CN110079006A - Power cable is worn in the compound resistance of one kind - Google Patents
Power cable is worn in the compound resistance of one kind Download PDFInfo
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- CN110079006A CN110079006A CN201910364822.0A CN201910364822A CN110079006A CN 110079006 A CN110079006 A CN 110079006A CN 201910364822 A CN201910364822 A CN 201910364822A CN 110079006 A CN110079006 A CN 110079006A
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- conductor
- metal compound
- power cable
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- lead metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0869—Acids or derivatives thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
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- 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
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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
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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- Oral & Maxillofacial Surgery (AREA)
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- Insulated Conductors (AREA)
Abstract
The present invention relates to a kind of compound resistances to wear power cable; including conductor; there is the first conductor shield on the outside of the conductor; there is insulating layer on the outside of first conductor shield; also there is the second conductor shield, the second conductor shield outer layer covers matcoveredn on the outside of the insulating layer.Compound resistance of the invention wears power cable using double-layer conductor shielding material, the raw material of conductor shielding relatively easily obtains, by the way that nanoscale lead metal compound is added, volume resistivity can be reduced, volume resistivity is lower, the shielding properties of the shielding material of good conductivity, the breakdown characteristics of cable are significantly improved.
Description
Technical field
The present invention relates to a kind of compound resistances to wear power cable.
Background technique
The main reason for cable insulation punctures has mechanical damage, insulation ag(e)ing, humidified insulation, end failure and overvoltage
Deng, can specifically include following aspects: (l) mechanical damage.In cable insulation breakdown accident, mechanical damage proportion
Very big, common reason is as follows: l) directly being damaged by external force, injures cable by a crashing object as weight is fallen down by eminence, cuts the earth accidentally
Accidentally injure cable etc..2) cable bend crosses ambassador and insulate injured when laying, and cable is made to insulate and be protected by severe crush when shipment
Layer damage.3) direct-buried cable bears excessive pressure because of settlement of stratum, causes insulation impaired, cable is even broken when serious.(2)
Insulation ag(e)ing.In the During Process of Long-term Operation of cable, mountain in radiate it is bad keep cable temperature excessively high, so as to cause insulating materials
Electric property and mechanical performance deteriorate, and insulation is caused to become fragile and be broken.(3) humidified insulation.The main original of cable insulation dampness
Because being: 1) since end construction is bad, moisture is invaded inside cable.2) invade moisture since inner sheath of cable is damaged,
Such as the direct mechanical damage of sheath；Lead-covered cable is laid near vibration source, generates fatigue cracking because of Long-term Vibration；Cable sheath
Hole is generated by chemical attack.It is bad due to manufacturing, there are aperture or crack etc. on sheath.(4) end failure.Cable termination
Head and transition joint are the weak links of cable run, and due to constructing, quality of materials that is bad and using is poor, and end occurs
Failure and lead to insulation breakdown.(5) excessively electric) it is long.Cause insulation breakdown since atmosphere electricity excessively is disappointed or internal overvoltage, especially
It is breakdown simultaneously that internal system overvoltage often results in multi-cable.
The measure for preventing cable insulation from puncturing has the following aspects: (1) reinforcing the operation and maintenance of cable run.It should be regular
Walkaround inspection cable run, scent a hidden danger timely exclusion；Cable run should not long-term running overload, and abide by operating standard.
(2) mechanical damage is prevented.Aerial cable, the especially cable along wall laying, should be covered.Engineering of breaking ground in factory should handle by
The dynamic upper card of electrical department signature；Walkaround inspection should be reinforced to factory's outer cable route, prevent the digging near cable run in time
Soil takes native operation.(3) prevent that cable insulation makes moist.Cable sheath, which is corroded, will lead to humidified insulation breakdown, so should reinforce electricity
The maintenance of cable outer jacket will brush one layer of pitch every 2~3 years on protective coverings of cable.(4) the construction matter of end is improved
Amount.Due to bubble and moisture the compressive resistance that end insulate is influenced it is very big, in electricity, the production of cable end, installation process
Middle insulation looping is critical close, there is not allowed that gap.Epoxy resin and silica flour should strictly be carried out at dry processing before.Cable is whole
Field distribution near end is very uneven, and the electric field strength of sheath edge is maximum, should reinforce the insulation at this.(5) it carries
Cable is played carefully, and when cabling should ensure that quality mouth carries cable, extruded cable should be avoided.Cable bend can not mistake when laying
Greatly, in order to avoid damaging built-in electrical insulation.For oil-impregnated paper insulation cable, the difference of height that pay special attention to both ends in an installation be must not exceed
Specified value.
