CN107680712A - A kind of natural esters insulating oil compound antioxidant and its application - Google Patents
A kind of natural esters insulating oil compound antioxidant and its application Download PDFInfo
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- CN107680712A CN107680712A CN201710890859.8A CN201710890859A CN107680712A CN 107680712 A CN107680712 A CN 107680712A CN 201710890859 A CN201710890859 A CN 201710890859A CN 107680712 A CN107680712 A CN 107680712A
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- insulating oil
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/20—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances liquids, e.g. oils
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Abstract
The invention discloses a kind of natural esters insulating oil compound antioxidant, at least one of glyceride and following component are included：Tert-butylhydroquinone, BHT and propylgallate, wherein, the percentage that each composition quality accounts for gross mass meets following relation：Tert-butylhydroquinone of the quality below 10%；BHT of the quality below 3%；Propylgallate of the quality below 3%；The glyceride of quality more than 80%.Natural esters insulating oil compound antioxidant provided by the present invention, cooperated from a variety of anti-oxidant and synergistic component, so as to improve the oxidation resistance of natural esters insulating oil；And it is good with natural esters insulating oil intermiscibility, it is uniformly dispersed after mutually melting, does not influence the insulating properties of natural esters insulating oil.
Description
Technical field
The invention belongs to insulating oil additive agent field, is compounded more particularly, to a kind of natural esters insulating oil anti-oxidant
Agent and its application.
Background technology
Insulating oil is as a kind of important liquid insulating material, the blood being compared in generating, power supply unit, for each
In the power equipments such as kind reactor, transformer, oil-filled transformer, the safe operation to power system has a direct impact.It is new exhausted
After edge oil puts into operation, dissolved oxygen and therewith chemical combination are absorbed with air contact, in the catalysis of temperature, electric field and hardware
Under effect, oxidizing process is accelerated, causes the performance degradation of insulating oil, equipment fault can be caused.Conventional mineral oils insulating oil
In order to delay oil product to deteriorate, it is T501 to commonly use antioxidant.It is currently based on environmental protection and the enhancing of awareness of safety, natural esters insulation
Oil turns into the green substitute of mineral insulating oil, but natural esters chemical composition and mineral oil differ greatly, and mineral oil is conventional
Antioxidant species and adding proportion and mode to natural esters and do not apply to.Simultaneously because the presence of natural esters chemical constitution is big
Unsaturated bond is measured, oxidation stability is poor compared with mineral oil, therefore seems particularly heavy for the antioxidant research of natural esters insulating oil
Will.The antioxidant used at present is mostly Single chemistry medicine composition, and antioxidant effect is poor, anti oxidation time is short.Reach reason
The antioxidant effect thought will increase the addition of antioxidant, can cause the increase of cost, and may influence insulating oil
Performance, how to improve the dissolution characteristics of antioxidant and insulating oil is also a great problem.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of natural esters insulating oil compound antioxidant and its
Using it is good with natural esters insulating oil intermiscibility, and addition is convenient and antioxidant effect is good.
To achieve the above object, according to one aspect of the present invention, there is provided a kind of natural esters insulating oil compounding antioxygen
Agent, include at least one of glyceride and following component：Tert-butylhydroquinone, BHT and nutgall
Propyl propionate, wherein, the percentage that each composition quality accounts for gross mass meets following relation：
Tert-butylhydroquinone of the quality below 10%；
BHT of the quality below 3%；
Propylgallate of the quality below 3%；
The glyceride of quality more than 80%.
In one embodiment of the present of invention, following component is also included in the natural esters insulating oil compound antioxidant
In one or more：Vitamin C, vitamin E and citric acid, wherein, the percentage that each composition quality accounts for gross mass meets
Following relation：
Vitamin C of the quality below 1%；
Vitamin E of the quality below 1%；
Citric acid of the quality below 1.5%.
In one embodiment of the present of invention, also include quality in the natural esters insulating oil compound antioxidant
Less than 0.5% colouring agent.
In one embodiment of the present of invention, in the natural esters insulating oil compound antioxidant, contain in the glyceride
There is C of the quality below 20%8~C14Fatty glyceride, the C containing quality more than 80%16~C22Fatty glyceride.
In one embodiment of the present of invention, in the natural esters insulating oil compound antioxidant, the C8~C14Fat
Acid glyceride refers mainly to octanoic acid, one or more mixing of certain herbaceous plants with big flowers acid, lauric acid/dodecanoic acid, tetradecylic acid glyceride.
In one embodiment of the present of invention, in the natural esters insulating oil compound antioxidant, the C16~C22's
Fatty glyceride refers mainly to one or more mixing of palmitic acid, stearic acid, oleic acid, linoleic acid, leukotrienes, erucic acid.
