CN104610857B - High-storage-stability impregnating varnish for transformer - Google Patents
High-storage-stability impregnating varnish for transformer Download PDFInfo
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- CN104610857B CN104610857B CN201510061838.6A CN201510061838A CN104610857B CN 104610857 B CN104610857 B CN 104610857B CN 201510061838 A CN201510061838 A CN 201510061838A CN 104610857 B CN104610857 B CN 104610857B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- Materials Engineering (AREA)
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- Macromonomer-Based Addition Polymer (AREA)
- Insulating Of Coils (AREA)
Abstract
The invention provides a high-storage-stability impregnating varnish for a transformer. The high-storage-stability impregnating varnish comprises the following components in parts by weight: 100 parts of unsaturated polyester, 25-30 parts of silicone resin, 1.5 parts of benzoic acid, 0.5-0.8 part of benzoyl peroxide, 5-8 parts of N, N-dimethylaniline, 1-1.5 parts of a flatting agent, 10-12 parts of a curing agent and 9-11 parts of an active diluent, wherein the unsaturated polyester comprises maleic anhydride, propylene glycol, polybasic acid and diallyl phthalate at a parts by weight ratio of 4: 3: 2: 1. According to the high-storage-stability impregnating varnish for the transformer, the raw materials, the flatting agent, the curing agent and the active diluent are specially selected so that the properties of the high-storage-stability impregnating varnish for the transformer are significantly improved.
Description
Technical field
The present invention relates to impregnating varnish technical field, particularly relate to a kind of transformator high-storage stability and soak
Stain paint.
Background technology
Along with the demand to electric power that quickly grows of Chinese national economy rises, the most increasingly as power transmission and transformation
Capital equipment transformator in system have also been obtained significant progress.At home, for adapting to and meeting city
Field demand, many manufacturing firms continuously improve product structure, enhance product performance, and introduce from external
Advanced technology & equipment, has done unremitting effort in terms of the exploration of new technology new material, with
This improves constantly the q&r of product, has been obtained for significant progress.Wherein, impact
The factor of power transformer product performance is a lot, the material of such as iron core, the mode of winding winding and insulation material
The performance etc. of material.The impregnating varnish of one of the insulant as transformator, has transformer performance
Vital impact.Impregnating varnish is used for impregnating electric apparatus coil and parts, fills in insulation system
Gap and micropore, form the paint film of continuous formation, and make coil be bonded to one on impregnated thing surface
Solid entirety.Impregnating varnish divides solvent impregnating varnish and the big class of solvent-free immersion paint two, relatively has solvent
For impregnating varnish, solvent-free immersion paint mainly has following advantage: filling rate is high, insulating barrier air-gap-free,
Paint film is smooth solid；Solidification fugitive constituent is low, and environmental pollution is little, and process conditions are good；It is easy to automatization
Impregnation technology.Although the kind of solvent-free insulated impregnating varnish is a lot, but still can not meet and day by day improve
The requirement of transformer insulated performance, especially in terms of the environmental protection, energy-conservation and bin stability of impregnating varnish,
Require that impregnating varnish develops towards the direction of environmental protection and energy saving along with the equipment such as transformator, electrical equipment and electrical, thus right
Between the gel of impregnating varnish, hardening time and stability, combination property proposes the highest requirement.
Summary of the invention
Brief overview about the present invention given below, in order to some side about the present invention is provided
The basic comprehension in face.Should be appreciated that this general introduction is not that the exhaustive about the present invention is summarized.It
It is not intended to determine the key of the present invention or pith, is not the model of the intended limitation present invention
Enclose.Its purpose is only to provide some concept in simplified form, more detailed in this, as discuss after a while
The thin preamble described.
It is an object of the invention to provide a kind of transformator high-storage stability impregnating varnish.
The present invention provides a kind of transformator high-storage stability impregnating varnish, including following parts by weight
Each component: unsaturated polyester (UP) 100 parts, silicones 25-30 part, benzoic acid 1-1.5 part, peroxidating
Benzoyl 0.5-0.8 part, DMA 5-8 part, levelling agent 1-1.5 part, firming agent 10-12
Part, reactive diluent 9-11 part, unsaturated polyester (UP) includes that parts by weight ratio relation is 4:3:2:1's
Maleic anhydride, propylene glycol, polyprotic acid and diallyl phthalate.
