CN101430954A - Production method for composite insulator silicon rubber jacket - Google Patents
Production method for composite insulator silicon rubber jacket Download PDFInfo
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- CN101430954A CN101430954A CNA2008102326753A CN200810232675A CN101430954A CN 101430954 A CN101430954 A CN 101430954A CN A2008102326753 A CNA2008102326753 A CN A2008102326753A CN 200810232675 A CN200810232675 A CN 200810232675A CN 101430954 A CN101430954 A CN 101430954A
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Abstract
The invention relates to a preparation method used for a composite insulator silicone rubber sheath, comprising the steps as follows: firstly, according to weight percentage, 35-46% of silicon rubber, 12-18% of white carbon, 0.2-0.4% of control agent, 0.08-0.1% of coupling agent and 40-48% of flame retardant are weighed, mixed and vacuumed so as to prepare masterbatch; subsequently, the masterbatch is weighed, colorant and curing agent are added into the masterbatch and mixed; subsequently, the mixture is stayed for more than 24 hours, thus preparing the silicon rubber compound which is subsequently injection-formed to prepare the composite insulator silicone rubber sheath. The composite insulator silicone rubber sheath prepared by the preparation method can be effectively bonded to a ceramic core rod; furthermore, compared with the traditional method, the adhesion strength of the silicon rubber sheath and the ceramic core rod is greatly improved; the composite insulator silicone rubber sheath prepared by the preparation method improves all electric performances of composite column insulator silicone rubber sheath parachute skirt, and improves the running reliability of the composite insulator.
Description
Technical field
The invention belongs to high pressure, extra-high voltage electric power composite insulator manufacturing field, relate to a kind of preparation method of silicon rubber, especially a kind of preparation method of used in composite insulator silicon rubber.
Background technology
At present, high pressure and superhigh pressure with post insulator also mainly based on porcelain strut insulator, composite post insulator is a kind of insulator that grew up in recent years, it mainly is made up of interior insulator, flange, silicone rubber jacket etc., and its forming method mainly contains following several because of the difference of insulator difference to some extent:
A kind of be by the epoxy resin plug be interior insulator and flange by behind the mucilage binding, by the sulfuration of injection vulcanizer, form silastic material again in the plug outside.
Another kind method is that insulator and flange by the sulfuration of injection vulcanizer, form silastic material in the plug outside by behind the mucilage binding in being done by the porcelain core rod.
More than two kinds of composite post insulators in manufacture process, have following defective:
1. when being interior insulator with epoxy resin because its bending resistance and anti-subdue relatively poor, the post composite insulator of more application and 220KV, it is restricted in the application of high pressure and superhigh pressure power transmission and distribution;
2. the porcelain core post composite insulator is owing to have the two-fold advantage of porcelain pillar and composite insulator, more and more receive publicity, particularly in the application of high pressure and superhigh pressure power transmission and distribution, but, since its with the forming process of heat vulcanized silicone rubber in, the porcelain core rod is often bonding bad with silicon rubber, produce the interface, the reliability of insulator in running reduced greatly, have a strong impact on the operation of electric equipment, every performance of external insulation silicone rubber jacket full skirt can not satisfy the service requirement of high pressure and superhigh pressure, has a strong impact on the reliability of electric equipment.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art, a kind of preparation method of used in composite insulator silicon rubber is provided, this method has not only improved the adhesion strength of porcelain core rod with heat vulcanized silicone rubber, and improved every electric property of composite post insulator silicone rubber jacket full skirt, improved the operational reliability of composite post insulator.
The objective of the invention is to solve by the following technical programs:
The preparation method of this composite insulator silicon rubber jacket comprises the steps:
1) at first takes by weighing 35%～46% silicon rubber, 12%～18% white carbon, 0.2%～0.4% controlling agent, 0.08%～0.1% coupling agent and 40%～48% fire retardant respectively by the percentage by weight of total weight;
2) silicon rubber is put into kneader, add white carbon black, controlling agent and coupling agent after mixing 5～10 minutes more at twice, add half of each component the first time, for the first time add the back add again after mixing 30-50 minute each component remaining half, add fire retardant after mixing 60～100 minutes more at twice, each 1/2 amount that adds, be 30-50 minute twice blanking time, add fire retardant after 50～80 minutes, vacuumized 10～30 minutes, when vacuum degree picks up counting Open valve pressure release then during to-0.07mpa, taking-up was parked more than 8 hours, promptly made rubber master batch;
3) weight portion according to total component takes by weighing rubber master batch 90～93%, adds colouring agent 2～5%, adds vulcanizing agent 4～8% again, parks more than 24 hours after mixing 30～50 minutes, promptly makes silicon rubber gross rubber;
4) silicon rubber gross rubber that makes is inserted in the injection moulding vulcanization machine, with 50 ℃～75 ℃ plasticizings 30～60 minutes;
5) will be coated with the porcelain core rod that is brushed with bonding agent and put into mould, the temperature of injection moulding vulcanization machine will be set at 140～170 ℃, pressure 150～180KN/m
2, the start injection sulfuration;
6) clock from beginning sulfuration, product is taken out in die sinking after 5～7 hours, promptly makes composite insulator silicon rubber jacket.
