CN101817950B - Screen material for 35kV grade high/medium voltage crosslinked cable conductor layer and preparation method thereof - Google Patents
Screen material for 35kV grade high/medium voltage crosslinked cable conductor layer and preparation method thereof Download PDFInfo
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- CN101817950B CN101817950B CN2010101652038A CN201010165203A CN101817950B CN 101817950 B CN101817950 B CN 101817950B CN 2010101652038 A CN2010101652038 A CN 2010101652038A CN 201010165203 A CN201010165203 A CN 201010165203A CN 101817950 B CN101817950 B CN 101817950B
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Abstract
The invention discloses a screen material for a 35kV grade high/medium voltage crosslinked cable conductor layer, which is characterized by comprising the following components in parts by weight: 40-65 parts of EVA (ethylene-vinlacetate copolyme), 5-15 parts of PE (polyethylene), 30-50 parts of conductive black, 1-5 parts of dispersing agent, 0.3-1.5 parts of antioxygen, 4-8 parts of white oil, 0.3-5 parts of lubricant and 0.7-2.5 parts of cross-linking agent. The dispersing agent is added to the screen material, which enables the distribution of the conductive black to be extremely even; the torque of an extruder is very balanced when being used, the fluctuation of the wire diameter of the cable is very small, and the pre-crosslinking phenomenon is not easy to happen. The screen material can be unremittingly extruded for a long time, which is extremely beneficial to manufacturing big-length fixed-length cables and can improve the yield. The cross-linking agent in the crosslinked screen material is a tasteless peroxide, which is more beneficial to environmental protection.
Description
Technical field
The present invention relates to a kind of 35KV level mesohigh crosslinked cable conductor layer with shielding material, its preparation method and application.
Background technology
Crosslinked cable is the power cable that must get up in develop rapidly in recent ten years; The raising of constantly bringing forth new ideas along with the cross-linked cable insulating material; The crosslinked cable manufacturing of domestic each big cable factory can be from 10,000 volts of voltage ranges that developed into 110 kilovolts; And also improving constantly, wherein the turnout of medium and high voltage cable also has very large raising.From 1000 kilometers to 2009 broken 100,000 kilometers of less thaies in 2000, the quantity development rapidly.
2008, Chinese Government dropped into the pulling domestic demand of four trillion yuan, wherein was to be used for urban and rural power grids construction and electric network reconstruction more than 40%.The demand of crosslinked cable is very big.Expect 2015 and can reach 200,000 kilometers, this wherein the domestic part of shielding material producer production is also arranged, but performance and technic index are unstable, especially the voltage level major part is to rely on import more than 35 kilovolts, cost is higher.
Precrosslink when extruding for a long time, takes place in shielding material of the prior art easily.The shielding material that precrosslink takes place can't be extruded smoothly, and causing can't long-time continuous production, influence the production of cable, causes the yield rate of cable production low, has only 80%-85%.Therefore, shielding material of the prior art can only be proportioning, production respectively more several times.
Summary of the invention
The objective of the invention is in order to overcome deficiency of the prior art, provide the finely dispersed 35KV level of a kind of graphitized carbon black mesohigh crosslinked cable conductor layer with the shielding material.
For realizing above purpose, the present invention realizes through following technical scheme:
35KV level mesohigh crosslinked cable conductor layer is characterized in that with the shielding material, comprises following component: EVA 40～65 according to parts by weight; PE 5～15; Graphitized carbon black 30～50; Dispersion agent 1～5; Oxidation inhibitor 0.3～1.5; White oil 4～8; Lubricant 0.3～5; Linking agent 0.7～2.5.
Add linking agent among the present invention, can improve dispersity of carbon black and homogeneity in the rubber unvulcanizate.
Preferably, said EVA employing VA content is 16%～20%.
Preferably, said EVA melting index is 2～3.
Preferably, said PE melting index is 2～3.
Preferably, said graphitized carbon black DBP value is 100～145.The too small volume resistance that can influence shielded cable material of DBP value, the smoothness of crossing the affects shielded cable material causes precrosslink.
Preferably, said linking agent comprises BIPB or DCP.Linking agent is a tasteless peroxide.Be more conducive to environmental protection.
More preferably be also to comprise additional crosslinker.Additional crosslinker is selected from TAIC; The mass ratio of BIPB or DCP and TAIC is 0.8～1.2: 1.Under satisfied heat extension and the requirement of permanent modification, can suitably reduce BIPB or DCP dosage of crosslinking agent, improve the flowability of sizing material in extrusion.
Preferably, said lubricant is selected from one or more in Chinese wax, Zinic stearas, Triple Pressed Stearic Acid and the polyethylene wax.
Preferably, said lubricant is selected from Chinese wax 0.2～1, Zinic stearas 1～3, Triple Pressed Stearic Acid 0.3～1 and the polyethylene wax 0.3～1 one or more according to parts by weight.
