CN101891916A - Peroxide crosslinked type semi-conductive screen material for crosslinked cable conductor - Google Patents
Peroxide crosslinked type semi-conductive screen material for crosslinked cable conductor Download PDFInfo
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- CN101891916A CN101891916A CN 201010217926 CN201010217926A CN101891916A CN 101891916 A CN101891916 A CN 101891916A CN 201010217926 CN201010217926 CN 201010217926 CN 201010217926 A CN201010217926 A CN 201010217926A CN 101891916 A CN101891916 A CN 101891916A
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- linking agent
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- carbon black
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Abstract
The invention discloses a peroxide crosslinked type semi-conductive screen material for a crosslinked cable conductor. The material comprises the following components in percentage by mass: 50 to 60 percent of EVA material, 28 to 38 percent of carbon black, 4 to 8 percent of plasticizer, 1 to 2 percent of crosslinking agent, and 0.1 to 1 percent of antioxidant, wherein the EVA material is polymer of ethylene and vinyl acetate in an adjustable proportion; the crosslinking agent is peroxide; the plasticizer comprises one or a mixture of oil, olefin, stearic acid, zinc stearate and polyethylenewax; and the screen material is prepared by charging and internally mixing the components in the formula in a clean internal mixer, extruding and granulating by an extruder, and adding the crosslinking agent. The semi-conductive screen material obviously improves the electrical performance of the screen material products which are applied to crosslinking polyethylene insulating cable conductors at 35kV or below, and eliminates the scorching phenomenon of the products in the using process.
Description
Technical field
The present invention relates to insulation and conducing composite material technical field, relate in particular to a kind of cross-linking type semiconductive shieldin material that is used for the cross-linked polyethylene insulated cable conductor.
Background technology
In 35KV and following power transmission and distribution system, cross-linked polyethylene insulated cable is widely used in departments such as electric power, building, industrial and mineral, metallurgy, oil, chemical industry, traffic, has substituted the oil-impregnated paper insulation insulated power cable fully and has partly substituted the polyvinyl chloride insulation power cable.But all need conductor and insulation to use the rubber semi-conductive shielding material, and there are following many shortcomings in traditional peroxide cure cross-linking type semiconductive shieldin material in the production process of reality: (1), continuous processing easily produce the incipient scorch phenomenon; (2), electric property is stable inadequately, show that 20 ℃ of lower volume resistivity of normal temperature are normal, but the volume specific resistance behind the stranding is difficult to meet the regulation of country to shielding material mechanical-physical and electric property; (3), be used to improve the incipient scorch inhibitor of incipient scorch phenomenon and to eliminate other added ingredients cost of incipient scorch inhibitor negative effect higher.Because one of member that semiconductive shieldin material is a medium and high voltage cable must be adopted, and, the continuous working ability of semiconductive shieldin material is had higher requirement for adapting to current higher crosslinked cable market demand.
Summary of the invention
Defective in view of above-mentioned prior art existence, the objective of the invention is to propose crosslinked cable conductor peroxide crosslinking type semiconductive shieldin material and production technique thereof, graphitized carbon black is disperseed in the EVA material as far as possible equably, from shielding material component and the many-sided technological improvement of process recipes is prerequisite, reduces in the use of shielding material because problems such as the product rejection that the incipient scorch phenomenon causes, energy consumptions.
Above-mentioned first purpose of the present invention will be achieved by the following technical programs:
Crosslinked cable conductor peroxide crosslinking type semiconductive shieldin material, it is characterized in that, calculating component by mass is: 50%～60% EVA material, 28%～38% carbon black, 4%～10% softening agent, 1%～2% linking agent, and 0.1%～1% oxidation inhibitor;
The adjustable ratio multipolymer that described EVA material is ethene and vinyl acetate between to for plastic; Described linking agent is a peroxide; Described softening agent comprises one or more mixing in oil, paraffin, stearic acid, Zinic stearas, the polyethylene wax;
Described shielding material by the recipe ingredient banburying that feeds intake according to the order of sequence, again through the forcing machine extruding pelletization, adds linking agent then and makes in clean internal mixer.
Above-mentioned crosslinked cable conductor peroxide crosslinking type semiconductive shieldin material, it is further characterized in that, calculating component by mass is: 54%～56% EVA material, 33%～35% carbon black, 5%～8% softening agent, 1%～1.5% linking agent, and 0.1%～1% oxidation inhibitor;
The adjustable ratio multipolymer that described EVA material is ethene and vinyl acetate between to for plastic; Described linking agent is a peroxide; Described softening agent comprises one or more mixing in oil, paraffin, stearic acid, Zinic stearas, the polyethylene wax;
Described shielding material by the recipe ingredient banburying that feeds intake according to the order of sequence, again through the forcing machine extruding pelletization, adds linking agent then and makes in clean internal mixer.