Above-mentioned steps 1) controlling agent is a hydroxy silicon oil in, and the quality that its hydroxyl accounts for whole molecular weight in molecule must not be lower than 8%; Coupling agent is r-glycidyl propyl trimethoxy silicane or vinyl three-(2-methoxy ethoxy) silane, the mass concentration of described r-glycidyl propyl trimethoxy silicane is not less than 95%, and the mass concentration of described vinyl three-(2-methoxy ethoxy) silane is not less than 95%; Fire retardant is that chemical method is produced aluminium hydroxide, and the following particle diameter particle of its 4um is not less than 75%.Above-mentioned colouring agent is iron oxide red, carbon black or light blue, and vulcanizing agent is peroxidating two isobutylbenzenes or two-2.5.
The preparation method of composite insulator silicon rubber jacket of the present invention has following beneficial effect: the composite insulator silicon rubber jacket that (1) adopts this kind preparation method to make can have effective adhesive with the porcelain core rod, and compare with conventional method, the adhesion strength of silicone rubber jacket and porcelain core rod is greatly improved;
(2) composite insulator silicon rubber jacket of this method preparation has improved every electric property of composite post insulator silicone rubber jacket full skirt, has improved the operational reliability of composite insulator.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail:
Embodiment 1
1) at first takes by weighing 35% silicon rubber, 18% white carbon, 0.2% controlling agent, 0.08% coupling agent and 46.72% fire retardant respectively by the percentage by weight of total weight; Controlling agent is selected hydroxy silicon oil for use, and its hydroxy radical content must not be lower than 8%, and promptly the hydroxyl percentage that accounts for molecular weight must not be lower than 8%; Described coupling agent is a r-glycidyl propyl trimethoxy silicane, and wherein the concentration of r-glycidyl propyl trimethoxy silicane is not less than 95%, and the content of described vinyl three-(2-methoxy ethoxy) silane is not less than 95%.Described fire retardant is that chemical method is produced aluminium hydroxide, and the following particle diameter particle of its 4um is not less than 75%.
2) silicon rubber is put into kneader, add white carbon black, controlling agent and coupling agent after mixing 5 minutes more at twice, add half of each component the first time, for the first time add the back add again after mixing 30 minutes each component remaining half, add fire retardant after mixing 60 minutes more at twice, each 1/2 amount that adds, be 30 minutes twice blanking time, add fire retardant after 50 minutes, vacuumized 30 minutes, when vacuum degree picks up counting during to-0.07mpa, vacuumize finish after the Open valve pressure release, taking-up was parked more than 8 hours, promptly made rubber master batch
3) weight portion according to total component takes by weighing rubber master batch 90%, adds 5% iron oxide red, adds 5% peroxidating two isobutylbenzenes again, parks more than 24 hours after mixing 30 minutes, promptly makes silicon rubber gross rubber;
4) silicon rubber gross rubber that makes is inserted in the injection moulding vulcanization machine, with 50 ℃ of plasticizings 60 minutes;
5) will be coated with the porcelain core rod that is brushed with bonding agent and put into mould, the temperature of injection moulding vulcanization machine will be set at 140 ℃, pressure 150KN/m
2, the start injection sulfuration;
6) clock from beginning sulfuration, product is taken out in die sinking after 5 hours, promptly makes composite insulator silicon rubber jacket.
