CN106496728A - A kind of preparation method of high-voltage cable insulating material - Google Patents
A kind of preparation method of high-voltage cable insulating material Download PDFInfo
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- CN106496728A CN106496728A CN201610870315.0A CN201610870315A CN106496728A CN 106496728 A CN106496728 A CN 106496728A CN 201610870315 A CN201610870315 A CN 201610870315A CN 106496728 A CN106496728 A CN 106496728A
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- insulating material
- voltage cable
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- cable insulating
- polyethylene
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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
-
- 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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- 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
-
- 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
Abstract
The present invention relates to a kind of preparation method of high-voltage cable insulating material, belongs to insulant preparing technical field.The present invention is first with materials such as magnesium nitrate solution, ammonia as raw material, prepare nano-sized magnesium hydroxide, dehydrated alcohol is recycled to carry out purification and calcining to which, obtain active nano magnesium oxide, then carry out mixing banburying with the materials such as dried polyethylene from high pressure process, age resistor, paraffin are washed by which, compound is obtained, finally molding on vulcanizer, you can obtain high-voltage cable insulating material.High-voltage cable insulating material prepared by the present invention passes through to add active nano magnesium oxide in polyethylene from high pressure process, space charge can be effectively suppressed to gather, improve breakdown strength and specific insulation, suppress electric branch growth, improve the electric property of insulant, there is higher heat resistance, be widely portable in high tension cable.
Description
Technical field
The present invention relates to a kind of preparation method of high-voltage cable insulating material, belongs to insulant preparing technical field.
Background technology
Technology of HVDC based Voltage Source Converter is the high voltage dc transmission technology based on voltage source converter, is to control skill with PWM
Art and Development of Power Electronic Technology and the VSC-HVDC technology come.Compared to Traditional DC technology of transmission of electricity, flexible direct current is defeated
Power technology has higher controllability, disturbance can be had and faster be responded, more easily control circuit trend, while more
Suitable middle low power and long distance power transmission, therefore Technology of HVDC based Voltage Source Converter power in urban distribution network, new-energy grid-connected, distributed
The aspects such as electricity generation grid-connecting, island with power, Asynchronous Communication Power System Interconnection have very strong using value and application prospect.
The cable insulation material for using at present typically using polyvinyl resin as matrix material, operating temperature 70 DEG C with
Descend and electric property is limited, so applying in general to mesolow cable.And crosslinked polyethylene has preferable hot property and machinery
Performance, can bear higher operating temperature and electric field intensity.Single crosslinked polyethylene is used as a kind of thermosets, it is difficult to reclaim
Utilize, it is difficult to degrade, economical poor.The conventional method for processing crosslinking polyethylene-insulated cable insulation waste material at present is to burn, but
Crosslinked polyethylene can produce a lot of harmful gass pollution environment in combustion.
Content of the invention
The technical problem to be solved：For the cable insulation material operating temperature for using at present below 70 DEG C
And electric property is limited, it is adaptable to the problem of mesolow cable, the present invention is first with materials such as magnesium nitrate solution, ammonia as former material
Material, prepares nano-sized magnesium hydroxide, recycles dehydrated alcohol to carry out purification and calcining to which, obtains active nano magnesium oxide,
Then carry out mixing banburying with the materials such as dried polyethylene from high pressure process, age resistor, paraffin are washed by which, obtain compound, most
Molding on vulcanizer afterwards, you can obtain high-voltage cable insulating material.The present invention prepare high-voltage cable insulating material pass through to
Add active nano magnesium oxide in polyethylene from high pressure process, can effectively suppress space charge to gather, improve breakdown strength and volume electricity
Resistance rate, suppresses electric branch growth, improves the electric property of insulant, with higher heat resistance, be widely portable to
In high tension cable.
