CN106243526A - A kind of water-fast tree presses second third Insulation Material and preparation method thereof - Google Patents
A kind of water-fast tree presses second third Insulation Material and preparation method thereof Download PDFInfo
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- CN106243526A CN106243526A CN201610741016.7A CN201610741016A CN106243526A CN 106243526 A CN106243526 A CN 106243526A CN 201610741016 A CN201610741016 A CN 201610741016A CN 106243526 A CN106243526 A CN 106243526A
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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
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- 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
- H01B3/28—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances natural or synthetic rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Abstract
The invention discloses pressure second the third Insulation Material in a kind of water-fast tree, its raw material components includes: ethylene propylene diene rubber 80～100 parts, Low Density Polyethylene 0～20 parts, vulcanizing agent 2～5 parts, vulcanization accelerator 5～10 parts, filler 60～100 parts, antioxidant 1～3 parts, softening agent 4～20 parts, stabilizer 5～10 parts and water-fast tree auxiliary agent 1～5 parts, described number is mass fraction.Pressing the cooperative effect highly significant between the second each raw material components of the third Insulation Material in the present invention is water-fast tree, the hot-air aging resistance of resulting materials, mechanical performance, electrical property and water treeing resistance performance are the most excellent, and prepare simple, with low cost.
Description
Technical field
The present invention relates to a kind of water-fast tree is pressed second third Insulation Material and preparation method thereof, belong to Material Field.
Background technology
Water tree is a kind of special voltage ageing phenomenon in insulant, and reason is the work that moisture content invades after insulating barrier at electric field
Under with, in leading to that insulating inner or interface generation space group dendritic, by a diameter of a few micrometers (or bigger) are formed
Road.The substantial amounts of midium voltage cable of power transmission and transformation system runs in underground, and As time goes on, outside moisture can gradually penetrate into cable
Insulation in grow Cheng Shuishu, water tree can As time goes on continued growth, ultimately result in insulation breakdown, become cable in early days
The main cause destroyed.Compared with developed countries, in China's electrical network, the operation troubles rate of electric line is of a relatively high, Qi Zhongyou
Cause insulation to occur water tree to puncture in the internal extreme prematurity unboiled water tree of cable to be one of major reason causing line fault, therefore resist
Pressing second the third cable in water tree is the trend that future electrical energy cable industry develops.
Summary of the invention
In order to solve the water tree problem of Insulation Material in prior art, the present invention provides pressure second the third Insulation Material in a kind of water-fast tree
And preparation method thereof.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is as follows:
Pressing second the third Insulation Material in a kind of water-fast tree, its raw material components includes: ethylene propylene diene rubber 80～100 parts,
Low Density Polyethylene 0～20 parts,
Vulcanizing agent 2～5 parts,
Vulcanization accelerator 5～10 parts,
Filler 60～100 parts,
Antioxidant 1～3 parts,
Softening agent 4～20 parts,
Stabilizer 5～10 parts；
Water-fast tree auxiliary agent 1～5 parts；
Above-mentioned number is mass fraction.
In order to be further ensured that the performances such as the mechanical performance of product, weatherability, resistance to water, it is preferable that ethylene propylene diene rubber
Three monomers be 5-ethylidene-2-norbornene (ENB) or 5-vinyl-2-norborny (VNB, VNB are the isomers of ENB, with
Time be synthesis ENB intermediate product), ethylene contents is 65-75%.
In order to promote the cooperative effect between each component further, ethylene propylene diene rubber selects Dow Chemical company
The Vistalon 1703P of Nordel 3722P or Exxon Mobil Corporation or U.S.'s lion chemistry 4345,4191 trade mark.
In order to promote the cooperative effect between each component further, improve the mechanical performance of product and water-fast tree property further
Can, it is preferable that described vulcanizing agent is cumyl peroxide, and vulcanization accelerator is zinc oxide；Described filler is calcinated argil.
In order to promote the cooperative effect between each component further, improve mechanical performance and the weather resisteant of product further
Can, it is preferable that described antioxidant is 4,4 ' double (2,2-dimethyl benzyl) diphenylamines or 2,2,4-trimethyl-1,2-dihydro quinoline
Quinoline polymer.
In order to promote the cooperative effect between each component further, improve further the mechanical performance of product, electrical property, resistance to
Water tree performances etc., described softening agent is the mixture of paraffin and dimethicone, and wherein, dimethicone divides with the weight of paraffin
Number ratio is 1:4～6.Described stabilizer is Plumbum preparatium or Plumbum preparatium master batch；Water-fast tree auxiliary agent be lead stearate, dibasic lead stearate,
At least one in dibasic lead phosphite or silane coupler.