The present invention provide transformator high-storage stability impregnating varnish, by raw material, levelling agent,
Special selection on firming agent and reactive diluent so that transformator high-storage stability impregnating varnish
Performance is significantly improved.Specifically, conventional with conventional art transformator polyimides impregnating varnish phase
Ratio has the advantage that
1, shortening the gel time of 60%, solidification rate is effectively improved, and effectively carries
High baking efficiency, decreases the consumption of the energy；
2, the stability of the storage of impregnating varnish is significantly increased.
Detailed description of the invention
Embodiment 1
The transformator high-storage stability impregnating varnish that the embodiment of the present invention provides, including following weight portion
Each component of number: unsaturated polyester (UP) 100 parts, silicones 20 parts, 1 part of benzoic acid, benzoyl peroxide
Formyl 0.5 part, DMA 5 parts, levelling agent 1 part, 10 parts of firming agent, activity is dilute
Release agent 8 parts.
Unsaturated polyester (UP) includes maleic anhydride 40 parts, propylene glycol 30 parts, polyprotic acid 20 parts and neighbour
Dially phthalate 10 parts, levelling agent is PSI, and firming agent is nitrogenous phenol
Urea formaldehyde, reactive diluent is styrene.
Preparation technology is as follows:
Step a, take the unsaturated polyester (UP) 100 parts of weight portion, silicones 20 parts, 1 part of benzoic acid,
Benzoyl peroxide 0.5 part mixes, and is then heated to 158 degrees Celsius, stirs 1-2 hour,
Obtain mixture 1；
Step b, the levelling agent 1 part putting into weight portion in mixture 1 and reactive diluent 8 parts,
It is then heated to 188 degrees Celsius, stirs 1-2 hour, obtain mixture 2；
Step c, the DMA 5 parts putting into weight portion in mixture 2 and firming agent
10 parts, stir 2-3 hour, obtain transformator high-storage stability impregnating varnish after cooling.
The gel time of impregnating varnish is the symbol to impregnating varnish reactivity, generally gel time
The shortest, the reactivity of impregnating varnish is the biggest, can shorten cure cycle further, thus reduce energy consumption,
Reach energy-conservation beneficial effect.But when shortening gel time, the reactivity of impregnating varnish can be rapidly
Become big, the bin stability of impregnating varnish can be caused to reduce, therefore while shortening impregnating varnish hardening time,
The stability of impregnating varnish storage to be also guaranteed.
What the transformator high-storage stability impregnating varnish provided by further illustrating the present invention was brought has
Benefit effect, the present inventor selects polyimides impregnating varnish and the present invention that in conventional art, transformator is conventional
The transformator high-storage stability impregnating varnish provided contrasts.Wherein, the storage of impregnating varnish is stable
The number of property Δ represents, number shows that bin stability is the strongest the most at most.
As shown in Table 1, the transformator high-storage stability impregnating varnish that the present invention is provided by inventor
Gel time and bin stability are tested, and the result obtained is 16 hours, and in conventional art
Conventional polyimides impregnating varnish is compared, and shortens the gel time of 20%, and solidification rate obtains
It is effectively improved, is effectively improved baking efficiency, decrease the consumption of the energy.Meanwhile, impregnating varnish
Bin stability is guaranteed, and meets the requirement of storage, and tool has an unexpected effect.
Table 1
| Test event | Conventional polyimides impregnating varnish | The impregnating varnish that the present invention provides |
| Gel time (h) | 20h | 16h |
| Bin stability | ΔΔΔ | ΔΔΔΔ |
Embodiment 2
The transformator high-storage stability impregnating varnish that the embodiment of the present invention provides, including following weight portion
Each component of number: unsaturated polyester (UP) 100 parts, silicones 23 parts, 1.1 parts of benzoic acid, peroxidating
Benzoyl 0.6 part, DMA 6 parts, levelling agent 1.1 parts, 11 parts of firming agent, live
Property diluent 9 parts.
Unsaturated polyester (UP) includes maleic anhydride 40 parts, propylene glycol 30 parts, polyprotic acid 20 parts and neighbour
Dially phthalate 10 parts, levelling agent is acrylic resin, firming agent Nitrogen-containing Phenolic Resins,
Reactive diluent is dimethylbenzene.
Preparation technology is as follows:
Step a, take the unsaturated polyester (UP) 100 parts of weight portion, silicones 23 parts, 1.1 parts of benzoic acid,
Benzoyl peroxide 0.6 part mixes, and is then heated to 158 degrees Celsius, stirs 1-2 hour,
Obtain mixture 3；
Step b, the levelling agent 1.1 parts putting into weight portion in mixture 3 and reactive diluent 9 parts,
It is then heated to 188 degrees Celsius, stirs 1-2 hour, obtain mixture 4；
Step c, the DMA 6 parts putting into weight portion in mixture 4 and firming agent
11 parts, stir 2-3 hour, obtain transformator high-storage stability impregnating varnish after cooling.