Embodiment 2
1) at first takes by weighing 46% silicon rubber, 12% white carbon, 0.4% controlling agent, 0.09% coupling agent and 41.51% fire retardant respectively by the percentage by weight of total weight; Controlling agent is selected hydroxy silicon oil for use, and its hydroxy radical content must not be lower than 8%; Described coupling agent is r-glycidyl propyl trimethoxy silicane or vinyl three-(2-methoxy ethoxy) silane, the mass concentration of described r-glycidyl propyl trimethoxy silicane is not less than 95%, and the mass concentration of described vinyl three-(2-methoxy ethoxy) silane is not less than 95%.Described fire retardant is that chemical method is produced aluminium hydroxide, and the following particle diameter particle of its 4um is not less than 75%.
2) silicon rubber is put into kneader, add white carbon black, controlling agent and coupling agent after mixing 8 minutes more at twice, add half of each component the first time, for the first time add the back add again after mixing 40 minutes each component remaining half, add fire retardant after mixing 80 minutes more at twice, each 1/2 amount that adds, be 40 minutes twice blanking time, add fire retardant after 60 minutes, vacuumized 20 minutes, when vacuum degree picks up counting Open valve pressure release then during to-0.07mpa, taking-up was parked more than 8 hours, promptly made rubber master batch;
3) weight portion according to total component takes by weighing rubber master batch 93%, adds 2% carbon black, add again 5% two-2.5, park more than 24 hours after mixing 40 minutes, promptly make silicon rubber gross rubber;
4) silicon rubber gross rubber that makes is inserted in the injection moulding vulcanization machine, with 75 ℃ of plasticizings 30 minutes;
5) will be coated with the porcelain core rod that is brushed with bonding agent and put into mould, the temperature of injection moulding vulcanization machine will be set at 160 ℃, pressure 180KN/m
2, the start injection sulfuration;
6) clock from beginning sulfuration, product is taken out in die sinking after 6 hours, promptly makes composite insulator silicon rubber jacket.
Embodiment 3
1) at first takes by weighing 44.5% silicon rubber, 15% white carbon, 0.4% controlling agent, 0.1% coupling agent and 40% fire retardant respectively by the percentage by weight of total weight; Controlling agent is selected hydroxy silicon oil for use, and its hydroxy radical content must not be lower than 8%; Described coupling agent is r-glycidyl propyl trimethoxy silicane or vinyl three-(2-methoxy ethoxy) silane, the mass concentration of described r-glycidyl propyl trimethoxy silicane is 95%, and the mass concentration of described vinyl three-(2-methoxy ethoxy) silane is 95%.Described fire retardant is that chemical method is produced aluminium hydroxide, and the following particle diameter particle of its 4um is not less than 75%.
2) silicon rubber is put into kneader, add white carbon black, controlling agent and coupling agent after mixing 10 minutes more at twice, add half of each component the first time, for the first time add the back add again after mixing 50 minutes each component remaining half, add fire retardant more at twice after mixing 100 minutes, add 1/2 amount at every turn, be 50 minutes twice blanking time, add fire retardant after 80 minutes, vacuumized 30 minutes, when vacuum degree picks up counting during to-0.07mpa.Open valve pressure release is then taken out and is parked more than 8 hours, promptly makes rubber master batch;
3) weight portion according to total component takes by weighing rubber master batch 90%, adds 2% light blue, adds 8% peroxidating two isobutylbenzenes again, parks more than 24 hours after mixing 50 minutes, promptly makes silicon rubber gross rubber;
4) silicon rubber gross rubber that makes is inserted in the injection moulding vulcanization machine, with 75 ℃ of plasticizings 60 minutes;
5) will be coated with the porcelain core rod that is brushed with bonding agent and put into mould, the temperature of injection moulding vulcanization machine will be set at 170 ℃, pressure 180KN/m
2, the start injection sulfuration;
6) clock from beginning sulfuration, product is taken out in die sinking after 7 hours, promptly makes composite insulator silicon rubber jacket.
Embodiment 4
1) at first takes by weighing 35.7% silicon rubber, 16% white carbon, 0.2% controlling agent, 0.1% coupling agent and 48% fire retardant respectively by the percentage by weight of total weight; Controlling agent is selected hydroxy silicon oil for use, and its hydroxy radical content must not be lower than 8%; Described coupling agent is r-glycidyl propyl trimethoxy silicane or vinyl three-(2-methoxy ethoxy) silane, the mass concentration of described r-glycidyl propyl trimethoxy silicane is 98%, and the mass concentration of described vinyl three-(2-methoxy ethoxy) silane is 98%.Described fire retardant is that chemical method is produced aluminium hydroxide, and the following particle diameter particle of its 4um is not less than 75%.