Granted patent CN106960701B discloses a kind of compound resistance and wears power cable, which is characterized in that including conductor,
There is the first conductor shield on the outside of the conductor, there is insulating layer on the outside of first conductor shield, described is exhausted
Also there is the second conductor shield, the second conductor shield outer layer covers matcoveredn, the conductor on the outside of edge layer
For copper conductor, first conductor shield and the second conductor shield are the shielding material of nanoscale lead metal compound
Material.Power cable of the invention has stronger breakdown characteristics.
However, feeding back through marketing users, nanoscale lead metal compound there are problems that reuniting in above-mentioned patent, and hot pressing
Molding effect is not good enough, causes the shield effectiveness of cable still insufficient, breakdown characteristics are still extremely difficult to application circumstances
It is required that failure rate is still very high.
Summary of the invention
As follows in the prior art in order to solve the problems, such as: nanoscale lead metal compound there are problems that reuniting, and be hot pressed into
Type less effective causes the shield effectiveness of cable still insufficient, and breakdown characteristics are still extremely difficult to wanting for application circumstances
It asks, failure rate is still very high.
The invention proposes following technical solutions:
Power cable, including conductor are worn in the compound resistance of one kind, have the first conductor shield on the outside of the conductor, described
The first conductor shield on the outside of there is insulating layer, also there is the second conductor shield on the outside of the insulating layer, described the
Two conductor shield outer layer covers matcoveredns；First conductor shield and the second conductor shield is nanoscale lead
The shielding material of metal composite；
The shielding material of the nanoscale lead metal compound the preparation method is as follows:
Step 1 uses 0.012 part of atoleine to press mass fraction 1:1 dilution titanate coupling agent NDZ-102 first；
Step 2 again impregnates 0.6 part of carbon fiber wherein, and magnetic agitation is stood；
Step 3 carries out ultrasonication, then dries；
Step 4 is added to 4.5 parts of lead by mass fraction 1:1 dilution titanate coupling agent TMC-TTS with 0.09 part of atoleine
In powder, it is stirred；
Step 5 carries out ultrasonic wave decentralized processing, dry；
Step 6 mixes the carbon fiber pipe handled well and lead powder, carries out hot alkali treatment: first handling under 180 DEG C of hot-airs
2h, the sodium hydroxide solution for being then added 5% impregnate 3h, and it is compound to obtain nanoscale lead metal to neutrality for washing after immersion
Object；
Step 7 adds hyper-dispersant into nanoscale lead metal compound, carries out magnetic agitation, receiving after being dispersed
Meter level lead metal compound, wherein the dosage of the hyper-dispersant is the nanoscale lead metal compound of 2wt%；
250 parts of ethylene-acrylic acid second resin copolymers are melt into flow-like by step 8 on a mill, until ethylene-the third
Olefin(e) acid second resin copolymer melts uniform；
Then step 9 is again added the nanoscale lead metal compound after dispersion and melts uniform ethylene-acrylic acid second rouge
Copolymer is kneaded；
Step 10 carries out microwave treatment, and then with 200 DEG C on vulcanizing press, pressure is flat for 30MPa hot pressing squarely
Plate obtains the shielding material of addition nanoscale lead metal compound.
Preferably, the hyper-dispersant presses quality by sodium methylene bis-naphthalene sulfonate and ethylenediamine polyoxyethylene polyethenoxy ether
Than being constituted for 1:1.
Preferably, the conductor is copper conductor.