It is another aspect of this invention to provide that additionally provide a kind of above-mentioned natural esters insulating oil by the use of compound antioxidant as
The application of the antioxidant of natural esters insulating oil.
In general, by the contemplated above technical scheme of the present invention compared with prior art, have following beneficial to effect
Fruit：
(1) natural esters insulating oil compound antioxidant provided by the present invention, from a variety of anti-oxidant and synergistic component
Cooperate, so as to improve the oxidation resistance of natural esters insulating oil.
(2) natural esters insulating oil compound antioxidant provided by the present invention, it is good with natural esters insulating oil intermiscibility,
It is uniformly dispersed after mutually melting, does not influence the insulating properties of natural esters insulating oil.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to this hair
It is bright to be further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below that
Conflict can is not formed between this to be mutually combined.
The invention provides a kind of natural esters insulating oil compound antioxidant, its neccessary composition is glyceride, in addition its
Neccessary composition is also comprising at least one of following component：Tert-butylhydroquinone, BHT and gallic acid third
Ester.
Wherein, each composition quality accounts for the percentage of gross mass and meets following relation：
Tert-butylhydroquinone of the quality below 10%；
BHT of the quality below 3%；
Propylgallate of the quality below 3%；
The glyceride of quality more than 80%.
Due to tert-butylhydroquinone, BHT and propylgallate at least containing it is a kind of and more than, institute
100% is not up to the mass ratio of glyceride.
Further, in order to lift the performance of the natural esters insulating oil compound antioxidant, the natural esters insulate
The one or more in following component can also be included in oil compound antioxidant：Vitamin C, vitamin E and citric acid,
Wherein, each composition quality accounts for the percentage of gross mass and meets following relation：
Vitamin C of the quality below 1%；
Vitamin E of the quality below 1%；
Citric acid of the quality below 1.5%.
Further, in order to lift the aesthetics of the natural esters insulating oil compound antioxidant, the natural esters are exhausted
Colouring agent of the quality below 0.5% can also be included in edge oil compound antioxidant, to improve its color.
It is further preferred that the C in the glyceride containing quality below 20%8~C14Fatty glyceride, contain matter
The C of amount more than 80%16~C22Fatty glyceride.
It should be noted that in the mass ratio of above-mentioned glyceride, the C8~C14The mass ratio of fatty glyceride
Example can be 0, the C16~C22The mass ratio of fatty glyceride can be 100.
It is further preferred that the C8~C14Fatty glyceride refers mainly to octanoic acid, certain herbaceous plants with big flowers acid, lauric acid/dodecanoic acid, tetradecylic acid glycerine
One or more mixing of ester.
It is further preferred that the C16~C22Fatty glyceride refer mainly to palmitic acid, stearic acid, oleic acid, sub- oil
One or more mixing of acid, leukotrienes, erucic acid.
Further, natural esters insulating oil compound antioxidant as claimed in claim 4,
Further, insulated present invention also offers the natural esters insulating oil by the use of compound antioxidant as natural esters
The application of the antioxidant of oil.
When in use, the natural esters insulating oil compound antioxidant is uniformly melted into natural esters insulating oil, i.e.,
It can be achieved to do oxidation.
The preparation method of brief description natural esters insulating oil compound antioxidant of the present invention, it is specially：
(1) glyceride is mixed in proportion, is heated up to 40~60 DEG C.
(2) other components are added in glyceride in proportion, stirred 20~30 minutes, form compound antioxidant.
Natural esters insulating oil provided by the invention realizes its anti-oxidant work(with compound antioxidant by the following mechanism of action
Energy：
(1) complementation be present between antioxidant, can provide and maintain reducing agent water by modes such as electronics transfers
It is flat；
(2) the current potential drop between antioxidant can be reduced, makes reaction be easy to carry out, it is anti-oxidant to give full play to each
The anti-oxidation function of agent.
(3) a part of antioxidant in component directly can react with oxygen, the concentration of oxygen be reduced, so as to reduce other
Antioxidant and the peroxylradicals of oxygen reaction generation.
Hereinafter, natural esters insulating oil compound antioxidant provided by the invention is illustrated with reference to several specific embodiments.
Embodiment 1：
Product formula：
Only include C in the embodiment16~C22Fatty glyceride.
And tert-butylhydroquinone, BHT and citric acid.
Embodiment 2：
Product formula：
Include C in the embodiment8~C14Fatty glyceride and C16~C22Fatty glyceride.
And tert-butylhydroquinone, propylgallate and citric acid.
