CN110054985A - Self-lubricating polyamide acid imide varnish, insulating coating, insulated electric conductor, coil and motor - Google Patents
Self-lubricating polyamide acid imide varnish, insulating coating, insulated electric conductor, coil and motor Download PDFInfo
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- CN110054985A CN110054985A CN201910340323.8A CN201910340323A CN110054985A CN 110054985 A CN110054985 A CN 110054985A CN 201910340323 A CN201910340323 A CN 201910340323A CN 110054985 A CN110054985 A CN 110054985A
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- Prior art keywords
- self
- bismaleimide
- lubricating
- acid imide
- polyamide
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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
- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
- C09D179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C09D179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- 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
- C09D7/65—Additives macromolecular
-
- 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
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/303—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302
- H01B3/306—Polyimides or polyesterimides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Insulated Conductors (AREA)
- Organic Insulating Materials (AREA)
Abstract
The present invention relates to self-lubricating polyamide acid imide varnish, insulating coating, insulated electric conductor, coil and motor, the self-lubricating polyamide acid imide varnish includes: polyamide-imide resin, bismaleimide amine compound and lubricant, wherein the content of the bismaleimide based compound is 10~200wt% of polyamide-imide resin, and the content of the lubricant is 0.5~10wt% of polyamide-imide resin.
Description
Technical field
The present invention relates to self-lubricating polyamide acid imide varnish, insulating coating, insulated electric conductor, coil and motor.
Background technique
Miniaturization, high output recently as motor, it is desirable to which coil itself also minimizes, in a limited space
It is middle to be packed into more insulated electric conductor.Insulated electric conductor typically contains conductor and the insulating coating for being formed in conductor outer peripheral surface.Therefore, it deposits
Insulated electric conductor when being packed into contact with jig due to be easy to be damaged, be easy to happen layer short circuit defect the problem of.For solution
The certainly problem, has attempted the coefficient of friction for reducing epithelium, and one of which is attempted to be to be coated with lubricating oil to epithelial surfaces.But it is this
Method is not only difficult to control the coating weight of lubricant, but also equably coating is very difficult.In addition, lubricant is easy absorption
Dust, foreign matter etc., therefore there is also larger problems in use.In addition have also been attempted in varnish direct dispersion polyethylene wax,
Polytetrafluoroethylene (PTFE) (PTFE) powder etc. is to improve lubricity, but these lubricants are difficult uniform dispersion in varnish, this is inhomogenous
Lubricity unevenness caused by property is also problem to be solved.
Summary of the invention
Technical problems to be solved by the inivention
In view of the above-mentioned problems, the purpose of the present invention is to provide one kind it is not necessary that lubricant applying can be manufactured lubrication on epithelium
The self-lubricating varnish of the excellent insulated electric conductor of property.
Technical means to solve problem
In a first aspect, the present invention provides a kind of self-lubricating polyamide acid imide varnish, it includes: polyamide-imide resins, double
Maleimide amine compound and lubricant, wherein the content of the bismaleimide based compound is polyamidoimide
10~200wt% of resin, the content of the lubricant are 0.5~10wt% of polyamide-imide resin.
Preferably, the lubricant is polyethylene wax.
Preferably, the content of the bismaleimide amine compound is 20~100wt% of polyamide-imide resin.
Preferably, the bismaleimide amine compound is selected from 4,4'- diphenyl methane bismaleimide (4,4'-
Diphenylmethane bismaleimide), double-(3- ethyl -5- methyl -4- maleimidophenyl) methane (Bis-
(3-ethyl-5-methyl-4-maleimidephenyl) methane), 2,2'- it is bis--[4- (4- maleimidophenyl)
Phenyl] propane (2,2 '-Bis- [4- (4-maleimidephenoxy) phenyl] propane), phenylmethane maleimide
(phenylmethane maleimide), phenyl-diformyl bismaleimide (m-phenylene bismaleimide), 4-
Methyl-1,3- phenylene bismaleimide (4-methyl-1,3-phenylene bismaleimide), 1,6'- span come
In acid imide-(2,2,4- trimethyl) hexane (1,6'-bismaleimide- (2,2,4-trimethyl) hexane) at least
It is a kind of.
Second aspect, the present invention provide a kind of insulated hull formed by any of the above-described self-lubricating polyamide acid imide varnish
Film.
The third aspect, the present invention provide a kind of insulated electric conductor containing above-mentioned insulating coating.
Fourth aspect, the present invention provide a kind of coil obtained using above-mentioned insulating coating.
5th aspect, the present invention provide a kind of motor containing above-mentioned coil.
Invention effect
In accordance with the invention it is possible to greatly improve the lubricity of polyamidoimide, obtain that the excellent insulation of lubricity can be manufactured
The self-lubricating varnish of electric wire.
Specific embodiment
The present invention is further illustrated below by way of following embodiments, it should be appreciated that following embodiments are merely to illustrate this
Invention, is not intended to limit the present invention.