As shown in Table 2, the transformator high-storage stability impregnating varnish that the present invention is provided by inventor
Gel time is tested, and the result obtained is 10 hours, conventional with transformator in conventional art
Polyimides impregnating varnish is compared, and shortens the gel time of 35%, and solidification rate has obtained effectively
Improve, be effectively improved baking efficiency, decrease the consumption of the energy.Transformator is steady with height storage simultaneously
The bin stability of qualitative impregnating varnish has been improved, and preferably meets the requirement of storage, has and expects not
The effect arrived.
Table 2
| Test event | Conventional polyimides impregnating varnish | The impregnating varnish that the present invention provides |
| Gel time (h) | 20h | 13h |
| Bin stability | ΔΔΔ | ΔΔΔΔΔ |
Embodiment 3
The transformator high-storage stability impregnating varnish that the embodiment of the present invention provides, including following weight portion
Each component of number: unsaturated polyester (UP) 100 parts, silicones 28 parts, 1.4 parts of benzoic acid, peroxidating
Benzoyl 0.7 part, DMA 6 parts, levelling agent 1.5 parts, 11 parts of firming agent, live
Property diluent 10.5 parts.
Unsaturated polyester (UP) includes maleic anhydride 40 parts, propylene glycol 30 parts, polyprotic acid 20 parts and neighbour
Dially phthalate 10 parts, levelling agent is that acrylic resin and PSI are by weight
Amount ratio mixes for 1:1, and firming agent is Nitrogen-containing Phenolic Resins and aryl oxide ester diaryl-amine is by weight
2:1 mixes, and reactive diluent is that styrene and phenyl glycidyl ether mix by weight for 1:3
Conjunction forms.
Preparation technology is as follows:
Step a, take the unsaturated polyester (UP) 100 parts of weight portion, silicones 28 parts, 1.4 parts of benzoic acid,
Benzoyl peroxide 0.7 part mixes, and is then heated to 158 degrees Celsius, stirs 1-2 hour,
Obtain mixture 5；
Step b, the levelling agent 1.5 parts putting into weight portion in mixture 5 and reactive diluent 10.5
Part, it is then heated to 188 degrees Celsius, stirs 1-2 hour, obtain mixture 6；
Step c, the DMA 6 parts putting into weight portion to mixture 6 and firming agent 11
Part, stir 2-3 hour, obtain transformator high-storage stability impregnating varnish after cooling.
As shown in Table 3, the transformator high-storage stability impregnating varnish that the present invention is provided by inventor
Gel time is tested, and the result obtained is 10 hours, conventional with transformator in conventional art
Polyimides impregnating varnish is compared, and shortens the gel time of 60%, and solidification rate has obtained effectively
Improve, be effectively improved baking efficiency, decrease the consumption of the energy.Transformator is steady with height storage simultaneously
The bin stability of qualitative impregnating varnish has had and has improved significantly, transformator high-storage stability impregnating varnish
Bin stability be obviously improved, tool has an unexpected effect.
Table 3
| Test event | Conventional polyimides impregnating varnish | The impregnating varnish that the present invention provides |
| Gel time (h) | 20h | 8h |
| Bin stability | ΔΔΔ | ΔΔΔΔΔΔ |
Embodiment 4
The transformator high-storage stability impregnating varnish that the embodiment of the present invention provides, including following weight portion
Each component of number: unsaturated polyester (UP) 100 parts, silicones 29 parts, 1.8 parts of benzoic acid, peroxidating
Benzoyl 0.8 part, DMA 8 parts, levelling agent 1.3 parts, 13 parts of firming agent, live
Property diluent 11 parts.
Unsaturated polyester (UP) includes maleic anhydride 40 parts, propylene glycol 30 parts, polyprotic acid 20 parts and neighbour
Dially phthalate 10 parts, levelling agent be acrylic resin and polydimethylsiloxane by weight
Ratio mixes for 1:2, firming agent Nitrogen-containing Phenolic Resins, and reactive diluent is phenyl glycidyl ether.
