CN107633914A - A kind of high-tension cable - Google Patents
A kind of high-tension cable Download PDFInfo
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- CN107633914A CN107633914A CN201710922645.4A CN201710922645A CN107633914A CN 107633914 A CN107633914 A CN 107633914A CN 201710922645 A CN201710922645 A CN 201710922645A CN 107633914 A CN107633914 A CN 107633914A
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Abstract
The invention discloses a kind of high-tension 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：10 20 parts of basalt fibre, 0.001 0.003 parts of graphene, 10 20 parts of vinylsiloxane rubber, 50 70 parts of polyethylene, 5 12 parts of modifying agent, 0.1 0.5 parts of crosslinking agent；By by modification, there is the polythene material of superior insulation, heat-resisting quantity and resistance to sparking as insulating barrier, so as to improve the breakdown voltage of polyethylene insulated cable, polyethylene insulated cable is used as high-tension cable.
Description
Technical field
The present invention relates to field of cables, and in particular to a kind of high-tension 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 cable is exhausted
Edge layer material is broadly divided into several major classes such as oil-paper, rubber, polyethylene, polyvinyl chloride and crosslinked polyethylene, although can meet
The performance requirement of normal cable, but when for preparing the cable used under particular surroundings, its performance shows slightly deficiency.
Polyethylene（Abbreviation PE）A kind of aggregated obtained thermoplastic resin of ethene, industrially, also including ethene with
The copolymer of a small amount of alpha-olefin.Polyethylene is odorless, nontoxic, feel ceraceous, has excellent resistance to low temperature（Minimum temperature in use
Reachable -100 ~ -70 °C）, chemical stability is good, is resistant to the erosion of most of soda acids, and water imbibition is small, and electrical insulating property is excellent.It is existing
Although the polyethylene insulation layer material used in some cables has the advantages of good insulating, cost are low, and processability is good, also deposit
The breakdown voltage the shortcomings that, thus, polythene material is not suitable for the insulating barrier of high-tension cable.
The content of the invention
A kind of the defects of it is an object of the invention to overcome existing polyethylene insulated cable breakdown potential to force down, there is provided high-tension electricity
Cable；The present invention has the polythene material of superior insulation, heat-resisting quantity and resistance to sparking as exhausted by by modification
Edge layer, so as to improve the breakdown voltage of polyethylene insulated cable, make polyethylene insulated cable to be used as high-tension cable.
In order to realize foregoing invention purpose, the invention provides a kind of high-tension cable, including：An at least conductor thread core,
The insulating barrier that is paperwrapped in outside the conductor thread core, the screen layer being paperwrapped in outside the insulating barrier, cladding are around in outside the screen layer
Restrictive coating；The insulating barrier is prepared including following parts by weight raw material：The basalt fibre, 0.001- of 10-20 parts
0.003 part of graphene, the vinylsiloxane rubber of 10-20 parts, the polyethylene of 50-70 parts, the modifying agent, 0.1-0.5 of 5-12 parts
The crosslinking agent of part.
A kind of high-tension cable of the present invention, the insulating barrier of the cable are selected by modification, have superior insulation, resistance to
The high temperatures and polythene material of resistance to sparking, makes the polyethylene layer of cable can long-time stable work under high-pressure situations
Make；And then make that PE cable application is wider, and application field is more.
A kind of above-mentioned high-tension cable, wherein, it is 2-4 ︰ 1-3 hydrogen peroxide and organic that described modifying agent, which includes mass ratio,
Acid；The modifying agent quickly can carry out burn into activation to basalt fibre surface, form rough surface, and be grafted a large amount of activity
Group, not only increase load capacity of the basalt fibre to graphene, improve basalt fibre and vinylsiloxane rubber it
Between chemical bonding and mechanical riveted ability, moreover it is possible to prevent fast-growth of the breakdown channel along basalt fibre interface, improve
The breakdown voltage of insulating materials；Described mechanical riveted refer to matrix material by shrinkage stress pack tightly the fiber of rough surface and
Caused frictional engagement.
Wherein, the amount of graphene needs to control in prescribed limit, and dosage is excessive, and insulating materials resistivity is greatly reduced,
Insulating properties reduces；Dosage is very few, small to insulating materials modifying function, action effect unobvious；Preferably, described graphene is used
Measure as 0.002 part.
Wherein, described vinylsiloxane rubber is all good to the compatibility of basalt fibre and polyethylene, can increase inorganic material
Bonding capability between material and organic material interface, reduce the probability of happening of corona and electrical treeing.
Wherein, described organic acid is the one or more in formic acid, acetic acid, ethanedioic acid, butene dioic acid, acrylic acid.
A kind of above-mentioned high-tension cable, wherein, described basalt fibre length≤2mm, a diameter of 1-5 μm.
