from inside to outside：
Conductor thread core：Copper alloy wire；
Insulating barrier：It is prepared by the following method to obtain：（1）Particle diameter by 10 parts is 5 μm, porosity 50%, aperture are 60nm more Hole ceramics are handled with 1.2 parts of silane coupler；
（2）It is 15nm nanoalumina loadings on porous ceramics by 0.002 part of graphene and 0.5 part of particle diameter；
（3）With 15 parts of polyoxy ethyl benzoate to being loaded with the porous ceramics of graphene and nano aluminium oxide in condition of negative pressure Under coated to obtain intermediate；
（4）Extruded, gathered with extruder after intermediate is well mixed with 65 parts of makrolon, 3 parts of fatty acid zincs Carbonate-modified material；
（5）Modification material of polycarbonate is paperwrapped in outside conductor thread core, forms insulating barrier；
Sealant：Polytetrafluoroethylene (PTFE)；
Screen layer：Metallic fiber-polycarbonate modified composite shielding material；
Restrictive coating：Inner sheath, inner liner, armor and serving.
Comparative example 1
A kind of cable, is followed successively by from inside to outside：
Conductor thread core：Copper conductor；
Insulating barrier：It is prepared by the following method to obtain：（1）Particle diameter by 10 parts is 1 μm, porosity 25%, aperture are 35nm more Hole ceramics are handled with 0.8 part of silane coupler；
（2）By 0.5 part of particle diameter be 5nm nanoalumina loadings on porous ceramics；
（3）With 15 parts of polyoxy ethyl benzoate to being loaded with the porous ceramics of graphene and nano aluminium oxide in condition of negative pressure Under coated to obtain intermediate；
（4）Extruded, gathered with extruder after intermediate is well mixed with 65 parts of makrolon, 3 parts of fatty acid zincs Carbonate-modified material；
（5）Modification material of polycarbonate is paperwrapped in outside conductor thread core, forms insulating barrier；
Screen layer：Carbon fiber-polyvinyl chloride composite shielding material；
Restrictive coating：Inner sheath, inner liner, armor and serving.
Comparative example 2
A kind of cable, is followed successively by from inside to outside：
Conductor thread core：Copper conductor；
Insulating barrier：It is prepared by the following method to obtain：（1）Particle diameter by 10 parts is 1 μm, porosity 25%, aperture are 35nm more Hole ceramics are handled with 0.8 part of silane coupler；
（2）It is graphene-supported on porous ceramics by 0.002 part；
（3）With 15 parts of polyoxy ethyl benzoate to being loaded with the porous ceramics of graphene and nano aluminium oxide in condition of negative pressure Under coated to obtain intermediate；
（4）Extruded, gathered with extruder after intermediate is well mixed with 65 parts of makrolon, 3 parts of fatty acid zincs Carbonate-modified material；
（5）Modification material of polycarbonate is paperwrapped in outside conductor thread core, forms insulating barrier；
Screen layer：Carbon fiber-polyvinyl chloride composite shielding material；
Restrictive coating：Inner sheath, inner liner, armor and serving.
Comparative example 3
A kind of cable, is followed successively by from inside to outside：
Conductor thread core：Copper conductor；
Insulating barrier：It is prepared by the following method to obtain：（1）Particle diameter by 10 parts is 1 μm, porosity 25%, aperture are 35nm more Hole ceramics are handled with 0.8 part of silane coupler；
（2）It is 5nm nanoalumina loadings on porous ceramics by 0.002 part of graphene and 0.5 part of particle diameter；
（3）With 15 parts of polyoxy ethyl benzoate to being loaded with the porous ceramics of graphene and nano aluminium oxide in condition of negative pressure Under coated to obtain intermediate；
（4）Extruded after intermediate is well mixed with 65 parts of makrolon with extruder, obtain polycarbonate modified material Material；
（5）Modification material of polycarbonate is paperwrapped in outside conductor thread core, forms insulating barrier；
Screen layer：Carbon fiber-polyvinyl chloride composite shielding material；
Restrictive coating：Inner sheath, inner liner, armor and serving.
Comparative example 4
A kind of cable, is followed successively by from inside to outside：
Conductor thread core：Copper conductor；
Insulating barrier：It is prepared by the following method to obtain：（1）Particle diameter by 10 parts is 1 μm, porosity 25%, aperture are 35nm more Hole ceramics are handled with 0.8 part of silane coupler；
（2）It is 5nm nanoalumina loadings on porous ceramics by 0.005 part of graphene and 0.5 part of particle diameter；
（3）With 15 parts of polyoxy ethyl benzoate to being loaded with the porous ceramics of graphene and nano aluminium oxide in condition of negative pressure Under coated to obtain intermediate；
（4）Extruded, gathered with extruder after intermediate is well mixed with 65 parts of makrolon, 3 parts of fatty acid zincs Carbonate-modified material；
（5）Modification material of polycarbonate is paperwrapped in outside conductor thread core, forms insulating barrier；
Screen layer：Carbon fiber-polyvinyl chloride composite shielding material；
Restrictive coating：Inner sheath, inner liner, armor and serving.
By the cable in above-described embodiment 1-4 and comparative example 1-4, breakdown voltage detection is carried out, record data is as follows：
Numbering Breakdown voltage（KV）
Embodiment 1 ≥83
Embodiment 2 ≥85
Embodiment 3 ≥84
Embodiment 4 ≥83
Comparative example 1 ≥41
Comparative example 2 ≥35
Comparative example 3 ≥81
Comparative example 4 ≥21
Above-mentioned experimental data understands that embodiment 1-4 uses the cable that technical solution of the present invention obtains, and breakdown voltage is high, can conduct High-tension cable uses；The cable that comparative example 1-4 is not obtained using technical solution of the present invention, breakdown voltage significantly reduce.