Embodiment 3：
Product formula：
Include C in the embodiment8~C14Fatty glyceride and C16~C22Fatty glyceride.And tertiary butyl
Hydroquinones, propylgallate, citric acid and vitamin C.
Embodiment 4：
Product formula：
Include C in the embodiment8~C14Fatty glyceride and C16~C22Fatty glyceride.And tertiary butyl
Hydroquinones.
Embodiment 5：
Product formula：
Include C in the embodiment8~C14Fatty glyceride and C16~C22Fatty glyceride.And tertiary butyl
Hydroquinones and colouring agent.
Embodiment 6：
Product formula：
Include C in the embodiment8~C14Fatty glyceride and C16~C22Fatty glyceride.
And tert-butylhydroquinone, BHT and propylgallate, and vitamin C, vitamin E,
Citric acid and colouring agent.
It is normal to natural esters insulating oil compound antioxidant provided by the invention and insulating oil finally by specific embodiment
Performance comparision is carried out with antioxidant T501, specifically：
Performance comparison：
The insulating oil often compound antioxidant described in antioxidant T501 and embodiment 1 is chosen, is added to a batch of
In natural esters, using wide-mouth bottle, it is put in constant temperature ageing oven, steady temperature is 100 DEG C, ageing time 35 days, to different phase
Dielectric loss, breakdown voltage, micro- water and acid number tested, contrast physics and chemistry of the different antioxidants to natural esters insulating oil
The influence of performance, so as to its antioxygenic property of Integrated comparative.
A:T501+ natural esters
B：Compound antioxidant (embodiment 1)+natural esters of the present invention
Not plus oxidation resistant natural esters oil sample main initial performance
| Breakdown voltage (kV) | Dielectric loss (%) | Acid number (mgKOH/g) | Micro- water (mg/kg) |
| 59.1 | 0.836 | 0.03 | 57 |
Breakdown voltage
Breakdown voltage is to weigh the important indicator of dielectric reactance voltage ability., must when filling electrode with dielectric
It need avoid introducing impurity and prevent the generation of bubble.
Micro-water content
Moisture has several kinds of existence forms in insulating oil.Free water can observe by the naked eye, and its presence can be direct
Cause the decline of dielectric strength.Dissolving water will be detected by method physically or chemically.Fluid insulation intensity and water content relation
Closely.
Dielectric loss
Dielectric loss refers to dielectric loss angle tangent, is the important indicator of quality of insulation.Dielectric loss angle is lower to be represented to be situated between
Matter loss is smaller.
Acid number
Acid number is a kind of index for representing free fatty acid content in oil product.Acid number can be used for assessing the aging of oil product
Degree or judge whether oil product chemical composition is changed.Acid number is bigger, and oil product degree of aging is higher.
The breakdown voltage value result of aging different phase
The dielectric loss test result of aging different phase
The acid number test result of aging different phase
Micro- water test result of aging different phase
According to the comparing result of accelerated aging test, it can be found that the natural esters for adding antioxidant of the present invention exist
In ageing process, the amplitude that breakdown voltage reduces is smaller, and dielectric loss, acid number, micro- water increasing degree are slower, illustrate of the present invention
Antioxidant possess more preferable oxidation resistance.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be wrapped
It is contained within protection scope of the present invention.
Claims (7)
- A kind of 1. natural esters insulating oil compound antioxidant, it is characterised in that comprising in glyceride and following component at least It is a kind of：Tert-butylhydroquinone, BHT and propylgallate, wherein, each composition quality accounts for gross mass Percentage meets following relation：Tert-butylhydroquinone of the quality below 10%；BHT of the quality below 3%；Propylgallate of the quality below 3%；The glyceride of quality more than 80%.
- 2. natural esters insulating oil compound antioxidant as claimed in claim 1, it is characterised in that in also comprising the following components It is one or more：Vitamin C, vitamin E and citric acid, wherein, the percentage satisfaction that each composition quality accounts for gross mass is as follows Relation：Vitamin C of the quality below 1%；Vitamin E of the quality below 1%；Citric acid of the quality below 1.5%.
- 3. natural esters insulating oil compound antioxidant as claimed in claim 1 or 2, it is characterised in that also include quality Less than 0.5% colouring agent.
- 4. natural esters insulating oil compound antioxidant as claimed in claim 1 or 2, it is characterised in that contain in the glyceride There is C of the quality below 20%8~C14Fatty glyceride, the C containing quality more than 80%16~C22Fatty glyceride.