Preferably, the thickness of first conductor shield is twice of the second conductor shield thickness.
Preferably, the magnetic agitation time is 4~6h in the step 2.
Preferably, ultrasonic treatment time is 2~4h in the step 3, and drying time is 10~14h.
Preferably, the ultrasonic wave decentralized processing time is 2~4h in the step 5, and drying time is 10~14h.
Preferably, mixing time is 2~4h in the step 9.
Preferably, in the step 10 square plate with a thickness of 2.5mm, having a size of 280mm × 280mm.
Technical solution of the present invention has as follows by beneficial effect:
(1) for the nanoscale lead metal compound technical problem easy to reunite for leading to shield effectiveness difference in the prior art, originally
Invention introduces two kinds of dispersing agent collaboration dispersions in nanoscale lead metal compound preparation process, promotes nanoscale lead metal compound
Object is realized evenly dispersed in ethylene-acrylic acid second resin copolymer, thus the characteristics of making full use of this partial size of nanoscale, improves
Shield effectiveness and breakdown characteristics；
(2) for the too low technical problem of briquetting pressure in the prior art, the present invention passes through hot pressing during optimization molding
Pressure discovery, optimal briquetting pressure are 30MPa, improve 10MPa than the prior art.In addition, being found through experiments that, pressure value
It is not the bigger the better, when pressure value reaches 35MPa, excessive hot pressing is bad by the molding effect of material, resists the energy worn
Power is begun to decline.
(3) compound resistance of the invention wears power cable using double-layer conductor shielding material, and the raw material of conductor shielding is opposite
It is easy to obtain, by the way that nanoscale lead metal compound is added, volume resistivity can be reduced, volume resistivity is lower, electric conductivity
The shielding properties of good shielding material, the breakdown characteristics of cable are significantly improved.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments and comparative example,
The present invention will be described in further detail.
Embodiment 1
Power cable, including conductor are worn in the compound resistance of one kind, have the first conductor shield on the outside of the conductor, described
The first conductor shield on the outside of there is insulating layer, also there is the second conductor shield on the outside of the insulating layer, described the
Two conductor shield outer layer covers matcoveredns；First conductor shield and the second conductor shield is nanoscale lead
The shielding material of metal composite；
The shielding material of the nanoscale lead metal compound the preparation method is as follows:
Step 1 uses 0.012 part of atoleine to press mass fraction 1:1 dilution titanate coupling agent NDZ-102 first；
Step 2 again impregnates 0.6 part of carbon fiber wherein, and magnetic agitation is stood；
Step 3 carries out ultrasonication, then dries；
Step 4 is added to 4.5 parts of lead by mass fraction 1:1 dilution titanate coupling agent TMC-TTS with 0.09 part of atoleine
In powder, it is stirred；
Step 5 carries out ultrasonic wave decentralized processing, dry；
Step 6 mixes the carbon fiber pipe handled well and lead powder, carries out hot alkali treatment: first handling under 180 DEG C of hot-airs
2h, the sodium hydroxide solution for being then added 5% impregnate 3h, and it is compound to obtain nanoscale lead metal to neutrality for washing after immersion
Object；
Step 7 adds hyper-dispersant into nanoscale lead metal compound, carries out magnetic agitation, receiving after being dispersed
Meter level lead metal compound, wherein the dosage of the hyper-dispersant is the nanoscale lead metal compound of 2wt%；
250 parts of ethylene-acrylic acid second resin copolymers are melt into flow-like by step 8 on a mill, until ethylene-the third
Olefin(e) acid second resin copolymer melts uniform；
Then step 9 is again added the nanoscale lead metal compound after dispersion and melts uniform ethylene-acrylic acid second rouge
Copolymer is kneaded；
Step 10 carries out microwave treatment, and then with 200 DEG C on vulcanizing press, pressure is flat for 30MPa hot pressing squarely
Plate obtains the shielding material of addition nanoscale lead metal compound.
