CN103289214A - Ethylene propylene terpolymer insulating material for high-voltage direct-current cable accessory and preparation method thereof - Google Patents
Ethylene propylene terpolymer insulating material for high-voltage direct-current cable accessory and preparation method thereof Download PDFInfo
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- CN103289214A CN103289214A CN2013102613405A CN201310261340A CN103289214A CN 103289214 A CN103289214 A CN 103289214A CN 2013102613405 A CN2013102613405 A CN 2013102613405A CN 201310261340 A CN201310261340 A CN 201310261340A CN 103289214 A CN103289214 A CN 103289214A
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Abstract
The invention relates to an ethylene propylene terpolymer insulating material for a high-voltage direct-current cable accessory and a preparation method thereof. The preparation method comprises the following steps: firstly, mixing small amount of ethylene propylene terpolymer with 0.5-10 parts of inorganic nanopowder by a blending method; preparing nano rubber master batch in an internal mixer under the conditions of high temperature and high shear force; then, placing the prepared nano rubber master batch, and rubber, 5-10 parts of operating oil, 30-70 parts of reinforcing filler, 1-2 parts of stearic acid, 1-2 parts of a coupling reagent and 1-2 parts of an antiaging agent based on 100 parts of ethylene propylene terpolymer in the internal mixer to mix; and then, mixing with a vulcanization system consisting of 0.5-5 parts of sulphur and 0.5-5 parts of an accelerator on an open mill to obtain the ethylene propylene terpolymer insulating material for a high voltage direct current cable accessory. The product provided by the invention has enough mechanical performance and excellent electric performance and is suitable for high-voltage direct-current cable accessories.
Description
Technical field
The present invention relates to a kind of insulating material and preparation method thereof, particularly disclose a kind of high voltage direct current cable fittings with insulating material and preparation method thereof, belong to the insulating material technical field, be applicable to the high voltage direct current cable fittings.
Background technology
Because the DC power transmission line loss is little, transmission distance is unrestricted, and transmission capacity is big, can realize the asynchronous advantage such as interconnected of electrical network, will obtain more and more widely application at power transmission network.Yet high voltage direct current transmission is promoted the use of always, this be because the D.C. isolation cable in operational process, accumulation space electric charge very easily in the cable insulation, cause the distortion of insulation layer internal field, reach 7 ~ 8 times of works better field intensity, may cause the puncture of insulating.
The exploitation of dc high-voltage cable fittings is more late than direct current cables, be because cable accessory is subjected to the double influence of volts DS and temperature, electric field distribution is more complicated, how to solve the accumulation of space electric charge in the direct current cables annex, is the difficult point of exploitation direct current cables annex.Terpolymer EP rubber is as the insulation material, because its excellent electric performance and mechanical property, be widely used in the ac cable field of accessories, as direct current cables annex insulating material, correlation test shows that terpolymer EP rubber compares with silicon rubber, has more advantage aspect the space charge improving.Nano material is because its distinctive surface property and small-size effect, obtained widespread use in a lot of fields, has the incomparable performance of common material, existing a lot of both at home and abroad scholars improve the material internal distribution of space charges by add nano material in crosslinked polyethylene, and have obtained certain achievement.
Summary of the invention
The objective of the invention is to solve the accumulation of space electric charge in the direct current cables annex, a kind of high voltage direct current cable fittings terpolymer EP rubber insulating material and preparation method thereof is disclosed, on the basis of the original superior electrical performance of polymkeric substance and mechanical property, improve its mechanical property, improve the volume specific resistance of material, minimizing insulation internal space electric charge gathers, thereby improves the distribution of its internal electric field.