For solving above-mentioned technical problem, the technical solution used in the present invention is：
（1）80～100mL mass fractions are measured for 20% magnesium nitrate solution, 80～100mL mass fractions are 20% ammonia, 6～
10mL dehydrated alcohol, 0.5～1.5g carbamide, 0.08～0.12g polyvinyl alcohol 200 load in reactor, with 300～400r/min
Stirring 5～8min of mixing, and 150～160 DEG C are heated to, 5～8h of hydro-thermal reaction, subsequent sucking filtration, and it is washed with deionized filter
Slag 3～5 times, then with absolute ethanol washing filtering residue 2～3 times, obtain nano-sized magnesium hydroxide；
（2）During above-mentioned nano-sized magnesium hydroxide is added to 50～80mL dehydrated alcohol, with 300W ultrasonic echographies dispersion 10～
15min, then continues at centrifugation in centrifuge, collects precipitation, precipitation is placed in drying baker, dries at 105～110 DEG C
To constant weight, dried nano-sized magnesium hydroxide is obtained, and is placed in Muffle furnace, 600～800 DEG C are warming up to 20 DEG C/min,
Keeping temperature calcines 2～3h, obtains active nano magnesium oxide；
（3）60～70g polyethylene from high pressure processes are weighed, with absolute ethanol washing 2～3 times, the polyethylene from high pressure process that cleans vacuum is placed in
In drying baker, 10～12h is dried at 70～80 DEG C, be subsequently filled in banbury, and sequentially add 1～3g age resistor 445,3
～5g paraffin, the above-mentioned active nano magnesium oxide of 1～2g, 1～3g silane resin acceptor kh-550s, 3～5g barium stearates, 110～
8～10min is kneaded at 120 DEG C, compound is obtained；
（4）Above-mentioned compound is injected in 80～100 DEG C of moulds, and mould is placed on vulcanizing press, at 150～160 DEG C
3～5min of lower preheating, aerofluxuss 3～5 times, 5～8min of pressurize under 10～12MPa pressure are then cooled to room temperature, and stand 10
～12h, obtains high-voltage cable insulating material.
High-voltage cable insulating material tensile strength >=24MPa prepared by the present invention, elongation at break >=530%, insulation are strong
Spend for 23.2～25.7kV mm-1, specific insulation >=1.5 × 1015Ω m, heat resistance reach more than 176 DEG C.
Compared with additive method, Advantageous Effects are the present invention：
（1）The present invention prepare high-voltage cable insulating material have higher heat resistance, working stability up to more than 176 DEG C,
Can be widely applied in high-voltage cable；
（2）High-voltage cable insulating material decomposition easy to be recycled and easy prepared by the present invention, will not be to environment, ring
Protect；
（3）High-voltage cable insulating material preparation process prepared by the present invention is simple, with low cost.
Specific embodiment
80～100mL mass fraction is measured first for 20% magnesium nitrate solution, and 80～100mL mass fractions are 20% ammonia, 6
～10mL dehydrated alcohol, 0.5～1.5g carbamide, 0.08～0.12g polyvinyl alcohol 200 load in reactor, with 300～400r/
Min stirring 5～8min of mixing, and 150～160 DEG C are heated to, 5～8h of hydro-thermal reaction, subsequent sucking filtration, and be washed with deionized
Filtering residue 3～5 times, then with absolute ethanol washing filtering residue 2～3 times, obtain nano-sized magnesium hydroxide；Again above-mentioned nano-sized magnesium hydroxide is added
Into 50～80mL dehydrated alcohol, 10～15min is disperseed with 300W ultrasonic echographies, centrifugation in centrifuge is then continued at,
Precipitation is collected, precipitation is placed in drying baker, dried to constant weight at 105～110 DEG C, obtain dried nano-sized magnesium hydroxide,
And be placed in Muffle furnace, 600～800 DEG C are warming up to 20 DEG C/min, keeping temperature calcines 2～3h, obtains active nano oxygen
Change magnesium；60～70g polyethylene from high pressure processes are weighed, with absolute ethanol washing 2～3 times, the polyethylene from high pressure process that cleans is placed in vacuum and is done
In dry case, dry 10～12h at 70～80 DEG C, be subsequently filled in banbury, and sequentially add 1～3g age resistor 445,3～
5g paraffin, the above-mentioned active nano magnesium oxide of 1～2g, 1～3g silane resin acceptor kh-550s, 3～5g barium stearates, 110～120
8～10min is kneaded at DEG C, compound is obtained；Finally above-mentioned compound is injected in 80～100 DEG C of moulds, and mould is placed in flat
On plate vulcanizer, 3～5min of preheating at 150～160 DEG C, aerofluxuss 3～5 times, 5～8min of pressurize under 10～12MPa pressure,
Room temperature is then cooled to, and stands 10～12h, obtain high-voltage cable insulating material.
