CN101775215A - Silicone rubber material for ageing-resistant composite insulator and preparation method thereof - Google Patents
Silicone rubber material for ageing-resistant composite insulator and preparation method thereof Download PDFInfo
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- CN101775215A CN101775215A CN200910110891A CN200910110891A CN101775215A CN 101775215 A CN101775215 A CN 101775215A CN 200910110891 A CN200910110891 A CN 200910110891A CN 200910110891 A CN200910110891 A CN 200910110891A CN 101775215 A CN101775215 A CN 101775215A
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Abstract
The invention relates to a silicone rubber material for an ageing-resistant composite insulator and a preparation method thereof. Methyl phenyl silicone resin is added into a 110-2 methyl vinyl silicone rubber basal body, the oxidation of a pendant group is inhabited and a phenyl forms steric hindrance on a silicon oxygen chain due to the introduction of the phenyl, so that a main chain is more difficult to degrade, thereby the thermal stability of silicone rubber is further improved; a Z-6173 dispersing auxiliary agent is added into aluminium hydroxide and enters an ultrasonic jet mill, so that under the action of high-speed high-pressure airflows in different directions, a newborn surface formed from powders has reactive activity and generates chemical reaction or chemical adsorption with a dispersant, thinning and activation are simultaneously finished, the compatibility of the aluminium hydroxide and the silicone rubber is improved, the bonding force of the aluminium hydroxide and silicone rubber molecules and the dispersivity of the aluminium hydroxide in the silicone rubber are improved, the insulator is prevented from being separated out in the operating process, the occurrence of whitening and powdering phenomena on the surface of a silicone rubber shed is eliminated, and the aging resistant performance of the silicone rubber material is improved.
Description
Technical field
The present invention relates to a kind of silicone rubber material for ageing-resistant composite insulator and preparation method thereof.
Background technology
Composite insulator is by glass fibre plug, silastic material full skirt and be connected gold utensil and formed, and not only has in light weightly, and therefore physical strength advantages of higher, and have fabulous anti-pollution characteristic, is used widely in the power system.Because the silastic material full skirt is to be subjected to all the year round UV-irradiation, the beta maximum energy of this UV-light part is very near the ionic dissociation energy of silicon-carbon side switch in the silicon rubber molecule, make silicon rubber molecule side organic radical oxidized, the cyclisation degraded takes place, produce some small molecules polysiloxane.Simultaneously, contain a certain amount of terminal hydroxy group in the silicon rubber molecule, big electric current is being arranged by reaching under the high temperature, terminal hydroxy group causes the silicon rubber molecular backbone chain and separates the button DeR, also can decomposite the small molecules polysiloxane.These small molecules polysiloxane make silastic surface obtain the generation of hydrophobic nature and small molecules polysiloxane, cause the silastic material ageing resistance poor, and work-ing life is short.Moreover, heavy addition aluminium hydroxide is as anti-creepage trace agent in the composite insulator silicon rubber material, addition is more than 40%, and the consistency of aluminium hydroxide and silicon rubber is poor, in the insulator operational process, separate out easily, turning white appears in silicon rubber full skirt surface, powder phenomenon-tion, influences the ageing resistance of silastic material equally.Comprehensively above-mentioned, there is the situation that generation easily is aging and damage in existing silastic material full skirt, show the decline of material hydrophobic nature, embrittlement, sclerosis, efflorescence, cracking, play trace, dendroid passage, deteriorate, degradation under the hydrophobic nature under the low temperature, thereby influenced the work-ing life of insulator greatly, the normal operation of serious threat power system.
Summary of the invention
What the present invention will solve is that the easy generation of existing silastic material full skirt existence is worn out and damage causes insulator weak point in work-ing life, influences the problem that power system normally moves, and a kind of silicone rubber material for ageing-resistant composite insulator and preparation method thereof is provided.