2) silicon rubber is put into kneader, add white carbon black, controlling agent and coupling agent after mixing 5 minutes more at twice, add half of each component the first time, for the first time add the back add again after mixing 30 minutes each component remaining half, add fire retardant more at twice after mixing 60 minutes, add 1/2 amount at every turn, be 30 minutes twice blanking time, add fire retardant after 50 minutes, vacuumized 10 minutes, when vacuum degree picks up counting during to-0.07mpa.Open valve pressure release is then taken out and is parked more than 8 hours, promptly makes rubber master batch;
3) weight portion according to total component takes by weighing rubber master batch 92%, adds 4% carbon black, adds 4% peroxidating two isobutylbenzenes again, parks more than 24 hours after mixing 30 minutes, promptly makes silicon rubber gross rubber;
4) silicon rubber gross rubber that makes is inserted in the injection moulding vulcanization machine, with 50 ℃ of plasticizings 60 minutes;
5) will be coated with the porcelain core rod that is brushed with bonding agent and put into mould, the temperature of injection moulding vulcanization machine will be set at 150 ℃, pressure 170KN/m
2, the start injection sulfuration;
6) clock from beginning sulfuration, product is taken out in die sinking after 6 hours, promptly makes composite insulator silicon rubber jacket.
Embodiment 5
1) at first takes by weighing 41.61% silicon rubber, 14% white carbon, 0.3% controlling agent, 0.09% coupling agent and 44% fire retardant respectively by the percentage by weight of total weight; Controlling agent is selected hydroxy silicon oil for use, and its hydroxy radical content must not be lower than 8%; Described coupling agent is r-glycidyl propyl trimethoxy silicane or vinyl three-(2-methoxy ethoxy) silane, the mass concentration of described r-glycidyl propyl trimethoxy silicane is 95%, and the mass concentration of described vinyl three-(2-methoxy ethoxy) silane is 95%.Described fire retardant is that chemical method is produced aluminium hydroxide, and the following particle diameter particle of its 4um is not less than 75%.
2) silicon rubber is put into kneader, add white carbon black, controlling agent and coupling agent after mixing 10 minutes more at twice, add half of each component the first time, for the first time add the back add again after mixing 45 minutes each component remaining half, add fire retardant after mixing 90 minutes more at twice, each 1/2 amount that adds, be 45 minutes twice blanking time, add fire retardant after 65 minutes, vacuumized 25 minutes, when vacuum degree picks up counting Open valve pressure release then during to-0.07mpa, taking-up was parked more than 8 hours, promptly made rubber master batch;
3) weight portion according to total component takes by weighing rubber master batch 91%, adds 3% iron oxide red, add again 6% two-2.5, park more than 24 hours after mixing 45 minutes, promptly make silicon rubber gross rubber;
4) silicon rubber gross rubber that makes is inserted in the injection moulding vulcanization machine, with 60 ℃ of plasticizings 50 minutes;
5) will be coated with the porcelain core rod that is brushed with bonding agent and put into mould, the temperature of injection moulding vulcanization machine will be set at 160 ℃, pressure 175KN/m
2, the start injection sulfuration;
6) clock from beginning sulfuration, product is taken out in die sinking after 7 hours, promptly makes composite insulator silicon rubber jacket.
Embodiment 6
1) at first takes by weighing 43% silicon rubber, 12% white carbon, 0.3% controlling agent, 0.08% coupling agent and 44.62% fire retardant respectively by the percentage by weight of total amount; Controlling agent is selected hydroxy silicon oil for use, and its hydroxy radical content must not be lower than 8%; Described coupling agent is r-glycidyl propyl trimethoxy silicane or vinyl three-(2-methoxy ethoxy) silane, the mass concentration of described r-glycidyl propyl trimethoxy silicane is 95%, and the mass concentration of described vinyl three-(2-methoxy ethoxy) silane is 95%.Described fire retardant is that chemical method is produced aluminium hydroxide, and the following particle diameter particle of its 4um is not less than 75%.