Preparation technology is as follows:
Step a, take the unsaturated polyester (UP) 100 parts of weight portion, silicones 29 parts, 1.8 parts of benzoic acid,
Benzoyl peroxide 0.8 part mixes, and is then heated to 158 degrees Celsius, stirs 1-2 hour,
Obtain mixture 7；
Step b, the levelling agent 1.3 parts putting into weight portion to mixture 7 and reactive diluent 11 parts,
It is then heated to 188 degrees Celsius, stirs 1-2 hour, obtain mixture 8；
Step c, put into weight portion DMA 68 parts and firming agent 13 to mixture 8
Part, stir 2-3 hour, obtain transformator high-storage stability impregnating varnish after cooling.
As shown in Table 4, the transformator high-storage stability impregnating varnish that the present invention is provided by inventor
Gel time is tested, and the result obtained is 10 hours, conventional with transformator in conventional art
Polyimides impregnating varnish is compared, and shortens the gel time of 50%, and solidification rate has obtained effectively
Improve, be effectively improved baking efficiency, decrease the consumption of the energy.Transformator is steady with height storage simultaneously
The bin stability of qualitative impregnating varnish has been improved, and preferably meets the requirement of storage, has and expects not
The effect arrived.
Table 4
| Test event | Conventional polyimides impregnating varnish | The impregnating varnish that the present invention provides |
| Gel time (h) | 20h | 10h |
| Bin stability | ΔΔΔ | ΔΔΔΔΔ |
Embodiment 5
The transformator high-storage stability impregnating varnish that the embodiment of the present invention provides, including following weight portion
Each component of number: unsaturated polyester (UP) 100 parts, silicones 30 parts, 2 parts of benzoic acid, benzoyl peroxide
Formyl chloride-1 part, DMA 10 parts, levelling agent 1.5 parts, 15 parts of firming agent, activity
Diluent 12 parts.
Unsaturated polyester (UP) includes maleic anhydride 40 parts, propylene glycol 30 parts, polyprotic acid 20 parts and neighbour
Dially phthalate 10 parts, levelling agent is polydimethylsiloxane, firming agent nitrogenous phenolic aldehyde tree
Fat, reactive diluent is phenyl glycidyl ether.
Preparation technology is as follows:
Step a, take the unsaturated polyester (UP) 100 parts of weight portion, silicones 30 parts, 2 parts of benzoic acid,
Benzoyl peroxide 1 part mixes, and is then heated to 158 degrees Celsius, stirs 1-2 hour,
Mixture 9；
Step b, the levelling agent 1.5 parts putting into weight portion to mixture 9 and reactive diluent 12 parts,
It is then heated to 188 degrees Celsius, stirs 1-2 hour, obtain mixture 10；
Step c, the DMA 10 parts putting into weight portion to mixture 10 and firming agent
15 parts, stir 2-3 hour, obtain transformator high-storage stability impregnating varnish after cooling.
As shown in Table 5, the transformator high-storage stability impregnating varnish that the present invention is provided by inventor
Gel time is tested, and the result obtained is 10 hours, conventional with transformator in conventional art
Polyimides impregnating varnish is compared, and shortens the gel time of 30%, and solidification rate has obtained effectively
Improve, be effectively improved baking efficiency, decrease the consumption of the energy.Transformator is steady with height storage simultaneously
The bin stability of qualitative impregnating varnish is guaranteed, and meets the requirement of storage, has beyond thought
Effect.
Table 5
| Test event | Conventional polyimides impregnating varnish | The impregnating varnish that the present invention provides |
| Gel time (h) | 20h | 14h |
| Bin stability | ΔΔΔ | ΔΔΔΔ |
According to above-mentioned test value, in embodiment 3, each component of following parts by weight is i.e. used:
Unsaturated polyester (UP) 100 parts, silicones 28 parts, 1.4 parts of benzoic acid, benzoyl peroxide 0.7 part,
DMA 6 parts, levelling agent 1.5 parts, 11 parts of firming agent, reactive diluent 10.5
Part.Unsaturated polyester (UP) includes maleic anhydride 40 parts, propylene glycol 30 parts, polyprotic acid 20 parts and
Diallyl phthalate 10 parts, levelling agent be acrylic resin and PSI by
Weight ratio is that 1:1 mixes, firming agent be Nitrogen-containing Phenolic Resins and aryl oxide ester diaryl-amine by weight
Mixing for 2:1, reactive diluent is styrene and phenyl glycidyl ether by weight for 1:3
Mixing, the transformator high-storage stability impregnating varnish being prepared as is stable at gel time and storage
Property all reach optimal, and be better than in conventional art use polyimides impregnating varnish and other embodiment systems
Standby impregnating varnish, tool has an unexpected effect.Analyze its reason, inventor think this and choose
The components such as the reactive diluent preparing transformator high-storage stability impregnating varnish and corresponding content have
Close.