The present invention is achieved in that a kind of high voltage direct current cable fittings terpolymer EP rubber insulating material, it is characterized in that component and content thereof that described terpolymer EP rubber insulating material comprises are: terpolymer EP rubber altogether 100 weight parts as the inorganic nano powder of base-material, 0.5 ~ 10 weight part, the process oil of 5 ~ 10 weight parts, the reinforced filling of 30 ~ 70 weight parts, the stearic acid of 1 ~ 2 weight part, the coupling agent of 1 ~ 2 weight part, the anti-aging agent of 1 ~ 2 weight part, and the promotor of the sulphur of 0.5 ~ 5 weight part and 0.5 ~ 5 weight part.Described inorganic nano powder is a kind of in magnesium oxide, zinc oxide, the aluminum oxide, described process oil is naphthene base crude oil, described reinforced filling is one or both in calcined kaolin and the gas-phase silica, described coupling agent is silane coupling agent, described anti-aging agent is the benzimidazole type anti-aging agent, described vulcanization system is made up of sulphur and promotor, and wherein sulphur is insoluble sulfur, and promotor is one or more of CZ, BZ, DM, TMTD.。
Described terpolymer EP rubber is formed first kind of rubber base-material by in following three kinds of rubber base-materials one or more: ethylene content is that 40 ~ 70%, ENB content is 5 ~ 15%, mooney viscosity ML(1+4) 125 ℃ be 20 ~ 40; Second kind of rubber base-material: ethylene content is that 50 ~ 80%, ENB content is 5 ~ 10%, mooney viscosity ML(1+4) 125 ℃ be 10 ~ 30; The third rubber base-material: ethylene content is that 40 ~ 60%, ENB content is 5 ~ 10%.
Described inorganic nano powder, primary partical particle diameter are 20 ~ 40nm, and specific surface area is〉80m
2/ g.Described naphthene base crude oil, relative density 0.8 ~ 1.0, molecular weight 500 ~ 800, viscosity-gravity constant 0.75 ~ 0.85.Described reinforced filling is one or both in calcined kaolin and the gas-phase silica, calcined kaolin average particle size particle size 1.4 um wherein, oil number 45-55, luminance brightness 90-92, free moisture content＜0.5%, 325 screen residue content＜0.03%; Gas-phase silica specific surface area 170 ± 20 m
2/ g, water content (105 ℃, 2 hours)＜0.5 g/l, pH3.7-4.7, SiO2 content〉99.8%.Described silane coupling agent, light yellow liquid, relative density 1.0 ~ 1.2, specific refractory power 1.2 ~ 1.5, boiling point〉200 ℃, sulphur content〉20%.Described benzimidazole type anti-aging agent is 2-thiol group benzimidazolyl, and faint yellow or white powder, relative density 1.2 ~ 1.5 nontoxic, has bitter taste, fusing point〉200 ℃.
The described high voltage direct current cable fittings preparation method of terpolymer EP rubber insulating material, it is characterized in that: at first with the nano inorganic powder of a spot of terpolymer EP rubber and 0.5 ~ 10 weight part, pass through blending method, mixing outlet temperature is 130 ℃, the rotor maximum speed〉80 rev/mins, in Banbury mixer, make the nanometer rubber master batch under the high temperature high shear force, again the above-mentioned nanometer rubber master batch that makes and terpolymer EP rubber are amounted to 100 parts by weight of rubber, the process oil of 5 ~ 10 weight parts, the reinforced filling of 30 ~ 70 weight parts, the stearic acid of 1 ~ 2 weight part, it is mixing that the anti-aging agent of the coupling agent of 1 ~ 2 weight part and 1 ~ 2 weight part is put into Banbury mixer, mixing outlet temperature is 130 ℃, and then with the promotor of sulphur and 0.5 ~ 5 weight part of 0.5 ~ 5 weight part, after mixing in the mill, obtain high voltage direct current cable fittings terpolymer EP rubber insulating material.
The invention has the beneficial effects as follows: the present invention is in terpolymer EP rubber, adds the inorganic nano powder, and prepares high voltage direct current cable fittings terpolymer EP rubber insulating material by the method for mechanical blending.Do not mix the terpolymer EP rubber of any inorganic nano powder under the electric field of 30kV/mm, and there is tangible space charge phenomenon insulation inside, and along with the increase of extra electric field, the insulation volume inside quantity of electric charge increases gradually.And the product of the present invention of interpolation inorganic nano powder is on the basis of the original superior electrical performance of polymkeric substance and mechanical property, improve its mechanical property, improved the volume specific resistance of material, complex media insulation inside does not have the accumulation phenomena of space charge, thereby has improved the distribution of internal electric field.