Wherein, the hyper-dispersant by sodium methylene bis-naphthalene sulfonate and ethylenediamine polyoxyethylene polyethenoxy ether in mass ratio
For 1:1 composition, the conductor is copper conductor, and the thickness of first conductor shield is the second conductor shield thickness
Twice, the magnetic agitation time is 5h in the step 2, and ultrasonic treatment time is 3h, drying time 12h in the step 3,
The ultrasonic wave decentralized processing time is 3h, drying time 12h in the step 5, and mixing time is 3h in the step 9, described
In step 10 square plate with a thickness of 2.5mm, having a size of 280mm × 280mm.
Comparative example 1
Power cable, including conductor are worn in the compound resistance of one kind, have the first conductor shield on the outside of the conductor, described
The first conductor shield on the outside of there is insulating layer, also there is the second conductor shield on the outside of the insulating layer, described the
Two conductor shield outer layer covers matcoveredns；First conductor shield and the second conductor shield is nanoscale lead
The shielding material of metal composite；
The shielding material of the nanoscale lead metal compound the preparation method is as follows:
Step 1 uses 0.012 part of atoleine to press mass fraction 1:1 dilution titanate coupling agent NDZ-102 first；
Step 2 again impregnates 0.6 part of carbon fiber wherein, and magnetic agitation is stood；
Step 3 carries out ultrasonication, then dries；
Step 4 is added to 4.5 parts of lead by mass fraction 1:1 dilution titanate coupling agent TMC-TTS with 0.09 part of atoleine
In powder, it is stirred；
Step 5 carries out ultrasonic wave decentralized processing, dry；
Step 6 mixes the carbon fiber pipe handled well and lead powder, carries out hot alkali treatment: first handling under 180 DEG C of hot-airs
2h, the sodium hydroxide solution for being then added 5% impregnate 3h, and it is compound to obtain nanoscale lead metal to neutrality for washing after immersion
Object；
Step 7 adds hyper-dispersant into nanoscale lead metal compound, carries out magnetic agitation, receiving after being dispersed
Meter level lead metal compound, wherein the dosage of the hyper-dispersant is the nanoscale lead metal compound of 2wt%；
250 parts of ethylene-acrylic acid second resin copolymers are melt into flow-like by step 8 on a mill, until ethylene-the third
Olefin(e) acid second resin copolymer melts uniform；
Then step 9 is again added the nanoscale lead metal compound after dispersion and melts uniform ethylene-acrylic acid second rouge
Copolymer is kneaded；
Step 10 carries out microwave treatment, and then with 200 DEG C on vulcanizing press, pressure is flat for 30MPa hot pressing squarely
Plate obtains the shielding material of addition nanoscale lead metal compound.
Wherein, the hyper-dispersant is only made of sodium methylene bis-naphthalene sulfonate, and the conductor is copper conductor, and described the
The thickness of one conductor shield is twice of the second conductor shield thickness, and the magnetic agitation time is 5h in the step 2, described
Ultrasonic treatment time is 3h, drying time 12h in step 3, and the ultrasonic wave decentralized processing time is 3h in the step 5, is done
The dry time is 12h, and mixing time is 3h in the step 9, in the step 10 square plate with a thickness of 2.5mm, having a size of
280mm×280mm。
Comparative example 2
Power cable, including conductor are worn in the compound resistance of one kind, have the first conductor shield on the outside of the conductor, described
The first conductor shield on the outside of there is insulating layer, also there is the second conductor shield on the outside of the insulating layer, described the
Two conductor shield outer layer covers matcoveredns；First conductor shield and the second conductor shield is nanoscale lead
The shielding material of metal composite；
The shielding material of the nanoscale lead metal compound the preparation method is as follows:
Step 1 uses 0.012 part of atoleine to press mass fraction 1:1 dilution titanate coupling agent NDZ-102 first；
Step 2 again impregnates 0.6 part of carbon fiber wherein, and magnetic agitation is stood；
Step 3 carries out ultrasonication, then dries；
Step 4 is added to 4.5 parts of lead by mass fraction 1:1 dilution titanate coupling agent TMC-TTS with 0.09 part of atoleine
In powder, it is stirred；
Step 5 carries out ultrasonic wave decentralized processing, dry；
Step 6 mixes the carbon fiber pipe handled well and lead powder, carries out hot alkali treatment: first handling under 180 DEG C of hot-airs
2h, the sodium hydroxide solution for being then added 5% impregnate 3h, and it is compound to obtain nanoscale lead metal to neutrality for washing after immersion
Object；
Step 7 adds hyper-dispersant into nanoscale lead metal compound, carries out magnetic agitation, receiving after being dispersed
Meter level lead metal compound, wherein the dosage of the hyper-dispersant is the nanoscale lead metal compound of 2wt%；
250 parts of ethylene-acrylic acid second resin copolymers are melt into flow-like by step 8 on a mill, until ethylene-the third
Olefin(e) acid second resin copolymer melts uniform；
Then step 9 is again added the nanoscale lead metal compound after dispersion and melts uniform ethylene-acrylic acid second rouge
Copolymer is kneaded；
Step 10 carries out microwave treatment, and then with 200 DEG C on vulcanizing press, pressure is flat for 30MPa hot pressing squarely
Plate obtains the shielding material of addition nanoscale lead metal compound.
