CN102295796A - Conductive polyolefin sheathing compound for superhigh voltage cable sheath and preparation method thereof - Google Patents
Conductive polyolefin sheathing compound for superhigh voltage cable sheath and preparation method thereof Download PDFInfo
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- CN102295796A CN102295796A CN 201010209469 CN201010209469A CN102295796A CN 102295796 A CN102295796 A CN 102295796A CN 201010209469 CN201010209469 CN 201010209469 CN 201010209469 A CN201010209469 A CN 201010209469A CN 102295796 A CN102295796 A CN 102295796A
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- cable sheath
- carbon black
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- graphitized carbon
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Abstract
The invention relates to a cable sheathing compound and a manufacturing method thereof and in particular relates to a conductive polyolefin sheathing compound for a superhigh voltage cable sheath and a manufacturing method thereof, and the conductive polyolefin sheathing compound provided by the invention is mainly used for solving the defects that the production pollution of the existing conductive polyolefin sheathing compound for the superhigh voltage cable sheath is large, the volume resistivity of the sheathing compound is not stable and the like. The conductive polyolefin sheathing compound for the superhigh voltage cable sheath is prepared from the following raw materials by weight percent: 65-85% of polyolefin resin and 15-35% of conductive master batch, wherein the conductive master batch comprises the following components by weight percent: 5-15% of thermoplastic elastomer, 5-15% of ethylene copolymer, 20-40% of conductive carbon black a, 10-30% of conductive carbon black b, 10-40% of dispersing agent, 1-20% of antioxidant and 1-10% of processing aid. The conductive polyolefin sheathing compound for the superhigh voltage cable sheath provided by the invention can be widely used for an outer sheath of a superhigh voltage cable.
Description
Technical field
The present invention relates to a kind of cable jacket material and preparation method, particularly a kind of extra-high-tension cable sheath is with conducting electricity polyolefin jacket material and preparation method thereof.
Background technology
In the extra-high-tension cable production process, need apply one deck Graphite Powder 99 as semi-conductive layer in the restrictive coating outside of cable, be used for the detection of cable sheath, but graphite have a lot of shortcomings in coating process, fly upward easily, spread such as Graphite Powder 99, pollute production plant; Coating easily comes off, also pollute surrounding environment etc. when influencing the normal detection of installation process, simultaneously, since another effect of semiconduction outer jacket be with induced electric charge on the sheath by semi-conductive layer to contact (as the earth etc.) discharge, and then guarantee the safe operation of cable and prevent to cause workmen's electric shock that the coming off also can cause very the safe operation of cable of semi-conductive layer seriously influences.
The extra-high-tension cable semi-conductive layer still adopts the mode that applies graphite mostly in the market, in view of above shortcoming, more rational settling mode is to extrude semi-conductive layer to replace graphite on oversheath, though adopt the report that extrudes the semi-conductive layer cable at present relevant for some producers, but the report about the manufacture method of semiconduction material and technology is less, and the preparation technology of semiconduction material is unreasonable, graphitized carbon black powder dispersity is not enough, the volume specific resistance instability, and cause carbon powder to pollute also bigger to production plant.
Summary of the invention
The objective of the invention is that the graphitized carbon black powder dispersity that uses in the present common extra-high-tension cable semi-conductive layer is too low, volume specific resistance is unstable in order to solve, simultaneously production plant is produced problems such as pollution, provide a kind of extra-high-tension cable sheath with conducting electricity polyolefin jacket material and preparation method thereof.
The present invention solves above-mentioned technical problem by the following technical solutions:
A kind of extra-high-tension cable sheath is with conducting electricity polyolefin jacket material, and its raw material comprises that weight percentage is the polyolefin resin of 65-85% and the conductive agglomerate of 15-35%, and described conductive agglomerate comprises following components in weight percentage:
Thermoplastic elastomer 5-15%;
Ethylene copolymer 5-15%;
Graphitized carbon black a 20-40%;
Graphitized carbon black b 10-30%;
Dispersion agent 10-40%;
Oxidation inhibitor 1-20%;
Processing aid 1-10%.