A kind of above-mentioned high-tension cable, wherein, it is 0.1-1.5%'s that percetage by weight is included in described basalt fibre
Nano aluminium oxide, nano aluminium oxide can stop the development of breakdown channel, improve the breakdown strength of basalt fibre；Described receives
The content of rice aluminum oxide must be controlled in prescribed limit, and its dosage is excessive, nano aluminium oxide can be caused to be risen in electric field action
Leading role, the breakdown strength of basalt fibre is reduced on the contrary, dosage is very few, and role is small, to basalt fibre
Breakdown strength increasing action is small；Preferably, the percentage by weight of described nano aluminium oxide is 0.5-1.2%.Wherein, it is preferred that
A diameter of 2-10nm of described nano aluminium oxide；Diameter is excessive, and compatibility reduces, and the barrier effect of breakdown channel is reduced,
Diameter is too small, is unfavorable for disperseing.
Wherein, it is preferred that described nano aluminium oxide is the alumina whisker that draw ratio is 1.5-3 ︰ 1；Whisker can be embedded in
It is more preferable to the barrier effect of breakdown channel in different crystal phase structures；Draw ratio is too small, poor to the barrier effect of breakdown channel,
Draw ratio is excessive, and winding or fracture easily occurs, is unfavorable for the modification to basalt fibre.
A kind of above-mentioned high-tension cable, wherein, 0.6-2.8% nano silicon is also included in described basalt fibre,
Nano silicon can influence crystalline phase distribution and size in basalt fibre, crystalline phase in basalt fibre is more evenly distributed, greatly
Small difference is smaller, make basalt fibre Inverter fed motor and electrical treeing performance it is more preferable；The content of described nano silicon
It must control in prescribed limit, content is excessive, and nano silicon easily gathers, and crystalline phase in basalt fibre is divided on the contrary
Cloth impacts, and makes the reduction of the performance of its Inverter fed motor and electrical treeing, content is too small, to basalt fibre uniformity influence
It is small；Preferably, the percentage by weight of described nano silicon is 1.2-2.1%.
Wherein, it is preferred that the particle diameter of described nano silicon is 5-20nm；Particle diameter is excessive, brilliant in basalt fibre
Phase diameter is big, and Inverter fed motor and electrical treeing humidification are reduced；Particle diameter is too small, is unfavorable for disperseing.
Wherein, described crosslinking agent is VTES；Polyethylene can not only be made to be crosslinked with silicon rubber,
Formed tridimensional network, make material structure more stable, high temperature resistant and decay resistance are stronger, moreover it is possible to improve basalt fibre with
It is interface characteristics between high polymer material, make electronics be not easy to gather, improve the breakdown voltage of material.
A kind of above-mentioned high-tension cable, wherein, described conductor thread core is the wire being prepared by conductive material；It is preferred that
, 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-tension cable, wherein, described insulating barrier is prepared by following steps：
（1）Basalt fibre is handled with modifying agent, obtains treated basalt fiber；
（2）By graphene-supported on treated basalt fiber；
（3）Vinylsiloxane rubber is mixed into extrusion with being loaded with the treated basalt fiber of graphene and obtains intermediate；
（4）Extruded after intermediate is well mixed with polyethylene, crosslinking agent with extruder, obtain cable insulation layer material；
（5）Insulating layer material is paperwrapped in outside conductor thread core, forms insulating barrier.
Compared with prior art, beneficial effects of the present invention：
1st, the insulating barrier of cable of the present invention is basalt fibre modified polyethylene material, adds the breakdown potential of cable insulation
Pressure, makes that the application of cable is wider, application field is more.