Wherein, the hyper-dispersant is only made of ethylenediamine polyoxyethylene polyethenoxy ether, and the conductor is copper conductor,
The thickness of first conductor shield is twice of the second conductor shield thickness, magnetic agitation time in the step 2
For 5h, ultrasonic treatment time is 3h in the step 3, drying time 12h, in the step 5 when ultrasonic wave decentralized processing
Between be 3h, drying time 12h, mixing time is 3h in the step 9, in the step 10 square plate with a thickness of
2.5mm, having a size of 280mm × 280mm.
Comparative example 3
Power cable, including conductor are worn in the compound resistance of one kind, have the first conductor shield on the outside of the conductor, described
The first conductor shield on the outside of there is insulating layer, also there is the second conductor shield on the outside of the insulating layer, described the
Two conductor shield outer layer covers matcoveredns；First conductor shield and the second conductor shield is nanoscale lead
The shielding material of metal composite；
The shielding material of the nanoscale lead metal compound the preparation method is as follows:
Step 1 uses 0.012 part of atoleine to press mass fraction 1:1 dilution titanate coupling agent NDZ-102 first；
Step 2 again impregnates 0.6 part of carbon fiber wherein, and magnetic agitation is stood；
Step 3 carries out ultrasonication, then dries；
Step 4 is added to 4.5 parts of lead by mass fraction 1:1 dilution titanate coupling agent TMC-TTS with 0.09 part of atoleine
In powder, it is stirred；
Step 5 carries out ultrasonic wave decentralized processing, dry；
Step 6 mixes the carbon fiber pipe handled well and lead powder, carries out hot alkali treatment: first handling under 180 DEG C of hot-airs
2h, the sodium hydroxide solution for being then added 5% impregnate 3h, and it is compound to obtain nanoscale lead metal to neutrality for washing after immersion
Object；
Step 7 adds hyper-dispersant into nanoscale lead metal compound, carries out magnetic agitation, receiving after being dispersed
Meter level lead metal compound, wherein the dosage of the hyper-dispersant is the nanoscale lead metal compound of 2wt%；
250 parts of ethylene-acrylic acid second resin copolymers are melt into flow-like by step 8 on a mill, until ethylene-the third
Olefin(e) acid second resin copolymer melts uniform；
Then step 9 is again added the nanoscale lead metal compound after dispersion and melts uniform ethylene-acrylic acid second rouge
Copolymer is kneaded；
Step 10 carries out microwave treatment, and then with 200 DEG C on vulcanizing press, pressure is flat for 20MPa hot pressing squarely
Plate obtains the shielding material of addition nanoscale lead metal compound.