Described polyolefin resin is a linea low density PE resin, and its density is 0.928g/cm
3
Described thermoplastic elastomer is ethylene-octene copolymer (POE), selects the POE8203 resin for use.
Described ethylene copolymer is ethene-vinyl acetate copolymer (EVA), selects EVA265 for use.
Described graphitized carbon black a is the 40B2 graphitized carbon black; Described graphitized carbon black a is superconduction carbon black 350G.
Described dispersion agent is a Zinic stearas.
Described oxidation inhibitor is four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (antioxidant 1010).
Described processing aid is a polyethylene wax, and its weight average molecular weight range is 1500～2000.
The present invention also provides the preparation method of a kind of above-mentioned extra-high-tension cable sheath with the conduction polyolefin jacket material, may further comprise the steps:
(1) thermoplastic elastomer, ethylene copolymer, graphitized carbon black a, graphitized carbon black b, dispersion agent, oxidation inhibitor and processing aid are pressed the proportioning mixing granulation, be prepared into the particulate state conductive agglomerate;
(2) step 1 gained conductive agglomerate is mixed by proportioning with polyolefin resin, through mixing, extrude and obtain extra-high-tension cable sheath of the present invention after making material, oven dry with the conduction polyolefin jacket material.
Among the above-mentioned preparation method provided by the invention, described in granulation described in the step 1 and the step 2 mixing, extrude make material, oven dry all can adopt this area in the prilling process of routine and the conventional working method of polymkeric substance compound to carry out.
Preferable, the extra-high-tension cable sheath of the present invention preparation method of conduction polyolefin jacket material may further comprise the steps:
(1) thermoplastic elastomer, ethylene copolymer, graphitized carbon black a, graphitized carbon black b, dispersion agent, oxidation inhibitor and processing aid are mixed by proportioning after, insert in the low speed kneader and stir, be prepared into the particulate state conductive agglomerate; Described low speed kneader stir the slurry rotating speed be 80 rev/mins; Temperature during kneading is 50 ℃; The kneading time is 5～10min;
(2) with step 1 gained conductive agglomerate with after polyolefin resin mixes by proportioning, insert in the high speed kneader heating and carry out high-speed stirring; Described high speed kneader stir the slurry rotating speed be 200 rev/mins; Temperature during kneading is 90 ℃; The kneading time is 10min;
(3) raw material that stirs in the step 2 directly being entered the twin screw grain-making machine extrudes and makes material; Described each section of twin screw grain-making machine Heating temperature is divided equally from 170～200 ℃ by the heating hop count;
(4) extrude the finished product drying of making material after, obtain extra-high-tension cable sheath of the present invention with the conduction polyolefin jacket material.
Adopt the extra-high-tension cable sheath of above-mentioned preparation method's gained to use the density of conduction polyolefin jacket material less than 1.0g/cm
3
Beneficial effect of the present invention is: the dispersity of (1) graphitized carbon black is very high, and sheath material has very good conductivity, and volume specific resistance can reach below the 5 Ω cm; (2) possess environmental-protecting performance, meet the ROHS standard; (3) performance about polyolefin jacket material of conformance with standard regulation of the present invention, and processing characteristics is good; (4) adopt the method for preparing earlier conductive agglomerate, the pollution to the workshop in the production process is less, guarantees that simultaneously the product conductivity is stable.
Embodiment
Further set forth the present invention below in conjunction with embodiment.Should be understood that these embodiment only are used to illustrate the present invention, but not limit the scope of the invention.