Above-mentioned second purpose of the present invention, the crosslinked cable conductor production technique of peroxide crosslinking type semiconductive shieldin material is characterized in that described internal mixing and plasticizing granulation comprises step:
I, examine raw material type and quantity by recipe ingredient;
II, startup Banbury mixer power supply carry out preheating, and set 150 ℃ banburying temperature;
III, adjustment pre-operation electric current 160A, and set 7～10 minutes banburying time;
IV, raw material is dropped into the Banbury mixer tempering tank by the order of EVA material, carbon black, auxiliary agent;
The banburying of pressurizeing of V, airtight tempering tank, and opening time time switch simultaneously;
VI, timing are carried out extruding pelletization after finishing, and add linking agent by the imbibition method then.
Crosslinked cable conductor of the present invention peroxide crosslinking type semiconductive shieldin material, its outstanding effect is:
By in the semiconductive shieldin material production process, proportioning raw materials is especially added the formulated component of auxiliary agent, and in the internal mixing and plasticizing process processing temperature, time and pressure and other parameters are controlled, control the sooty dispersity, significantly promoted and be applied to 35KV and the following cross-linked polyethylene insulated cable conductor electric property that shields the material product, eliminated the incipient scorch phenomenon in the product use.
Following constipation closes embodiment, the specific embodiment of the present invention is described in further detail, so that technical solution of the present invention is easier to understand, grasp.
Embodiment
The present invention improves the electric property of shielding material product simultaneously for improving the incipient scorch phenomenon of tradition shielding material in use continuously, and then improves the widespread use of cross-linked polyethylene insulated cable in 35KV and following power transmission and distribution system.Be to realize this purpose, one aspect of the present invention is furtherd investigate on proportioning raw materials, under the situation that main raw material(s) can not be substituted, selects for use and try to join to have obtained a kind of brand-new and shielding material processing formula with outstanding effect.It calculates component by mass: 50%～60% EVA material, 28%～38% carbon black, 4%～10% softening agent, 1%～2% linking agent, and 0.1%～1% oxidation inhibitor.
Wherein, the EVA material is the adjustable ratio multipolymer of ethene and vinyl acetate between to for plastic, is a kind of novel environmentally-friendly plastic foam material in the product of rubber and plastic, has advantages such as good buffering, antidetonation, heat insulation, moistureproof, resist chemical, nontoxic and exclusion of water.
This carbon black has all multi-usages in plastic industry, comprise being used for painted, antiultraviolet or conduction etc.So, in the process of carrying out semiconductive shieldin material production, select suitable graphitized carbon black raw material, important step is absolutely necessary.And the optional carbon black types of the present invention is a graphitized carbon black.
This linking agent and carbon black, EVA are identical, are the conventional main raw material of producing semiconductive shieldin material, and it is mainly peroxide.
In addition, this softening agent comprises one or more mixing in oil, paraffin, stearic acid, Zinic stearas, the polyethylene wax; Optional Hinered phenols of this oxidation inhibitor and auxiliary antioxidant are commercially available conventional industrial chemicals.
Embodiment one
The quality proportioning of shielding material is: 52% EVA material, 35% carbon black, 9% softening agent, 2% linking agent, 1% oxidation inhibitor and 1% other add ingredients.
Wherein the source of purchasing of EVA material is: Korea S's Samsung, and Mitsui, platform is moulded, Singapore TPC, Beijing organic chemical industry, German BASF.The trade mark comprises respectively: 180F, ES430,460,7350M, H2181,5110J, 183; Graphitized carbon black is from Cabot, and moral is Sha admittedly, and middle rubber or eastern forever chemical industry are purchased and obtained; Linking agent is: dicumyl peroxide (DCP), and benzoyl peroxide (BPO) or vinyl triethoxyl silicon burn (A151); Oxidation inhibitor is β (3,5 di-tert-butyl-hydroxy phenyl) propionic acid stearyl alcohol ester (claiming antioxidant 1076 again); Softening agent is any proportioning mixture of stearic acid and oil.