Wherein, the hyper-dispersant by sodium methylene bis-naphthalene sulfonate and ethylenediamine polyoxyethylene polyethenoxy ether in mass ratio
For 1:1 composition, the conductor is copper conductor, and the thickness of first conductor shield is the second conductor shield thickness
Twice, the magnetic agitation time is 5h in the step 2, and ultrasonic treatment time is 3h, drying time 12h in the step 3,
The ultrasonic wave decentralized processing time is 3h, drying time 12h in the step 5, and mixing time is 3h in the step 9, described
In step 10 square plate with a thickness of 2.5mm, having a size of 280mm × 280mm.
Comparative example 4
Power cable, including conductor are worn in the compound resistance of one kind, have the first conductor shield on the outside of the conductor, described
The first conductor shield on the outside of there is insulating layer, also there is the second conductor shield on the outside of the insulating layer, described the
Two conductor shield outer layer covers matcoveredns；First conductor shield and the second conductor shield is nanoscale lead
The shielding material of metal composite；
The shielding material of the nanoscale lead metal compound the preparation method is as follows:
Step 1 uses 0.012 part of atoleine to press mass fraction 1:1 dilution titanate coupling agent NDZ-102 first；
Step 2 again impregnates 0.6 part of carbon fiber wherein, and magnetic agitation is stood；
Step 3 carries out ultrasonication, then dries；
Step 4 is added to 4.5 parts of lead by mass fraction 1:1 dilution titanate coupling agent TMC-TTS with 0.09 part of atoleine
In powder, it is stirred；
Step 5 carries out ultrasonic wave decentralized processing, dry；
Step 6 mixes the carbon fiber pipe handled well and lead powder, carries out hot alkali treatment: first handling under 180 DEG C of hot-airs
2h, the sodium hydroxide solution for being then added 5% impregnate 3h, and it is compound to obtain nanoscale lead metal to neutrality for washing after immersion
Object；
Step 7 adds hyper-dispersant into nanoscale lead metal compound, carries out magnetic agitation, receiving after being dispersed
Meter level lead metal compound, wherein the dosage of the hyper-dispersant is the nanoscale lead metal compound of 2wt%；
250 parts of ethylene-acrylic acid second resin copolymers are melt into flow-like by step 8 on a mill, until ethylene-the third
Olefin(e) acid second resin copolymer melts uniform；
Then step 9 is again added the nanoscale lead metal compound after dispersion and melts uniform ethylene-acrylic acid second rouge
Copolymer is kneaded；
Step 10 carries out microwave treatment, and then with 200 DEG C on vulcanizing press, pressure is flat for 25MPa hot pressing squarely
Plate obtains the shielding material of addition nanoscale lead metal compound.
Wherein, the hyper-dispersant by sodium methylene bis-naphthalene sulfonate and ethylenediamine polyoxyethylene polyethenoxy ether in mass ratio
For 1:1 composition, the conductor is copper conductor, and the thickness of first conductor shield is the second conductor shield thickness
Twice, the magnetic agitation time is 5h in the step 2, and ultrasonic treatment time is 3h, drying time 12h in the step 3,
The ultrasonic wave decentralized processing time is 3h, drying time 12h in the step 5, and mixing time is 3h in the step 9, described
In step 10 square plate with a thickness of 2.5mm, having a size of 280mm × 280mm.