The application employs the ethylene propylene diene rubber of Third monomer (ENB or VNB) content low (≤1%) and 4,4 ' double
(2,2-dimethyl benzyl) diphenylamines compounds, and makes the heat-resisting of material and hot-air aging resistance have and is obviously improved；Pass through simultaneously
The collaborative mechanical performance further increasing material of Low Density Polyethylene and other component and electrical property；By to vulcanizing agent and
Its consumption coordinates with other components so that the stability of material reaches optimal；By Plumbum preparatium master batch and water-fast tree auxiliary agent and its
The cooperation of his component makes the electrical property of material, water treeing resistance performance obtain most preferably；Cooperative effect between each component of the application is non-
Chang Xianzhu, the hot-air aging resistance of resulting materials, mechanical performance, electrical property and water treeing resistance performance have had carrying of highly significant
Rising, material all can be had a negative impact by the change of each component type and consumption.
In order to be further ensured that the performances such as the water-fast tree of material, the most water-fast tree is pressed the raw material components bag of second the third Insulation Material
Include: ethylene propylene diene rubber 90 parts, Low Density Polyethylene 10 parts, cumyl peroxide 3.5 parts, zinc oxide 5 parts, calcinated argil 65
Part, 4,4 ' double (2,2-dimethyl benzyl) diphenylamines 2 parts, 5 parts of paraffin, dimethicone 1 part, Plumbum preparatium master batch 7 parts is with water-fast
Tree auxiliary agent 1 part, described number is mass fraction.
Above-mentioned water-fast tree is pressed the preparation method of second the third Insulation Material, the following steps including connected in order:
1) banburying 3～5min in banbury by ethylene propylene diene rubber and Low Density Polyethylene；
2) vulcanization accelerator, filler, antioxidant, softening agent, stabilizer and water-fast tree auxiliary agent are disposably joined banburying
With step 1 in machine) gained material mixing 5～10min；
3) by step 2) gained material removal banbury, it is placed in two-roll mill mixing, is then added to filter rubber machine filter
Rubber；
4) by step 3) gained material add after mill mixing is weighed banbury continue banburying, add in internal mixing pass
Enter vulcanizing agent, then proceed to banburying 3～5min；
5) by step 4) gained material draws thin logical through double roller mills, and grind page bottom sheet through three rollers afterwards and obtain mixing thing
Material；
6) by step 5) the mixing material of gained uses gear pump rubber extruding machine to carry out pelletize, cool down to obtain semi-finished product particle；
7) by step 6) after the semi-finished product particle of gained parks 24h, use rubber screw extruder to extrude, obtain resistance to
Water tree is pressed second the third Insulation Material.
Step 3) in material is put in mill in banbury is to dispel the heat, be prone to feeding simultaneously and filter rubber to filter rubber machine.
Step 4) China weighs is to add vulcanizing agent.
In order to be further ensured that the combination property of resulting materials, it is preferable that step 2) in melting temperature less than 125 DEG C；Step
3) in, filter rubber temperature controls within 150 DEG C.
The NM technology of the present invention is all with reference to prior art.
The present invention is water-fast tree is pressed the cooperative effect highly significant between the second each raw material components of the third Insulation Material, resulting materials
Hot-air aging resistance, mechanical performance, electrical property and water treeing resistance performance are the most excellent, and prepare simple, with low cost.
Detailed description of the invention
In order to be more fully understood that the present invention, it is further elucidated with present disclosure below in conjunction with embodiment, but the present invention
Content is not limited solely to the following examples.
Embodiment 1
The raw material components pressing second the third Insulation Material in water-fast tree is following (described part is weight portion):
Ethylene propylene diene rubber (the Nordel IP 3722P of Dow Chemical company) 90 parts,
Low Density Polyethylene (Lanzhou Petrochemical, 7042N) 10 parts,
Cumyl peroxide 3.5 parts,
Zinc oxide 5 parts,
Calcinated argil (SG-9002 ultrawhite, 4000 mesh, Guangdong Sen Xin Trade Co., Ltd.) 65 parts,
4,4 ' double (2,2-dimethyl benzyl) diphenylamines 2 parts,
5 parts of paraffin (No. 58 semi-refined paraffin waxs of grand celebration, chemical industry marketing center is believed in Zhengzhou hundred million),
Dimethicone (201 silicone oil, Dongguan City Hong Ya organosilicon company limited) 1 part.