This internal mixing and plasticizing technological process is: examine raw material type and quantity by recipe ingredient earlier; Start the Banbury mixer power supply first and carry out preheating, and set 150 ℃ banburying temperature, adjust pre-operation electric current 160A, and set single stove banburying time of 9 minutes; Then the order in strict accordance with EVA material, carbon black, auxiliary agent drops into the Banbury mixer tempering tank with raw material, and auxiliary agent comprises oxidation inhibitor, softening agent and other interpolation ingredients; The banburying of pressurizeing of airtight then tempering tank, and open time switch simultaneously; Treat at last to carry out extruding pelletization after timing finishes, and add linking agent by the imbibition method.
Embodiment two
The quality proportioning of shielding material is: 55% EVA material, 33% carbon black, 8% softening agent, 1% linking agent, 0.5% oxidation inhibitor and 2.5% other add ingredients.
Wherein the source of purchasing of EVA material is: Korea S's Samsung, and Mitsui, platform is moulded, Singapore TPC, Beijing organic chemical industry, German BASF.The trade mark comprises respectively: 180F, ES430,460,7350M, H2181,5110J, 183; Graphitized carbon black is from Cabot, and moral is Sha admittedly, and middle rubber or eastern forever chemical industry are purchased and obtained; Linking agent is: dicumyl peroxide (DCP), and benzoyl peroxide (BPO) or vinyl triethoxyl silicon burn (A151); Oxidation inhibitor is 4,4 '-thiobis (3 methy 6 tert butyl phenol) (claiming antioxidant 300 again); Softening agent is any proportioning mixture of stearic acid and oil.
This internal mixing and plasticizing technological process is: examine raw material type and quantity by recipe ingredient earlier; Start the Banbury mixer power supply first and carry out preheating, and set 150 ℃ banburying temperature, adjust pre-operation electric current 160A, and set single stove banburying time of 8 minutes; Then the order in strict accordance with EVA material, carbon black, auxiliary agent drops into the Banbury mixer tempering tank with raw material, and auxiliary agent comprises oxidation inhibitor, softening agent and other interpolation ingredients; The banburying of pressurizeing of airtight then tempering tank, and open time switch simultaneously; Treat at last to carry out extruding pelletization after timing finishes, and add linking agent by the imbibition method.
Embodiment three
The quality proportioning of shielding material is: 54% EVA material, 32% carbon black, 6% softening agent, 1.5% linking agent, 1% oxidation inhibitor and 5% other add ingredients.
Wherein the source of purchasing of EVA material is: Korea S's Samsung, and Mitsui, platform is moulded, Singapore TPC, Beijing organic chemical industry, German BASF.The trade mark comprises respectively: 180F, ES430,460,7350M, H2181,5110J, 183; Graphitized carbon black is from Cabot, and moral is Sha admittedly, and middle rubber or eastern forever chemical industry are purchased and obtained; Linking agent is: dicumyl peroxide (DCP), and benzoyl peroxide (BPO) or vinyl triethoxyl silicon burn (A151); Oxidation inhibitor is (β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol ester (antioxidant 1010); Softening agent is any proportioning mixture of stearic acid and oil.
This internal mixing and plasticizing technological process is: examine raw material type and quantity by recipe ingredient earlier; Start the Banbury mixer power supply first and carry out preheating, and set 150 ℃ banburying temperature, adjust pre-operation electric current 160A, and set single stove banburying time of 7 minutes; Then the order in strict accordance with EVA material, carbon black, auxiliary agent drops into the Banbury mixer tempering tank with raw material, and auxiliary agent comprises oxidation inhibitor, softening agent and other interpolation ingredients; The banburying of pressurizeing of airtight then tempering tank, and open time switch simultaneously; Treat at last to carry out extruding pelletization after timing finishes, and add linking agent by the imbibition method.
Embodiment four
The quality proportioning of shielding material is: 58% EVA material, 30% carbon black, 7% softening agent, 1.5% linking agent, 1% oxidation inhibitor and 3% other add ingredients.
Wherein the source of purchasing of EVA material is: Korea S's Samsung, and Mitsui, platform is moulded, Singapore TPC, Beijing organic chemical industry, German BASF.The trade mark comprises respectively: 180F, ES430,460,7350M, H2181,5110J, 183; Graphitized carbon black is from Cabot, and moral is Sha admittedly, and middle rubber or eastern forever chemical industry are purchased and obtained; Linking agent is: dicumyl peroxide (DCP), and benzoyl peroxide (BPO) or vinyl triethoxyl silicon burn (A151); The oxidation inhibitor model is 300; Softening agent is any proportioning mixture of stearic acid and oil.