Embodiment
The present invention is a kind of high voltage direct current cable fittings terpolymer EP rubber insulating material, the component that it comprises and content thereof are: terpolymer EP rubber altogether 100 weight parts as the inorganic nano powder of base-material, 0.5 ~ 10 weight part, the process oil of 5 ~ 10 weight parts, the reinforced filling of 30 ~ 70 weight parts, the stearic acid of 1 ~ 2 weight part, the coupling agent of 1 ~ 2 weight part, the anti-aging agent of 1 ~ 2 weight part, and the promotor of the sulphur of 0.5 ~ 5 weight part and 0.5 ~ 5 weight part.
The inorganic nano powder is a kind of in magnesium oxide, zinc oxide, the aluminum oxide, and inorganic nano powder primary partical particle diameter is 20 ~ 40nm, and specific surface area is〉80m
2/ g.Process oil is naphthene base crude oil, relative density 0.8 ~ 1.0, molecular weight 500 ~ 800, viscosity-gravity constant 0.75 ~ 0.85.Reinforced filling is one or both in calcined kaolin and the gas-phase silica, calcined kaolin average particle size particle size 1.4 um wherein, oil number 45-55, luminance brightness 90-92, free moisture content＜0.5%, 325 screen residue content＜0.03%; Gas-phase silica specific surface area 170 ± 20 m
2/ g, water content (105 ℃, 2 hours)＜0.5 g/l, pH3.7-4.7, SiO2 content〉99.8%.。Coupling agent is silane coupling agent, light yellow liquid, relative density 1.0 ~ 1.2, specific refractory power 1.2 ~ 1.5, boiling point〉200 ℃, sulphur content〉20%.Anti-aging agent is the benzimidazole type anti-aging agent, adopts 2-thiol group benzimidazolyl, and faint yellow or white powder, relative density 1.2 ~ 1.5 nontoxic, has bitter taste, fusing point〉200 ℃.Vulcanization system is made up of sulphur and promotor, and wherein sulphur is insoluble sulfur, and promotor is one or more of CZ, BZ, DM, TMTD.
Terpolymer EP rubber is formed first kind of rubber base-material by in following three kinds of rubber base-materials one or more: ethylene content is that 40 ~ 70%, ENB content is 5 ~ 15%, mooney viscosity ML(1+4) 125 ℃ be 20 ~ 40; Second kind of rubber base-material: ethylene content is that 50 ~ 80%, ENB content is 5 ~ 10%, mooney viscosity ML(1+4) 125 ℃ be 10 ~ 30; The third rubber base-material: ethylene content is that 40 ~ 60%, ENB content is 5 ~ 10%.
High voltage direct current cable fittings of the present invention is with the preparation method of terpolymer EP rubber insulating material: at first with the inorganic nano powder of a spot of terpolymer EP rubber and 0.5 ~ 10 weight part, pass through blending method, mixing outlet temperature is 130 ℃, the rotor maximum speed〉80 rev/mins, in Banbury mixer, make the nanometer rubber master batch under the high temperature high shear force, again the above-mentioned nanometer rubber master batch that makes and terpolymer EP rubber are amounted to 100 parts by weight of rubber, the process oil of 5 ~ 10 weight parts, the reinforced filling of 30 ~ 70 weight parts, the stearic acid of 1 ~ 2 weight part, it is mixing that the anti-aging agent of the coupling agent of 1 ~ 2 weight part and 1 ~ 2 weight part is put into Banbury mixer, mixing outlet temperature is 130 ℃, and then with the promotor of sulphur and 0.5 ~ 5 weight part of 0.5 ~ 5 weight part, after mixing in the mill, obtain high voltage direct current cable fittings terpolymer EP rubber insulating material.
