CN107629413A - A kind of preparation method of bacteria cellulose epoxy resin flexible transformer encapsulating material - Google Patents
A kind of preparation method of bacteria cellulose epoxy resin flexible transformer encapsulating material Download PDFInfo
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- CN107629413A CN107629413A CN201710952833.1A CN201710952833A CN107629413A CN 107629413 A CN107629413 A CN 107629413A CN 201710952833 A CN201710952833 A CN 201710952833A CN 107629413 A CN107629413 A CN 107629413A
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- bacteria cellulose
- epoxy resin
- encapsulating material
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- resin flexible
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Abstract
The invention discloses a kind of preparation method of bacteria cellulose epoxy resin flexible transformer encapsulating material, ultrasonic disperse in aqueous acetic acid is added after first bacteria cellulose is crushed to handle to obtain bacteria cellulose slurry, then it is well mixed with styrene-butadiene latex and carries out centrifugal spray drying using atomizer drier and obtain bacteria cellulose butadiene-styrene rubber hydridization powder, then is mixed evenly with epoxy resin, curing agent to obtain bacteria cellulose epoxy resin flexible transformer encapsulating material.Transformer enclosure material prepared by the present invention has the characteristics of high tenacity, shock resistance are good, is not susceptible to ftracture, fails, and reliability is high, service life length.
Description
Technical field
The present invention relates to transformer material technical field, more particularly to a kind of bacteria cellulose-epoxy resin flexibility transformation
The preparation method of device encapsulating material.
Background technology
With the rapid development of electronics industry, the application of transformer is more and more extensive, and people also carry to the performance of transformer
Higher requirement is gone out.Dry-type transformer is widely used in the field such as local lighting, skyscraper, airport, harbour CNC plant equipment
Institute, in occupation of critical role in China's transformer market.In dry-type transformer, the encapsulating material for coil cast is very big
The performance of transformer is affected in degree.
Epoxy resin has excellent insulating properties, fire resistance and adhesive property, and cure shrinkage and linear expansion coefficient are small,
Good stability of the dimension, good manufacturability, combination property is splendid, is the conventional encapsulating material of dry-type transformer.However, traditional epoxy
The toughness of resin-encapsulated material is poor, easily ftractures, encapsulating material is failed, influence the service life of transformer.And
Transformer is affected by vibrations in the process of running often in the state of vibration, not only increases epoxy encapsulation material
Expect the possibility of cracking, so that the reliability of transformer reduces, but also noise can be produced, influence work, the life of surrounding
Environment.Therefore, it is necessary to the performance of existing transformer enclosure material is made improvements.
The content of the invention
The defects of the object of the invention is exactly to make up prior art, there is provided a kind of high tenacity, shock resistance are good, are not easy
Cracking, the preparation method of the bacteria cellulose-epoxy resin flexible transformer encapsulating material to fail occurs.
The present invention is achieved by the following technical solutions：
A kind of preparation method of bacteria cellulose-epoxy resin flexible transformer encapsulating material, comprises the following steps：
（1）By weight 1 after bacteria cellulose is crushed：（10-15）Mixed with the aqueous acetic acid that mass fraction is 6-10%
It is even, ultrasonic disperse processing 1-2h, pH is then adjusted to 6-7 with sodium hydroxide, obtains bacteria cellulose slurry；
（2）By step（1）Obtained bacteria cellulose slurry and styrene-butadiene latex that solid content is 20-30% by volume 1：（0.3-
0.5）It is well mixed, centrifugal spray drying then is carried out using atomizer drier, obtains bacteria cellulose-butadiene-styrene rubber
Hydridization powder；
（3）By 80-100 parts by weight epoxy resin, 10-15 parts by weight steps（2）Described bacteria cellulose-butadiene-styrene rubber hydridization
Stirred after powder and the mixing of 20-30 parts by weight curing agent, obtain bacteria cellulose-epoxy resin flexible transformer package material
Material.