Preferably, said dispersion agent is selected from the easy plain T-83 of glue.
Aforesaid 35KV level mesohigh crosslinked cable conductor layer is characterized in that with the preparation method of shielding material, adopts Banbury mixer with EVA, PE and graphitized carbon black; Dispersion agent, oxidation inhibitor, white oil, mixing even; Throw in lubricant before the discharging again,, get into the high speed kneader after the granulation then through the single screw extrusion machine extruding pelletization; Spray linking agent by proportioning, mixed at high speed, cooling forms.
The invention has the beneficial effects as follows:
1, be added with dispersion agent in the shielding material among the present invention, it is very even that graphitized carbon black is disperseed, and the torque of forcing machine is in admirable proportion during use, and cable directly fluctuates very little, and the precrosslink phenomenon is difficult for taking place.Can uninterruptedly extrude for a long time, very beneficial to making length fixed length cable, can improve yield rate.
2, linking agent is a tasteless peroxide in the cross-linked shielding material of the present invention, is more conducive to environmental protection.
Embodiment
Below in conjunction with embodiment the present invention is done further description:
Composition weight umber among each embodiment is as shown in the table:
Among the embodiment 1-6, the EVA that uses is EVA 18-3, and its VA content is between 16%～20%, and melting index is 2～3.
Among the embodiment 1-6, PE is Q200.
Among the embodiment 1-6, graphitized carbon black is a graphitized carbon black 6900, and its DBP value is 100～145.
The oxidation inhibitor that embodiment 1-3 uses is oxidation inhibitor 101; What embodiment 4 used is 0.3 weight part oxidation inhibitor 101 and 0.3 weight part antioxidant 300; The oxidation inhibitor that embodiment 5-8 uses is antioxidant 300.
The linking agent that embodiment 1-2 uses is BIPB; The BIPB and the TAIC of the same parts by weight that embodiment 3-4 uses; Embodiment 5,6 operating weight ratios are 1.5: 1 TAIC and BIPB; Embodiment 7-8 operating weight ratio is 1.2: 1 DCP and BIPB.
Dispersion agent is that glue is prone to plain T-83.
EVA, PE and graphitized carbon black, dispersion agent, oxidation inhibitor, white oil is mixing evenly, melting temperature: 125～160 degree, mixing time: 6～10 minutes, the banburying discharging added lubricant in preceding 1 minute; Through the single screw extrusion machine extruding pelletization, the length-to-diameter ratio of single screw rod is 1: 16 after the banburying discharging, and each interval temperature is 120 ℃, 135 ℃; 140 ℃, 135 ℃, get into the high speed kneader after the granulation; 2000-3000 rev/min of kneader rotating speed sprays linking agent, mixed at high speed by proportioning; The temperature of mixed at high speed is controlled at 50 ℃～70 ℃, mixing time 90 seconds, and cooling back packing forms.
Shielding material among the present invention can be used as the shielding of 35KV level mesohigh crosslinked cable conductor layer.
Experimental data is as shown in the table among each embodiment:
Shielding material among the present invention is difficult for taking place precrosslink, therefore extrudes production continuously for a long time behind the proportioning raw material in enormous quantities, and when producing cable, the yield rate of cable can reach more than 95%.
Embodiment among the present invention only is used for that the present invention will be described, does not constitute the restriction to the claim scope, and other substituting of being equal in fact that those skilled in that art can expect are all in protection domain of the present invention.
Claims (9)
1.35KV level mesohigh crosslinked cable conductor layer is characterized in that with the shielding material, comprises following component according to parts by weight:
EVA 40～65; PE 5～15; Graphitized carbon black 30～50; Dispersion agent 1～5; Oxidation inhibitor 0.3～1.5; White oil 4～8; Lubricant 0.3～5; Linking agent 0.7～2.5; Said dispersion agent is selected from glue and is prone to plain T-83; Said lubricant is selected from Chinese wax 0.2～1, Zinic stearas 1～3, Triple Pressed Stearic Acid 0.3～1 and the polyethylene wax 0.3～1 one or more according to parts by weight.
2. 35KV level mesohigh crosslinked cable conductor layer according to claim 1 is characterized in that with the shielding material VA content of said EVA is 16%～20%.
3. 35KV level mesohigh crosslinked cable conductor layer according to claim 2 is characterized in that with the shielding material said EVA melting index is 2～3.
4. 35KV level mesohigh crosslinked cable conductor layer according to claim 1 is characterized in that with the shielding material said PE melting index is 2～3.
5. 35KV level mesohigh crosslinked cable conductor layer according to claim 1 is characterized in that with the shielding material said graphitized carbon black DBP value is 100～145.
6. 35KV level mesohigh crosslinked cable conductor layer shielding material according to claim 1 is characterized in that said linking agent is selected from BIPB or DCP.