Embodiment 1:
High voltage direct current cable fittings of the present invention with component and the content thereof of terpolymer EP rubber insulating material is: terpolymer EP rubber altogether 100 weight parts as the inorganic nano powder of base-material, 0.5 weight part, the process oil of 10 weight parts, the reinforced filling of 30 weight parts, the stearic acid of 1 weight part, the coupling agent of 1 weight part, the anti-aging agent of 2 weight parts, and the promotor of the sulphur of 0.5 weight part and 5 weight parts.
Other are with aforementioned.
Embodiment 2:
High voltage direct current cable fittings of the present invention with component and the content thereof of terpolymer EP rubber insulating material is: terpolymer EP rubber altogether 100 weight parts as the inorganic nano powder of base-material, 10 weight parts, the process oil of 5 weight parts, the reinforced filling of 70 weight parts, the stearic acid of 2 weight parts, the coupling agent of 2 weight parts, the anti-aging agent of 1 weight part, and the promotor of the sulphur of 5 weight parts and 0.5 weight part.
Other are with embodiment 1.
Embodiment 3:
High voltage direct current cable fittings of the present invention with component and the content thereof of terpolymer EP rubber insulating material is: terpolymer EP rubber altogether 100 weight parts as the inorganic nano powder of base-material, 5 weight parts, the process oil of 7.5 weight parts, the reinforced filling of 50 weight parts, the stearic acid of 1.5 weight parts, the coupling agent of 1.5 weight parts, the anti-aging agent of 1.5 weight parts, and the promotor of the sulphur of 3 weight parts and 3 weight parts.
Other are with embodiment 1.
Claims (8)
1. high voltage direct current cable fittings terpolymer EP rubber insulating material, it is characterized in that component and content thereof that described terpolymer EP rubber insulating material comprises are: terpolymer EP rubber altogether 100 weight parts as the inorganic nano powder of base-material, 0.5 ~ 10 weight part, the process oil of 5 ~ 10 weight parts, the reinforced filling of 30 ~ 70 weight parts, the stearic acid of 1 ~ 2 weight part, the coupling agent of 1 ~ 2 weight part, the anti-aging agent of 1 ~ 2 weight part, and the promotor of the sulphur of 0.5 ~ 5 weight part and 0.5 ~ 5 weight part; Described inorganic nano powder is a kind of in magnesium oxide, zinc oxide, the aluminum oxide, described process oil is naphthene base crude oil, described reinforced filling is one or both in calcined kaolin and the gas-phase silica, described coupling agent is silane coupling agent, described anti-aging agent is the benzimidazole type anti-aging agent, described vulcanization system is made up of sulphur and promotor, and wherein sulphur is insoluble sulfur, and promotor is one or more of CZ, BZ, DM, TMTD.
2. according to the described high voltage direct current cable fittings terpolymer EP rubber insulating material of claim 1, it is characterized in that: described terpolymer EP rubber is made up of in following three kinds of rubber base-materials one or more, first kind of rubber base-material wherein: ethylene content is 40 ~ 70%, ENB content is 5 ~ 15%, mooney viscosity ML(1+4) 125 ℃ be 20 ~ 40; Second kind of rubber base-material: ethylene content is that 50 ~ 80%, ENB content is 5 ~ 10%, mooney viscosity ML(1+4) 125 ℃ be 10 ~ 30; The third rubber base-material: ethylene content is that 40 ~ 60%, ENB content is 5 ~ 10%.
3. according to the described high voltage direct current cable fittings terpolymer EP rubber insulating material of claim 1, it is characterized in that: described inorganic nano powder primary partical particle diameter is 20 ~ 40nm, and specific surface area is〉80m
2/ g.
4. according to the described high voltage direct current cable fittings terpolymer EP rubber insulating material of claim 1, it is characterized in that: described naphthene base crude oil, relative density 0.8 ~ 1.0, molecular weight 500 ~ 800, viscosity-gravity constant 0.75 ~ 0.85.
5. according to the described high voltage direct current cable fittings terpolymer EP rubber insulating material of claim 1, it is characterized in that: described reinforced filling is one or both in calcined kaolin and the gas-phase silica, calcined kaolin average particle size particle size 1.4 um wherein, oil number 45-55, luminance brightness 90-92, free moisture content＜0.5%, 325 screen residue content＜0.03%; Gas-phase silica specific surface area 170 ± 20 m
2/ g, water content (105 ℃, 2 hours)＜0.5 g/l, pH3.7-4.7, SiO2 content〉99.8%.
