CN106590834B - A kind of preparation method of high thermal conductivity transformer oil - Google Patents
A kind of preparation method of high thermal conductivity transformer oil Download PDFInfo
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- CN106590834B CN106590834B CN201611087586.5A CN201611087586A CN106590834B CN 106590834 B CN106590834 B CN 106590834B CN 201611087586 A CN201611087586 A CN 201611087586A CN 106590834 B CN106590834 B CN 106590834B
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- transformer oil
- thermal conductivity
- high thermal
- silicone surfactant
- nano silica
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
- C10M141/12—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic compound containing atoms of elements not provided for in groups C10M141/02 - C10M141/10
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/10—Compounds containing silicon
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/14—Inorganic compounds or elements as ingredients in lubricant compositions inorganic compounds surface treated with organic compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
- C10M2227/02—Esters of silicic acids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
- C10M2227/04—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions having a silicon-to-carbon bond, e.g. organo-silanes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/14—Electric or magnetic purposes
- C10N2040/16—Dielectric; Insulating oil or insulators
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Silicon Compounds (AREA)
Abstract
The invention discloses a kind of preparation methods of high thermal conductivity transformer oil, the following steps are included: first using ethyl orthosilicate, dehydrated alcohol, deionized water and ammonium hydroxide as raw material, nano silica is made using sol-gal process, and surface cladding is carried out to nano silica using carboxyl silicone surfactant, nano silica and the transformer oil mixing that finally carboxyl silicone surfactant is coated, under the power of 1000W, ultrasonic disperse 1-8h obtains high thermal conductivity transformer oil.High thermal conductivity transformer oil produced by the present invention can be stored with long-time stability, excellent thermal conductivity.
Description
Technical field:
The present invention relates to the modified fields of transformer oil, are specifically related to a kind of preparation method of high thermal conductivity transformer oil.
Background technique:
In recent years, with the high speed development of social economy, people are to power grid upgrading and high-speed rail construction etc.
Demand is increasingly enhanced.At the same time, it is also increasingly valued by people as the power transformer of electrical power trans mission/distribution system tie.Root
It reports and shows according to national grid operating analysis, the China 2005-2010 Nian Jian is because of grid power blackout thing caused by power transmission and transforming equipment failure
Therefore the 37-48% of current year total accident is accounted for, occupy failure cause first.Recent years constantly mentions with the voltage class of electric system
Height, more stringent requirements are proposed for stable operation of the people to transformer, therefore it is required that dielectric has preferably insulation and heat dissipation
Performance.
Most in current existing transformer to use paper oil insulation mode, wherein transformer oil plays heat dissipation and insulation simultaneously
Effect.Now with the raising of transformation grade, the loss that iron core, winding and part metals structure when transformer station high-voltage side bus generate is equal
Increase, these losses are changed into heat transfer into surrounding medium.This also means that proposing higher want to transformer heat dissipation
It asks, it is therefore necessary to the research in terms of carrying out augmentation of heat transfer to existing transformer.If but not changing transformer oil thermal conductivity
In the case of, it can only be realized by increasing its heat-dissipating space, this is obviously unfavorable for transformer and develops toward the direction of miniaturization.
In order to solve the problems, such as that the optimizing thermal solution of transformer oil, nineteen ninety-five U.S.'s Argonne National Laboratory Choi etc. are put forward for the first time
The concept of nano-fluid, by the way that nano metal or nonmetal oxide even particulate dispersion are formed stabilization into transformer oil
Nanoparticle suspension.This new function fluid increases compared to pure transformer oil thermal conductivity, heat-sinking capability
It correspondinglys increase.Nanometer silicon dioxide particle is cheap, thermal coefficient 27W/mK, and the thermal coefficient of transformer oil is
Nano silica is distributed to inside transformer oil, can effectively improve the heating conduction of transformer oil by 0.1W/mK, and
The raising of modified transformer oil heating conduction is crucial to be dispersion stabilization of the nano silica in transformer oil.
Currently used method be using fatty acid or by fatty-acylation amino acid or sodium salt as activating agent packet
Cover nanometer silicon dioxide particle, then in redisperse to transformer oil, but nano-fluid stability made from this method by
Limit；Another method is using oleic acid, OP-4, OP-7 as surfactant, but nano-fluid obtained still cannot achieve
Long-time stability.
Summary of the invention:
The object of the present invention is to provide a kind of preparation method of high thermal conductivity transformer oil, this method preparation is simple, obtained
Transformer oil thermal conductivity is good, and stability is excellent.