Embodiment 2
The raw material components pressing second the third Insulation Material in water-fast tree is following (described part is weight portion):
Ethylene propylene diene rubber 90 (the Nordel IP 3722P of Dow Chemical company) part,
Low Density Polyethylene (Lanzhou Petrochemical, 7042N) 10 parts,
Cumyl peroxide 3.5 parts,
Zinc oxide 5 parts,
Calcinated argil (SG-9002 ultrawhite, 4000 mesh, Guangdong Sen Xin Trade Co., Ltd.) 65 parts,
4,4 ' double (2,2-dimethyl benzyl) diphenylamines 2 parts,
5 parts of paraffin (No. 58 semi-refined paraffin waxs of grand celebration, chemical industry marketing center is believed in Zhengzhou hundred million),
Dimethicone (201 silicone oil, Dongguan City Hong Ya organosilicon company limited) 1 part,
7 parts, Plumbum preparatium (GB, Zhengzhou Hui Dong Chemical Co., Ltd.).
Embodiment 3
The raw material components pressing second the third Insulation Material in water-fast tree is following (described part is weight portion):
Ethylene propylene diene rubber (the Vistalon 1703P of Exxon Mobil Corporation) 100 parts,
Cumyl peroxide 3.5 parts,
Zinc oxide 5 parts,
Calcinated argil (SG-9002 ultrawhite, 4000 mesh, Guangdong Sen Xin Trade Co., Ltd.) 65 parts,
4,4 ' double (2,2-dimethyl benzyl) diphenylamines 2 parts,
5 parts of paraffin (No. 58 semi-refined paraffin waxs of grand celebration, chemical industry marketing center is believed in Zhengzhou hundred million),
Dimethicone (201 silicone oil, Dongguan City Hong Ya organosilicon company limited) 1 part,
7 parts, Plumbum preparatium (GB, Zhengzhou Hui Dong Chemical Co., Ltd.).
Embodiment 4
The raw material components pressing second the third Insulation Material in water-fast tree is following (described part is weight portion):
Ethylene propylene diene rubber (U.S. lion chemistry EPDM4345) 80 parts,
Low Density Polyethylene (Dushanzi petrochemical industry, 0209AA) 20 parts,
Cumyl peroxide 3.5 parts,
Zinc oxide 5 parts,
Calcinated argil (SG-9002 ultrawhite, 4000 mesh, Guangdong Sen Xin Trade Co., Ltd.) 65 parts,
4,4 ' double (2,2-dimethyl benzyl) diphenylamines 2 parts,
5 parts of paraffin (No. 58 semi-refined paraffin waxs of grand celebration, chemical industry marketing center is believed in Zhengzhou hundred million),
Dimethicone (201 silicone oil, Dongguan City Hong Ya organosilicon company limited) 1 part,
7 parts, Plumbum preparatium (GB, Zhengzhou Hui Dong Chemical Co., Ltd.).
Embodiment 5
The raw material components pressing second the third Insulation Material in water-fast tree is following (described part is weight portion):
Ethylene propylene diene rubber (the Nordel IP 3722P of Dow Chemical company) 90 parts,
Low Density Polyethylene (Lanzhou Petrochemical, 7042N) 10 parts,
Cumyl peroxide 3.5 parts,
Zinc oxide 5 parts,
Calcinated argil (SG-9002 ultrawhite, 4000 mesh, Guangdong Sen Xin Trade Co., Ltd.) 65 parts,
4,4 ' double (2,2-dimethyl benzyl) diphenylamines 2 parts,
5 parts of paraffin (No. 58 semi-refined paraffin waxs of grand celebration, chemical industry marketing center is believed in Zhengzhou hundred million),
Dimethicone (201 silicone oil, Dongguan City Hong Ya organosilicon company limited) 1 part,
7 parts, Plumbum preparatium (GB, Zhengzhou Hui Dong Chemical Co., Ltd.),
Lead stearate 1 part.