Embodiment 1
The extra-high-tension cable sheath is with conducting electricity polyolefin jacket material, in 100 kilograms, the weight proportion of conductive agglomerate is: 30 kilograms of graphitized carbon black 40B2,10 kilograms of Exxon Mobil POE8203 resins, 20 kilograms of graphitized carbon black 350G, the EVA265 of ethylene copolymer Du Pont is 15 kilograms, 10 kilograms of Zinic stearass, antioxidant 1010 is 5 kilograms, 10 kilograms of granulations of processing aid polyethylene wax are prepared into conductive agglomerate, adopt conventional compound method then, in 100 kilograms, get 20 kilograms of conductive agglomerates, add 80 kilograms of linea low density PE resins through batching, mixing, extrude, make material and be prepared into sheath material.
Concrete preparation method is as follows:
(1) thermoplastic elastomer, ethylene copolymer, graphitized carbon black a, graphitized carbon black b, dispersion agent, oxidation inhibitor and processing aid are mixed by proportioning after, insert in the low speed kneader and stir, be prepared into the particulate state conductive agglomerate; The low speed kneader stir the slurry rotating speed be 80 rev/mins; Temperature during kneading is 50 ℃; The kneading time is 5～10min;
(2) with step 1 gained conductive agglomerate with after polyolefin resin mixes by proportioning, insert in the high speed kneader heating and carry out high-speed stirring; The high speed kneader stir the slurry rotating speed be 200 rev/mins; Temperature during kneading is 90 ℃; The kneading time is 10min;
(3) raw material that stirs in the step 2 directly being entered the twin screw grain-making machine extrudes and makes material; Each section of twin screw grain-making machine Heating temperature is divided equally from 170～200 ℃ by the heating hop count;
(4) extrude the finished product drying of making material after, obtain extra-high-tension cable sheath of the present invention with the conduction polyolefin jacket material.
Embodiment 2
The extra-high-tension cable sheath is with conducting electricity polyolefin jacket material, in 100 kilograms, the weight proportion of conductive agglomerate is: 25 kilograms of graphitized carbon black 40B2,22 kilograms of Exxon Mobil POE8203 resins, 15 kilograms of graphitized carbon black 350G, the ethylene copolymer EVA EVA265 of Du Pont is 15 kilograms, 8 kilograms of dispersion agent Zinic stearass, antioxidant 1010 is 5 kilograms, 10 kilograms of granulations of processing aid polyethylene wax are prepared into conductive agglomerate, adopt conventional compound method then, in 100 kilograms, get 25 kilograms of conductive agglomerates, add 75 kilograms of linea low density PE resins through batching, mixing, extrude, make material and be prepared into sheath material.
Concrete preparation method is with embodiment 1.
Embodiment 3
The extra-high-tension cable sheath is with conducting electricity polyolefin jacket material, in 100 kilograms, the weight proportion of conductive agglomerate is: 20 kilograms of graphitized carbon black 40B2,10 kilograms of Exxon Mobil POE8203 resins, 30 kilograms of graphitized carbon black 350G, the ethylene copolymer EVA EVA265 of Du Pont is 5 kilograms, 29 kilograms of dispersion agent Zinic stearass, antioxidant 1010 is 1 kilogram, 5 kilograms of granulations of processing aid polyethylene wax are prepared into conductive agglomerate, adopt conventional compound method then, in 100 kilograms, get 15 kilograms of conductive agglomerates, add 85 kilograms of linea low density PE resins through batching, mixing, extrude, make material and be prepared into sheath material.
Concrete preparation method is with embodiment 1.
Embodiment 4
The extra-high-tension cable sheath is with conducting electricity polyolefin jacket material, in 100 kilograms, the weight proportion of conductive agglomerate is: 40 kilograms of graphitized carbon black 40B2,5 kilograms of Exxon Mobil POE8203 resins, 10 kilograms of graphitized carbon black 350G, the ethylene copolymer EVA EVA265 of Du Pont is 10 kilograms, 15 kilograms of dispersion agent Zinic stearass, antioxidant 1010 is 10 kilograms, 10 kilograms of granulations of processing aid polyethylene wax are prepared into conductive agglomerate, adopt conventional compound method then, in 100 kilograms, get 35 kilograms of conductive agglomerates, add 65 kilograms of linea low density PE resins through batching, mixing, extrude, make material and be prepared into sheath material.
