CN108047535A - A kind of high-tension cable conductive shield material and preparation method thereof - Google Patents
A kind of high-tension cable conductive shield material and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
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- 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
- C08L23/06—Polyethene
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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Abstract
A kind of high-tension cable conductive shield material, raw material composition and parts by weight are：Ldpe resin 80-100, graphene/titanium dioxide nano-particle compound 3-5, coupling agent 0.5-1, antioxidant 0.3-0.5, crosslinking agent 1.5-2, lubricant 1-2, filler 2-3, during preparation, graphite oxide, nano-titanium dioxide, talcum powder are first pressed into 60-80:20-30:It obtains in required ratio mixing graphite oxide, nano-titanium dioxide, talcum powder fully using electron accelerator irradiation after the weight ratio mixing of 3-5; obtain premix; premix using electron accelerator is irradiated again, then melting extrusion in two steps type extruding granulator, air-cooled pelletizing are discharged into after ldpe resin, graphene/titanium dioxide nano-particle compound and other raw materials are mixed.The design not only has good caking property and electric conductivity, but also with splendid expressing technique performance.
Description
Technical field
The present invention relates to high-tension cable, conductive plastics fields, and in particular to a kind of high-tension cable with conductive shield material and its
Preparation method.
Background technology
Power cable is a staple product in electric wire manufacturing industry, by voltage class point：1-10kV belongs to low pressure
Cable, 10-35kV belong to Central Asia cable, 110-220kV is high-tension cable.For the shielding material of high-tension cable, it is required that with
It is merged, can not be removed completely after crosslinked polyetylene insulated coextrusion, and electric conductivity will be got well, and have splendid mobility
Can, expression surface is smooth, uniform, no incipient scorch particle.The material of high-tension cable shielding currently on the market base-material used mostly using ethylene-
Acetate ethylene copolymer（EVA）, then add substantial amounts of conductive black and be prepared as conducting medium.The formula has following
Defect：
First, it can be caused using EVA peelable with crosslinked polyethylene, can not be merged completely, shielding material is made to become non-stick
Knot property material, this will generate harmful effect to the longtime running of high-tension cable.
Secondth, it must assure that its additive amount can just meet the requirements electric conductivity more than 30% using conductive black.It is and big
The addition of amount conductive black will be greatly reduced the mobility of product, and material is hardened, and expressing technique performance is very poor, can not squeeze
Go out, and be also easy to produce scorch particle.
The 3rd, though its electric conductivity meets standard requirement（Standard requirement is less than 100 ohm meters）, but its numerical value is inclined
Greatly.
The content of the invention
The purpose of the present invention is overcome no adhesion existing for current material, expressing technique poor performance, electric conductivity bigger than normal
The problem of, a kind of high-tension cable conducting screen of caking property and electric conductivity well, with splendid expressing technique performance is provided
Cover material and preparation method thereof.
In order to achieve the above object, the present invention provides following technical schemes：
A kind of high-tension cable conductive shield material, raw material composition and parts by weight are：Ldpe resin LDPE 80-
100th, graphene/titanium dioxide nano-particle compound 3-5, coupling agent 0.5-1, antioxidant 0.3-0.5, crosslinking agent 1.5-
2nd, lubricant 1-2, filler 2-3, wherein, the raw material of the graphene/titanium dioxide nano-particle compound composition and its
Parts by weight are：Graphite oxide 60-80, nano-titanium dioxide 20-30, talcum powder 3-5.
The coupling agent is titanate coupling agent, and the antioxidant is antioxidant 1010, and the crosslinking agent is peroxidating two
Isopropylbenzene, the lubricant are polyethylene wax, and the filler is talcum powder.
A kind of high-tension cable preparation method of conductive shield material, comprises the following steps successively：
The preparation of graphene/titanium dioxide nano-particle compound：Graphite oxide, nano-titanium dioxide, talcum powder are first pressed into institute
It needs ratio mixing abundant, obtains premix, then premix using electron accelerator irradiate up to graphene/titanium dioxide
Nano-particle compound；
The preparation of polyethylene/graphene compound：It is first that ldpe resin, graphene/titanium dioxide nano-particle is multiple
It closes object, coupling agent, antioxidant, crosslinking agent, lubricant and filler to mix fully in required ratio, obtains mixed material, then will
Mixed material is discharged into two steps type extruding pelletization unit, and the air-cooled pelletizing after melting extrusion obtains polyethylene/graphene compound
Composition granule is blended, which is the shielding material.