2nd, the basalt fibre paper in cable of the present invention contains nano aluminium oxide or silica, can significantly improve basalt
The electrical property of fiber, it is set to be particularly suited for the insulating barrier of 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-tension 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）Containing percetage by weight it is that 0.8% draw ratio is 2 ︰ 1, diameter by 15 parts
Alumina whisker for 5nm and basalt fibre that 1.6% particle diameter is 10nm nano silicons include mass ratio with 8 parts
Handled for 3 ︰ 2 hydrogen peroxide and acetic acid, obtain treated basalt fiber；
（2）0.002 part of graphene uniform is supported on treated basalt fiber；
（3）15 parts of vinylsiloxane rubbers are mixed into extrusion with being loaded with the treated basalt fiber of graphene and obtain intermediate；
（4）Squeezed after intermediate is well mixed with 60 parts of polyethylene, 0.3 part of VTES with extruder
Go out, obtain cable insulation layer material；
（5）Insulating layer material 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-tension 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）With 8 parts it is 2 ︰ 1 including mass ratio by 15 parts of parabasalt fibers
Hydrogen peroxide and formic acid handled, obtain treated basalt fiber；
（2）0.002 part of graphene uniform is supported on treated basalt fiber；
（3）15 parts of vinylsiloxane rubbers are mixed into extrusion with being loaded with the treated basalt fiber of graphene and obtain intermediate；
（4）Squeezed after intermediate is well mixed with 60 parts of polyethylene, 0.3 part of VTES with extruder
Go out, obtain cable insulation layer material；
（5）Insulating layer material 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-tension 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）By 10 parts containing percetage by weight be 0.1% draw ratio be 1.5 ︰ 1, it is straight
The alumina whisker that footpath is 10nm and the basalt fibre that 2.8% particle diameter is 2nm nano silicons include quality with 5 parts
Than the hydrogen peroxide for 4 ︰ 1 and ethanedioic acid, handled, obtain treated basalt fiber；
（2）0.001 part of graphene uniform is supported on treated basalt fiber；
（3）20 parts of vinylsiloxane rubbers are mixed into extrusion with being loaded with the treated basalt fiber of graphene and obtain intermediate；
（4）Squeezed after intermediate is well mixed with 70 parts of polyethylene, 0.1 part of VTES with extruder
Go out, obtain cable insulation layer material；
（5）Insulating layer material is paperwrapped in outside conductor thread core, forms insulating barrier；
Sealant：Silicon rubber；
Screen layer：Carbon fiber-polyethylene composite shielding material；
Restrictive coating：Inner sheath, inner liner, armor and serving.
Embodiment 4
A kind of high-tension 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）Containing percetage by weight it is that 1.5% draw ratio is 3 ︰ 1, diameter by 20 parts
Alumina whisker for 2nm and basalt fibre that 0.6% particle diameter is 20nm nano silicons include mass ratio with 12 parts
Handled for 2 ︰ 3 hydrogen peroxide and butene dioic acid, obtain treated basalt fiber；
（2）0.003 part of graphene uniform is supported on treated basalt fiber；
（3）20 parts of vinylsiloxane rubbers are mixed into extrusion with being loaded with the treated basalt fiber of graphene and obtain intermediate；
（4）Squeezed after intermediate is well mixed with 50 parts of polyethylene, 0.5 part of VTES with extruder
Go out, obtain cable insulation layer material；
（5）Insulating layer material is paperwrapped in outside conductor thread core, forms insulating barrier；
Sealant：Polytetrafluoroethylene (PTFE)；
Screen layer：Metallic fiber-polyethylene 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）0.002 part of graphene uniform is loaded 15 parts and contains percetage by weight
It is 2 ︰ 1 for 0.8% draw ratio, a diameter of 5nm alumina whisker and basalt that 1.6% particle diameter is 10nm nano silicons
On fiber；
（2）15 parts of vinylsiloxane rubbers are mixed into extrusion with being loaded with the treated basalt fiber of graphene and obtain intermediate；
（3）Squeezed after intermediate is well mixed with 60 parts of polyethylene, 0.3 part of VTES with extruder
Go out, obtain cable insulation layer material；
（4）Insulating layer material 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）Containing percetage by weight it is that 0.8% draw ratio is 2 ︰ 1, diameter by 15 parts
Alumina whisker for 5nm and basalt fibre that 1.6% particle diameter is 10nm nano silicons include mass ratio with 8 parts
Handled for 3 ︰ 2 hydrogen peroxide and acetic acid, obtain treated basalt fiber；
（2）15 parts of vinylsiloxane rubbers are mixed into extrusion with treated basalt fiber and obtain intermediate；
（3）Squeezed after intermediate is well mixed with 60 parts of polyethylene, 0.3 part of VTES with extruder
Go out, obtain cable insulation layer material；
（4）Insulating layer material 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）Containing percetage by weight it is that 0.8% draw ratio is 2 ︰ 1, diameter by 15 parts
Alumina whisker for 5nm and basalt fibre that 1.6% particle diameter is 10nm nano silicons include mass ratio with 8 parts
Handled for 3 ︰ 2 hydrogen peroxide and acetic acid, obtain treated basalt fiber；
（2）0.005 part of graphene uniform is supported on treated basalt fiber；
（3）15 parts of vinylsiloxane rubbers are mixed into extrusion with being loaded with the treated basalt fiber of graphene and obtain intermediate；
（4）Squeezed after intermediate is well mixed with 60 parts of polyethylene, 0.3 part of VTES with extruder
Go out, obtain cable insulation layer material；
（5）Insulating layer material 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）15 parts of vinylsiloxane rubbers are mixed into extrusion with 0.002 part of graphene
Obtain intermediate；
（2）Squeezed after intermediate is well mixed with 60 parts of polyethylene, 0.3 part of VTES with extruder
Go out, obtain cable insulation layer material；
（3）Insulating layer material 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 | ≥78 |
| Embodiment 2 | ≥75 |
| Embodiment 3 | ≥80 |
| Embodiment 4 | ≥76 |
| Comparative example 1 | ≥33 |
| Comparative example 2 | ≥28 |
| Comparative example 3 | ≥24 |
| Comparative example 4 | ≥26 |
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-tension cable, including：An at least conductor thread core, the insulating barrier being paperwrapped in outside the conductor thread core, it is paperwrapped in
Screen layer, cladding outside the insulating barrier are around in the restrictive coating outside the screen layer；Characterized in that, the insulating barrier include with
Lower parts by weight raw material are prepared：The basalt fibre, the graphene of 0.001-0.003 parts of 10-20 parts, the second of 10-20 parts
Alkenyl silicon rubber, the polyethylene of 50-70 parts, the modifying agent of 5-12 parts, the crosslinking agent of 0.1-0.5 parts；Described modifying agent includes
Mass ratio is 2-4 ︰ 1-3 hydrogen peroxide and organic acid.