Concrete preparation method is with embodiment 1.
Embodiment 5
The extra-high-tension cable sheath is with conducting electricity polyolefin jacket material, in 100 kilograms, the weight proportion of conductive agglomerate is: 20 kilograms of graphitized carbon black 40B2,5 kilograms of Exxon Mobil POE8203 resins, 10 kilograms of graphitized carbon black 350G, the ethylene copolymer EVA EVA265 of Du Pont is 14 kilograms, 30 kilograms of dispersion agent Zinic stearass, antioxidant 1010 is 20 kilograms, 1 kilogram of granulation of processing aid polyethylene wax is prepared into conductive agglomerate, adopt conventional compound method then, in 100 kilograms, get 30 kilograms of conductive agglomerates, add 70 kilograms of linea low density PE resins through batching, mixing, extrude, make material and be prepared into sheath material.
Concrete preparation method is with embodiment 1.
Embodiment 6
The extra-high-tension cable sheath is with conducting electricity polyolefin jacket material, in 100 kilograms, the weight proportion of conductive agglomerate is: 20 kilograms of graphitized carbon black 40B2,5 kilograms of Exxon Mobil POE8203 resins, 10 kilograms of graphitized carbon black 350G, the ethylene copolymer EVA EVA265 of Du Pont is 9 kilograms, 40 kilograms of dispersion agent Zinic stearass, antioxidant 1010 is 15 kilograms, 1 kilogram of granulation of processing aid polyethylene wax is prepared into conductive agglomerate, adopt conventional compound method then, in 100 kilograms, get 20 kilograms of conductive agglomerates, add 80 kilograms of linea low density PE resins through batching, mixing, extrude, make material and be prepared into sheath material.
Concrete preparation method is with embodiment 1.
The performance test data of the foregoing description products obtained therefrom is as shown in table 1 below:
Table 1
Claims (10)
1. a cable sheath is with conducting electricity polyolefin jacket material, and its raw material comprises that weight percentage is the polyolefin resin of 65-85% and the conductive agglomerate of 15-35%, and described conductive agglomerate comprises following components in weight percentage:
Thermoplastic elastomer 5-15%;
Ethylene copolymer 5-15%;
Graphitized carbon black a 20-40%;
Graphitized carbon black b 10-30%;
Dispersion agent 10-40%;
Oxidation inhibitor 1-20%;
Processing aid 1-10%.
2. cable sheath as claimed in claim 1 is characterized in that with the conduction polyolefin jacket material described polyolefin resin is a linea low density PE resin.
3. cable sheath as claimed in claim 1 is characterized in that with the conduction polyolefin jacket material described thermoplastic elastomer is POE POE.
4. cable sheath as claimed in claim 1 is characterized in that with the conduction polyolefin jacket material described ethylene copolymer is ethene-vinyl acetate copolymer EVA.
5. cable sheath as claimed in claim 1 is characterized in that with the conduction polyolefin jacket material described graphitized carbon black a is the 40B2 graphitized carbon black.
6. cable sheath as claimed in claim 1 is characterized in that with the conduction polyolefin jacket material described graphitized carbon black a is superconduction carbon black 350G.
7. cable sheath as claimed in claim 1 is characterized in that with the conduction polyolefin jacket material described dispersion agent is a Zinic stearas.
8. cable sheath as claimed in claim 1 is characterized in that with the conduction polyolefin jacket material described oxidation inhibitor is four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.
9. cable sheath as claimed in claim 1 is characterized in that with the conduction polyolefin jacket material described processing aid is a polyethylene wax.