With the material of epoxy-functional in the molecular structure of reactive diluent, this material directly participates in
Curing reaction time prepared by transformator high-storage stability impregnating varnish, maintains the property of cured product
Can, the viscosity of impregnating varnish can also be reduced simultaneously.Through the substantial amounts of experiment of inventor and research, activity is dilute
Release agent be styrene and phenyl glycidyl ether by weight mixing for 1:3, this compound work
Property diluent synergism can occur so that curing reaction speed increase, be significantly reduced hardening time.
Levelling agent uses acrylic resin and PSI to mix for 1:1 by weight,
Firming agent be Nitrogen-containing Phenolic Resins and aryl oxide ester diaryl-amine by weight mixing for 2:1, accelerator is
DMA, these components together with other components with the use of, the change finally prepared
The performance of depressor high-storage stability impregnating varnish is promoted significantly.
Visible, the selection of component and content all right and wrong in the present invention are it will be apparent that these components just
With the selection of content, there is mutually synergism, the most just can make the high storage of transformator of preparation
Stability impregnating varnish has the performance of excellence, meets the demand of practice；Therefore, the technical side of the present invention
Case is non-obvious.
Meanwhile, those skilled in the art know, and in the present invention, levelling agent is acrylic resin, urea aldehyde
One or several mixing in resin, polydimethylsiloxane and PSI；But it is existing
Have remaining levelling agent in technology can also be suitable for the solution of the present invention, protection scope of the present invention it
In.
Meanwhile, those skilled in the art know, and in the present invention, firming agent is Nitrogen-containing Phenolic Resins, virtue
One or several mixing in ether-ether diaryl-amine；But remaining firming agent can also be fitted in prior art
By the solution of the present invention, within protection scope of the present invention.
Meanwhile, those skilled in the art know, and in the present invention, reactive diluent is styrene, diformazan
Benzene, one or several mixing in phenyl glycidyl ether；But remaining activity is dilute in prior art
Release agent and can also be suitable for the solution of the present invention, within protection scope of the present invention.
Last it is noted that above example is only in order to illustrate technical scheme, rather than right
It limits；Although the present invention being described in detail with reference to previous embodiment, this area common
Skilled artisans appreciate that the technical scheme described in foregoing embodiments still can be repaiied by it
Change, or wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, not
The essence making appropriate technical solution departs from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (5)
1. a transformator high-storage stability impregnating varnish, it is characterised in that include following weight
Each component of number: unsaturated polyester (UP) 100 parts, silicones 25-30 part, benzoic acid 1-1.5 part,
Benzoyl peroxide 0.5-0.8 part, DMA 5-8 part, levelling agent 1-1.5 part, Gu
Agent 10-12 part, reactive diluent 9-11 part, described unsaturated polyester (UP) includes parts by weight ratio
Relation is the maleic anhydride of 4:3:2:1, propylene glycol, polyprotic acid and diallyl phthalate,
Described firming agent is that Nitrogen-containing Phenolic Resins and aryl oxide ester diaryl-amine are by weight mixing for 2:1.
2. transformator high-storage stability impregnating varnish as claimed in claim 1, it is characterised in that
Described levelling agent is acrylic resin, Lauxite, polydimethylsiloxane and polymethyl-benzene base silicon
One or several mixing in oxygen alkane.
3. transformator high-storage stability impregnating varnish as claimed in claim 2, it is characterised in that
Described levelling agent is that acrylic resin and PSI are by weight mixing for 1:1.
4. transformator high-storage stability impregnating varnish as claimed in claim 1, it is characterised in that
Described reactive diluent is styrene, one or several mixing in phenyl glycidyl ether.
5. transformator high-storage stability impregnating varnish as claimed in claim 4, it is characterised in that
Described reactive diluent is that styrene and phenyl glycidyl ether are by weight mixing for 1:3.
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| CN102225986A (en) * | 2011-04-21 | 2011-10-26 | 苏州巨峰电气绝缘系统股份有限公司 | Environmentally-friendly type solvent-free impregnating resin and preparation method thereof |
| CN102936449B (en) * | 2012-12-11 | 2016-09-07 | 广州贝特新材料有限公司 | A kind of Halogen-free flame retardant heat conduction insulation warmish and preparation method thereof |
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