To achieve the above object, the invention adopts the following technical scheme:
A kind of preparation method of high thermal conductivity transformer oil, comprising the following steps:
(1) ethyl orthosilicate, dehydrated alcohol are mixed evenly, are then gone with the speed dropwise addition of 0.5-1.5ml/min
Ammonium hydroxide is added after being added dropwise in ionized water, is uniformly mixed, and reaction 1-3h is stirred at room temperature, carboxylic is then added into mixed liquor
Radical siloxane surfactant, then stirs 5-10h；Centrifugal treating, using dehydrated alcohol washing precipitating, last 60- when centrifugation
8-10h is dried at 70 DEG C, obtains the nano silica of carboxyl silicone surfactant cladding；
(2) nano silica of the cladding of carboxyl silicone surfactant made from step (1) and transformer oil is mixed
It closes, under the power of 1000W, ultrasonic disperse 1-8h obtains high thermal conductivity transformer oil.
As a preferred embodiment of the above technical solution, in step (1), the ethyl orthosilicate, dehydrated alcohol, deionized water, ammonia
The volume ratio of water is (1-5): 40:(1-2): (1-3).
As a preferred embodiment of the above technical solution, in step (1), the additive amount of the carboxyl silicone surfactant will be protected
The mass ratio of the particle and carboxyl silicone surfactant of demonstrate,proving nano silica is (4-11): 1.
As a preferred embodiment of the above technical solution, in step (1), the structure of the carboxyl silicone surfactant are as follows:
As a preferred embodiment of the above technical solution, in step (2), in the high thermal conductivity transformer oil, nano silica
Volume fraction is 0.1-1%.
As a preferred embodiment of the above technical solution, in step (1), the rate of addition of the deionized water is 0.95ml/min.
The invention has the following advantages:
The present invention is modified transformer oil using homemade nano silica, using carboxyl silicone surfactant
Agent carries out surface cladding to nano silica, so that nano silica long-time stability in transformer oil is dispersed；
The mass ratio and nanometer that the present invention passes through rationally control carboxyl silicone surfactant and nano silica
The mass ratio of silica and transformer oil, so that obtaining the transformer oil of high thermal conductivity under conditions of low cost；Transformation is made
Device oil thermal coefficient of nano modification transformer oil when the volume fraction that nano silica is added is 1% is up to 0.35W/
m·K。
Specific embodiment:
In order to better understand the present invention, below by embodiment, the present invention is further described, and embodiment is served only for solving
The present invention is released, any restriction will not be constituted to the present invention.
Embodiment 1
A kind of preparation method of high thermal conductivity transformer oil, comprising the following steps:
(1) 1ml ethyl orthosilicate, 40ml dehydrated alcohol are mixed evenly, are then added dropwise with the speed of 0.5ml/min
1ml ammonium hydroxide is added in 1ml deionized water after being added dropwise, be uniformly mixed, and reaction 1h is stirred at room temperature, then into mixed liquor
Carboxyl silicone surfactant is added, then stirs 5h；Centrifugal treating, using dehydrated alcohol washing precipitating when centrifugation, finally
8h is dried at 60-70 DEG C, obtains the nano silica of carboxyl silicone surfactant cladding；Wherein, the carboxyl silicon oxygen
The additive amount of alkane surfactant will guarantee that the mass ratio of the particle and carboxyl silicone surfactant of nano silica is
4:1；
(2) nano silica of the cladding of carboxyl silicone surfactant made from step (1) and transformer oil is mixed
It closes, under the power of 1000W, ultrasonic disperse 1h obtains high thermal conductivity transformer oil；Wherein, in high thermal conductivity transformer oil, nanometer two
The volume fraction of silica is 0.1%.
Embodiment 2
A kind of preparation method of high thermal conductivity transformer oil, comprising the following steps:
(1) 5ml ethyl orthosilicate, 40ml dehydrated alcohol are mixed evenly, are then added dropwise with the speed of 1.5ml/min
3ml ammonium hydroxide is added in 2ml deionized water after being added dropwise, be uniformly mixed, and reaction 3h is stirred at room temperature, then into mixed liquor
Carboxyl silicone surfactant is added, then stirs 10h；Centrifugal treating, using dehydrated alcohol washing precipitating when centrifugation, finally
10h is dried at 60-70 DEG C, obtains the nano silica of carboxyl silicone surfactant cladding；Wherein, the carboxyl silicon oxygen
The additive amount of alkane surfactant will guarantee that the mass ratio of the particle and carboxyl silicone surfactant of nano silica is
11:1；
(2) nano silica of the cladding of carboxyl silicone surfactant made from step (1) and transformer oil is mixed
It closes, under the power of 1000W, ultrasonic disperse 8h obtains high thermal conductivity transformer oil；Wherein, in high thermal conductivity transformer oil, nanometer two
The volume fraction of silica is 1%.