Comparative example 5
Power cable, including conductor are worn in the compound resistance of one kind, have the first conductor shield on the outside of the conductor, described
The first conductor shield on the outside of there is insulating layer, also there is the second conductor shield on the outside of the insulating layer, described the
Two conductor shield outer layer covers matcoveredns；First conductor shield and the second conductor shield is nanoscale lead
The shielding material of metal composite；
The shielding material of the nanoscale lead metal compound the preparation method is as follows:
Step 1 uses 0.012 part of atoleine to press mass fraction 1:1 dilution titanate coupling agent NDZ-102 first；
Step 2 again impregnates 0.6 part of carbon fiber wherein, and magnetic agitation is stood；
Step 3 carries out ultrasonication, then dries；
Step 4 is added to 4.5 parts of lead by mass fraction 1:1 dilution titanate coupling agent TMC-TTS with 0.09 part of atoleine
In powder, it is stirred；
Step 5 carries out ultrasonic wave decentralized processing, dry；
Step 6 mixes the carbon fiber pipe handled well and lead powder, carries out hot alkali treatment: first handling under 180 DEG C of hot-airs
2h, the sodium hydroxide solution for being then added 5% impregnate 3h, and it is compound to obtain nanoscale lead metal to neutrality for washing after immersion
Object；
Step 7 adds hyper-dispersant into nanoscale lead metal compound, carries out magnetic agitation, receiving after being dispersed
Meter level lead metal compound, wherein the dosage of the hyper-dispersant is the nanoscale lead metal compound of 2wt%；
250 parts of ethylene-acrylic acid second resin copolymers are melt into flow-like by step 8 on a mill, until ethylene-the third
Olefin(e) acid second resin copolymer melts uniform；
Then step 9 is again added the nanoscale lead metal compound after dispersion and melts uniform ethylene-acrylic acid second rouge
Copolymer is kneaded；
Step 10 carries out microwave treatment, and then with 200 DEG C on vulcanizing press, pressure is flat for 35MPa hot pressing squarely
Plate obtains the shielding material of addition nanoscale lead metal compound.
Wherein, the hyper-dispersant by sodium methylene bis-naphthalene sulfonate and ethylenediamine polyoxyethylene polyethenoxy ether in mass ratio
For 1:1 composition, the conductor is copper conductor, and the thickness of first conductor shield is the second conductor shield thickness
Twice, the magnetic agitation time is 5h in the step 2, and ultrasonic treatment time is 3h, drying time 12h in the step 3,
The ultrasonic wave decentralized processing time is 3h, drying time 12h in the step 5, and mixing time is 3h in the step 9, described
In step 10 square plate with a thickness of 2.5mm, having a size of 280mm × 280mm.
Following table describes embodiment 1 and the dispersing agent composition and hot press molding pressure of comparative example 1-5 in detail.
Effect is worn in order to verify the resistance of embodiment 1 and comparative example 1-5, the sample of embodiment 1 and comparative example 1-5 are carried out
Breakdown test detects power frequency step by step, carries out power frequency breakdown test step by step, power frequency after carrying out 30d duty cycle to these power cables
Breakdown test result E step by stepb/(kv·mm-1) it is as follows:
The above results show that (1) causes shield effectiveness poor for nanoscale lead metal compound is easy to reunite in the prior art
The technical issues of, the present invention introduces two kinds of dispersing agent collaboration dispersions in nanoscale lead metal compound preparation process, promotes to receive
Meter level lead metal compound realized in ethylene-acrylic acid second resin copolymer it is evenly dispersed, thus make full use of nanoscale this
The characteristics of partial size, improves shield effectiveness and breakdown characteristics；(2) it is directed to the too low technical problem of briquetting pressure in the prior art,
The present invention has found that optimal briquetting pressure is 30MPa by hot pressing pressure during optimization molding, improves than the prior art
10MPa.In addition, being found through experiments that, pressure value is not the bigger the better, and when pressure value reaches 35MPa, excessive hot pressing will
The molding effect of material is bad, resists the ability worn and begins to decline.
