CN106279929B - A kind of cable semi-conductive shielding material and preparation method - Google Patents

A kind of cable semi-conductive shielding material and preparation method Download PDF

Info

Publication number
CN106279929B
CN106279929B CN201610814114.9A CN201610814114A CN106279929B CN 106279929 B CN106279929 B CN 106279929B CN 201610814114 A CN201610814114 A CN 201610814114A CN 106279929 B CN106279929 B CN 106279929B
Authority
CN
China
Prior art keywords
carbon black
shielding material
conductive shielding
antioxidant
cable semi
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201610814114.9A
Other languages
Chinese (zh)
Other versions
CN106279929A (en
Inventor
吕常海
王建明
盛大泽
刘军岗
韩小杰
李伟
董君慧
夏伟伟
张卫东
刘春明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rongcheng Power Supply Co Of State Grid Shandong Electric Power Comany
State Grid Corp of China SGCC
Original Assignee
Rongcheng Power Supply Co Of State Grid Shandong Electric Power Comany
State Grid Corp of China SGCC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rongcheng Power Supply Co Of State Grid Shandong Electric Power Comany, State Grid Corp of China SGCC filed Critical Rongcheng Power Supply Co Of State Grid Shandong Electric Power Comany
Priority to CN201610814114.9A priority Critical patent/CN106279929B/en
Publication of CN106279929A publication Critical patent/CN106279929A/en
Application granted granted Critical
Publication of CN106279929B publication Critical patent/CN106279929B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions 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
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/06Polyethene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/002Physical properties
    • C08K2201/003Additives being defined by their diameter
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00Applications
    • C08L2203/20Applications use in electrical or conductive gadgets
    • C08L2203/202Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring

Abstract

A kind of cable semi-conductive shielding material and preparation method, the raw material including following weight percent: polyethylene 40-80%, ethylene-vinyl acetate copolymer 5-20%, modified carbon black 15-40%, auxiliary agent 5-20%, crosslinking agent 0.1-1.5%.Present invention firstly provides the supported active metals on carbon black, improve the space potential distribution on carbon black, and the surface nature of carbon black can be improved to a certain extent, improve degree of scatter of the carbon black in shielding material preparation process, to prepare, surface is smooth, the small excellent shielding material with conductor contact hole.

