CN105968487A - Heat-resistant nano magnesium oxide-doped polyethylene direct current cable composite material and preparation method thereof - Google Patents
Heat-resistant nano magnesium oxide-doped polyethylene direct current cable composite material and preparation method thereof Download PDFInfo
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- CN105968487A CN105968487A CN201610246890.3A CN201610246890A CN105968487A CN 105968487 A CN105968487 A CN 105968487A CN 201610246890 A CN201610246890 A CN 201610246890A CN 105968487 A CN105968487 A CN 105968487A
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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
- C08L23/06—Polyethene
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
A heat-resistant nano magnesium oxide-doped polyethylene direct current cable composite material is prepared from the following raw materials in parts by weight: 0.8-1.1 parts of cerium butanetetracarboxylate, 1.3-1.5 parts of nano ferriferrous oxide, 3-4 parts of TPE resin, 10-11 parts of magnesium oxide, 90-91 parts of polyethylene, 30-35 parts of N,N'-dimethylformamide, 200-220 parts of a 20% sulfuric acid solution, 100-120 parts of perfluorooctanoic acid, 23-27 parts of a nano polytetrafluoroethylene micro-powder, 70-75 parts of chloroform, 2.4-2.5 parts of methyl methacrylate, 0.1-0.2 part of potassium persulfate, and 1.5-1.6 parts of nonionic boric acid ester. The nano magnesium oxide is fluoridized, and nano microspheres are prepared by the fluoridized nano magnesium oxide and the nano polytetrafluoroethylene micro-powder, so the breakdown strength of the composite material is improved; through use of cerium butanetetracarboxylate and nano ferriferrous oxide, charge accumulation is reduced, the composite material heat resistance and radiation resistance are improved, and the service life is prolonged.
Description
Technical field
The present invention relates to CABLE MATERIALS field, particularly relate to a kind of heat-resisting nano oxidized mg-doped polyethylene direct current cables composite and preparation method thereof.
Background technology
Mixed nanometer has been widely used for improving the heat conductivility of material, mechanical property, electrical property etc..In recent decades, initial micron particle, micro-nano particle it is compound to nano-particle doping and makes material property be promoted further, develop many novel special type function materials.In insulant field, mixed nanometer improves the electrical property of material and is also gradually paid attention to.Currently, saving the energy has become the important step of social development, and traditional ac transmission is owing in electric energy course of conveying, loss is big, adnexa is complicated, high in cost of production shortcoming, and direct current transportation can make up these shortcomings.Direct current transportation has three kinds of modes: oil-filled cable is transmitted electricity；Oil-paper cable power transmission；Plastics direct current cables is transmitted electricity.Wherein plastics direct current cables has powerful potentiality, is mainly used in transmission of electricity over strait, Urban Underground power grid construction etc..But plastic cable is when direct current transportation, it may occur that conductor injects electronics and hole to insulating barrier, and insulating barrier is owing to being inhomogeneous medium, easily it is susceptible to electronics or hole accumulation, forms Space-charge effect, cause electric field distortion, there is electrical breakdown time serious, cause transmission of electricity accident.The application of mixed nanometer technology, provides direction for solving plastics direct current cables space charge accumulation problems.
Research shows, adds a small amount of nano-particle ZnO, TiO in insulated cable material2、SiO2Deng, a space charge accumulation difficult problem can be improved.Research finds, adds nano-particle and can effectively suppress space charge to gather in crosslinked polyethylene (XLPE), improves breakdown strength and specific insulation, suppression electric branch growth, improves the electric property of insulant.This makes nano-particle/XLPE composite more and more concerned, and people are referred to as third generation insulant.At present, Japanese Scientists has successfully passed and has added a small amount of MgO in polyethylene, prepares the high voltage direct current cable of 250kV/mm and 500kV/mm, is just waiting that business is applied.Also there is the nano modification CABLE MATERIALS of commercialization in DOW company of the U.S..But, how the mechanism that space charge gathers is suppressed for nano-particle, does not the most also have consistent conclusion.
Research shows, adds a small amount of nano-particle ZnO, TiO in insulated cable material2、SiO2Deng, a space charge accumulation difficult problem can be improved.Research finds, adds nano-particle and can effectively suppress space charge to gather in crosslinked polyethylene (XLPE), improves breakdown strength and specific insulation, suppression electric branch growth, improves the electric property of insulant.This makes nano-particle/XLPE composite more and more concerned, and people are referred to as third generation insulant.At present, Japanese Scientists has successfully passed and has added a small amount of MgO in polyethylene, prepares the high voltage direct current cable of 250kV/mm and 500kV/mm, is just waiting that business is applied.Also there is the nano modification CABLE MATERIALS of commercialization in DOW company of the U.S..But, how the mechanism that space charge gathers is suppressed for nano-particle, does not the most also have consistent conclusion.