The power of the ultrasonic disperse processing is 400-600W.
The particle diameter of emulsion particle is 60-100nm in the styrene-butadiene latex.
The step（2）The condition of middle centrifugal spray drying is 200-220 DEG C of inlet temperature, rotor speed 20000-
25000r/min。
The curing agent is polyamide curing agent.
The step（3）In stirring condition be 50-60 DEG C, 0.5-1h.
It is an advantage of the invention that：
The present invention adds ultrasonic disperse in aqueous acetic acid and handles to obtain bacteria cellulose slurry after first bacteria cellulose is crushed,
Then it is well mixed with styrene-butadiene latex and carries out centrifugal spray drying using atomizer drier and obtains bacteria cellulose-fourth
Benzene rubber hydridization powder, then be mixed evenly with epoxy resin, curing agent to obtain bacteria cellulose-epoxy resin flexibility transformation
Device encapsulating material.The present invention, can by the way that bacteria cellulose and butadiene-styrene rubber hydridization are formed into flexible compound energy dissipation system
Increase the ability of absorption, dissipation and decay of the material to elastic wave energy, so as to effectively lift the anti-of epoxy resin encapsulating material
Vibration performance, and can improve the toughness of epoxy resin encapsulating material, encapsulating material is not susceptible to ftracture, failed.Present invention system
Standby transformer enclosure material has the characteristics of high tenacity, shock resistance are good, is not susceptible to ftracture, fails, and reliability is high, makes
Use long lifespan.
Embodiment
A kind of preparation method of bacteria cellulose-epoxy resin flexible transformer encapsulating material, comprises the following steps：
（1）By weight 1 after bacteria cellulose is crushed：10 are well mixed with the aqueous acetic acid that mass fraction is 6%, ultrasound
Decentralized processing 1h, pH is then adjusted to 6 with sodium hydroxide, obtains bacteria cellulose slurry；
（2）By step（1）Obtained bacteria cellulose slurry and styrene-butadiene latex that solid content is 20% by volume 1：0.3 mixing
Uniformly, centrifugal spray drying then is carried out using atomizer drier, obtains bacteria cellulose-butadiene-styrene rubber hydridization powder
Body；
（3）By 80 parts by weight epoxy resin, 10 parts by weight steps（2）Described bacteria cellulose-butadiene-styrene rubber hydridization powder and
Stirred after the mixing of 20 parts by weight curing agent, obtain bacteria cellulose-epoxy resin flexible transformer encapsulating material.
The power of the ultrasonic disperse processing is 400W.
The particle diameter of emulsion particle is 60nm in the styrene-butadiene latex.
The step（2）The condition of middle centrifugal spray drying is 200 DEG C of inlet temperature, rotor speed 20000r/
min。
The curing agent is polyamide curing agent.
The step（3）In stirring condition be 50 DEG C, 0.5h.
Claims (6)
1. the preparation method of a kind of bacteria cellulose-epoxy resin flexible transformer encapsulating material, it is characterised in that including following
Step：
（1）By weight 1 after bacteria cellulose is crushed：（10-15）Mixed with the aqueous acetic acid that mass fraction is 6-10%
It is even, ultrasonic disperse processing 1-2h, pH is then adjusted to 6-7 with sodium hydroxide, obtains bacteria cellulose slurry；
（2）By step（1）Obtained bacteria cellulose slurry and styrene-butadiene latex that solid content is 20-30% by volume 1：（0.3-
0.5）It is well mixed, centrifugal spray drying then is carried out using atomizer drier, obtains bacteria cellulose-butadiene-styrene rubber
Hydridization powder；
（3）By 80-100 parts by weight epoxy resin, 10-15 parts by weight steps（2）Described bacteria cellulose-butadiene-styrene rubber hydridization
Stirred after powder and the mixing of 20-30 parts by weight curing agent, obtain bacteria cellulose-epoxy resin flexible transformer package material
Material.