Description

A kind of cable semi-conductive shielding material and preparation method
Technical field
The present invention relates to a kind of shielding material, especially a kind of mesolow fuel-resistant rubber semi-conductive shielding material for cable The preparation method of material and this shielding material.
Background technique
The main reason for Journal of Sex Research steady in a long-term of cable is thought, influences Long Service Life both at home and abroad first is that twisted Shelf depreciation caused by gap between conductor and insulation.It is in national standard GB/T12706-2008, IEC502 clearly stipulate that right 3.6/6kV and the above XLPE insulated power cable should have conductor and insulation shielding.In the cable, conductive surface electric field highest, such as Fruit conductor shielding is slightly not perfect, and a possibility that discharging of dissociating is maximum.
The effective measures for preventing shelf depreciation are using semiconductive conductor shielding structure, and conductor shielding can be divided into semi-conductive tape Two kinds of formula are extruded around packet mode and semiconductive material.Due to semi-conductive tape around packet mode can not accomplish conductor and insulation between be not it is free Gap, effect is very unsatisfactory, in addition to seldom using in lower voltage grade, does not use substantially now.What is generallyd use now is partly to lead Electrical materials and appliances extrude structure, it contacts with conductor, insulation secure rigid and without gap, greatly reduce the partial discharge value of cable, improve The long-time stability and service life of cable.
Semiconductive shielding layer is in crosslinked cable especially high-pressure cross-linking cable for protecting main insulating layer not to be destroyed Semiconductive composite material, performance directly determine the quality of crosslinked cable.According to the voltage class of application be divided into low pressure (35kV with Under), mesohigh (66~110kV), high pressure (110~220kV), super-pressure (> 220kV) cable screen material.Crosslinked cable is partly led The performance to crosslinked cable such as the smoothness of shield layer, the cohering of shielded layer and insulating layer, impurity in semiconductive shieldin material It influences very big.The use of inside and outside semiconductive shielding layer main function is in the cable to keep field distribution uniform, reduces electric field strength, Air gap on reduction conductor and insulating layer interface, raising cable starting corona discharge and the resistance to free discharge performance of cable, and The temperature rise for reducing insulating layer to a certain extent, protects major insulation.
Shielded layer should have following performance: the tg δ of shielding and insulated compound medium wants small, exhausted to XLPE of tg δ very little etc. For edge material, shielding layer resistivity used is appropriate, increases complex media tg δ not;The joule loss and tg δ of shielded layer Cause adstante febre, shielded layer does not soften;Shielding and conductor answer secure rigid to contact, and contact resistance wants small between them, they it Between contact resistance it is big, cause partial discharge, the fever of contact resistance position is damaged shielded layer, is finally likely to result in insulation breakdown; The voltage with shielded layer is shared, shielded layer will not be caused first to puncture, and then prevent insulation breakdown.
CN101585943A discloses cable semi-conductive shielding material and its preparation side of a kind of technical field of cable Method, the component and its content of the material are as follows: 100 parts by weight of ethene-vinyl acetate copolymer or linear low density polyethylene, charcoal Black 10-50 parts by weight, antioxidant 0.1-5 parts by weight and crosslinking agent 0.1-5 parts by weight.The shielding material can effectively inhibit The accumulation of insulating materials Space-charge, and the electric field threshold value of space charge injection is improved, reduce space charge limited current (SCLC) effect that insulating materials conductivity caused by increases.
CN101891915A discloses a kind of strippable semi-conductive shielding material for insulation of cross-linked cable, by mass component Are as follows: 45%~60% EVA material, 30%~40% carbon black, 6%~10% plasticizer, 1%~2.5% crosslinking agent, And 0.1%~1% antioxidant;Wherein the EVA material is the adjustable copolymer of ratio of ethylene and vinyl acetate;The friendship Connection agent is peroxide;The plasticizer include one of oil, paraffin, stearic acid, zinc stearate, polyethylene wax or it is a variety of mix It closes;The shielding material is sequentially fed intake mixing in clean mixer by recipe ingredient, then through extruder extruding pelletization, then plus Crosslinking agent is made;The shielding material is improved applied to 35kV and its cross-linked polyethylene insulated cable insulation semiconductive screen below The electric property of material product is covered, eliminates the incipient scorch phenomenon in product use process, and improve the residual of insulating surface.
Summary of the invention
Carbon black is the important source material for preparing shielding material, and the property of carbon black has shielding material important influence.Wherein The friction of charcoal night, poor carbon black distribution, polymer gel and environmental pollution are to influence light between insulating layer and semi-conductive layer The principal element of slippage degree.Present invention firstly provides the supported active metals on carbon black, the space potential point on carbon black is improved Cloth, and the surface nature of carbon black can be improved to a certain extent, improve dispersion of the carbon black in shielding material preparation process Degree, to prepare, surface is smooth, the small excellent shielding material with conductor contact hole.
A kind of cable semi-conductive shielding material, the raw material including following weight percent: polyethylene 40-80%, ethylene-vinegar Sour ethylene copolymer 5-20%, modified carbon black 15-40%, auxiliary agent 5-20%, crosslinking agent 0.1-1.5%.
The auxiliary agent is one of hexamethylene, toluene, normal octane, dimethyl carbonate, diethyl carbonate;
The modified carbon black is that carbon black is obtained by supported active metals, and the active metal is nickel and aluminium.The modification The following steps are included: carbon black pre-processes, carbon black impregnates 24-72h in lye, soaks in nitric acid after washing the preparation method of carbon black Stain 24-72h, is cleaned through deionized water, 150-200 DEG C of calcining and activating under inert atmosphere;By the carbon black after activation be added to containing Ni2+And Al3+Aqueous solution in, ammonium hydroxide adjustment pH value is added to 9-10, and stirs 1-6h, decompression filters, cleaning filter cake, 110-130 DEG C of dry 1h, in 300-350 DEG C of calcining 3-10h to get the modified carbon black under inert atmosphere.
The wherein Ni2+And Al3+Molar ratio be 5-10:1, preferably 8-9:1.
The Ni2+And Al3+The molar concentration of aqueous solution be 1-3mol/L.
In terms of nickel and aluminium, nickel load mass percent is 10-20%, the load quality percentage of aluminium in the modified carbon black It is 1-4%.
The partial size of the modified carbon black is 100-5000nm, preferably 500-1000nm.
The crosslinking agent is one of Triallyl isocyanurate, trihydroxy methyl propane trimethyl acrylate.
The cable semi-conductive shielding material further includes antioxidant, the antioxidant be antioxidant 1010, antioxidant 1024, The mixture of any one or more of antioxidant 1035, antioxidant 264 and DNP, the dosage of the antioxidant are 0.5- 2wt%.
Specific embodiment
The technical solution of invention is described in detail combined with specific embodiments below.
The following steps are included: carbon black pre-processes, carbon black soaks the preparation method of modified carbon black described in embodiment in lye Stain 24-72h, impregnates 24-72h in nitric acid after washing, clean through deionized water, 150-200 DEG C of calcining and activating under inert atmosphere; Carbon black after activation is added to containing Ni2+And Al3+Aqueous solution in, ammonium hydroxide adjustment pH value is added to 9-10, and stirs 1- 6h, decompression filter, and filter cake are cleaned, in 300-350 DEG C of calcining 3-10h to get institute at 110-130 DEG C of dry 1h, inert atmosphere State modified carbon black.
Embodiment 1
A kind of cable semi-conductive shielding material, the raw material including following weight percent: polyethylene 50%, ethyl vinyl acetate Ethylene copolymer 20%, modified carbon black 19%, auxiliary agent 10%, crosslinking agent 0.5%, antioxidant 0.5%.
Embodiment 2
A kind of cable semi-conductive shielding material, the raw material including following weight percent: polyethylene 45%, ethyl vinyl acetate Ethylene copolymer 25%, modified carbon black 13%, auxiliary agent 15%, crosslinking agent 1%, antioxidant 1%.
Comparative example 1
A kind of cable semi-conductive shielding material, the raw material including following weight percent: polyethylene 50%, ethyl vinyl acetate Ethylene copolymer 20%, modified carbon black 19%, auxiliary agent 10%, crosslinking agent 0.5%, antioxidant 0.5%.
Embodiment and comparative example is tested for the property, as a result as shown in the table:
Embodiment 1 Embodiment 2 Comparative example 1
Volume resistivity (Ω m) 35 32 127
50 μm or more amount of impurities 5 6 385
Wherein described 50 μm or more amount of impurities are with the average value in 1kg finished product after testing.
The present invention can be summarized with others without prejudice to the concrete form of spirit or essential characteristics of the invention.Of the invention All embodiments can only all be considered the description of the invention rather than limit that all technology contents according to the present invention are made Any trickle amendment or equivalent replacement out, belong within technical solution of the present invention.