Embodiment 6
The raw material components pressing second the third Insulation Material in water-fast tree is following (described part is weight portion):
Ethylene propylene diene rubber (U.S. lion chemistry EPDM4191) 80 parts,
Low Density Polyethylene (husky uncle basis, M200024) 5 parts,
Cumyl peroxide 3.5 parts,
Zinc oxide 6 parts,
Calcinated argil (SG-9002 ultrawhite, 4000 mesh, Guangdong Sen Xin Trade Co., Ltd.) 60 parts,
4,4 ' double (2,2-dimethyl benzyl) diphenylamines 1 part,
4 parts of paraffin (No. 58 semi-refined paraffin waxs of grand celebration, chemical industry marketing center is believed in Zhengzhou hundred million),
Dimethicone (201 silicone oil, Dongguan City Hong Ya organosilicon company limited) 1 part,
Plumbum preparatium master batch (01, Zibo Jin Fu Chemical Co., Ltd.) 5 parts,
Dibasic lead stearate 2 parts.
Water-fast tree in foregoing embodiments is pressed second the third Insulation Material be all prepared as follows:
1) weighing: accurately weigh various material according to formula standby；
2) mixing: first load weighted ethylene propylene diene rubber and Low Density Polyethylene are joined in banbury banburying 3～
5min；After material banburying fully by zinc oxide, 4,4 ' double (2,2-dimethyl benzyl) diphenylamines, paraffin, dimethicone,
Calcinated argil, Plumbum preparatium master batch and water-fast tree auxiliary agent disposably join in banbury, mixing 5～10min；Material is mixing to all
Even, the temperature in whole mixing process must control within 125 DEG C；Finally mixing material is removed banbury, be placed in double roller
In mill mixing, the rubber material after mixing is joined filter rubber machine filter rubber, filter rubber machine temperature controls, within 150 DEG C, to filter rubber
The rubber material completed adds banbury after mill mixing is weighed and continues banburying, adds peroxidating diisopropyl in internal mixing pass
Benzene, banburying 3～5min, the rubber material that banburying completes draws through double roller mills thin logical, grinds page bottom sheet through three rollers afterwards and obtain mixing
Material；
3) pelletize: the material after mixing stone roller page uses gear pump rubber extruding machine to carry out pelletize, through cooling system, collection system
Obtain semi-finished product particle.
4) extrusion molding: after semi-finished product particle parks 24h, uses rubber screw extruder that particle carries out extrusion processing,
Obtain this Insulation Material.
Table 1 each embodiment resulting materials performance table
Claims (10)
1. a water-fast tree is pressed second the third Insulation Material, it is characterised in that its raw material components includes:
Ethylene propylene diene rubber 80～100 parts,
Low Density Polyethylene 0～20 parts,
Vulcanizing agent 2～5 parts,
Vulcanization accelerator 5～10 parts,
Filler 60～100 parts,
Antioxidant 1～3 parts,
Softening agent 4～20 parts,
Stabilizer 5～10 parts；
Water-fast tree auxiliary agent 1～5 parts；
Above-mentioned number is mass fraction.
Water-fast tree the most as claimed in claim 1 is pressed second the third Insulation Material, it is characterised in that ethylene propylene diene rubber Third monomer is
ENB or VNB, ethylene contents is 65-75%.
Water-fast tree the most as claimed in claim 2 is pressed second the third Insulation Material, it is characterised in that ethylene propylene diene rubber is LG-DOW
The Nordel IP 3722P of chemical company, the Vistalon 1703P of Exxon Mobil Corporation, U.S. lion chemistry EPDM4345
Or at least one in U.S. lion chemistry EPDM4191.
4. the water-fast tree as described in claim 1-3 any one is pressed second the third Insulation Material, it is characterised in that vulcanizing agent is peroxide
Changing diisopropylbenzene (DIPB), vulcanization accelerator is zinc oxide.
5. the water-fast tree as described in claim 1-3 any one is pressed second the third Insulation Material, it is characterised in that filler is calcining pottery
Soil；Antioxidant is 4,4 ' double (2,2-dimethyl benzyl) diphenylamines or 2,2,4-trimethyl-1,2-dihyaroquinoline polymer.
6. the water-fast tree as described in claim 1-3 any one is pressed second the third Insulation Material, it is characterised in that softening agent is quality
Than be 1:(4～6) dimethicone and the mixture of paraffin；Stabilizer is Plumbum preparatium or Plumbum preparatium master batch.
7. according to the water-fast tree described in claim 1-3 any one is pressed second the third Insulation Material, it is characterised in that water-fast tree auxiliary agent
For at least one in lead stearate, dibasic lead stearate, dibasic lead phosphite or silane coupler.
