CN101701080A - Radiation crosslinking heat-shrinkable semiconductor tube material - Google Patents
Radiation crosslinking heat-shrinkable semiconductor tube material Download PDFInfo
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- CN101701080A CN101701080A CN200910183369A CN200910183369A CN101701080A CN 101701080 A CN101701080 A CN 101701080A CN 200910183369 A CN200910183369 A CN 200910183369A CN 200910183369 A CN200910183369 A CN 200910183369A CN 101701080 A CN101701080 A CN 101701080A
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- tube material
- semiconductor tube
- shrinkable
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Abstract
The invention relates to a radiation crosslinking heat-shrinkable semiconductor tube material which is characterized in that the material is prepared by 80-120 parts by weight of polyethylene, 20-60 parts by weight of ethylene-vinyl acetate, 0.05-1 part by weight of antioxidant, 5-50 parts by weight of conductive carbon black and 0.5-3 parts by weight of lubricant. The volume resistivity of the radiation crosslinking heat-shrinkable semiconductor tube material is 102-104, thereby being applicable to a power system with 10Kv voltage level and simultaneously being even more applicable to the power system with the 35Kv voltage level as the material for balancing the electric field strength.
Description
Technical field
The invention belongs to transmitting line insulation protecting device technical field, be specifically related to a kind of radiation crosslinking heat-shrinkable semiconductor tube material.
Background technology
In the position of the terminal coupling head of cable intermediate joint and cable, because screen layer cuts off and the insulation cut-off part of cable end piece, serious distortion takes place in electric field distribution, is extremely uneven distribution.This electric field distortion is the biggest obstacle of cable accessory safe operation.Radiation crosslinking heat-shrinkable semiconductor tube is to connect in the middle of the power cable with cross-linked polyethylene insulation that uses in the power system and the important component part of terminal fitting, and its effect is a compensating cable insulation electric field outward.The volume resistance of the radiation crosslinking heat-shrinkable semiconductor tube of present domestic use is 10
5To 10
7Between, reach 10 at the volume resistance of American-European developed country half conduit
2To 10
4Between.
Summary of the invention
The object of the present invention is to provide a kind of volume resistance can reach 10
2To 10
4Between radiation crosslinking heat-shrinkable semiconductor tube material.
The object of the present invention is achieved like this: a kind of radiation crosslinking heat-shrinkable semiconductor tube material, and it is by 80～120 parts of polyethylene, 20～60 parts of ethene one vinegar ester vinyl acetate (EVA), 0.05～1 part in oxidation inhibitor, 5～50 parts of graphitized carbon blacks, lubricant is prepared from for 0.5～3 part, in weight part.
Described polyethylene is preferably 90 parts, and described EVA is preferably 30 parts, and described oxidation inhibitor is preferably 0.5 part, and described graphitized carbon black is preferably 28 parts, and described lubricant is preferably 1 part, in weight part.
Described oxidation inhibitor is polynary Hinered phenols antioxidant, as antioxidant 1010 etc.; Described lubricant is any lubricant for external use.
Described graphitized carbon black is a conductive agglomerate.
The preparation method of radiation crosslinking heat-shrinkable semiconductor tube material of the present invention is: at first graphitized carbon black is made conductive agglomerate, with polyethylene and EVA blend is matrix, after adding remaining ingredient, according to ordinary method Banbury mixer granulation, with carrying out radiation crosslinking after the extruder for shaping, again through obtaining after the expansion.
Principle of work of the present invention is as follows:
Graphitized carbon black to the influence of heat-shrinkable semiconductor tube material (high polymer material) volume specific resistance is: when the concentration of graphitized carbon black was low, the room temperature resistivity of material was higher, and along with the increase of graphitized carbon black content, the room temperature resistivity of material reduces gradually; When graphitized carbon black content was increased to some threshold values, room temperature resistivity sharply descended, and the amplitude of variation reaches several magnitude, after threshold value, along with the continuation increase room temperature resistivity variation of graphitized carbon black content is mild, the trend that is tending towards certain value was arranged;
Graphitized carbon black can be explained with tunnel theory the influence of heat-shrinkable semiconductor tube material (high polymer material) room temperature resistivity: with the crystallinity high polymers of fusing with cool off after conducting particles mixes, conducting particles and crystallizing field are inconsistent, and conducting particles will be squeezed the unformed area of crystallizing range; The resistance of polymkeric substance/carbon black composite material system mainly is to be determined at the tunnel current between conducting particles by electronics: when the gap was very big, resistance was very big; When if the gap has only several nanometers, just tunnel current can flow by the isolator between conducting particles, this moment, conductive path formed, and resistivity descends rapidly; Along with the further increase of content of carbon black, the particle of increase enters conductive network, and the room temperature resistivity of material reduces greatly; When the carbon black degree of depth reached higher, the distance between carbon black aggregate further reduced, and the part aggregate is in contact with one another, and conductive path instead of part electron tunneling effect conduction is tending towards certain value at last.
Beneficial effect of the present invention is:
1, the resistance volume of radiation crosslinking heat-shrinkable semiconductor tube material of the present invention is 10
2To 10
4Between, be not only applicable in the power system of 10Kv voltage range, more be applicable to simultaneously in the power system of 35Kv voltage range as balanced strength of electric field material;
2, the present invention is by giving material suitable electric parameter, utilizes the semiconduction heat-shrinkable tube to reach the principle of control electric field distribution, improves the electric field distribution at these positions, makes electric field distribution be formed centrally concentric(al) circles in evenly and with cable conductor being.