In the preparation process of graphene/titanium dioxide nano-particle compound, the mixing temperature be room temperature, incorporation time
For 8-10min, the dosage of the irradiation is 15-25 Mrad；
In the preparation process of polyethylene/graphene compound, the mixing temperature is room temperature, and incorporation time 6-8min is described
The operating temperature of two steps type extruding granulator is：One 90 ± 5 DEG C of area, 100 ± 5 DEG C of 2nd area, 110 ± 5 DEG C of 3rd area, four areas 115 ± 5
DEG C, 110 ± 5 DEG C of 5th area, 110 ± 5 DEG C of head.
The preparation method further includes the preparation process of graphite oxide, which is located at graphene/titanium dioxide nano granule
Before the preparation process of sub- compound；
The preparation of the graphite oxide is specially：
The concentrated sulfuric acid that mass percentage content is 98% is first cooled to 0-4 DEG C, day is then sequentially added during stirring
Right crystalline flake graphite, sodium nitrate, potassium permanganate powder, then at 10-15 DEG C be stirred to react 1-2h successively, stirred at 32-40 DEG C
Reaction 0.5-1h is mixed, then adds in first part of deionized water, and 0.5-1h is stirred to react at 95-105 DEG C, is subsequently added into
Second part of deionized water releases dilute reaction solution, adds the hydrogen peroxide that mass percentage content is 5% and filters while hot, obtained filter cake
Multiple centrifuge washing is carried out with the hydrochloric acid solution and deionized water that mass percentage content is 5%, is finally dried at 40-50 DEG C
, wherein, the concentrated sulfuric acid, natural flake graphite, sodium nitrate, potassium permanganate powder, first part of deionized water, second part go
Ionized water, the weight part ratio of hydrogen peroxide are 20:2:1:6:18-19:1.
Compared with prior art, beneficial effects of the present invention are：
1st, a kind of high-tension cable of the present invention is with the raw material composition and its parts by weight of conductive shield material：Resin low density polyethylene (LDPE)
Resin LDPE 80-100, graphene/titanium dioxide nano-particle compound 3-5, coupling agent 0.5-1, antioxidant 0.3-
0.5th, crosslinking agent 1.5-2, lubricant 1-2, filler 2-3, and the raw material of graphene/titanium dioxide nano-particle compound
Composition and its parts by weight are：Graphite oxide 60-80, nano-titanium dioxide 20-30, talcum powder 3-5, the design is using poly-
Vinyl is as base-material, and as conducting medium, the product being prepared can not only completely bond graphene with crosslinked polyethylene
Together, and possess high mobility and splendid expressing technique performance, meanwhile, electric conductivity can reach 5 ohm
Below centimetre, the manufacture of extrusion and other conductive plastics available for high-tension cable shielding material.Therefore, the present invention not only
With good caking property and electric conductivity, and with splendid expressing technique performance.
2nd, a kind of high-tension cable of the present invention has selected graphene/titanium dioxide nano-particle compound with conductive shield material,
And not single graphene, and the compound is abundant using first graphite oxide, nano-titanium dioxide, talcum powder is mixed, then
The preparation method irradiated using electron accelerator since graphene is single layer structure, is easily reunited together, by itself and two
Titanium oxide, talcum powder mixing, on the one hand, graphene oxide can be dispersed in after by e-beam reduction in the more of titanium dioxide
In pore structure, i.e. carrier of the titanium dioxide as graphene, on the other hand, titanium dioxide, talcum powder can play it is scattered, every
From effect, so as to ensure that graphene can be uniformly dispersed in polyvinyl resin, effectively prevent the reunion of graphene.Cause
This, the present invention can make being dispersed in polyvinyl resin of graphene uniform, prevent graphene from reuniting.
Specific embodiment
The invention will be further described With reference to embodiment.
A kind of high-tension cable conductive shield material, raw material composition and parts by weight are：Ldpe resin LDPE
80-100, graphene/titanium dioxide nano-particle compound 3-5, coupling agent 0.5-1, antioxidant 0.3-0.5, crosslinking agent
1.5-2, lubricant 1-2, filler 2-3, wherein, the raw material composition of the graphene/titanium dioxide nano-particle compound
And its parts by weight are：Graphite oxide 60-80, nano-titanium dioxide 20-30, talcum powder 3-5.