6. according to the described high voltage direct current cable fittings terpolymer EP rubber insulating material of claim 1, it is characterized in that: described silane coupling agent, light yellow liquid, relative density 1.0 ~ 1.2, specific refractory power 1.2 ~ 1.5, boiling point 200 ℃, sulphur content〉20%.
7. according to the described high voltage direct current cable fittings terpolymer EP rubber insulating material of claim 1, it is characterized in that: described benzimidazole type anti-aging agent is 2-thiol group benzimidazolyl, faint yellow or white powder, relative density 1.2 ~ 1.5, nontoxic, bitter taste is arranged, fusing point〉200 ℃.
In the claim 1～7 any described high voltage direct current cable fittings with the preparation method of terpolymer EP rubber insulating material, it is characterized in that: at first with the inorganic nano powder of a spot of terpolymer EP rubber and 0.5 ~ 10 weight part, pass through blending method, mixing outlet temperature is 130 ℃, the rotor maximum speed〉80 rev/mins, in Banbury mixer, make the nanometer rubber master batch under the high temperature high shear force, again the above-mentioned nanometer rubber master batch that makes and terpolymer EP rubber are amounted to 100 parts by weight of rubber, the process oil of 5 ~ 10 weight parts, the reinforced filling of 30 ~ 70 weight parts, the stearic acid of 1 ~ 2 weight part, it is mixing that the anti-aging agent of the coupling agent of 1 ~ 2 weight part and 1 ~ 2 weight part is put into Banbury mixer, mixing outlet temperature is 130 ℃, and then the vulcanization system of forming with the promotor of the sulphur of 0.5 ~ 5 weight part and 0.5 ~ 5 weight part, after mixing in the mill, obtain high voltage direct current cable fittings terpolymer EP rubber insulating material.
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| CN103497430A (en) * | 2013-10-08 | 2014-01-08 | 江苏省电力公司常州供电公司 | Manufacturing method of ethylene-propylene-diene monomer rubber insulating gloves for hot-line work of 35kV |
| CN103496067A (en) * | 2013-10-08 | 2014-01-08 | 江苏省电力公司常州供电公司 | Manufacturing method of ethylene-propylene-diene monomer (EPDM) rubber insulating glove |
| CN105255022A (en) * | 2015-11-04 | 2016-01-20 | 长园电力技术有限公司 | Semi-conductive ethylene-propylene-diene monomer rubber material for high-voltage direct current cable accessory and preparation method thereof |
| CN103483700B (en) * | 2013-10-08 | 2016-02-03 | 江苏省电力公司常州供电公司 | Terpolymer EP rubber insulating gloves and manufacture method thereof and application |
| CN106436394A (en) * | 2016-09-13 | 2017-02-22 | 宣城市华菱精工科技股份有限公司 | Cold-resistant compensating cable for elevator |
| CN106750853A (en) * | 2016-11-29 | 2017-05-31 | 安徽双诚电线电缆有限公司 | A kind of photovoltaic generation direct current cables insulating materials and preparation method thereof |
| CN106905622A (en) * | 2017-03-24 | 2017-06-30 | 合肥羿振电力设备有限公司 | A kind of high voltage direct current cable material and preparation method thereof |
| CN108028098A (en) * | 2015-08-10 | 2018-05-11 | 住友电气工业株式会社 | The manufacture method of direct current cables, composition and direct current cables |
| CN110066469A (en) * | 2019-04-17 | 2019-07-30 | 东莞市利群榕兴高分子科技有限公司 | A kind of stress ethylene propylene diene monomer (EPDM) material and its preparation process applied to cable accessory |
| CN111253687A (en) * | 2020-03-24 | 2020-06-09 | 新安天玉有机硅有限公司 | Blended rubber of silicon rubber and ethylene propylene diene monomer 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 |
| CN111793159A (en) * | 2020-01-16 | 2020-10-20 | 深圳市沃尔电力技术有限公司 | Production method and processing equipment of high-voltage insulation direct-current cable accessory material |