10. as the preparation method of the described cable sheath of arbitrary claim among the claim 1-9, may further comprise the steps with the conduction polyolefin jacket material:
(1) thermoplastic elastomer, ethylene copolymer, graphitized carbon black a, graphitized carbon black b, dispersion agent, oxidation inhibitor and processing aid are pressed the proportioning mixing granulation, be prepared into the particulate state conductive agglomerate;
(2) step 1 gained conductive agglomerate is mixed by proportioning with polyolefin resin, through mixing, extrude make material, the oven dry after obtain the extra-high-tension cable sheath with the conduction polyolefin jacket material.
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| CN 201010209469 CN102295796B (en) | 2010-06-24 | 2010-06-24 | Conductive polyolefin sheathing compound for superhigh voltage cable sheath and preparation method thereof |
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| CN 201010209469 CN102295796B (en) | 2010-06-24 | 2010-06-24 | Conductive polyolefin sheathing compound for superhigh voltage cable sheath and preparation method thereof |
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| CN102295796B CN102295796B (en) | 2013-01-02 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103483673A (en) * | 2013-09-17 | 2014-01-01 | 安徽埃克森科技集团有限公司 | Low-smoke halogen-free inflaming retarding polyolefin photovoltaic cable sheath polyolefin material and method for preparing same |
| CN109851904A (en) * | 2019-03-11 | 2019-06-07 | 南通立晟德新材料科技有限公司 | A kind of submarine cable semiconductive pe sheath |
| CN110491585A (en) * | 2019-07-29 | 2019-11-22 | 安徽电缆股份有限公司 | A kind of high-tensile computer cable |
| CN114656713A (en) * | 2021-12-29 | 2022-06-24 | 高邮市金国电缆材料厂有限公司 | High-conductivity polyolefin sheath material and preparation method thereof |
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| CN101544790A (en) * | 2009-04-17 | 2009-09-30 | 安徽纵横高科电缆股份有限公司 | 125 DEG C resistance low smoke non-halogen rubber-sheathed cable shielding material |
| CN101633766A (en) * | 2009-05-22 | 2010-01-27 | 上海凯波特种电缆料厂有限公司 | Environment-friendly flame retardant semiconductive PVC sheathing compound used for ultra-pressure cable sheath |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101544790A (en) * | 2009-04-17 | 2009-09-30 | 安徽纵横高科电缆股份有限公司 | 125 DEG C resistance low smoke non-halogen rubber-sheathed cable shielding material |
| CN101633766A (en) * | 2009-05-22 | 2010-01-27 | 上海凯波特种电缆料厂有限公司 | Environment-friendly flame retardant semiconductive PVC sheathing compound used for ultra-pressure cable sheath |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103483673A (en) * | 2013-09-17 | 2014-01-01 | 安徽埃克森科技集团有限公司 | Low-smoke halogen-free inflaming retarding polyolefin photovoltaic cable sheath polyolefin material and method for preparing same |
| CN109851904A (en) * | 2019-03-11 | 2019-06-07 | 南通立晟德新材料科技有限公司 | A kind of submarine cable semiconductive pe sheath |
| CN110491585A (en) * | 2019-07-29 | 2019-11-22 | 安徽电缆股份有限公司 | A kind of high-tensile computer cable |
| CN114656713A (en) * | 2021-12-29 | 2022-06-24 | 高邮市金国电缆材料厂有限公司 | High-conductivity polyolefin sheath material and preparation method thereof |
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| CN102295796B (en) | 2013-01-02 |
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Address after: 201802 Shanghai City, Jiading District Nanxiang Town Yongle Village No. 271 Patentee after: Shanghai Kaibo cable special material Co., Ltd Address before: 201802 Shanghai City, Jiading District Nanxiang Town Yongle Village No. 271 Patentee before: SHANGHAI KAIBO SPECIAL CABLE FACTORY Co.,Ltd. |