The coupling agent is titanate coupling agent, and the antioxidant is antioxidant 1010, and the crosslinking agent is peroxidating two
Isopropylbenzene, the lubricant are polyethylene wax, and the filler is talcum powder.
A kind of high-tension cable preparation method of conductive shield material, comprises the following steps successively：
The preparation of graphene/titanium dioxide nano-particle compound：Graphite oxide, nano-titanium dioxide, talcum powder are first pressed into institute
It needs ratio mixing abundant, obtains premix, then premix using electron accelerator irradiate up to graphene/titanium dioxide
Nano-particle compound；
The preparation of polyethylene/graphene compound：It is first that ldpe resin, graphene/titanium dioxide nano-particle is multiple
It closes object, coupling agent, antioxidant, crosslinking agent, lubricant and filler to mix fully in required ratio, obtains mixed material, then will
Mixed material is discharged into two steps type extruding pelletization unit, and the air-cooled pelletizing after melting extrusion obtains polyethylene/graphene compound
Composition granule is blended, which is the shielding material.
In the preparation process of graphene/titanium dioxide nano-particle compound, the mixing temperature be room temperature, incorporation time
For 8-10min, the dosage of the irradiation is 15-25 Mrad；
In the preparation process of polyethylene/graphene compound, the mixing temperature is room temperature, and incorporation time 6-8min is described
The operating temperature of two steps type extruding granulator is：One 90 ± 5 DEG C of area, 100 ± 5 DEG C of 2nd area, 110 ± 5 DEG C of 3rd area, four areas 115 ± 5
DEG C, 110 ± 5 DEG C of 5th area, 110 ± 5 DEG C of head.
The preparation method further includes the preparation process of graphite oxide, which is located at graphene/titanium dioxide nano granule
Before the preparation process of sub- compound；
The preparation of the graphite oxide is specially：
The concentrated sulfuric acid that mass percentage content is 98% is first cooled to 0-4 DEG C, day is then sequentially added during stirring
Right crystalline flake graphite, sodium nitrate, potassium permanganate powder, then at 10-15 DEG C be stirred to react 1-2h successively, stirred at 32-40 DEG C
Reaction 0.5-1h is mixed, then adds in first part of deionized water, and 0.5-1h is stirred to react at 95-105 DEG C, is subsequently added into
Second part of deionized water releases dilute reaction solution, adds the hydrogen peroxide that mass percentage content is 5% and filters while hot, obtained filter cake
Multiple centrifuge washing is carried out with the hydrochloric acid solution and deionized water that mass percentage content is 5%, is finally dried at 40-50 DEG C
, wherein, the concentrated sulfuric acid, natural flake graphite, sodium nitrate, potassium permanganate powder, first part of deionized water, second part go
Ionized water, the weight part ratio of hydrogen peroxide are 20:2:1:6:18-19:1.
The principle of the present invention is described as follows：
Present invention employs the method for electron accelerator irradiation redox graphene, the method is not only simple and practicable, it is easy to operate,
It is of low cost, and the graphene being prepared successfully is dispersed in polyvinyl resin, solve graphene easily
Reunite, be not easy to be dispersed in problem in resin.
Each raw material of the present invention is described as follows：
Low density polyethylene (LDPE)：Model DJ210, melt index 2.0g/10min, oil of SPC production；
Natural flake graphite：It is commercially available；
Nano-titanium dioxide：White solid powder shape, interleaving agent, carrier；
Titanate coupling agent：Translucent yellow thick liquid, it is commercially available；
Cumyl peroxide DCP：White crystals, it is commercially available；
Polyethylene wax：Lubricant, wax-like particle are commercially available；
Talcum powder：White powder, filler, dispersant, interleaving agent, 3500 mesh are commercially available；
Antioxidant 1010：White powder, thermo oxidative aging are commercially available；
Embodiment 1：
A kind of high-tension cable conductive shield material, raw material composition and parts by weight are：Ldpe resin LDPE 80,
Graphene/titanium dioxide nano-particle compound 3, titanate coupling agent 0.5, antioxidant 1010 0.3, cumyl peroxide
1.5th, polyethylene wax 1, talcum powder 2, wherein, the raw material of the graphene/titanium dioxide nano-particle compound composition and its again
Measuring number is：Graphite oxide 60, nano-titanium dioxide 20, talcum powder 3.