2. a kind of preparation method of bacteria cellulose according to claim 1-epoxy resin flexible transformer encapsulating material,
Characterized in that, the power of the ultrasonic disperse processing is 400-600W.
3. a kind of preparation method of bacteria cellulose according to claim 1-epoxy resin flexible transformer encapsulating material,
Characterized in that, the particle diameter of emulsion particle is 60-100nm in the styrene-butadiene latex.
4. a kind of preparation method of bacteria cellulose according to claim 1-epoxy resin flexible transformer encapsulating material,
Characterized in that, the step（2）The condition of middle centrifugal spray drying is 200-220 DEG C of inlet temperature, rotor speed is
20000-25000r/min。
5. a kind of preparation method of bacteria cellulose according to claim 1-epoxy resin flexible transformer encapsulating material,
Characterized in that, the curing agent is polyamide curing agent.
6. a kind of preparation method of bacteria cellulose according to claim 1-epoxy resin flexible transformer encapsulating material,
Characterized in that, the step（3）In stirring condition be 50-60 DEG C, 0.5-1h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710952833.1A CN107629413A (en) | 2017-10-13 | 2017-10-13 | A kind of preparation method of bacteria cellulose epoxy resin flexible transformer encapsulating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710952833.1A CN107629413A (en) | 2017-10-13 | 2017-10-13 | A kind of preparation method of bacteria cellulose epoxy resin flexible transformer encapsulating material |
Publications (1)
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| CN107629413A true CN107629413A (en) | 2018-01-26 |
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| CN201710952833.1A Pending CN107629413A (en) | 2017-10-13 | 2017-10-13 | A kind of preparation method of bacteria cellulose epoxy resin flexible transformer encapsulating material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112795140A (en) * | 2021-01-04 | 2021-05-14 | 中变集团上海变压器有限公司 | Epoxy resin coil for transformer and processing technology thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360835A (en) * | 2011-08-03 | 2012-02-22 | 扬州华鼎电器有限公司 | Epoxy resin pouring dry type transformer |
| CN104356985A (en) * | 2014-10-15 | 2015-02-18 | 安徽蓝翔电器成套设备有限公司 | Transformer potting glue and preparation method and application thereof |
| CN104693545A (en) * | 2015-03-04 | 2015-06-10 | 南京理工大学 | Bacterial-cellulose-containing water-response sensing rubber film and preparation method thereof |
| CN104788912A (en) * | 2015-04-30 | 2015-07-22 | 江苏铭安电气有限公司 | Insulation castable for dry-type transformer |
| CN106373757A (en) * | 2016-11-08 | 2017-02-01 | 江苏宝亨新电气有限公司 | Combined transformer high-voltage coil |
-
2017
- 2017-10-13 CN CN201710952833.1A patent/CN107629413A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360835A (en) * | 2011-08-03 | 2012-02-22 | 扬州华鼎电器有限公司 | Epoxy resin pouring dry type transformer |
| CN104356985A (en) * | 2014-10-15 | 2015-02-18 | 安徽蓝翔电器成套设备有限公司 | Transformer potting glue and preparation method and application thereof |
| CN104693545A (en) * | 2015-03-04 | 2015-06-10 | 南京理工大学 | Bacterial-cellulose-containing water-response sensing rubber film and preparation method thereof |
| CN104788912A (en) * | 2015-04-30 | 2015-07-22 | 江苏铭安电气有限公司 | Insulation castable for dry-type transformer |
| CN106373757A (en) * | 2016-11-08 | 2017-02-01 | 江苏宝亨新电气有限公司 | Combined transformer high-voltage coil |
Non-Patent Citations (1)
| Title |
|---|
| 宋冰等: "纤维素纳米纤维-丁苯胶乳复合材料的制备与表征", 《中华纸业》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112795140A (en) * | 2021-01-04 | 2021-05-14 | 中变集团上海变压器有限公司 | Epoxy resin coil for transformer and processing technology thereof |
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Application publication date: 20180126 |