| CN112250954A (en) * | 2020-10-26 | 2021-01-22 | 长缆电工科技股份有限公司 | Insulating rubber for extra-high voltage direct current cable accessories and preparation method thereof |
| CN113583353A (en) * | 2021-08-30 | 2021-11-02 | 长缆电工科技股份有限公司 | Insulating rubber and preparation method and application thereof |
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| CN103496067A (en) * | 2013-10-08 | 2014-01-08 | 江苏省电力公司常州供电公司 | Manufacturing method of ethylene-propylene-diene monomer (EPDM) rubber insulating glove |
| CN103497430B (en) * | 2013-10-08 | 2015-12-02 | 江苏省电力公司常州供电公司 | The 35kV hot line work manufacture method of terpolymer EP rubber insulating gloves |
| CN103496067B (en) * | 2013-10-08 | 2015-12-09 | 江苏省电力公司常州供电公司 | The manufacture method of ethylene propylene diene rubber insulating glove |
| CN103497430A (en) * | 2013-10-08 | 2014-01-08 | 江苏省电力公司常州供电公司 | Manufacturing method of ethylene-propylene-diene monomer rubber insulating gloves for hot-line work of 35kV |
| CN103483700B (en) * | 2013-10-08 | 2016-02-03 | 江苏省电力公司常州供电公司 | Terpolymer EP rubber insulating gloves and manufacture method thereof and application |
| CN108028098A (en) * | 2015-08-10 | 2018-05-11 | 住友电气工业株式会社 | The manufacture method of direct current cables, composition and direct current cables |
| CN105255022B (en) * | 2015-11-04 | 2018-06-19 | 长园电力技术有限公司 | For the semiconductive ethylene propylene diene monomer (EPDM) material and preparation method of high-voltage direct-current cable accessory |
| CN105255022A (en) * | 2015-11-04 | 2016-01-20 | 长园电力技术有限公司 | Semi-conductive ethylene-propylene-diene monomer rubber material for high-voltage direct current cable accessory and preparation method thereof |
| CN106436394A (en) * | 2016-09-13 | 2017-02-22 | 宣城市华菱精工科技股份有限公司 | Cold-resistant compensating cable for elevator |
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| CN106905622A (en) * | 2017-03-24 | 2017-06-30 | 合肥羿振电力设备有限公司 | A kind of high voltage direct current cable material and preparation method thereof |
| CN110066469A (en) * | 2019-04-17 | 2019-07-30 | 东莞市利群榕兴高分子科技有限公司 | A kind of stress ethylene propylene diene monomer (EPDM) material and its preparation process applied to cable accessory |
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| CN111253687A (en) * | 2020-03-24 | 2020-06-09 | 新安天玉有机硅有限公司 | Blended rubber of silicon rubber and ethylene propylene diene monomer and preparation method thereof |
| CN111253687B (en) * | 2020-03-24 | 2021-04-09 | 山东大学 | Blended rubber of silicon rubber and ethylene propylene diene monomer and preparation method thereof |
| EP4129897A4 (en) * | 2020-03-26 | 2024-04-24 | Nippon Aerosil Co., Ltd. | Insulating filler and production method therefor, insulating material containing said insulating filler and production method therefor |
| 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 |
| CN112250954A (en) * | 2020-10-26 | 2021-01-22 | 长缆电工科技股份有限公司 | Insulating rubber for extra-high voltage direct current cable accessories and preparation method thereof |
| CN113583353A (en) * | 2021-08-30 | 2021-11-02 | 长缆电工科技股份有限公司 | Insulating rubber and preparation method and application thereof |
| CN114835977A (en) * | 2022-04-29 | 2022-08-02 | 国网智能电网研究院有限公司 | Ethylene propylene diene monomer composite material and preparation method thereof |
| CN114835977B (en) * | 2022-04-29 | 2024-02-13 | 国网智能电网研究院有限公司 | Ethylene propylene diene monomer composite material and preparation method thereof |
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Application publication date: 20130911 |