The preparation method of above-mentioned shielding material follows the steps below successively：
The preparation of graphite oxide：The concentrated sulfuric acid that mass percentage content is 98% is first cooled to 2 DEG C, then in the process of stirring
In sequentially add natural flake graphite, sodium nitrate, potassium permanganate powder, then be stirred to react at 10 DEG C 1.5h successively, in 35 DEG C
Under be stirred to react 0.5h, then add in first part of deionized water, and be stirred to react 0.5h at 100 DEG C, be subsequently added into second part
Deionized water releases dilute reaction solution, adds the hydrogen peroxide that mass percentage content is 5% and filters while hot, obtained filter cake quality
The hydrochloric acid solution and deionized water that degree is 5% carry out multiple centrifuge washing, are finally dried at 50 DEG C, wherein,
It is the concentrated sulfuric acid, natural flake graphite, sodium nitrate, potassium permanganate powder, first part of deionized water, second part of deionized water, double
The weight part ratio of oxygen water is 20:2:1:6:18.4:1；
The preparation of graphene/titanium dioxide nano-particle compound：Graphite oxide, nano-titanium dioxide, talcum powder are first pressed into institute
Ratio mixed at high speed 10min under room temperature is needed, premix is obtained, then premix using electron accelerator irradiate up to stone
Black alkene/titanium dioxide nano-particle compound, wherein, the dosage of the irradiation is 20Mrad；
The preparation of polyethylene/graphene compound：It is first that ldpe resin, graphene/titanium dioxide nano-particle is multiple
Conjunction object, coupling agent, antioxidant, crosslinking agent, lubricant and filler the mixed at high speed 8min under room temperature in required ratio, are mixed
Close material, then mixed material be discharged into two steps type extruding pelletization unit, the air-cooled pelletizing after melting extrusion, obtain polyethylene/
Composition granule is blended in graphene complex, which is the shielding material, wherein, the two steps type extruding granulator
Operating temperature is：One 90 ± 5 DEG C of area, 100 ± 5 DEG C of 2nd area, 110 ± 5 DEG C of 3rd area, 115 ± 5 DEG C of 4th area, 110 ± 5 DEG C of 5th area, machine
First 110 ± 5 DEG C.
Embodiment 2：
With embodiment 1 the difference is that：
The raw material of the conductive shield material forms and parts by weight are：Ldpe resin LDPE 100, graphene/dioxy
Change titanium nano-particle compound 5, titanate coupling agent 1, antioxidant 1010 0.5, cumyl peroxide 2, polyethylene wax 2, cunning
Mountain flour 3, the raw material composition and its parts by weight of the graphene/titanium dioxide nano-particle compound are：Graphite oxide 80 is received
Rice titanium dioxide 30, talcum powder 5.
In the preparation process of the graphene/titanium dioxide nano-particle compound, the dosage of irradiation is 25Mrad.
Embodiment 3：
With embodiment 1 the difference is that：
The raw material of the conductive shield material forms and parts by weight are：Ldpe resin LDPE 90, graphene/dioxy
Change titanium nano-particle compound 4, titanate coupling agent 0.8, antioxidant 1010 0.4, cumyl peroxide 1.8, polyethylene wax
1.5th, talcum powder 2.5, the raw material composition and its parts by weight of the graphene/titanium dioxide nano-particle compound are：Oxidation
Graphite 70, nano-titanium dioxide 25, talcum powder 4.
In the preparation process of the graphene/titanium dioxide nano-particle compound, the dosage of irradiation is 15Mrad；
Relevant performance test now is carried out to shielding material of the present invention, it is as a result as follows：
Tensile strength >=12MPa；
Elongation at break >=200%；
The ohmcm of 20 DEG C of volume resistivities≤5；
The ohmcm of 90 DEG C of volume resistivities≤50；
Peel strength（N/cm）：It is not peelable；
Air thermal ageing test（135 ± 2 DEG C, 168h）：Variation in tensile strength ± 30%, elongation at break change rate ± 30%；
Heat extension experiment（200 ± 2 DEG C, 0.2Mpa, under 15min loads）：Elongation≤70%, permanent deformation≤10%；
Volume resistivity after air heat ageing（100 ± 2 DEG C, 168h）≤ 100 ohmcms.