Embodiment
Mode below by embodiment is elaborated to technical solution of the present invention, but protection scope of the present invention is not limited to described embodiment.
Embodiment 1
A kind of radiation crosslinking heat-shrinkable semiconductor tube material, it is by 90 parts of polyethylene, EVA30 part, 0.5 part of polynary Hinered phenols antioxidant, 28 parts of graphitized carbon blacks, lubricant for external use is prepared from for 1 part, in weight part.
Concrete preparation method is: at first graphitized carbon black being made conductive agglomerate, is matrix with polyethylene and EVA blend, behind the interpolation remaining ingredient, according to ordinary method Banbury mixer granulation, with carrying out radiation crosslinking after the extruder for shaping, obtains after the expansion then.
Embodiment 2～4
A kind of radiation crosslinking heat-shrinkable semiconductor tube material, its component and preparation method are with embodiment 1, and difference is the consumption difference of each component, and the consumption of each component sees Table 1.
The consumption of each component among table 1 embodiment 2～4
| Embodiment | ??2 | ??3 | ??4 |
| Polyethylene | ??80 | ??100 | ??120 |
| ??EVA | ??20 | ??40 | ??60 |
| Antioxidant 1010 | ??0.05 | ??0.1 | ??1 |
| Graphitized carbon black | ??5 | ??10 | ??50 |
| Lubricant for external use | ??0.5 | ??2 | ??3 |
The consumption of each component is in weight part.
Claims (4)
1. radiation crosslinking heat-shrinkable semiconductor tube material, it is characterized in that: it is by 80～120 parts of polyethylene, 20～60 parts of ethene-vinegar ester vinyl acetate, 0.05～1 part in oxidation inhibitor, 5～50 parts of graphitized carbon blacks, lubricant is prepared from for 0.5～3 part, in weight part.
2. radiation crosslinking heat-shrinkable semiconductor tube material according to claim 1 is characterized in that: described polyethylene is 90 parts, and described EVA is 30 parts, and described oxidation inhibitor is 0.5 part, and described graphitized carbon black is 28 parts, and described lubricant is 1 part, in weight part.
3. radiation crosslinking heat-shrinkable semiconductor tube material according to claim 1 and 2 is characterized in that: described oxidation inhibitor is polynary Hinered phenols antioxidant.
4. radiation crosslinking heat-shrinkable semiconductor tube material according to claim 1 and 2 is characterized in that: described graphitized carbon black is a conductive agglomerate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910183369A CN101701080A (en) | 2009-09-18 | 2009-09-18 | Radiation crosslinking heat-shrinkable semiconductor tube material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910183369A CN101701080A (en) | 2009-09-18 | 2009-09-18 | Radiation crosslinking heat-shrinkable semiconductor tube material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101701080A true CN101701080A (en) | 2010-05-05 |
Family
ID=42156009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910183369A Pending CN101701080A (en) | 2009-09-18 | 2009-09-18 | Radiation crosslinking heat-shrinkable semiconductor tube material |
Country Status (1)
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|---|---|
| CN (1) | CN101701080A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336947A (en) * | 2011-07-19 | 2012-02-01 | 哈尔滨理工大学 | Preparation method of ultra-smooth semiconductive shielding material for high-voltage crosslinked polyethylene insulated cable |
| CN103602275A (en) * | 2013-10-28 | 2014-02-26 | 江苏达胜热缩材料有限公司 | Novel two-tier structured stator for pipeline-anticorrosion heat-shrinkable tape |
| CN104031312A (en) * | 2014-06-17 | 2014-09-10 | 东莞市德诚塑化科技有限公司 | Conductive polyethylene and preparation method thereof |
| CN104403307A (en) * | 2014-12-15 | 2015-03-11 | 苏州宽温电子科技有限公司 | Conductive engineering plastic |
| CN104505803A (en) * | 2014-12-18 | 2015-04-08 | 麦家星 | Manufacturing method for 220kV and less high-voltage thermal shrinkable cable accessory |
| CN106633355A (en) * | 2016-12-28 | 2017-05-10 | 上海长园电子材料有限公司 | Shielding double-layer heat shrinkable casing pipe |
-
2009
- 2009-09-18 CN CN200910183369A patent/CN101701080A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336947A (en) * | 2011-07-19 | 2012-02-01 | 哈尔滨理工大学 | Preparation method of ultra-smooth semiconductive shielding material for high-voltage crosslinked polyethylene insulated cable |
| 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 |
| CN103602275A (en) * | 2013-10-28 | 2014-02-26 | 江苏达胜热缩材料有限公司 | Novel two-tier structured stator for pipeline-anticorrosion heat-shrinkable tape |
| CN103602275B (en) * | 2013-10-28 | 2015-05-13 | 江苏达胜热缩材料有限公司 | Novel two-tier structured stator for pipeline-anticorrosion heat-shrinkable tape |
| CN104031312A (en) * | 2014-06-17 | 2014-09-10 | 东莞市德诚塑化科技有限公司 | Conductive polyethylene and preparation method thereof |
| CN104403307A (en) * | 2014-12-15 | 2015-03-11 | 苏州宽温电子科技有限公司 | Conductive engineering plastic |
| CN104505803A (en) * | 2014-12-18 | 2015-04-08 | 麦家星 | Manufacturing method for 220kV and less high-voltage thermal shrinkable cable accessory |
| CN106633355A (en) * | 2016-12-28 | 2017-05-10 | 上海长园电子材料有限公司 | Shielding double-layer heat shrinkable casing pipe |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100505 |