The self-lubricating polyamide acid imide varnish of an embodiment of the present invention includes: polyamide-imide resin, span come
Imide series compound and lubricant.
Lubricity can be improved in lubricant in self-lubricating polyamide acid imide varnish, and bismaleimide amine compound can
So that lubricant penetrate into self-lubricating polyamide acid imide varnish formation epithelium (below be also known as " self-lubricating insulated epithelium ",
" epithelium ") surface, to further increase the lubricity of epithelium.
It for the polyamidoimide as basic resin, is not particularly limited, can be used and obtain by conventional method
Polyamidoimide, such as: polyamides obtained from reacting tricarboxylic acid anhydride directly with diisocyanates in polar solvent
Amine acid imide or react tricarboxylic acid anhydride with Diamines in polar solvent and introduce imide bond, then it is different with two again
Cyanate carries out polyamidoimide obtained from amidation.
The content of bismaleimide amine compound can for polyamide-imide resin 10~200wt% (i.e. 10~
200phr), preferably 20~100wt%.If the content of bismaleimide amine compound is less than 10wt%, it is unable to get
Required lubricity；If the content of bismaleimide amine compound is greater than 200wt%, epithelium toughness can be damaged.
Bismaleimide amine compound (or bismaleimide amine derivative) has acid imide skeleton, excellent heat resistance
And the heat resistance of polyamidoimide is not damaged, such as can enumerate 4,4'- diphenyl methane bismaleimide, double-(3- second
Base -5- methyl -4- maleimidophenyl) methane, 2,2'- be bis--[4- (4- maleimidophenyl) phenyl] propane, benzene
Methylmethane maleimide, phenyl-diformyl bismaleimide, 4- methyl-1,3- phenylene bismaleimide, 1,6'- are bis-
Maleimide-(2,2,4- trimethyl) hexane etc..These can be used alone, or two or more merging are used.
The content of lubricant can be polyamide-imide resin 0.5~10wt% (i.e. 0.5~10phr), preferably 1~
5wt%.If the content of lubricant is less than 0.5wt%, it is unable to get required lubricity；If the content of lubricant is greater than
10wt% then cannot achieve the obdurability of epithelium.
The lubricant well known in the art suitable for varnish can be used in lubricant, such as wax class can be used, and can specifically enumerate
The animal waxs such as polyethylene wax, beeswax, spermaceti, the vegetable waxs such as haze tallow, rice bran wax, the mineral waxs such as lignite wax, ceresine, the petroleum such as paraffin
Wax etc..These can be used alone, or two or more merging are used.Wherein preferred polyethylene wax, because it can be with
Inexpensively obtain.
In the self-lubricating polyamide acid imide varnish of embodiment of the present invention, the objects and effects of the present invention is not being influenced
It is can according to need in range containing levelling agent, dispersing agent, antioxidant etc..
In an embodiment of the present invention, by the span for adding 10~200wt% in polyamideimide-based plinth varnish
Carry out the lubricant of imide series compound and 0.5~10wt% and obtains self-lubricating polyamide acid imide varnish.
In one example, the bismaleimide amine system of 10~200wt% is added in polyamideimide-based plinth varnish
Object is closed, after stirring and dissolving, then the lubricant of 0.5~10wt% is added and stirs evenly.It can be primary using such order of addition
Final varnish is made.
Polyamideimide-based plinth varnish can be prepared by methods known in the art as described above, can also be bought.
Self-lubricating polyamide acid imide varnish of the invention can it is coated, be formed by curing self-lubricating insulated epithelium.It should be certainly
Lubricating insulating coating has excellent lubricity, for example, its coefficient of friction can be 0.06~0.1, preferably 0.06~0.07.
Self-lubricating insulated epithelium, which is coated on conductive line surfaces, can be obtained insulated electric conductor.Conducting wire and self-lubricating insulated epithelium it
Between can also have common insulating coating.The thickness of common insulating coating is not particularly limited, and may be, for example, 10~200 μm.From profit
The thickness of sliding insulating coating is not particularly limited, and may be, for example, 1~5 μm.
Insulated electric conductor of the invention can be used for preparing coil.The coil can be used for manufacturing motor, such as EV, HEV electricity consumption
Motivation etc..
Enumerate embodiment further below with the present invention will be described in detail.It will similarly be understood that following embodiment is served only for this
Invention is further described, and should not be understood as limiting the scope of the invention, those skilled in the art is according to this hair
Some nonessential modifications and adaptations that bright above content is made all belong to the scope of protection of the present invention.Following examples are specific
Technological parameter etc. is also only an example in OK range, i.e. those skilled in the art can be done properly by the explanation of this paper
In the range of select, and do not really want to be defined in hereafter exemplary specific value.