Claims (9)
1. power cable is worn in a kind of compound resistance, which is characterized in that including conductor, there is the first conductor screen on the outside of the conductor
Layer is covered, there is insulating layer on the outside of first conductor shield, also there is the second conductor shield on the outside of the insulating layer,
The second conductor shield outer layer covers matcoveredn；
First conductor shield and the second conductor shield is the shielding material of nanoscale lead metal compound；
The shielding material of the nanoscale lead metal compound the preparation method is as follows:
Step 1 uses 0.012 part of atoleine to press mass fraction 1:1 dilution titanate coupling agent NDZ-102 first；
Step 2 again impregnates 0.6 part of carbon fiber wherein, and magnetic agitation is stood；
Step 3 carries out ultrasonication, then dries；
Step 4 is added to 4.5 parts of lead powder by mass fraction 1:1 dilution titanate coupling agent TMC-TTS with 0.09 part of atoleine
In, it is stirred；
Step 5 carries out ultrasonic wave decentralized processing, dry；
Step 6 mixes the carbon fiber pipe handled well and lead powder, carries out hot alkali treatment: first handling 2h under 180 DEG C of hot-airs,
Then the sodium hydroxide solution for being added 5% impregnates 3h, and washing obtains nanoscale lead metal compound to neutrality after immersion；
Step 7 adds hyper-dispersant into nanoscale lead metal compound, carries out magnetic agitation, the nanoscale after being dispersed
Lead metal compound, wherein the dosage of the hyper-dispersant is the nanoscale lead metal compound of 2wt%；
250 parts of ethylene-acrylic acid second resin copolymers are melt into flow-like by step 8 on a mill, until ethylene-acrylic acid
Second resin copolymer melts uniform；
Then step 9 is again added the nanoscale lead metal compound after dispersion and melts uniform ethylene-acrylic acid second rouge copolymerization
Object is kneaded；
Step 10 carries out microwave treatment, and then with 200 DEG C on vulcanizing press, pressure is that 30MPa is hot pressed into square plate,
Obtain the shielding material of addition nanoscale lead metal compound.
2. power cable is worn in compound resistance according to claim 1, which is characterized in that the hyper-dispersant is by di-2-ethylhexylphosphine oxide
Sodium naphthalene sulfonate and ethylenediamine polyoxyethylene polyethenoxy ether are that 1:1 is constituted in mass ratio.
3. power cable is worn in compound resistance according to claim 1, which is characterized in that the conductor is copper conductor.
4. power cable is worn in compound resistance according to claim 1, which is characterized in that the first conductor shielding thickness
Degree is twice of the second conductor shield thickness.
5. power cable is worn in compound resistance according to claim 1, which is characterized in that in the step 2 when magnetic agitation
Between be 4~6h.
6. power cable is worn in compound resistance according to claim 1, which is characterized in that ultrasonication in the step 3
Time is 2~4h, and drying time is 10~14h.
7. power cable is worn in compound resistance according to claim 1, which is characterized in that ultrasonic wave disperses in the step 5
The processing time is 2~4h, and drying time is 10~14h.
8. power cable is worn in compound resistance according to claim 1, which is characterized in that mixing time is 2 in the step 9
~4h.
9. power cable is worn in compound resistance according to claim 1, which is characterized in that square plate in the step 10
With a thickness of 2.5mm, having a size of 280mm × 280mm.
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| CN201910364822.0A CN110079006B (en) | 2019-04-30 | 2019-04-30 | Composite breakdown-resistant power cable |
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| CN201910364822.0A CN110079006B (en) | 2019-04-30 | 2019-04-30 | Composite breakdown-resistant power cable |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104966581A (en) * | 2015-06-09 | 2015-10-07 | 无锡市曙光电缆有限公司 | Lead sheath copper wire shielding composite high-voltage power cable |
| CN105001497A (en) * | 2015-08-06 | 2015-10-28 | 安徽电信器材贸易工业有限责任公司 | High-performance optical fiber protecting jacket material |
| JP2016092381A (en) * | 2014-11-11 | 2016-05-23 | 株式会社フジクラ | Resin composition for shielding electromagnetic waves and cable |
| CN106960701A (en) * | 2017-04-10 | 2017-07-18 | 徐州乐泰机电科技有限公司 | One kind is compound resistance to puncture power cable |
-
2019
- 2019-04-30 CN CN201910364822.0A patent/CN110079006B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016092381A (en) * | 2014-11-11 | 2016-05-23 | 株式会社フジクラ | Resin composition for shielding electromagnetic waves and cable |
| CN104966581A (en) * | 2015-06-09 | 2015-10-07 | 无锡市曙光电缆有限公司 | Lead sheath copper wire shielding composite high-voltage power cable |
| CN105001497A (en) * | 2015-08-06 | 2015-10-28 | 安徽电信器材贸易工业有限责任公司 | High-performance optical fiber protecting jacket material |
| CN106960701A (en) * | 2017-04-10 | 2017-07-18 | 徐州乐泰机电科技有限公司 | One kind is compound resistance to puncture power cable |
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