Embodiment 3
A kind of preparation method of high thermal conductivity transformer oil, comprising the following steps:
(1) 2ml ethyl orthosilicate, 40ml dehydrated alcohol are mixed evenly, are then added dropwise with the speed of 0.7ml/min
1.5ml ammonium hydroxide is added in 1.2ml deionized water after being added dropwise, be uniformly mixed, and reaction 1.5h is stirred at room temperature, then to mixed
It closes and carboxyl silicone surfactant is added in liquid, then stir 6h；Centrifugal treating, it is heavy using dehydrated alcohol washing when centrifugation
It forms sediment, dries 8.5h at last 60-70 DEG C, obtain the nano silica of carboxyl silicone surfactant cladding；Wherein, described
The additive amount of carboxyl silicone surfactant will guarantee the particle and carboxyl silicone surfactant of nano silica
Mass ratio is 7:1；
(2) nano silica of the cladding of carboxyl silicone surfactant made from step (1) and transformer oil is mixed
It closes, under the power of 1000W, ultrasonic disperse 2h obtains high thermal conductivity transformer oil；Wherein, in high thermal conductivity transformer oil, nanometer two
The volume fraction of silica is 2.5%.
Embodiment 4
A kind of preparation method of high thermal conductivity transformer oil, comprising the following steps:
(1) 3ml ethyl orthosilicate, 40ml dehydrated alcohol are mixed evenly, are then added dropwise with the speed of 0.7ml/min
2ml ammonium hydroxide is added in 1.4ml deionized water after being added dropwise, be uniformly mixed, and reaction 2h is stirred at room temperature, then to mixed liquor
Middle addition carboxyl silicone surfactant, then stirs 7h；Centrifugal treating, using dehydrated alcohol washing precipitating when centrifugation, most
9h is dried at 60-70 DEG C afterwards, obtains the nano silica of carboxyl silicone surfactant cladding；Wherein, the carboxyl silicon
The additive amount of oxygen alkane surfactant will guarantee the particle of nano silica and the mass ratio of carboxyl silicone surfactant
For 8:1；
(2) nano silica of the cladding of carboxyl silicone surfactant made from step (1) and transformer oil is mixed
It closes, under the power of 1000W, ultrasonic disperse 5h obtains high thermal conductivity transformer oil；Wherein, in high thermal conductivity transformer oil, nanometer two
The volume fraction of silica is 3.5%.
Embodiment 5
A kind of preparation method of high thermal conductivity transformer oil, comprising the following steps:
(1) 3.5ml ethyl orthosilicate, 40ml dehydrated alcohol are mixed evenly, are then dripped with the speed of 0.9ml/min
Add 1.4ml deionized water, after being added dropwise be added 1.5ml ammonium hydroxide, be uniformly mixed, be stirred at room temperature reaction 1.5h, then to
Carboxyl silicone surfactant is added in mixed liquor, then stirs 8h；Centrifugal treating, it is heavy using dehydrated alcohol washing when centrifugation
It forms sediment, dries 8.5h at last 60-70 DEG C, obtain the nano silica of carboxyl silicone surfactant cladding；Wherein, described
The additive amount of carboxyl silicone surfactant will guarantee the particle and carboxyl silicone surfactant of nano silica
Mass ratio is 9:1；
(2) nano silica of the cladding of carboxyl silicone surfactant made from step (1) and transformer oil is mixed
It closes, under the power of 1000W, ultrasonic disperse 6h obtains high thermal conductivity transformer oil；Wherein, in high thermal conductivity transformer oil, nanometer two
The volume fraction of silica is 4.5%.
Embodiment 6
A kind of preparation method of high thermal conductivity transformer oil, comprising the following steps:
(1) 4ml ethyl orthosilicate, 40ml dehydrated alcohol are mixed evenly, are then added dropwise with the speed of 1.1ml/min
2ml ammonium hydroxide is added in 1.6ml deionized water after being added dropwise, be uniformly mixed, and reaction 2h is stirred at room temperature, then to mixed liquor
Middle addition carboxyl silicone surfactant, then stirs 9h；Centrifugal treating, using dehydrated alcohol washing precipitating when centrifugation, most
9h is dried at 60-70 DEG C afterwards, obtains the nano silica of carboxyl silicone surfactant cladding；Wherein, the carboxyl silicon
The additive amount of oxygen alkane surfactant will guarantee the particle of nano silica and the mass ratio of carboxyl silicone surfactant
For 10:1；
(2) nano silica of the cladding of carboxyl silicone surfactant made from step (1) and transformer oil is mixed
It closes, under the power of 1000W, ultrasonic disperse 7h obtains high thermal conductivity transformer oil；Wherein, in high thermal conductivity transformer oil, nanometer two
The volume fraction of silica is 5.5%.