" preparation of nano-MgO doping polyethylene direct current cables composite and performance " literary composition obtains the MgO granule on surface not hydroxyl (OH) by heat treatment method, mother material is used to be prepared for 10wt%MgO/ polyethylene (LDPE) composite, and have studied MgO/LDPE composite space charge characteristic under 70kV/mm DC electric field, have evaluated the method effect scattered to nano-particle and industrial applications promotional value.Additionally, be investigated MgO surface hydroxylation (OH) to the nano-MgO granule doping space charge characteristic of LDPE, alternating temperature specific insulation and the impact of dielectric property, and probe into MgO suppression space charge mechanism.
But 10 wt% MgO/ polyethylene (LDPE) composites that this article uses mother material to prepare can absorb moisture in wet environment, magnesium hydroxide can be generated, affect the space charge characteristic of composite, alternating temperature specific insulation and dielectric property, need to improve.Additionally the thermostability of this composite, soil resistance, static electricity resistance, toughness, intensity need to improve.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of moistureproof sound insulation expanded perlite phenolic resin composite insulation boards and preparation method thereof.
Technical scheme is as follows:
A kind of heat-resisting nano oxidized mg-doped polyethylene direct current cables composite, it is prepared by the raw materials in: butane tetracid cerium 0.8-1.1, nano ferriferrous oxide 1.3-1.5, TPE resin 3-4, nano magnesia 10-11, polyethylene 90-91, N, N '-dimethyl Methanamide 30-35, the sulfuric acid solution 200-220 of 20%, perfluoro caprylic acid 100-120, nanometer polytetrafluoroethylcomposite micropowder 23-27, chloroform 70-75, methyl methacrylate 2.4-2.5, potassium peroxydisulfate 0.1-0.2, nonionic borate 1.5-1.6.
The preparation method of described heat-resisting nano oxidized mg-doped polyethylene direct current cables composite, comprises the following steps:
(1) carry out being mixed to join N by nano magnesia, butane tetracid cerium, nano ferriferrous oxide and perfluoro caprylic acid, in N '-dimethyl Methanamide, ultrasonic 30-35 minute, drip sulfuric acid solution the most while stirring, it is again heated to 80-85 DEG C of stirring reaction 20-30 minute, after terminating reaction, filtering, vacuum drying obtains fluorinated nano magnesium oxide；
(2) fluorinated nano magnesium oxide mixes with nanometer polytetrafluoroethylcomposite micropowder, joins in chloroform, ultrasonic disperse 1-1.2h, and volatilization removes chloroform, is dried to obtain nanometer powder；
(3) methyl methacrylate, nonionic borate are mixed homogeneously with described nanometer powder, add potassium peroxydisulfate mix homogeneously, obtain mixed material；
(4) mixed material (3rd) step obtained and other surplus stocks, send in high-speed mixer and mix, mix homogeneously at 135-140 DEG C, then through pelletize and get final product.
Beneficial effects of the present invention
The invention have the advantage that nano magnesia is fluorinated by the present invention, Nano microsphere is made with nanometer polytetrafluoroethylcomposite micropowder, prevent CABLE MATERIALS water suction magnesium oxide from becoming magnesium hydroxide and affect the specific insulation of composite, improve the breakdown strength of composite, and improve the dispersibility of nano magnesia, reduce agglomeration, improve the lubricity of composite；Re-use methyl methacrylate, nonionic borate is modified, and improves the compatibility of nanometer powder and polyethylene, prevent powder body and sub polyethylene from, intensity reduces.By using butane tetracid cerium, nano ferriferrous oxide, decrease charge buildup, improve thermostability and the radiation resistance of composite, extend service life.
Detailed description of the invention
A kind of heat-resisting nano oxidized mg-doped polyethylene direct current cables composite, it is made up of the raw material of following weight portion (kilogram): butane tetracid cerium 1, nano ferriferrous oxide 1.4, TPE resin 3.5, nano magnesia 10, polyethylene 90, N, the sulfuric acid solution 210 of N '-dimethyl Methanamide 33,20%, perfluoro caprylic acid 110, nanometer polytetrafluoroethylcomposite micropowder 25, chloroform 73, methyl methacrylate 2.4, potassium peroxydisulfate 0.1, nonionic borate 1.5.
The preparation method of described heat-resisting nano oxidized mg-doped polyethylene direct current cables composite, comprises the following steps:
(1) carry out being mixed to join N by nano magnesia, butane tetracid cerium, nano ferriferrous oxide and perfluoro caprylic acid, in N '-dimethyl Methanamide, ultrasonic 33 minutes, drip sulfuric acid solution the most while stirring, it is again heated to 83 DEG C of stirring reactions 25 minutes, after terminating reaction, filtering, vacuum drying obtains fluorinated nano magnesium oxide；
(2) fluorinated nano magnesium oxide mixes with nanometer polytetrafluoroethylcomposite micropowder, joins in chloroform, ultrasonic disperse 1h, and volatilization removes chloroform, is dried to obtain nanometer powder；
(3) methyl methacrylate, nonionic borate are mixed homogeneously with described nanometer powder, add potassium peroxydisulfate mix homogeneously, obtain mixed material；
(4) mixed material (3rd) step obtained and other surplus stocks, send in high-speed mixer and mix, mix homogeneously at 138 DEG C, then through pelletize and get final product.