Example 1
100mL mass fraction is measured first for 20% magnesium nitrate solution, and 100mL mass fractions are 20% ammonia, 10mL dehydrated alcohol,
1.5g carbamide, 0.12g polyvinyl alcohol 200 load in reactor, with 400r/min stirring mixing 8min, and are heated to 160 DEG C, water
Thermal response 8h, subsequent sucking filtration, and be washed with deionized filtering residue 5 times, then with absolute ethanol washing filtering residue 3 times, obtain a nanometer hydrogen-oxygen
Change magnesium；During again add above-mentioned nano-sized magnesium hydroxide to 80mL dehydrated alcohol, 15min is disperseed with 300W ultrasonic echographies, subsequently
Centrifugation in centrifuge is proceeded to, precipitation is collected, precipitation is placed in drying baker, dried to constant weight at 110 DEG C, after must drying
Nano-sized magnesium hydroxide, and be placed in Muffle furnace, be warming up to 800 DEG C with 20 DEG C/min, keeping temperature calcines 3h, obtains active
Nano magnesia；70g polyethylene from high pressure processes are weighed, with absolute ethanol washing 3 times, the polyethylene from high pressure process that cleans vacuum drying is placed in
In case, 12h is dried at 80 DEG C, be subsequently filled in banbury, and sequentially add 3g age resistor 445,5g paraffin, the above-mentioned activity of 2g
Nano magnesia, 3g silane resin acceptor kh-550s, 5g barium stearates at 120 DEG C knead 10min, obtain compound；Finally will be upper
State compound to inject in 100 DEG C of moulds, and mould is placed on vulcanizing press, preheating 5min at 160 DEG C, aerofluxuss 5 times,
Pressurize 8min under 12MPa pressure, is then cooled to room temperature, and stands 12h, obtains high-voltage cable insulating material.
High-voltage cable insulating material tensile strength prepared by the present invention is 24MPa, and elongation at break is 530%, and insulation is strong
Spend for 25.7kV mm-1, specific insulation is 1.5 × 1015Ω m, heat resistance reach 178 DEG C.
Example 2
80mL mass fraction is measured first for 20% magnesium nitrate solution, and 80mL mass fractions are 20% ammonia, 6mL dehydrated alcohol,
0.5g carbamide, 0.08g polyvinyl alcohol 200 load in reactor, with 300r/min stirring mixing 5min, and are heated to 150 DEG C, water
Thermal response 5h, subsequent sucking filtration, and be washed with deionized filtering residue 3 times, then with absolute ethanol washing filtering residue 2 times, obtain a nanometer hydrogen-oxygen
Change magnesium；During again add above-mentioned nano-sized magnesium hydroxide to 50mL dehydrated alcohol, 10min is disperseed with 300W ultrasonic echographies, subsequently
Centrifugation in centrifuge is proceeded to, precipitation is collected, precipitation is placed in drying baker, dried to constant weight at 105 DEG C, after must drying
Nano-sized magnesium hydroxide, and be placed in Muffle furnace, be warming up to 600 DEG C with 20 DEG C/min, keeping temperature calcines 2h, obtains active
Nano magnesia；60g polyethylene from high pressure processes are weighed, with absolute ethanol washing 2 times, the polyethylene from high pressure process that cleans vacuum drying is placed in
In case, 10h is dried at 70 DEG C, be subsequently filled in banbury, and sequentially add 1g age resistor 445,3g paraffin, the above-mentioned activity of 1g
Nano magnesia, 1g silane resin acceptor kh-550s, 3g barium stearates at 110 DEG C knead 8min, obtain compound；Finally will be upper
State compound to inject in 80 DEG C of moulds, and mould is placed on vulcanizing press, preheating 3min at 150 DEG C, aerofluxuss 3 times,
Pressurize 5min under 10MPa pressure, is then cooled to room temperature, and stands 10h, obtains high-voltage cable insulating material.
High-voltage cable insulating material tensile strength prepared by the present invention is 25MPa, and elongation at break is 534%, and insulation is strong
Spend for 23.2kV mm-1, specific insulation is 1.7 × 1015Ω m, heat resistance reach 178 DEG C.
Example 3
90mL mass fraction is measured first for 20% magnesium nitrate solution, and 90mL mass fractions are 20% ammonia, 7mL dehydrated alcohol,
1.2g carbamide, 0.09g polyvinyl alcohol 200 load in reactor, with 350r/min stirring mixing 7min, and are heated to 155 DEG C, water
Thermal response 7h, subsequent sucking filtration, and be washed with deionized filtering residue 4 times, then with absolute ethanol washing filtering residue 2 times, obtain a nanometer hydrogen-oxygen
Change magnesium；During again add above-mentioned nano-sized magnesium hydroxide to 55mL dehydrated alcohol, 12min is disperseed with 300W ultrasonic echographies, subsequently
Centrifugation in centrifuge is proceeded to, precipitation is collected, precipitation is placed in drying baker, dried to constant weight at 107 DEG C, after must drying
Nano-sized magnesium hydroxide, and be placed in Muffle furnace, be warming up to 700 DEG C with 20 DEG C/min, keeping temperature calcines 2h, obtains active
Nano magnesia；65g polyethylene from high pressure processes are weighed, with absolute ethanol washing 3 times, the polyethylene from high pressure process that cleans vacuum drying is placed in
In case, 11h is dried at 75 DEG C, be subsequently filled in banbury, and sequentially add 2g age resistor 445,4g paraffin, the above-mentioned activity of 1g
Nano magnesia, 2g silane resin acceptor kh-550s, 4g barium stearates at 114 DEG C knead 9min, obtain compound；Finally will be upper
State compound to inject in 90 DEG C of moulds, and mould is placed on vulcanizing press, preheating 4min at 155 DEG C, aerofluxuss 4 times,
Pressurize 7min under 11MPa pressure, is then cooled to room temperature, and stands 11h, obtains high-voltage cable insulating material.