Purpose of the present invention is achieved through the following technical solutions:
A kind of preparation method of silicone rubber material for ageing-resistant composite insulator may further comprise the steps:
1) the silicon rubber modification is handled: adopting the 110-2 methyl vinyl silicone rubber is matrix, the dosage of 100 parts of 110-2 methyl vinyl silicone rubbers, 6～10 parts of methyl phenyl silicone resins by weight, in the 110-2 methyl vinyl silicone rubber, add the methyl phenyl silicone resin of dosage, put into vacuum kneader in the lump, be heated to 120 ℃, fully stir, make modified silicon rubber;
2) preparation refinement activation aluminium hydroxide: the dosage of 100 parts in aluminium hydroxide, 1～3 part of Z-6173 dispersing auxiliary by weight, the Z-6173 dispersing auxiliary that in aluminium hydroxide, adds dosage, after mixing, add ultrasonic wave air-flow mill, powder is under the high speed and high pressure air-flow effect of different directions, by refinement activation back discharging, make refinement activation aluminium hydroxide;
3) preparation used in composite insulator silastic material: according to parts by weight be 100 parts of modified silicon rubbers, 20～40 parts of white carbon blacks, 4～6 parts of silicon diols, through the dosage of 120～140 parts in refinement activatory aluminium hydroxide, 5 parts in zinc oxide, 6 parts of red iron oxides, 3 parts of hydroxy silicon oils, 1 part of vulcanizing agent, the predetermined amount modified silicon rubber is put into vacuum kneader, smash sizing material; Add white carbon black, silicon diol by dosage, the back discharging that stirs is left standstill with making rubber unvulcanizate after opening rubber mixing machine thin-pass, the moulding, depositing in batches; Then, the rubber unvulcanizate of depositing after leaving standstill is put into opening rubber mixing machine, and add refinement activation aluminium hydroxide, zinc oxide, red iron oxide, hydroxy silicon oil, vulcanizing agent, mix back thin-pass, slice, make the used in composite insulator silastic material by dosage.
Another object of the present invention provides a kind of used in composite insulator silastic material that adopts method for preparing.
The present invention has the following advantages:
One, utilize methyl phenyl silicone resin that silicon rubber is carried out modification to handle, the branched molecular structure of methyl phenyl silicone resin has been destroyed the spirane structure of silicon rubber, has suppressed the rearrangement of Si-O, has hindered the ring DeR, thereby reduce the thermal degradation speed of silicon rubber, improve its thermal stability.The introducing of phenyl has suppressed the oxidation of side group, and simultaneously, phenyl forms steric hindrance on the silica chain, makes main chain than difficult degradation, thereby further improves the thermostability of silicon rubber.
Two, the present invention adopts ultrasonic wave air-flow mill that aluminium hydroxide is carried out the refinement activation treatment; In aluminium hydroxide, add 1%～3% Z-6173 dispersing auxiliary, after mixing, enter ultrasonic wave air-flow mill, powder is under the high speed and high pressure air-flow effect of different directions, produce fierce collision, shear, friction, thereby pulverize, refinement, simultaneously, collision, shear, the fresh surface that forms in the friction process has reactive behavior, with dispersion agent generation chemical reaction or chemisorption, the refinement activation is finished simultaneously, improved the consistency of aluminium hydroxide and silicon rubber, the bonding force that increases aluminium hydroxide and silicon rubber molecule with and dispersiveness in silicon rubber, prevent from the insulator operational process, to separate out, eliminating silicon rubber full skirt surface occurs turning white, powder phenomenon-tion, the ageing resistance of raising silastic material.
Embodiment
Embodiment 1: a kind of preparation method of silicone rubber material for ageing-resistant composite insulator may further comprise the steps:
1) the silicon rubber modification is handled: adopting the 110-2 methyl vinyl silicone rubber is matrix, the dosage of 100 parts of 110-2 methyl vinyl silicone rubbers, 6～10 parts of methyl phenyl silicone resins by weight, in the 110-2 methyl vinyl silicone rubber, add the methyl phenyl silicone resin of dosage, put into vacuum kneader in the lump, be heated to 120 ℃, fully stirred 1 hour, make modified silicon rubber;
2) preparation refinement activation aluminium hydroxide: the dosage of 100 parts in aluminium hydroxide, 1～3 part of Z-6173 dispersing auxiliary by weight, the Z-6173 dispersing auxiliary that in aluminium hydroxide, adds dosage, after mixing, add ultrasonic wave air-flow mill, powder is under the high speed and high pressure air-flow effect of different directions, by refinement activation back discharging, make refinement activation aluminium hydroxide;
3) preparation used in composite insulator silastic material: be 100 parts of modified silicon rubbers, 20 parts of white carbon blacks, 4 parts of silicon diols by weight, through the dosage of 120 parts in refinement activatory aluminium hydroxide, 5 parts in zinc oxide, 6 parts of red iron oxides, 3 parts of hydroxy silicon oils, 1 part of vulcanizing agent, the predetermined amount modified silicon rubber is put into vacuum kneader, smash sizing material; Add white carbon black, silicon diol by dosage, the back discharging that stirs is left standstill 24 hours with making rubber unvulcanizate after opening rubber mixing machine thin-pass, the moulding, depositing in batches; Then, the rubber unvulcanizate of depositing after leaving standstill is put into opening rubber mixing machine, and add refinement activation aluminium hydroxide, zinc oxide, red iron oxide, hydroxy silicon oil, vulcanizing agent, mix back thin-pass, slice, make the used in composite insulator silastic material by dosage.
