CN104558759A - Chemical crosslinked polyethylene insulating plastic for submarine cable - Google Patents
Chemical crosslinked polyethylene insulating plastic for submarine cable Download PDFInfo
- Publication number
- CN104558759A CN104558759A CN201410708377.2A CN201410708377A CN104558759A CN 104558759 A CN104558759 A CN 104558759A CN 201410708377 A CN201410708377 A CN 201410708377A CN 104558759 A CN104558759 A CN 104558759A
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- Prior art keywords
- butyl
- insulating plastic
- tert
- polyethylene insulating
- plastic used
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Insulating Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a chemical crosslinked polyethylene insulating plastic for a submarine cable. The chemical crosslinked polyethylene insulating plastic comprises the following components in parts by weight: 100 parts of polyethylene, 1.0-3.0 parts of peroxide, 0.02-2 parts of a compound antioxidant and 0.1-2 parts of a lubricant. Appropriate peroxide and antioxidant system are adopted, so that advanced decomposition of the peroxide can be effectively prevented when a submarine cable material is processed into cables; no local high-temperature phenomenon in the processing process is ensured by addition of the lubricant; the processing property and the burning resistance of the material are improved in common; the applicability of a chemical crosslinked modified material is improved; the manifestation of traditional chemical crosslinked modified polyethylene in manufacturing of the submarine cable is changed; the pre-crosslinked phenomenon is inhibited from the source; and the continuous driving time of the submarine cable in the manufacturing process is prolonged.
Description
Technical field
The present invention relates to a kind of undersea cable with chemical crosslink polyethylene insulating plastic used.
Background technology
Processes for chemically crosslinked polyethylene comparatively its thermotolerance of common polythene, carrying capacity, heat-proof aging, mechanical property all has and largely improves, it has excellent electrical property to crosslinked polyethylene compared with polyvinyl chloride, burning does not produce toxic gas, smog simultaneously, not containing features such as carcinogenic Pb stabilizers, crosslinked polyethylene by a large amount of for the manufacture of insulated cable.In order to meet widening of insulated cable purposes, the use particularly in undersea cable, has higher requirement to traditional chemical crosslinking modified plastics.
That extra large cable is required that extending the continuous seepage time as much as possible ensures that fixed length cable has once been driven, the problem hindering it to realize is exactly that head filter screen blocks, head melt pressure becomes large gradually and forcing machine cable raises gradually, get rid of the factor of mechanical impurity, precrosslink is exactly the root that this problem occurs.So extra large cable material and conventional chemical cross-linked material are embodied in the difference of actual application the pre-cross-linking phenomena in various degree that insulating material in stranding extrusion produces.Pre-cross-linking phenomena is slight, drive more favourable continuously to cable, it is fast that traditional superoxide-antioxidant systems has cross-linked speed, and thermo oxidative aging is effective, homeostasis, thermal weight loss is low, the advantages such as anti-aging later stage validity is high, but this type of system molecular weight is large, and fusing point is high, at the easy skewness of polyethylene inner, cause end article quality fluctuation large.
Summary of the invention
The object of this invention is to provide a kind of undersea cable with chemical crosslink polyethylene insulating plastic used, to overcome the defect that prior art exists.
Undersea cable of the present invention is with chemical crosslink polyethylene insulating plastic used, and component and parts by weight comprise:
Preferably, described undersea cable is with chemical crosslink polyethylene insulating plastic used, and component and parts by weight comprise:
The density of said polyvinyl resin is 0.900 ~ 0.950g/cm3, melting index is the multipolymer of the ethene of 0.1 ~ 25g/10min and the alhpa olefin of 4 ~ 8 carbon, and foreign matter content controls: on the resin print of the banded thickness 1mm of 1kg, detect the impurity particle not allowing particle diameter to be greater than 100um;
Said superoxide is selected from one or more in two (tert-butyl peroxy base) hexane of 2,5-dimethyl-2,5-, two tert-butyl peroxy base diisopropylbenzene(DIPB), benzoyl peroxide, 4,4-two (tert-butyl peroxide) n-butyl pentanoates;
Described oxidation inhibitor be selected from fusing point lower than 70 DEG C hindered phenol antioxygen, the monothioester kind antioxidant of fusing point lower than 70 DEG C and the mixture of phosphite ester kind antioxidant, weight proportion is:
Hinered phenols: phosphorous acid esters: monothioester class=1: 0.8 ~ 1.2: 0.1 ~ 0.20;
Preferably, Hinered phenols: phosphorous acid esters: monothioester class=1:1:0.2;
Described hindered phenol antioxygen, as β-positive octadecanol ester of (3,5-di-tert-butyl-hydroxy phenyl) propionic acid, β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid isooctyl alcohol ester etc.;
Described monothioester kind antioxidant as 4,4 ,-thiobis-(the 6-tertiary butyl-3-methylphenol) or 4,4 ,-thiobis (6-tert-butyl-m-cresol)
Described phosphite ester kind antioxidant is as tricresyl phosphite (2,4--di-tert-butyl-phenyl) or two (2,4-di-tert-butyl-phenyl) season the eleventh of the twelve Earthly Branches tetrol phosphorous acid ester;
Said lubricant is selected from one or more in polyethylene wax 100#, 200#, 300#, 500#, and polyethylene wax is low-molecular-weight polyethylene.