High-voltage cable insulating material tensile strength prepared by the present invention is 27MPa, and elongation at break is 538%, and insulation is strong
Spend for 24.6kV mm-1, specific insulation is 1.8 × 1015Ω m, heat resistance reach 176 DEG C.
Claims (1)
1. a kind of preparation method of high-voltage cable insulating material, it is characterised in that concrete preparation process is：
（1）80～100mL mass fractions are measured for 20% magnesium nitrate solution, 80～100mL mass fractions are 20% ammonia, 6～
10mL dehydrated alcohol, 0.5～1.5g carbamide, 0.08～0.12g polyvinyl alcohol 200 load in reactor, with 300～400r/min
Stirring 5～8min of mixing, and 150～160 DEG C are heated to, 5～8h of hydro-thermal reaction, subsequent sucking filtration, and it is washed with deionized filter
Slag 3～5 times, then with absolute ethanol washing filtering residue 2～3 times, obtain nano-sized magnesium hydroxide；
（2）During above-mentioned nano-sized magnesium hydroxide is added to 50～80mL dehydrated alcohol, with 300W ultrasonic echographies dispersion 10～
15min, then continues at centrifugation in centrifuge, collects precipitation, precipitation is placed in drying baker, dries at 105～110 DEG C
To constant weight, dried nano-sized magnesium hydroxide is obtained, and is placed in Muffle furnace, 600～800 DEG C are warming up to 20 DEG C/min,
Keeping temperature calcines 2～3h, obtains active nano magnesium oxide；
（3）60～70g polyethylene from high pressure processes are weighed, with absolute ethanol washing 2～3 times, the polyethylene from high pressure process that cleans vacuum is placed in
In drying baker, 10～12h is dried at 70～80 DEG C, be subsequently filled in banbury, and sequentially add 1～3g age resistor 445,3
～5g paraffin, the above-mentioned active nano magnesium oxide of 1～2g, 1～3g silane resin acceptor kh-550s, 3～5g barium stearates, 110～
8～10min is kneaded at 120 DEG C, compound is obtained；
（4）Above-mentioned compound is injected in 80～100 DEG C of moulds, and mould is placed on vulcanizing press, at 150～160 DEG C
3～5min of lower preheating, aerofluxuss 3～5 times, 5～8min of pressurize under 10～12MPa pressure are then cooled to room temperature, and stand 10
～12h, obtains high-voltage cable insulating material.
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| CN201610870315.0A CN106496728A (en) | 2016-10-06 | 2016-10-06 | A kind of preparation method of high-voltage cable insulating material |
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| CN201610870315.0A CN106496728A (en) | 2016-10-06 | 2016-10-06 | A kind of preparation method of high-voltage cable insulating material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107117854A (en) * | 2017-04-21 | 2017-09-01 | 戴琪 | A kind of preparation method of concrete pump-feed agent |
| CN111777829A (en) * | 2020-07-02 | 2020-10-16 | 安徽电缆股份有限公司 | Insulating PVC material for cable material and preparation method thereof |
| CN115458212A (en) * | 2022-09-15 | 2022-12-09 | 深圳市米韵科技有限公司 | Insulating and voltage-resistant material for cable and preparation method thereof |
Citations (1)
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|---|---|---|---|---|
| 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
- 2016-10-06 CN CN201610870315.0A patent/CN106496728A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Non-Patent Citations (1)
| Title |
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| 刘吉平 田军 编著: "《纺织科学中的纳米技术》", 31 May 2003, 中国纺织出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107117854A (en) * | 2017-04-21 | 2017-09-01 | 戴琪 | A kind of preparation method of concrete pump-feed agent |
| CN111777829A (en) * | 2020-07-02 | 2020-10-16 | 安徽电缆股份有限公司 | Insulating PVC material for cable material and preparation method thereof |
| CN115458212A (en) * | 2022-09-15 | 2022-12-09 | 深圳市米韵科技有限公司 | Insulating and voltage-resistant material for cable and preparation method thereof |
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