Claims (5)
1. a kind of high-tension cable conductive shield material, it is characterised in that：
The raw material of the shielding material forms and its parts by weight are：Ldpe resin LDPE 80-100, graphene/bis-
Titanium oxide nanoparticles compound 3-5, coupling agent 0.5-1, antioxidant 0.3-0.5, crosslinking agent 1.5-2, lubricant 1-2,
Filler 2-3, wherein, the raw material composition and its parts by weight of the graphene/titanium dioxide nano-particle compound are：Oxygen
Graphite 60-80, nano-titanium dioxide 20-30, talcum powder 3-5.
2. a kind of high-tension cable conductive shield material according to claim 1, it is characterised in that：The coupling agent is metatitanic acid
Ester coupling agent, the antioxidant are antioxidant 1010, and the crosslinking agent is cumyl peroxide, and the lubricant is polyethylene
Wax, the filler are talcum powder.
3. a kind of preparation method of high-tension cable described in claim 1 conductive shield material, it is characterised in that：
The preparation method comprises the following steps successively：
The preparation of graphene/titanium dioxide nano-particle compound：Graphite oxide, nano-titanium dioxide, talcum powder are first pressed into institute
It needs ratio mixing abundant, obtains premix, then premix using electron accelerator irradiate up to graphene/titanium dioxide
Nano-particle compound；
The preparation of polyethylene/graphene compound：It is first that ldpe resin, graphene/titanium dioxide nano-particle is multiple
It closes object, coupling agent, antioxidant, crosslinking agent, lubricant and filler to mix fully in required ratio, obtains mixed material, then will
Mixed material is discharged into two steps type extruding pelletization unit, and the air-cooled pelletizing after melting extrusion obtains polyethylene/graphene compound
Composition granule is blended, which is the shielding material.
4. a kind of preparation method of high-tension cable conductive shield material according to claim 3, it is characterised in that：
In the preparation process of graphene/titanium dioxide nano-particle compound, the mixing temperature is room temperature, and incorporation time is
8-10min, the dosage of the irradiation is 15-25 Mrad；
In the preparation process of polyethylene/graphene compound, the mixing temperature is room temperature, and incorporation time 6-8min is described
The operating temperature of two steps type extruding granulator is：One 90 ± 5 DEG C of area, 100 ± 5 DEG C of 2nd area, 110 ± 5 DEG C of 3rd area, four areas 115 ± 5
DEG C, 110 ± 5 DEG C of 5th area, 110 ± 5 DEG C of head.
5. a kind of preparation method of high-tension cable conductive shield material according to claim 3, it is characterised in that：
The preparation method further includes the preparation process of graphite oxide, and it is multiple which is located at graphene/titanium dioxide nano-particle
Before the preparation process for closing object；
The preparation of the graphite oxide is specially：
The concentrated sulfuric acid that mass percentage content is 98% is first cooled to 0-4 DEG C, day is then sequentially added during stirring
Right crystalline flake graphite, sodium nitrate, potassium permanganate powder, then at 10-15 DEG C be stirred to react 1-2h successively, stirred at 32-40 DEG C
Reaction 0.5-1h is mixed, then adds in first part of deionized water, and 0.5-1h is stirred to react at 95-105 DEG C, is subsequently added into
Second part of deionized water releases dilute reaction solution, adds the hydrogen peroxide that mass percentage content is 5% and filters while hot, obtained filter cake
Multiple centrifuge washing is carried out with the hydrochloric acid solution and deionized water that mass percentage content is 5%, is finally dried at 40-50 DEG C
, wherein, the concentrated sulfuric acid, natural flake graphite, sodium nitrate, potassium permanganate powder, first part of deionized water, second part go
Ionized water, the weight part ratio of hydrogen peroxide are 20:2:1:6:18-19:1.
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|---|---|---|---|---|
| CN111730778A (en) * | 2020-06-23 | 2020-10-02 | 江苏瑞文新材料科技有限公司 | Preparation method of polyethylene cable insulating material based on nano silicon dioxide |
| CN114736451A (en) * | 2022-04-02 | 2022-07-12 | 江阴市海江高分子材料有限公司 | Preparation method of high-performance multifunctional cable shielding material |
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