Claims (7)

1. a kind of cable semi-conductive shielding material, the raw material including following weight percent: polyethylene 40-80%, ethyl vinyl acetate Ethylene copolymer 5-20%, modified carbon black 15-40%, auxiliary agent 5-20%, crosslinking agent 0.1-1.5%;The modified carbon black is charcoal Black to obtain by supported active metals, the active metal is nickel and aluminium;The preparation method of the modified carbon black includes following step Rapid: carbon black pretreatment, carbon black impregnate 24-72h in lye, impregnate 24-72h after washing in nitric acid, clean through deionized water, 150-200 DEG C of calcining and activating under inert atmosphere;Carbon black after activation is added to containing Ni2+And Al3+Aqueous solution in, be added Ammonium hydroxide adjusts pH value to 9-10, and stirs 1-6h, and decompression filters, and filter cake is cleaned, at 110-130 DEG C of dry 1h, inert atmosphere In 300-350 DEG C of calcining 3-10h to get the modified carbon black;In terms of nickel and aluminium, nickel load quality percentage in the modified carbon black Than being 10-20%, the load quality percentage of aluminium is 1-4%;The partial size of the modified carbon black is 100-5000nm.
2. cable semi-conductive shielding material as described in claim 1, it is characterised in that the auxiliary agent be hexamethylene, normal octane, One of dimethyl carbonate, diethyl carbonate.
3. cable semi-conductive shielding material as described in claim 1, it is characterised in that the wherein Ni2+And Al3+Molar ratio For 5-10:1.
4. cable semi-conductive shielding material as described in claim 1, it is characterised in that the wherein Ni2+And Al3+Molar ratio For 8-9:1.
5. cable semi-conductive shielding material as described in claim 1, it is characterised in that the partial size of the modified carbon black is 500- 1000nm。
6. cable semi-conductive shielding material as described in claim 1, it is characterised in that the crosslinking agent is triallyl isocyanide One of urea acid esters, trihydroxy methyl propane trimethyl acrylate.
7. cable semi-conductive shielding material as described in claim 1, it is characterised in that the cable semi-conductive shielding material is also Including antioxidant, the antioxidant is appointing in antioxidant 1010, antioxidant 1024, antioxidant 1035, antioxidant 264 and DNP One or more of mixtures, the dosage of the antioxidant are 0.5-2wt%.
CN201610814114.9A 2016-09-09 2016-09-09 A kind of cable semi-conductive shielding material and preparation method Expired - Fee Related CN106279929B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610814114.9A CN106279929B (en) 2016-09-09 2016-09-09 A kind of cable semi-conductive shielding material and preparation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610814114.9A CN106279929B (en) 2016-09-09 2016-09-09 A kind of cable semi-conductive shielding material and preparation method