Claims (10)

1. a kind of high voltage insulation cable, including：An at least conductor thread core, the insulating barrier being paperwrapped in outside the conductor thread core, bag The screen layer that is around in outside the insulating barrier, cladding are around in the restrictive coating outside the screen layer；Characterized in that, the insulating barrier bag Following parts by weight raw material are included to be prepared：The nano aluminium oxide of 0.3-0.8 parts, the porous ceramics of 8-12 parts, 0.001-0.003 The graphene of part, the polyoxy ethyl benzoate of 12-18 parts, the makrolon of 55-75 parts, the coupling agent, 1-5 of 0.5-1.2 parts The stabilizer of part.
2. cable according to claim 1, it is characterised in that described graphene parts by weight are 0.002 part.
3. cable according to claim 1, it is characterised in that the particle diameter of described nano aluminium oxide is 2-10nm.
4. cable according to claim 1, it is characterised in that the porosity of described porous ceramic particles is 20-40%.
5. cable according to claim 1, it is characterised in that described porous ceramics particle diameter is 0.1-2 μm.
6. cable according to claim 1, it is characterised in that the aperture of described porous ceramics is 20-50nm.
7. cable according to claim 1, it is characterised in that described coupling agent is silane coupler.
8. cable according to claim 1, it is characterised in that described stabilizer is fatty acid zinc.
9. cable according to claim 1, it is characterised in that described insulating barrier is prepared by following steps：
（1）Porous ceramics is handled with coupling agent；
（2）By graphene and nanoalumina loadings on porous ceramics；
（3）The porous ceramics for being loaded with graphene and nano aluminium oxide is coated to obtain centre with polyoxy ethyl benzoate Body；
（4）Carried out with extruder crosslinked extrused after intermediate is well mixed with polycarbonate modified, stabilizer, obtain poly- carbonic acid Ester modified material；
（5）Modification material of polycarbonate is paperwrapped in outside conductor thread core, forms insulating barrier.
10. cable according to claim 9, it is characterised in that step 3 is coated in condition of negative pressure.
CN201710918345.9A 2017-09-30 2017-09-30 A kind of high voltage insulation cable Withdrawn CN107828199A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110890166A (en) * 2019-11-29 2020-03-17 西安戴森电子技术有限公司 Insulated cable and preparation method of insulating layer thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110890166A (en) * 2019-11-29 2020-03-17 西安戴森电子技术有限公司 Insulated cable and preparation method of insulating layer thereof

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