Because the silastic material full skirt is to be subjected to all the year round UV-irradiation, the beta maximum energy of this UV-light part is very near the ionic dissociation energy of silicon-carbon side switch in the silicon rubber molecule, make silicon rubber molecule side organic radical oxidized, the cyclisation degraded takes place, produce some small molecules polysiloxane.Simultaneously, contain a certain amount of terminal hydroxy group in the silicon rubber molecule, big electric current is being arranged by reaching under the high temperature, terminal hydroxy group causes the silicon rubber molecular backbone chain and separates the button DeR, also can decomposite the small molecules polysiloxane.These small molecules polysiloxane make silastic surface obtain hydrophobic nature.Simultaneously, the generation of small molecules polysiloxane illustrates that also there is problem of aging in silastic material.For this reason, the present invention utilizes the characteristic that methyl phenyl silicone resin is similar to silastic structure, consistency is good, simultaneously, the branched molecular structure of methyl phenyl silicone resin has been destroyed the spirane structure of silicon rubber, suppressed the rearrangement of Si-O, hinder the ring DeR, thereby reduced the thermal degradation speed of silicon rubber, improved its thermal stability.The introducing of phenyl has suppressed the oxidation of side group, and simultaneously, phenyl forms steric hindrance on the silica chain, makes main chain than difficult degradation, thereby further improves the thermostability of silicon rubber.
Heavy addition aluminium hydroxide is as anti-creepage trace agent in the composite insulator silicon rubber material, and addition is more than 40%.The consistency of aluminium hydroxide and silicon rubber is poor, before interpolation, must carry out refinement and surface treatment to it, the bonding force that increases itself and silicon rubber molecule with and dispersiveness in silicon rubber, otherwise in the insulator operational process, separate out easily, turning white appears in silicon rubber full skirt surface, powder phenomenon-tion, makes silastic material aging.In order to improve the consistency of aluminium hydroxide and silicon rubber, the present invention adopts ultrasonic wave air-flow mill that aluminium hydroxide is carried out the refinement activation treatment.In aluminium hydroxide, add 1%～3%Z-6173 dispersing auxiliary, after mixing, enter ultrasonic wave air-flow mill, powder is under the high speed and high pressure air-flow effect of different directions, produce fierce collision, shear, friction, thereby pulverize, refinement, simultaneously, collision, shear, the fresh surface that forms in the friction process has reactive behavior, with dispersion agent generation chemical reaction or chemisorption, the refinement activation is finished simultaneously, improved the consistency of aluminium hydroxide and silicon rubber, the bonding force that increases aluminium hydroxide and silicon rubber molecule with and dispersiveness in silicon rubber, prevent from the insulator operational process, to separate out, eliminating silicon rubber full skirt surface occurs turning white, powder phenomenon-tion, the ageing resistance of raising silastic material.
Embodiment 2: the prescription of this enforcement preparation modified silicon rubber, refinement activation aluminium hydroxide is all identical with embodiment 1 with the technology of technology, preparation used in composite insulator silastic material, prescription in the preparation used in composite insulator silastic material is different with embodiment 1, and the parts by weight of each component are specific as follows: 100 parts of modified silicon rubbers, 40 parts of white carbon blacks, 6 parts of silicon diols, through 140 parts in refinement activatory aluminium hydroxide, 5 parts in zinc oxide, 6 parts of red iron oxides, 3 parts of hydroxy silicon oils, 1 part of vulcanizing agent.
Embodiment 3: the prescription of this enforcement preparation modified silicon rubber, refinement activation aluminium hydroxide is all identical with embodiment 1 with the technology of technology, preparation used in composite insulator silastic material, prescription in the preparation used in composite insulator silastic material is different with embodiment 1, and the parts by weight of each component are specific as follows: 100 parts of modified silicon rubbers, 30 parts of white carbon blacks, 5 parts of silicon diols, through 130 parts in refinement activatory aluminium hydroxide, 5 parts in zinc oxide, 6 parts of red iron oxides, 3 parts of hydroxy silicon oils, 1 part of vulcanizing agent.
The above, only for preferred embodiment of the present invention, so can not limit scope of the invention process with this, i.e. the equivalence of doing according to the present patent application claim and description changes and modification, all should still belong in the scope that patent of the present invention contains.