2) silicon rubber is put into kneader, add white carbon black, controlling agent and coupling agent after mixing 10 minutes more at twice, add half of each component the first time, for the first time add the back add again after mixing 45 minutes each component remaining half, add fire retardant after mixing 90 minutes more at twice, each 1/2 amount that adds, be 45 minutes twice blanking time, add fire retardant after 65 minutes, vacuumized 25 minutes, when vacuum degree picks up counting Open valve pressure release then during to-0.07mpa, taking-up was parked more than 8 hours, promptly made rubber master batch;
3) weight portion according to total component takes by weighing rubber master batch 91%, adds 2% light blue, adds 7% oxidation two isobutylbenzenes again, parks more than 24 hours after mixing 45 minutes, promptly makes silicon rubber gross rubber;
4) silicon rubber gross rubber that makes is inserted in the injection moulding vulcanization machine, with 60 ℃ of plasticizings 50 minutes;
5) will be coated with the porcelain core rod that is brushed with bonding agent and put into mould, the temperature of injection moulding vulcanization machine will be set at 160 ℃, pressure 175KN/m
2, the start injection sulfuration;
6) clock from beginning sulfuration, product is taken out in die sinking after 7 hours, promptly makes composite insulator silicon rubber jacket.
The composite insulator silicon rubber jacket that adopts this kind preparation method to make can have effective adhesive with porcelain core rod, And compare with conventional method, the adhesion strength of silicone rubber jacket and porcelain core rod is greatly improved; And the party The standby composite insulator silicon rubber jacket of legal system has improved the every of composite post insulator silicone rubber jacket full skirt Electric property has improved the operational reliability of composite insulator.
Claims (4)
1. the preparation method of a composite insulator silicon rubber jacket is characterized in that, comprises the steps:
1) at first takes by weighing 35%～46% silicon rubber, 12%～18% white carbon, 0.2%～0.4% controlling agent, 0.08%～0.1% coupling agent and 40%～48% fire retardant respectively by the percentage by weight of total weight; Described controlling agent is a hydroxy silicon oil;
2) silicon rubber is put into kneader, add white carbon black, controlling agent and coupling agent after mixing 5～10 minutes more at twice, add half of each component the first time, for the first time add the back add again after mixing 30-50 minute each component remaining half, add fire retardant after mixing 60～100 minutes more at twice, each 1/2 amount that adds, be 30-50 minute twice blanking time, add fire retardant after 50～80 minutes, vacuumized 10～30 minutes, when vacuum degree picks up counting Open valve pressure release then during to-0.07mpa, taking-up was parked more than 8 hours, promptly made rubber master batch;
3) take by weighing rubber master batch 90～93% according to total ingredients weight parts, add colouring agent 2～5%, add vulcanizing agent 4～8% again, park more than 24 hours after mixing 30～50 minutes, promptly make silicon rubber gross rubber;
4) silicon rubber gross rubber that makes is inserted in the injection moulding vulcanization machine, with 50 ℃～75 ℃ plasticizings 30～60 minutes;
5) will be coated with the porcelain core rod that is brushed with bonding agent and put into mould, the temperature of injection moulding vulcanization machine will be set at 140～170 ℃, pressure 150～180KN/m
2, the start injection sulfuration;
6) clock from beginning sulfuration, product is taken out in die sinking after 5～7 hours, promptly makes composite insulator silicon rubber jacket.
2. the preparation method of composite insulator silicon rubber jacket according to claim 1, it is characterized in that: described coupling agent is r-glycidyl propyl trimethoxy silicane or vinyl three-(2-methoxy ethoxy) silane, the mass concentration of described r-glycidyl propyl trimethoxy silicane is not less than 95%, and the mass concentration of described vinyl three-(2-methoxy ethoxy) silane is not less than 95%.
3. the preparation method of composite insulator silicon rubber jacket according to claim 1 is characterized in that: described fire retardant is that chemical method is produced aluminium hydroxide, and the following particle diameter particle of its 4um is not less than 75%.