Embodiment 7
A kind of preparation method of high thermal conductivity transformer oil, comprising the following steps:
(1) 4.5ml ethyl orthosilicate, 40ml dehydrated alcohol are mixed evenly, are then dripped with the speed of 1.3ml/min
Add 1.8ml deionized water, after being added dropwise be added 2.5ml ammonium hydroxide, be uniformly mixed, be stirred at room temperature reaction 2.5h, then to
Carboxyl silicone surfactant is added in mixed liquor, then stirs 9h；Centrifugal treating, it is heavy using dehydrated alcohol washing when centrifugation
It forms sediment, dries 9.5h at last 60-70 DEG C, obtain the nano silica of carboxyl silicone surfactant cladding；Wherein, described
The additive amount of carboxyl silicone surfactant will guarantee the particle and carboxyl silicone surfactant of nano silica
Mass ratio is 10:1；
(2) nano silica of the cladding of carboxyl silicone surfactant made from step (1) and transformer oil is mixed
It closes, under the power of 1000W, ultrasonic disperse 9.5h obtains high thermal conductivity transformer oil；Wherein, in high thermal conductivity transformer oil, nanometer
The volume fraction of silica is 7.5%.
The thermal coefficient of the high thermal conductivity transformer oil of above-mentioned preparation is tested using transient hot wire technique, test result is as follows:
Table 1
As it can be seen from table 1 transformer oil excellent thermal conductivity produced by the present invention, nano silica is in transformer oil
In favorable dispersibility, for a long time place heating conduction be basically unchanged.
Claims (6)
1. a kind of preparation method of high thermal conductivity transformer oil, which comprises the following steps:
(1) ethyl orthosilicate, dehydrated alcohol are mixed evenly, deionization is then added dropwise with the speed of 0.5-1.5ml/min
Ammonium hydroxide is added after being added dropwise in water, is uniformly mixed, and reaction 1-3h is stirred at room temperature, carboxyl silicon is then added into mixed liquor
Oxygen alkane surfactant, then stirs 5-10h；Centrifugal treating, using dehydrated alcohol washing precipitating when centrifugation, last 60-70 DEG C
Lower drying 8-10h obtains the nano silica of carboxyl silicone surfactant cladding；
(2) nano silica of the cladding of carboxyl silicone surfactant made from step (1) and transformer oil are mixed,
Under the power of 1000W, ultrasonic disperse 1-8h obtains high thermal conductivity transformer oil.
2. a kind of preparation method of high thermal conductivity transformer oil as described in claim 1, it is characterised in that: described in step (1)
Ethyl orthosilicate, dehydrated alcohol, deionized water, the volume ratio of ammonium hydroxide are (1-5): 40:(1-2): (1-3).
3. a kind of preparation method of high thermal conductivity transformer oil as described in claim 1, it is characterised in that: described in step (1)
The additive amount of carboxyl silicone surfactant will guarantee the particle and carboxyl silicone surfactant of nano silica
Mass ratio is (4-11): 1.
4. a kind of preparation method of high thermal conductivity transformer oil as described in claim 1, which is characterized in that described in step (1)
The structure of carboxyl silicone surfactant are as follows:
5. a kind of preparation method of high thermal conductivity transformer oil as described in claim 1, it is characterised in that: described in step (2)
In high thermal conductivity transformer oil, the volume fraction of nano silica is 0.1-1%.
6. a kind of preparation method of high thermal conductivity transformer oil as described in claim 1, it is characterised in that: described in step (1)
The rate of addition of deionized water is 0.95ml/min.
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| CN201611087586.5A CN106590834B (en) | 2016-12-01 | 2016-12-01 | A kind of preparation method of high thermal conductivity transformer oil |
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| CN201611087586.5A CN106590834B (en) | 2016-12-01 | 2016-12-01 | A kind of preparation method of high thermal conductivity transformer oil |
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| CN106590834B true CN106590834B (en) | 2019-07-12 |
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Effective date of registration: 20190611 Address after: 071000 South Second Ring 2346-368, Baoding City, Hebei Province Applicant after: Baoding Huayuan Transformer Oil Manufacturing Co.,Ltd. Address before: 523000, 2, building 11, innovation and Technology Park, Songshan Lake high tech Industrial Development Zone, Dongguan, Guangdong Applicant before: DONGGUAN JIAQIAN NEW MATERIAL TECHNOLOGY Co.,Ltd. |
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