Preparation method, comprises the steps:
After each component is measured, be fed in the 300L vacuum drum of 70 DEG C of preheatings respectively, carry out stirring mixing with the speed of 5 revs/min, blowing after 60 minutes.
The invention has the beneficial effects as follows:
The present invention adopts suitable superoxide and antioxidant system, make extra large cable material while processing stranding, effectively prevent the decomposition in advance of superoxide, ensure to there will not be localized hyperthermia's phenomenon in processing adding of lubricant simultaneously, jointly improve Drawing abillity and scorch resistant.Improve the suitability of chemical crosslinking modified material, change the performance of the cross-linking modified polyethylene of traditional chemical in extra large cable manufactures.Suppress the generation of pre-cross-linking phenomena from root, improve the extra large cable continuous driving time in the fabrication process.
Embodiment
Embodiment 1
Formula: (weight part)
Superoxide adopts the chemical name of high bridge chemical industry DCP to be dicumyl peroxide;
The chemical name of 300# oxidation inhibitor is 4,4'-thiobis (the 6-tertiary butyl-3-methylphenol;
PS800 chemical name is the two lauryl alcohol ester of thio-2 acid;
168# oxidation inhibitor chemical name is three [2.4-di-tert-butyl-phenyl] phosphorous acid ester;
Preparation method:
After each component is measured, be fed in the 300L vacuum drum of 70 DEG C of preheatings respectively, carry out stirring mixing with the speed of 5 revs/min, blowing sampling after 60 minutes.
Detection method:
Sample is by compression molding sample preparation, and sampling is 180 DEG C, 15min, and hydropress pressure is greater than 15Mpa; Dynamic crosslinking speed aspect, sample, Kazakhstan card rheometer 150 DEG C, carries out contrast test under the condition of 30 revs/min.
The print made adopts the standard of materials in GB/T12706 to detect, and result is as follows:
From test data, the product adopting the present invention and technique to obtain and the goods with raw materials melt granulation mode are suitable in mechanical property and electric property, but in a substantial change in dynamic crosslinking speed, the dynamic crosslinking speed that can delay 50% can reduce the parking frequency in cabling process greatly.
Embodiment 2
Formula: (weight part)
Preparation method with embodiment 1, detection method:
Sample is by compression molding sample preparation, and sampling is 180 DEG C, 15min, and hydropress pressure is greater than 15Mpa; Dynamic crosslinking speed aspect, sample, Kazakhstan card rheometer 150 DEG C, carries out contrast test under the condition of 30 revs/min.
The print made adopts the standard of materials in GB/T12706 to detect, and result is as follows:
From test data, the product adopting the present invention and technique to obtain and the goods with raw materials melt granulation mode are suitable in mechanical property and electric property, but in a substantial change in dynamic crosslinking speed, the dynamic crosslinking speed that can delay 50% can reduce the parking frequency in cabling process greatly.
Claims (8)
1. undersea cable is with chemical crosslink polyethylene insulating plastic used, it is characterized in that, component and parts by weight comprise:
2. undersea cable according to claim 1 is with chemical crosslink polyethylene insulating plastic used, it is characterized in that, component and parts by weight comprise:
3. undersea cable according to claim 1 and 2 is with chemical crosslink polyethylene insulating plastic used, it is characterized in that, the density of said polyvinyl resin is 0.900 ~ 0.950g/cm3, melting index is the multipolymer of the ethene of 0.1 ~ 25g/10min and the alhpa olefin of 4 ~ 8 carbon, and foreign matter content controls: on the resin print of the banded thickness 1mm of 1kg, detect the impurity particle not allowing particle diameter to be greater than 100um.
4. undersea cable according to claim 1 and 2 is with chemical crosslink polyethylene insulating plastic used, it is characterized in that, said superoxide is selected from 2,5-dimethyl-2, one or more in two (tert-butyl peroxy base) hexane of 5-, two tert-butyl peroxy base diisopropylbenzene(DIPB), benzoyl peroxide, 4,4-two (tert-butyl peroxide) n-butyl pentanoates.