8. the water-fast tree as described in claim 1-3 any one is pressed second the third Insulation Material, it is characterised in that its raw material components bag
Include:
Ethylene propylene diene rubber 90 parts,
Low Density Polyethylene 10 parts,
Vulcanizing agent 3.5 parts,
Vulcanization accelerator 5 parts,
Filler 65 parts,
2 parts of antioxidant,
Softening agent 6 parts,
Stabilizer 7 parts；
Water-fast tree auxiliary agent 1 part；
Above-mentioned number is mass fraction.
9. the water-fast tree described in claim 1-8 any one is pressed the preparation method of second the third Insulation Material, it is characterised in that include
Following steps connected in order:
1) banburying 3～5min in banbury by ethylene propylene diene rubber and Low Density Polyethylene；
2) vulcanization accelerator, filler, antioxidant, softening agent, stabilizer and water-fast tree auxiliary agent are disposably joined in banbury
With step 1) gained material mixing 5～10min；
3) by step 2) gained material removal banbury, it is placed in two-roll mill mixing, is then added to filter rubber machine filter rubber；
4) by step 3) gained material add after mill mixing is weighed banbury continue banburying, in internal mixing pass add sulfur
Agent, then proceedes to banburying 3～5min；
5) by step 4) gained material draws thin logical through double roller mills, and grind page bottom sheet through three rollers afterwards and obtain mixing material；
6) by step 5) the mixing material of gained uses gear pump rubber extruding machine to carry out pelletize, cool down to obtain semi-finished product particle；
7) by step 6) after the semi-finished product particle of gained parks 24h, use rubber screw extruder to extrude, obtain water-fast tree
Middle pressure second the third Insulation Material.
10. preparation method as claimed in claim 9, it is characterised in that step 2) in melting temperature less than 125 DEG C；Step 3)
Middle filter rubber temperature is less than 150 DEG C.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106633432A (en) * | 2016-12-23 | 2017-05-10 | 太仓冠联高分子材料有限公司 | EPDM (Ethylene-Propylene-Diene Monomer) rubber for medium/low-voltage cable accessories and preparation method of EPDM rubber |
| CN108841089A (en) * | 2018-07-06 | 2018-11-20 | 江苏上上电缆集团有限公司 | Ethyl-propylene insulating materials and preparation method thereof are pressed in a kind of 35kV environment-friendly type |
| CN109957179A (en) * | 2017-12-22 | 2019-07-02 | 特变电工股份有限公司 | Ultra-clean EP rubbers cable insulating material of 35kV and preparation method thereof |
| CN111410797A (en) * | 2020-05-26 | 2020-07-14 | 远东电缆有限公司 | High-performance medium-voltage ethylene-propylene insulating material with voltage of 35kV or below for wind power |
| CN112226000A (en) * | 2020-09-14 | 2021-01-15 | 江苏上上电缆集团有限公司 | Special medium-voltage flexible cable rubber insulation material for rail transit and preparation method and application thereof |
| CN115926327A (en) * | 2022-05-27 | 2023-04-07 | 江苏上上电缆集团新材料有限公司 | Low-temperature-resistant high-strength high-electrical-property thermosetting insulating material and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106633432A (en) * | 2016-12-23 | 2017-05-10 | 太仓冠联高分子材料有限公司 | EPDM (Ethylene-Propylene-Diene Monomer) rubber for medium/low-voltage cable accessories and preparation method of EPDM rubber |
| CN109957179A (en) * | 2017-12-22 | 2019-07-02 | 特变电工股份有限公司 | Ultra-clean EP rubbers cable insulating material of 35kV and preparation method thereof |
| CN109957179B (en) * | 2017-12-22 | 2021-12-07 | 特变电工股份有限公司 | 35kV ultra-clean ethylene propylene rubber cable insulating material and preparation method thereof |
| CN108841089A (en) * | 2018-07-06 | 2018-11-20 | 江苏上上电缆集团有限公司 | Ethyl-propylene insulating materials and preparation method thereof are pressed in a kind of 35kV environment-friendly type |
| CN111410797A (en) * | 2020-05-26 | 2020-07-14 | 远东电缆有限公司 | High-performance medium-voltage ethylene-propylene insulating material with voltage of 35kV or below for wind power |
| CN112226000A (en) * | 2020-09-14 | 2021-01-15 | 江苏上上电缆集团有限公司 | Special medium-voltage flexible cable rubber insulation material for rail transit and preparation method and application thereof |
| CN115926327A (en) * | 2022-05-27 | 2023-04-07 | 江苏上上电缆集团新材料有限公司 | Low-temperature-resistant high-strength high-electrical-property thermosetting insulating material and preparation method thereof |
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Application publication date: 20161221 |