Claims (7)
1. the preparation method of a silicone rubber material for ageing-resistant composite insulator may further comprise the steps:
1) the silicon rubber modification is handled: adopting the 110-2 methyl vinyl silicone rubber is matrix, the dosage of 100 parts of 110-2 methyl vinyl silicone rubbers, 6～10 parts of methyl phenyl silicone resins by weight, in the 110-2 methyl vinyl silicone rubber, add the methyl phenyl silicone resin of dosage, put into vacuum kneader in the lump, be heated to 120 ℃, fully stir, make modified silicon rubber;
2) preparation refinement activation aluminium hydroxide: the dosage of 100 parts in aluminium hydroxide, 1～3 part of Z-6173 dispersing auxiliary by weight, the Z-6173 dispersing auxiliary that in aluminium hydroxide, adds dosage, after mixing, add ultrasonic wave air-flow mill, powder is under the high speed and high pressure air-flow effect of different directions, by refinement activation back discharging, make refinement activation aluminium hydroxide;
3) preparation used in composite insulator silastic material: according to parts by weight be 100 parts of modified silicon rubbers, 20～40 parts of white carbon blacks, 4～6 parts of silicon diols, through the dosage of 120～140 parts in refinement activatory aluminium hydroxide, 5 parts in zinc oxide, 6 parts of red iron oxides, 3 parts of hydroxy silicon oils, 1 part of vulcanizing agent, the predetermined amount modified silicon rubber is put into vacuum kneader, smash sizing material; Add white carbon black, silicon diol by dosage, the back discharging that stirs is left standstill with making rubber unvulcanizate after opening rubber mixing machine thin-pass, the moulding, depositing in batches; Then, the rubber unvulcanizate of depositing after leaving standstill is put into opening rubber mixing machine, and add refinement activation aluminium hydroxide, zinc oxide, red iron oxide, hydroxy silicon oil, vulcanizing agent, mix back thin-pass, slice, make the used in composite insulator silastic material by dosage.
2. preparation method according to claim 1 is characterized in that: each the composition weight umber in the described preparation used in composite insulator silastic material step is 100 parts of modified silicon rubbers, 20 parts of white carbon blacks, 4 parts of silicon diols, through 120 parts in refinement activatory aluminium hydroxide, 5 parts in zinc oxide, 6 parts of red iron oxides, 3 parts of hydroxy silicon oils, 1 part of vulcanizing agent.
3. preparation method according to claim 1 is characterized in that: each the composition weight umber in the described preparation used in composite insulator silastic material step is 100 parts of modified silicon rubbers, 40 parts of white carbon blacks, 6 parts of silicon diols, through 140 parts in refinement activatory aluminium hydroxide, 5 parts in zinc oxide, 6 parts of red iron oxides, 3 parts of hydroxy silicon oils, 1 part of vulcanizing agent.
4. preparation method according to claim 1 is characterized in that: each the composition weight umber in the described preparation used in composite insulator silastic material step is 100 parts of modified silicon rubbers, 30 parts of white carbon blacks, 5 parts of silicon diols, through 130 parts in refinement activatory aluminium hydroxide, 5 parts in zinc oxide, 6 parts of red iron oxides, 3 parts of hydroxy silicon oils, 1 part of vulcanizing agent.
5. preparation method according to claim 1 is characterized in that: the molecular weight 600,000 of described 110-2 methyl vinyl silicone rubber, contents of ethylene 0.2%.
6. preparation method according to claim 1 is characterized in that: the time of repose of depositing of rubber unvulcanizate is 24 hours in the described preparation used in composite insulator silastic material step.
7. one kind according to the prepared used in composite insulator silastic material of the arbitrary preparation method of claim 1 to 6.