7. 35KV level mesohigh crosslinked cable conductor layer according to claim 6 is characterized in that with the shielding material, also comprises additional crosslinker.
8. 35KV level mesohigh crosslinked cable conductor layer according to claim 6 is characterized in that with the shielding material additional crosslinker is selected from TAIC; The mass ratio of BIPB or DCP and TAIC is 0.8～1.2: 1.
9. the described 35KV level of the arbitrary claim of claim 1 to 8 mesohigh crosslinked cable conductor layer is characterized in that with the preparation method of shielding material, adopts Banbury mixer with EVA, PE and graphitized carbon black, dispersion agent; Oxidation inhibitor, white oil, mixing even; Before the Banbury mixer discharging, throw in lubricant,, get into the high speed kneader after the granulation then through the single screw extrusion machine extruding pelletization; Spray linking agent by proportioning, mixed at high speed, cooling.
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| CN2010101652038A CN101817950B (en) | 2010-04-29 | 2010-04-29 | Screen material for 35kV grade high/medium voltage crosslinked cable conductor layer and preparation method thereof |
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| CN102532635A (en) * | 2010-12-09 | 2012-07-04 | 浙江万马高分子材料股份有限公司 | Ultra-smooth shielding material |
| CN102336947B (en) * | 2011-07-19 | 2013-03-13 | 哈尔滨理工大学 | Preparation method of ultra-smooth semiconductive shielding material for high-voltage crosslinked polyethylene insulated cable |
| CN103030865B (en) * | 2011-10-10 | 2014-11-12 | 中国石油化工股份有限公司 | Cross-linking semiconductive inner shielding cable material for 35KV crosslinked polyethylene cable and preparation method thereof |
| CN102746564B (en) * | 2012-06-04 | 2016-02-24 | 安徽扬天塑业科技有限公司 | Corrosion resistant CABLE MATERIALS of a kind of modified, high temperature resistant and preparation method thereof |
| CN103665529B (en) * | 2012-09-21 | 2016-03-30 | 中国石油化工股份有限公司 | Semiconduction inner shield feed composition and semiconduction inner shield material and method for making thereof and mesolow and 110 kv cables |
| CN105131413B (en) * | 2015-09-01 | 2017-09-12 | 江阴市海江高分子材料有限公司 | High-strength high temperature-resistant silanes crosslinked cable semiconductive shieldin material and preparation method thereof |
| CN105542276A (en) * | 2016-01-05 | 2016-05-04 | 四川金开特种电线电缆有限公司 | Technology for preparing cable material through energy-saving post-absorption method |
| CN106147001A (en) * | 2016-07-22 | 2016-11-23 | 江阴市海江高分子材料有限公司 | A kind of high fluidity Quick cross-linking semiconductive shieldin material and preparation method thereof |
| CN109251398B (en) * | 2018-07-06 | 2021-04-30 | 浙江万马高分子材料有限公司 | Semi-conductive shielding material for insulation and preparation method thereof |
| CN111303526A (en) * | 2020-04-02 | 2020-06-19 | 成都鑫成鹏高分子科技股份有限公司 | Multilayer graphene modified semiconductive shielding material and preparation method thereof |
| WO2023065430A1 (en) * | 2021-10-18 | 2023-04-27 | 深圳供电局有限公司 | High-voltage cable semi-conductive shielding material featuring high-efficiency dispersion of conductive carbon black and preparation method therefor |
| CN114989524B (en) * | 2022-08-01 | 2022-11-08 | 南京中超新材料股份有限公司 | Cross-linked bonding type conductor shielding material and preparation method thereof |
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| CN100546797C (en) * | 2006-09-06 | 2009-10-07 | 中国科学技术大学 | The production method of ultraviolet light cross-linking polyolefin insulation electric wire and cable and ultraviolet light irradiation cross-linking apparatus thereof |
| EP2065900A1 (en) * | 2007-10-23 | 2009-06-03 | Borealis Technology Oy | Semiconductive polymer composition |
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Effective date of registration: 20160322 Address after: 223800 No. 16, Yongkang Road, Suqian economic and Technological Development Zone, Jiangsu Patentee after: JIANGSU KEYUE NEW MATERIAL CO., LTD. Address before: 201617, 10, Lane 605, mayor stone road, Songjiang District lake, Shanghai Patentee before: Shanghai Keyue Macromolecule Materials Co., Ltd. |
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Effective date of registration: 20201124 Address after: No.6, area a, Suicheng town industrial concentration zone, Qingnian East Road, Suining County, Xuzhou City, Jiangsu Province Patentee after: Enleman instrument (Xuzhou) Co., Ltd Address before: 223800 No. 16, Yongkang Road, Suqian economic and Technological Development Zone, Jiangsu Patentee before: JIANGSU KEYUE NEW MATERIAL Co.,Ltd. |
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