Experimental data:
The fusing point of this embodiment composite is 112 DEG C, under 70kV/mm electric field, does not occur that space charge gathers in pressurization 90min, and dielectric constant is 2.21；Carry out Mechanics Performance Testing, be fabricated to thickness 3
The sample of mm for oxygen index (OI) test, knot test result be hot strength be 20MPa, elongation at break is 234%, and oxygen index (OI) is 36.5, electrical strength is 36MV/m.
Claims (2)
1. a heat-resisting nano oxidized mg-doped polyethylene direct current cables composite, it is characterized in that: be prepared by the raw materials in: butane tetracid cerium 0.8-1.1, nano ferriferrous oxide 1.3-1.5, TPE resin 3-4, nano magnesia 10-11, polyethylene 90-91, N, N '-dimethyl Methanamide 30-35, the sulfuric acid solution 200-220 of 20%, perfluoro caprylic acid 100-120, nanometer polytetrafluoroethylcomposite micropowder 23-27, chloroform 70-75, methyl methacrylate 2.4-2.5, potassium peroxydisulfate 0.1-0.2, nonionic borate 1.5-1.6.
The preparation method of the most heat-resisting nano oxidized mg-doped polyethylene direct current cables composite, it is characterised in that comprise the following steps:
(1) carry out being mixed to join N by nano magnesia, butane tetracid cerium, nano ferriferrous oxide and perfluoro caprylic acid, in N '-dimethyl Methanamide, ultrasonic 30-35 minute, drip sulfuric acid solution the most while stirring, it is again heated to 80-85 DEG C of stirring reaction 20-30 minute, after terminating reaction, filtering, vacuum drying obtains fluorinated nano magnesium oxide；
(2) fluorinated nano magnesium oxide mixes with nanometer polytetrafluoroethylcomposite micropowder, joins in chloroform, ultrasonic disperse 1-1.2h, and volatilization removes chloroform, is dried to obtain nanometer powder；
(3) methyl methacrylate, nonionic borate are mixed homogeneously with described nanometer powder, add potassium peroxydisulfate mix homogeneously, obtain mixed material；
(4) mixed material (3rd) step obtained and other surplus stocks, send in high-speed mixer and mix, mix homogeneously at 135-140 DEG C, then through pelletize and get final product.
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| CN201610246890.3A CN105968487A (en) | 2016-04-20 | 2016-04-20 | Heat-resistant nano magnesium oxide-doped polyethylene direct current cable composite material and preparation method thereof |
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| CN201610246890.3A CN105968487A (en) | 2016-04-20 | 2016-04-20 | Heat-resistant nano magnesium oxide-doped polyethylene direct current cable composite material and preparation method thereof |
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| CN105968487A true CN105968487A (en) | 2016-09-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111954694A (en) * | 2018-04-20 | 2020-11-17 | 住友电气工业株式会社 | Resin composition, inorganic filler, direct current cable, and method for producing direct current cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1417249A (en) * | 2002-12-13 | 2003-05-14 | 清华大学 | Composite polyolefin/sio2 nano particle and its prepn |
| CN1654488A (en) * | 2005-01-26 | 2005-08-17 | 清华大学 | Process for preparing reaction functional macromolecule/Al2O3 nano composite particles |
| CN104910495A (en) * | 2015-06-19 | 2015-09-16 | 国网智能电网研究院 | High-voltage direct-current cable material and preparation method thereof |
-
2016
- 2016-04-20 CN CN201610246890.3A patent/CN105968487A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1417249A (en) * | 2002-12-13 | 2003-05-14 | 清华大学 | Composite polyolefin/sio2 nano particle and its prepn |
| CN1654488A (en) * | 2005-01-26 | 2005-08-17 | 清华大学 | Process for preparing reaction functional macromolecule/Al2O3 nano composite particles |
| CN104910495A (en) * | 2015-06-19 | 2015-09-16 | 国网智能电网研究院 | High-voltage direct-current cable material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111954694A (en) * | 2018-04-20 | 2020-11-17 | 住友电气工业株式会社 | Resin composition, inorganic filler, direct current cable, and method for producing direct current cable |
| CN111954694B (en) * | 2018-04-20 | 2023-01-10 | 住友电气工业株式会社 | Resin composition, inorganic filler, direct current cable, and method for producing direct current cable |
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