Publications (2)

Publication Number Publication Date
CN106279929A CN106279929A (en) 2017-01-04
CN106279929B true CN106279929B (en) 2019-03-01

Family

ID=57709872

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610814114.9A Expired - Fee Related CN106279929B (en) 2016-09-09 2016-09-09 A kind of cable semi-conductive shielding material and preparation method

Country Status (1)

Country Link
CN (1) CN106279929B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110092968B (en) * 2019-05-06 2021-08-10 珠海中盛电线电缆有限责任公司 High-stability waterproof cable
CN110092969B (en) * 2019-05-06 2021-08-24 内蒙古仁达特种电缆有限公司 High-stability cable
CN112980085A (en) * 2019-12-18 2021-06-18 中广核三角洲(江苏)塑化有限公司 Preparation method of semiconductive polyethylene shielding material
CN111808448A (en) * 2020-05-07 2020-10-23 安徽省克林泰迩再生资源科技有限公司 Preparation method for loading metal oxide on surface of pyrolysis carbon black

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102097176A (en) * 2011-03-04 2011-06-15 沈勇 Shielded power cable
CN102492199A (en) * 2011-11-24 2012-06-13 无锡江南电缆有限公司 Cable semi-conductive shielding material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102097176A (en) * 2011-03-04 2011-06-15 沈勇 Shielded power cable
CN102492199A (en) * 2011-11-24 2012-06-13 无锡江南电缆有限公司 Cable semi-conductive shielding material

Also Published As

Publication number Publication date
CN106279929A (en) 2017-01-04

Similar Documents

Publication Publication Date Title
CN106279929B (en) A kind of cable semi-conductive shielding material and preparation method
US4909960A (en) Semiconductor resin composition
CN105131419B (en) A kind of high voltage direct current cable semiconductive shieldin material and preparation method thereof
WO2017026391A1 (en) Dc cable, and method for manufacturing composition and dc cable
CN109206731A (en) A kind of power cable shielding material of containing graphene and preparation method thereof
JP2015183039A (en) Method for producing insulation material, master batch, insulation material, and power cable
JP2007103247A (en) Insulation composite and electric wire/cable
US20160148717A1 (en) Semiconductive resin composition and power transmission cable using same
JPWO2011093211A1 (en) Crosslinked polyolefin composition, DC power cable, and DC power line construction method
CN107266780A (en) A kind of power cable non-crosslinked semi-conductive shielding material and preparation method thereof
CN103665529B (en) Semiconduction inner shield feed composition and semiconduction inner shield material and method for making thereof and mesolow and 110 kv cables
CN102093619A (en) Method for preparing positive temperature coefficient (PTC) conducting material by compounding polyaniline/carbon black/polyethylene
CN115044130A (en) Shielding material based on carbon nanofiber modification and preparation method and application thereof
CN114685883A (en) Ultra-smooth high-voltage cable semi-conductive inner shielding material and preparation method thereof
CN105255017A (en) Ethylene-propylene rubber insulating material for medium voltage power cable and preparation method thereof
CN109251398A (en) Semi-conductive shielding material for insulation and preparation method thereof
JP2014218617A (en) Resin composition and dc cable
JP6320692B2 (en) DC cable and electrical insulation composition
CN105348620B (en) A kind of heat-resisting 105 DEG C of weather-proof processes for chemically crosslinked polyethylene Insulation Materials
CN105061879A (en) Ethylene-vinyl acetate copolymer based thermoplastic semiconductive shielding material for conductor and preparation method of thermoplastic semiconductive shielding material
CN106700211A (en) Semi-conductive shielding material for high voltage grade power cables
CN107189154B (en) Water tree resistant chemical crosslinked polyethylene insulating material
CN109438807B (en) Insulating material and preparation method and application thereof
CN109841347B (en) Anti-aging power cable
KR101388136B1 (en) DC Power Cable Using Semiconductive Composition And Insulation Composition

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190301

Termination date: 20200909

CF01 Termination of patent right due to non-payment of annual fee