5. undersea cable according to claim 4 is with chemical crosslink polyethylene insulating plastic used, it is characterized in that, described oxidation inhibitor be selected from fusing point lower than 70 DEG C hindered phenol antioxygen, the monothioester kind antioxidant of fusing point lower than 70 DEG C and the mixture of phosphite ester kind antioxidant, weight proportion is:
Hinered phenols: phosphorous acid esters: monothioester class=1: 0.8 ~ 1.2: 0.1 ~ 0.20.
6. undersea cable according to claim 5 is with chemical crosslink polyethylene insulating plastic used, it is characterized in that, Hinered phenols: phosphorous acid esters: monothioester class=1:1:0.2.
7. undersea cable according to claim 6 is with chemical crosslink polyethylene insulating plastic used, it is characterized in that, described hindered phenol antioxygen is β-(3,5-di-tert-butyl-hydroxy phenyl) the positive octadecanol ester of propionic acid or β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid isooctyl alcohol ester;
Described monothioester kind antioxidant is 4,4 ,-thiobis-(the 6-tertiary butyl-3-methylphenol) or 4,4 ,-thiobis (6-tert-butyl-m-cresol);
Described phosphite ester kind antioxidant is tricresyl phosphite (2,4--di-tert-butyl-phenyl) or two (2,4-di-tert-butyl-phenyl) season the eleventh of the twelve Earthly Branches tetrol phosphorous acid ester.
8. undersea cable according to claim 1 and 2 is with chemical crosslink polyethylene insulating plastic used, it is characterized in that, said lubricant is selected from one or more in polyethylene wax 100#, 200#, 300#, 500#, and polyethylene wax is low-molecular-weight polyethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410708377.2A CN104558759A (en) | 2014-11-28 | 2014-11-28 | Chemical crosslinked polyethylene insulating plastic for submarine cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410708377.2A CN104558759A (en) | 2014-11-28 | 2014-11-28 | Chemical crosslinked polyethylene insulating plastic for submarine cable |
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| Publication Number | Publication Date |
|---|---|
| CN104558759A true CN104558759A (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410708377.2A Pending CN104558759A (en) | 2014-11-28 | 2014-11-28 | Chemical crosslinked polyethylene insulating plastic for submarine cable |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129621A (en) * | 2017-06-26 | 2017-09-05 | 俞秀英 | A kind of transparent cable insulation material and preparation method thereof |
| KR20180018650A (en) * | 2015-06-17 | 2018-02-21 | 다우 글로벌 테크놀로지스 엘엘씨 | A cable insulation composition comprising a phosphorus-containing antioxidant |
| CN108178859A (en) * | 2017-12-19 | 2018-06-19 | 全球能源互联网研究院有限公司 | A kind of persistently weather-proof crosslinked polyethylene insulation material |
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| CN101445626A (en) * | 2008-12-26 | 2009-06-03 | 上海新上化高分子材料有限公司 | Chemical crosslink polyethylene insulating plastic used for power cable and application thereof |
| CN102643472A (en) * | 2012-04-19 | 2012-08-22 | 上海新上化高分子材料有限公司 | Chemically-crosslinkable polyethylene insulating plastic for medium/high-voltage power cables and preparation method thereof |
| CN102850636A (en) * | 2012-10-11 | 2013-01-02 | 昆山捷兴翡国际贸易有限公司 | Preparation method of high insulation polyethylene material |
| CN103289162A (en) * | 2013-03-28 | 2013-09-11 | 西安交通大学 | A water tree-resistant polyolefin cable material and a preparation method thereof |
| CN103396602A (en) * | 2013-08-28 | 2013-11-20 | 浙江太湖远大新材料有限公司 | Polyolefin insulating material and preparation method thereof |
| CN103694540A (en) * | 2013-12-16 | 2014-04-02 | 上海新上化高分子材料有限公司 | Soft high-mechanical-strength medium-voltage insulating material for ocean engineering cable and preparation method thereof |
| CN103824642A (en) * | 2014-02-10 | 2014-05-28 | 国家电网公司 | Flexible power cable with moisture-resistant and aging-resistant performances |
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2014
- 2014-11-28 CN CN201410708377.2A patent/CN104558759A/en active Pending
Patent Citations (8)
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180018650A (en) * | 2015-06-17 | 2018-02-21 | 다우 글로벌 테크놀로지스 엘엘씨 | A cable insulation composition comprising a phosphorus-containing antioxidant |
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| CN107129621A (en) * | 2017-06-26 | 2017-09-05 | 俞秀英 | A kind of transparent cable insulation material and preparation method thereof |
| CN108178859A (en) * | 2017-12-19 | 2018-06-19 | 全球能源互联网研究院有限公司 | A kind of persistently weather-proof crosslinked polyethylene insulation material |
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Application publication date: 20150429 |