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| CN2009101108915A CN101775215B (en) | 2009-01-13 | 2009-01-13 | Silicone rubber material for ageing-resistant composite insulator and preparation method thereof |
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| CN2009101108915A CN101775215B (en) | 2009-01-13 | 2009-01-13 | Silicone rubber material for ageing-resistant composite insulator and preparation method thereof |
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| CN101775215A true CN101775215A (en) | 2010-07-14 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127301A (en) * | 2011-01-24 | 2011-07-20 | 广州市迈克林电力有限公司 | Light ageing resistant blend for composite insulator and preparation method thereof |
| CN102888121A (en) * | 2012-10-16 | 2013-01-23 | 江苏天辰硅材料有限公司 | High-resilience silicon rubber and preparation method thereof |
| CN105810368A (en) * | 2016-04-07 | 2016-07-27 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | +/-800kV DC rod shaped suspension composite insulator |
| CN106189255A (en) * | 2016-07-22 | 2016-12-07 | 江阴市驰誉电力科技有限公司 | Electrically insulating silicone rubber and jumper clamp insulation protective hood prepared therefrom |
| CN107641322A (en) * | 2017-09-24 | 2018-01-30 | 江山海维科技有限公司 | A kind of manufacture method of insulator fluorosioloxane rubber material |
| CN107880555A (en) * | 2017-11-30 | 2018-04-06 | 江山海维科技有限公司 | A kind of manufacture method of insulator new material |
| CN108912693A (en) * | 2018-09-06 | 2018-11-30 | 宁波橡树汽车零部件有限公司 | A kind of silicone rubber formulations of long-life |
| CN109336117A (en) * | 2018-11-09 | 2019-02-15 | 重庆大学 | A method of extracting gas-phase silica from waste and old composite insulator umbrella skirt |
| CN110204906A (en) * | 2019-06-25 | 2019-09-06 | 汤姆森电气有限公司 | A kind of compound anti-bird umbrella cover of macromolecule and preparation method thereof |
| CN110218457A (en) * | 2019-06-25 | 2019-09-10 | 汤姆森电气有限公司 | A kind of anti-bird umbrella cover of fitting formula and preparation method thereof |
| CN111334047A (en) * | 2018-12-19 | 2020-06-26 | 中蓝晨光化工研究设计院有限公司 | Direct-current leakage tracking resistant electric insulation silicone rubber and preparation method thereof |
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2009
- 2009-01-13 CN CN2009101108915A patent/CN101775215B/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127301A (en) * | 2011-01-24 | 2011-07-20 | 广州市迈克林电力有限公司 | Light ageing resistant blend for composite insulator and preparation method thereof |
| CN102127301B (en) * | 2011-01-24 | 2012-09-19 | 广州市迈克林电力有限公司 | Light ageing resistant blend for composite insulator and preparation method thereof |
| CN102888121A (en) * | 2012-10-16 | 2013-01-23 | 江苏天辰硅材料有限公司 | High-resilience silicon rubber and preparation method thereof |
| CN105810368A (en) * | 2016-04-07 | 2016-07-27 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | +/-800kV DC rod shaped suspension composite insulator |
| CN106189255A (en) * | 2016-07-22 | 2016-12-07 | 江阴市驰誉电力科技有限公司 | Electrically insulating silicone rubber and jumper clamp insulation protective hood prepared therefrom |
| CN107641322A (en) * | 2017-09-24 | 2018-01-30 | 江山海维科技有限公司 | A kind of manufacture method of insulator fluorosioloxane rubber material |
| CN107880555A (en) * | 2017-11-30 | 2018-04-06 | 江山海维科技有限公司 | A kind of manufacture method of insulator new material |
| CN108912693A (en) * | 2018-09-06 | 2018-11-30 | 宁波橡树汽车零部件有限公司 | A kind of silicone rubber formulations of long-life |
| CN109336117A (en) * | 2018-11-09 | 2019-02-15 | 重庆大学 | A method of extracting gas-phase silica from waste and old composite insulator umbrella skirt |
| CN109336117B (en) * | 2018-11-09 | 2022-02-18 | 重庆大学 | Method for extracting fumed silica from waste composite insulator umbrella skirt |
| CN111334047A (en) * | 2018-12-19 | 2020-06-26 | 中蓝晨光化工研究设计院有限公司 | Direct-current leakage tracking resistant electric insulation silicone rubber and preparation method thereof |
| CN110204906A (en) * | 2019-06-25 | 2019-09-06 | 汤姆森电气有限公司 | A kind of compound anti-bird umbrella cover of macromolecule and preparation method thereof |
| CN110218457A (en) * | 2019-06-25 | 2019-09-10 | 汤姆森电气有限公司 | A kind of anti-bird umbrella cover of fitting formula and preparation method thereof |
| CN110204906B (en) * | 2019-06-25 | 2021-09-10 | 汤姆森电气有限公司 | Polymer composite bird-proof umbrella cover and preparation method thereof |
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| CN101775215B (en) | 2012-06-13 |
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Address after: 362000 Qixing Industrial Park, Jiangnan high tech electronic Park, Quanzhou, Fujian Patentee after: SEVENSTARS ELECTRIC CO.,LTD. Patentee after: Huang Qichang Address before: 362000 Qixing Industrial Park, Jiangnan high tech electronic Park, Quanzhou, Fujian Patentee before: QUANZHOU SEVENSTARS ELECTRIC Co.,Ltd. Patentee before: Huang Qichang |
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