- 5. natural esters insulating oil compound antioxidant as claimed in claim 4, it is characterised in that the C8~C14Aliphatic acid is sweet Grease refers mainly to octanoic acid, one or more mixing of certain herbaceous plants with big flowers acid, lauric acid/dodecanoic acid, tetradecylic acid glyceride.
- 6. natural esters insulating oil compound antioxidant as claimed in claim 4, it is characterised in that the C16~C22Aliphatic acid Glyceride refers mainly to one or more mixing of palmitic acid, stearic acid, oleic acid, linoleic acid, leukotrienes, erucic acid.
- 7. natural esters insulating oil is used as the anti-of natural esters insulating oil by the use of compound antioxidant as described in claim any one of 1-6 The application of oxidant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710890859.8A CN107680712B (en) | 2017-09-27 | 2017-09-27 | Compound antioxidant for natural ester insulating oil and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710890859.8A CN107680712B (en) | 2017-09-27 | 2017-09-27 | Compound antioxidant for natural ester insulating oil and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107680712A true CN107680712A (en) | 2018-02-09 |
| CN107680712B CN107680712B (en) | 2020-05-19 |
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| CN201710890859.8A Active CN107680712B (en) | 2017-09-27 | 2017-09-27 | Compound antioxidant for natural ester insulating oil and application thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108841433A (en) * | 2018-06-26 | 2018-11-20 | 南通鼎鑫电池有限公司 | A kind of insulating mineral oil and preparation method thereof applied to lithium battery cooling |
| CN109735385A (en) * | 2019-01-29 | 2019-05-10 | 江苏瑞恩电气股份有限公司 | A kind of insulating mineral oil |
| CN113012769A (en) * | 2021-03-16 | 2021-06-22 | 武汉泽电新材料有限公司 | Method and device for evaluating compatibility of natural ester and solid material |
| CN113881481A (en) * | 2021-09-16 | 2022-01-04 | 广东电网有限责任公司广州供电局 | Natural ester insulating liquid |
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| CN102682869A (en) * | 2012-04-11 | 2012-09-19 | 中国电力科学研究院 | Vegetable insulating oil, and preparation method of vegetable insulating oil |
| CN103891922A (en) * | 2012-12-26 | 2014-07-02 | 丰益(上海)生物技术研发中心有限公司 | Edible oil composition containing water soluble antioxidant and preparation method thereof |
| CN106350148A (en) * | 2016-07-29 | 2017-01-25 | 广东卓原新材料科技有限公司 | Vegetable insulating oil based on shinyleaf yellowhorn oil and application of vegetable insulating oil |
| CN106590813A (en) * | 2016-12-15 | 2017-04-26 | 石寒 | Flame-retardant degradable liquid insulating medium and application thereof |
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| US2944908A (en) * | 1958-07-29 | 1960-07-12 | Eastman Kodak Co | Solvents for fat and oil antioxidants |
| CN102682869A (en) * | 2012-04-11 | 2012-09-19 | 中国电力科学研究院 | Vegetable insulating oil, and preparation method of vegetable insulating oil |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108841433A (en) * | 2018-06-26 | 2018-11-20 | 南通鼎鑫电池有限公司 | A kind of insulating mineral oil and preparation method thereof applied to lithium battery cooling |
| CN109735385A (en) * | 2019-01-29 | 2019-05-10 | 江苏瑞恩电气股份有限公司 | A kind of insulating mineral oil |
| WO2020155440A1 (en) * | 2019-01-29 | 2020-08-06 | 江苏瑞恩电气股份有限公司 | Insulating mineral oil |
| CN113012769A (en) * | 2021-03-16 | 2021-06-22 | 武汉泽电新材料有限公司 | Method and device for evaluating compatibility of natural ester and solid material |
| CN113012769B (en) * | 2021-03-16 | 2024-01-19 | 武汉泽电新材料有限公司 | Compatibility evaluation method and device for natural ester and solid material |
| CN113881481A (en) * | 2021-09-16 | 2022-01-04 | 广东电网有限责任公司广州供电局 | Natural ester insulating liquid |
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| CN107680712B (en) | 2020-05-19 |
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| CB03 | Change of inventor or designer information |
Inventor after: Hu Ting Inventor after: Zhou Zhujun Inventor before: Hu Ting Inventor before: Zhou Zhujun Inventor before: Yu Yang Inventor before: Wu Yihua Inventor before: Zhan Hao |
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Denomination of invention: A compound antioxidant for natural ester insulating oil and its application Effective date of registration: 20220224 Granted publication date: 20200519 Pledgee: Wuhan area branch of Hubei pilot free trade zone of Bank of China Ltd. Pledgor: WUHAN ZEDIAN NEW MATERIAL CO.,LTD. Registration number: Y2022420000045 |
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