4. the preparation method of composite insulator silicon rubber jacket according to claim 1, it is characterized in that: described colouring agent is iron oxide red, carbon black or light blue; Described vulcanizing agent is peroxidating two isobutylbenzenes or two-2.5.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101834042A (en) * | 2010-05-21 | 2010-09-15 | 成都盛帮密封件有限公司 | Process of insulating cap for medium-voltage electrical appliances |
| CN102117674A (en) * | 2011-03-17 | 2011-07-06 | 上海上塑控股（集团）有限公司 | (6-10)KV and (6-10) KV below silicon rubber insulating refractory flat flexible cable |
| CN102964836A (en) * | 2011-08-29 | 2013-03-13 | 深圳市沃尔核材股份有限公司 | Ceramicized silicon rubber, preparation method and application |
| RU2496170C1 (en) * | 2012-02-21 | 2013-10-20 | Общество с ограниченной ответственностью "Инвест-Энерго" | Method for increase of moisture-discharge voltage of high-voltage insulation |
| CN103436030A (en) * | 2013-08-13 | 2013-12-11 | 天长市荣盛有机硅科技有限公司 | High-performance insulator material and preparation method thereof |
| CN104387773A (en) * | 2014-12-04 | 2015-03-04 | 成都锦汇科技有限公司 | Silicone rubber coloring master batch |
| CN104960141A (en) * | 2015-05-18 | 2015-10-07 | 南京电气高压套管有限公司 | Integral body injection molding method of dry-type bushing external insulation liquid silicone rubber (LSR) |
| CN105244141A (en) * | 2015-11-10 | 2016-01-13 | 李聪 | Inflatable transformer |
| CN105802240A (en) * | 2016-03-23 | 2016-07-27 | 华北电力大学 | Silicone rubber composite material for composite insulator |
| CN106373643A (en) * | 2016-08-24 | 2017-02-01 | 宁波华众和创工业设计有限公司 | High-insulativity and high-temperature-resistant cable and manufacturing method therefor |
| CN108129844A (en) * | 2017-11-22 | 2018-06-08 | 新宇电缆集团股份有限公司 | A kind of mine bend resistance cable outer sheath material |
| CN108776214A (en) * | 2017-10-16 | 2018-11-09 | 中国电力科学研究院有限公司武汉分院 | A kind of determination method of excellent electromechanical properties HTV insulating materials curing parameters |
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- 2008-12-11 CN CN2008102326753A patent/CN101430954B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834042A (en) * | 2010-05-21 | 2010-09-15 | 成都盛帮密封件有限公司 | Process of insulating cap for medium-voltage electrical appliances |
| CN101834042B (en) * | 2010-05-21 | 2011-11-30 | 成都盛帮密封件股份有限公司 | Process of insulating cap for medium-voltage electrical appliances |
| CN102117674A (en) * | 2011-03-17 | 2011-07-06 | 上海上塑控股（集团）有限公司 | (6-10)KV and (6-10) KV below silicon rubber insulating refractory flat flexible cable |
| CN102964836A (en) * | 2011-08-29 | 2013-03-13 | 深圳市沃尔核材股份有限公司 | Ceramicized silicon rubber, preparation method and application |
| CN102964836B (en) * | 2011-08-29 | 2014-07-30 | 深圳市沃尔核材股份有限公司 | Ceramicized silicon rubber, preparation method and application |
| RU2496170C1 (en) * | 2012-02-21 | 2013-10-20 | Общество с ограниченной ответственностью "Инвест-Энерго" | Method for increase of moisture-discharge voltage of high-voltage insulation |
| CN103436030A (en) * | 2013-08-13 | 2013-12-11 | 天长市荣盛有机硅科技有限公司 | High-performance insulator material and preparation method thereof |
| CN104387773A (en) * | 2014-12-04 | 2015-03-04 | 成都锦汇科技有限公司 | Silicone rubber coloring master batch |
| CN104960141A (en) * | 2015-05-18 | 2015-10-07 | 南京电气高压套管有限公司 | Integral body injection molding method of dry-type bushing external insulation liquid silicone rubber (LSR) |
| CN105244141A (en) * | 2015-11-10 | 2016-01-13 | 李聪 | Inflatable transformer |
| CN105802240A (en) * | 2016-03-23 | 2016-07-27 | 华北电力大学 | Silicone rubber composite material for composite insulator |
| CN105802240B (en) * | 2016-03-23 | 2018-08-28 | 华北电力大学 | A kind of silicone rubber for composite insulator composite material |
| CN106373643A (en) * | 2016-08-24 | 2017-02-01 | 宁波华众和创工业设计有限公司 | High-insulativity and high-temperature-resistant cable and manufacturing method therefor |
| CN106373643B (en) * | 2016-08-24 | 2017-11-28 | 宁波华众和创工业设计有限公司 | A kind of high-insulativity high-temperature cable and its manufacture method |
| CN108776214A (en) * | 2017-10-16 | 2018-11-09 | 中国电力科学研究院有限公司武汉分院 | A kind of determination method of excellent electromechanical properties HTV insulating materials curing parameters |
| CN108129844A (en) * | 2017-11-22 | 2018-06-08 | 新宇电缆集团股份有限公司 | A kind of mine bend resistance cable outer sheath material |
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| CN101430954B (en) | 2011-08-10 |
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