This internal mixing and plasticizing technological process is: examine raw material type and quantity by recipe ingredient earlier; Start the Banbury mixer power supply first and carry out preheating, and set 150 ℃ banburying temperature, adjust pre-operation electric current 160A, and set single stove banburying time of 7 minutes; Then the order in strict accordance with EVA material, carbon black, auxiliary agent drops into the Banbury mixer tempering tank with raw material, and auxiliary agent comprises oxidation inhibitor, softening agent and other interpolation ingredients; The banburying of pressurizeing of airtight then tempering tank, and open time switch simultaneously; Treat at last to carry out extruding pelletization after timing finishes, and add linking agent by the imbibition method.
Embodiment five
The quality proportioning of shielding material is: 60% EVA material, 28% carbon black, 4% softening agent, 2% linking agent, 1% oxidation inhibitor and 3% other add ingredients.
Wherein the source of purchasing of EVA material is: Korea S's Samsung, and Mitsui, platform is moulded, Singapore TPC, Beijing organic chemical industry, German BASF.The trade mark comprises respectively: 180F, ES430,460,7350M, H2181,5110J, 183; Graphitized carbon black is from Cabot, and moral is Sha admittedly, and middle rubber or eastern forever chemical industry are purchased and obtained; Linking agent is: dicumyl peroxide (DCP), and benzoyl peroxide (BPO) or vinyl triethoxyl silicon burn (A151); The oxidation inhibitor model is 1076; Softening agent is any proportioning mixture of stearic acid and oil.
This internal mixing and plasticizing technological process is: examine raw material type and quantity by recipe ingredient earlier; Start the Banbury mixer power supply first and carry out preheating, and set 150 ℃ banburying temperature, adjust pre-operation electric current 160A, and set single stove banburying time of 9 minutes; Then the order in strict accordance with EVA material, carbon black, auxiliary agent drops into the Banbury mixer tempering tank with raw material, and auxiliary agent comprises oxidation inhibitor, softening agent and other interpolation ingredients; The banburying of pressurizeing of airtight then tempering tank, and open time switch simultaneously; Treat at last to carry out extruding pelletization after timing finishes, and add linking agent by the imbibition method.
This shielding material graphitized carbon black in processing continuously is dispersed among the EVA material, make its in use the incipient scorch phenomenon obviously suppressed.Prepared shielding material product: be not higher than 100, be not higher than 5000 at 90 ℃ of lower volume resistivity of high temperature Ω cm at 20 ℃ of lower volume resistivity of normal temperature Ω cm; And 90 ℃ of lower volume resistivity of high temperature Ω cm is not higher than 1000 after product air thermal ageing.
Detailed introduction by above embodiment, in semiconductive shieldin material production process of the present invention, proportioning raw materials is especially added the formulated component of auxiliary agent, and there has been one to understand clearly to processing temperature, time and pressure and other parameters control in the internal mixing and plasticizing granulation process, its special-effect is: significantly promoted this and be applied to 35KV and the following cross-linked polyethylene insulated cable conductor electric property that shields the material product, eliminated the incipient scorch phenomenon in the product use.Thereby make this shielding material product be easy to continuous production, satisfy the imbalance between supply and demand of crosslinked cable.
Claims (3)
1. the crosslinked cable conductor is with peroxide crosslinking type semiconductive shieldin material, it is characterized in that, calculating component by mass is: 50%～60% EVA material, 28%～38% carbon black, 4%～8% softening agent, 1%～2% linking agent, and 0.1%～1% oxidation inhibitor;
The adjustable ratio multipolymer that described EVA material is ethene and vinyl acetate between to for plastic; Described linking agent is a superoxide; Described softening agent comprises one or more mixing in oil, paraffin, stearic acid, Zinic stearas, the polyethylene wax;
Described shielding material is fed intake according to the order of sequence by recipe ingredient in clean internal mixer and carries out banburying, again through the forcing machine extruding pelletization, adds linking agent then and makes.
2. crosslinked cable conductor according to claim 1 peroxide crosslinking type semiconductive shieldin material, it is characterized in that, calculating component by mass is: 54%～56% EVA material, 33%～35% carbon black, 5%～7% softening agent, 1%～1.5% linking agent, and 0.1%～1% oxidation inhibitor;
The adjustable ratio multipolymer that described EVA material is ethene and vinyl acetate between to for plastic; Described linking agent is a superoxide; Described softening agent comprises one or more mixing in oil, paraffin, stearic acid, Zinic stearas, the polyethylene wax;
Described shielding material by the recipe ingredient banburying that feeds intake according to the order of sequence, again through the forcing machine extruding pelletization, adds linking agent then and makes in clean internal mixer.