2. cable according to claim 1, it is characterised in that described organic acid is formic acid, acetic acid, ethanedioic acid, butylene
One or more in diacid, acrylic acid.
3. cable according to claim 1, it is characterised in that include weight percent in described continuous basalt fiber
Number is 0.1-1.5% nano aluminium oxide.
4. cable according to claim 3, it is characterised in that a diameter of 2-10nm of described nano aluminium oxide.
5. according to the cable described in claim any one of 3-4, it is characterised in that described nano aluminium oxide is that draw ratio is
1.5-3 ︰ 1 alumina whisker.
6. cable according to claim 1, it is characterised in that also include weight hundred in described continuous basalt fiber
Fraction is 0.6-2.8% nano silicon.
7. cable according to claim 6, it is characterised in that the percentage by weight of described nano silicon is 1.2-
2.1%。
8. the cable according to claim 6 or 7, it is characterised in that the particle diameter of described nano silicon is 5-20nm.
9. cable according to claim 1, it is characterised in that described crosslinking agent is VTES.
10. cable according to claim 1, it is characterised in that described insulating barrier is prepared by following steps：
（1）Basalt fibre is handled with modifying agent, obtains treated basalt fiber；
（2）By graphene-supported on treated basalt fiber；
（3）Vinylsiloxane rubber is mixed into extrusion with being loaded with the treated basalt fiber of graphene and obtains intermediate；
（4）Extruded after intermediate is well mixed with polyethylene, crosslinking agent with extruder, obtain cable insulation layer material；
（5）Insulating layer material is paperwrapped in outside conductor thread core, forms insulating barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710922645.4A CN107633914A (en) | 2017-09-30 | 2017-09-30 | A kind of high-tension cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710922645.4A CN107633914A (en) | 2017-09-30 | 2017-09-30 | A kind of high-tension cable |
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| CN107633914A true CN107633914A (en) | 2018-01-26 |
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| CN201710922645.4A Withdrawn CN107633914A (en) | 2017-09-30 | 2017-09-30 | A kind of high-tension cable |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105802142A (en) * | 2016-05-06 | 2016-07-27 | 金思宇 | Graphene modified fiber reinforced resin-based composite material and preparation method thereof |
| CN105819710A (en) * | 2015-01-06 | 2016-08-03 | 中国科学院上海硅酸盐研究所 | Graphene/basalt composite material and production method thereof |
| CN106554537A (en) * | 2016-10-17 | 2017-04-05 | 安徽省绿环电气股份有限公司 | A kind of high-voltage crosslinkable polyethylene power cable |
| CN107033428A (en) * | 2016-12-01 | 2017-08-11 | 德阳力久云智知识产权运营有限公司 | A kind of basalt fibre enhancing polyvinyl resin composite and preparation method thereof |
-
2017
- 2017-09-30 CN CN201710922645.4A patent/CN107633914A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105819710A (en) * | 2015-01-06 | 2016-08-03 | 中国科学院上海硅酸盐研究所 | Graphene/basalt composite material and production method thereof |
| CN105802142A (en) * | 2016-05-06 | 2016-07-27 | 金思宇 | Graphene modified fiber reinforced resin-based composite material and preparation method thereof |
| CN106554537A (en) * | 2016-10-17 | 2017-04-05 | 安徽省绿环电气股份有限公司 | A kind of high-voltage crosslinkable polyethylene power cable |
| CN107033428A (en) * | 2016-12-01 | 2017-08-11 | 德阳力久云智知识产权运营有限公司 | A kind of basalt fibre enhancing polyvinyl resin composite and preparation method thereof |
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Application publication date: 20180126 |
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