3. the described crosslinked cable conductor of claim 1 is characterized in that described internal mixing and plasticizing granulation comprises step with the production technique of peroxide crosslinking type semiconductive shieldin material:
I, examine raw material type and quantity by recipe ingredient;
II, startup Banbury mixer power supply carry out preheating, and set 150 ℃ banburying temperature;
III, adjustment pre-operation electric current 160A, and set 6～9 minutes banburying time;
IV, raw material is dropped into the Banbury mixer tempering tank by the order of EVA material, carbon black, auxiliary agent;
The banburying of pressurizeing of V, airtight tempering tank, and opening time time switch simultaneously;
VI, timing finish to carry out extruding pelletization, and add linking agent by the imbibition method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010217926 CN101891916A (en) | 2010-07-06 | 2010-07-06 | Peroxide crosslinked type semi-conductive screen material for crosslinked cable conductor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010217926 CN101891916A (en) | 2010-07-06 | 2010-07-06 | Peroxide crosslinked type semi-conductive screen material for crosslinked cable conductor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545045A (en) * | 2013-10-24 | 2014-01-29 | 苏州市双鑫新材料科技有限公司 | High-voltage cable structure with semiconductive external shielding material capable of being peeled |
| CN103554645A (en) * | 2013-10-31 | 2014-02-05 | 合肥得润电子器件有限公司 | Modified tear-resistant EVA (Ethylene-Vinyl Acetate) insulating material for wire harnesses of automobile |
| CN104411763A (en) * | 2012-06-13 | 2015-03-11 | 北京低碳清洁能源研究所 | Crosslinked polyethylene composition |
| CN104744803A (en) * | 2015-04-02 | 2015-07-01 | 贵州星天电线电缆有限公司 | Conductor screening material containing buckyball elements for high-voltage cable and preparation method of conductor screening material |
| 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 |
| US20210403650A1 (en) * | 2019-07-12 | 2021-12-30 | Wacker Chemie Ag | Pre-swelled vinylacetate-ethylene based redispersible polymer powder composition and method for fabricating the same, asphalt composition comprising the same |
| CN114940784A (en) * | 2022-03-16 | 2022-08-26 | 重庆大学 | Water-blocking cable semiconductive shielding layer material and preparation method thereof |
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| CN1207754A (en) * | 1995-11-22 | 1999-02-10 | 卡伯特公司 | Polymeric compositions |
| CN101585943A (en) * | 2009-06-18 | 2009-11-25 | 上海交通大学 | Cable semi-conductive shielding material and preparation method thereof |
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| US4933107A (en) * | 1988-03-29 | 1990-06-12 | Hitachi Cable Ltd. | Easily peelable semiconductive resin composition |
| CN1207754A (en) * | 1995-11-22 | 1999-02-10 | 卡伯特公司 | Polymeric compositions |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104411763A (en) * | 2012-06-13 | 2015-03-11 | 北京低碳清洁能源研究所 | Crosslinked polyethylene composition |
| CN103545045A (en) * | 2013-10-24 | 2014-01-29 | 苏州市双鑫新材料科技有限公司 | High-voltage cable structure with semiconductive external shielding material capable of being peeled |
| CN103545045B (en) * | 2013-10-24 | 2015-12-02 | 苏州市双鑫新材料科技有限公司 | A kind of High-voltage cable structure with strippable semi-conductive external shield material |
| CN103554645A (en) * | 2013-10-31 | 2014-02-05 | 合肥得润电子器件有限公司 | Modified tear-resistant EVA (Ethylene-Vinyl Acetate) insulating material for wire harnesses of automobile |
| CN104744803A (en) * | 2015-04-02 | 2015-07-01 | 贵州星天电线电缆有限公司 | Conductor screening material containing buckyball elements for high-voltage cable and preparation method of conductor screening material |
| US20210403650A1 (en) * | 2019-07-12 | 2021-12-30 | Wacker Chemie Ag | Pre-swelled vinylacetate-ethylene based redispersible polymer powder composition and method for fabricating the same, asphalt composition comprising the same |
| 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 |
| CN114940784A (en) * | 2022-03-16 | 2022-08-26 | 重庆大学 | Water-blocking cable semiconductive shielding layer material and preparation method thereof |
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Application publication date: 20101124 |