The preparation method of self-lubricating varnish
Bismaleimide is added in polyamideimide-based plinth varnish (live in well Chemical Co., Ltd. Ulmide-AI)
Based compound adds polyethylene wax and stirs 1 hour, obtain self-lubricating varnish in 60 DEG C of stirrings to after dissolving.Each embodiment and
Additive and its additive amount of comparative example etc. are referring to table 1.
The manufacturing method of electric wire
Broken using above-mentioned self-lubricating varnish production enameled wire specifically, casting in bronze is made, is extended, stretches line and softening
Face is the electric conductor that round and average diameter is 1mm, Ulmide-AI is coated on to the outer peripheral surface of electric conductor, then in Ulmide-
The self-lubricating varnish as made from the above method is coated on AI layers, heating furnace inlet temperature be 350 DEG C, heating furnace go out
Mouth temperature roasts under conditions of being 450 DEG C, so that insulating layer be laminated, obtains insulated electric conductor.The epithelium of insulated electric conductor includes two layers,
Lower layer is the insulating coating that Ulmide-AI is formed, and upper layer is the lubricating film that self-lubricating varnish is formed.Each embodiment and comparative example
In the thickness of each layer be shown in Table 1.
Measuring friction coefficient method
Two electric wires are pasted on horizontal table, are placed on the weight object that two electric wires have been pasted in bottom, on it with 10cm/
It is minute mobile, power at this time is measured, divided by the load of weight object is coefficient of friction by the power.It the results are shown in Table 1.
One direction frictional dissipation measuring method
It is measured according to the 6-1 of JIS C 3216-3 2011.It the results are shown in Table 1.
Flexible measuring method
Pliability is to indicate the index of epithelium toughness, and pliability test is commented based on 2011 5.1.1 of JIS C3216-3
Valence.In " pliability " column of table 1,1d indicates electric wire diameter itself.For example, if it is diameter be 1.0mm electric wire, then when
1d is denoted as when not cracking on the stick of diameter 1.0mm.2d is then 2.0mm.2d is denoted as if not cracking when cracking 2d when 1d.
Table 1
As it can be seen from table 1 containing bismaleimide amine compound in embodiment 1~11 simultaneously compared with comparative example 1
And lubricant obtains excellent lubricity thus, it is possible to reduce coefficient of friction.In addition, working as bismaleimide as shown in comparative example 2
When the content of amine compound is less than 10phr, coefficient of friction is larger.As shown in comparative example 3,4, when bismaleimide amine system chemical combination
When the content of object is more than 200phr or when lubricant content is more than 10phr, epithelium toughness is poor.
Claims (8)
1. a kind of self-lubricating polyamide acid imide varnish is, characterized by comprising: polyamide-imide resin, bismaleimide
Amine compound and lubricant, wherein the content of the bismaleimide based compound is the 10 of polyamide-imide resin
~200wt%, the content of the lubricant are 0.5~10wt% of polyamide-imide resin.
2. self-lubricating polyamide acid imide varnish according to claim 1, which is characterized in that the lubricant is polyethylene
Wax.
3. self-lubricating polyamide acid imide varnish according to claim 1 or 2, which is characterized in that the bismaleimide
The content of amine compound is 20~100wt% of polyamide-imide resin.
4. self-lubricating polyamide acid imide varnish according to any one of claim 1 to 3, which is characterized in that described double
Maleimide amine compound is selected from 4,4'- diphenyl methane bismaleimide, the double-(Malaysia 3- ethyl -5- methyl -4- acyl
Imido grpup phenyl) methane, 2,2'- be bis--[4-(4- maleimidophenyl) phenyl] propane, phenylmethane maleimide,
Between phenyl-diformyl bismaleimide, 4- methyl-1,3- phenylene bismaleimide, 1,6'- bismaleimide-(2,2,
At least one of 4- trimethyl) hexane.
5. a kind of insulating coating formed by self-lubricating polyamide acid imide varnish according to any one of claims 1 to 4.
6. a kind of insulated electric conductor containing the insulating coating described in claim 5.
7. a kind of coil obtained using insulating coating as claimed in claim 6.
8. a kind of motor containing coil as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910340323.8A CN110054985B (en) | 2019-04-25 | 2019-04-25 | Self-lubricating polyamide-imide varnish, insulating film, insulated wire, coil, and motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910340323.8A CN110054985B (en) | 2019-04-25 | 2019-04-25 | Self-lubricating polyamide-imide varnish, insulating film, insulated wire, coil, and motor |
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| Publication Number | Publication Date |
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| CN110054985A true CN110054985A (en) | 2019-07-26 |
| CN110054985B CN110054985B (en) | 2021-07-09 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104449341A (en) * | 2013-09-16 | 2015-03-25 | 丹阳四达化工有限公司 | Self-lubricating polyamidoimide enamelled wire paint and preparation method thereof |
| CN104788935A (en) * | 2015-04-17 | 2015-07-22 | 广西藤县通轩立信化学有限公司 | Heat-resisting resin composition |
| CN107107558A (en) * | 2015-01-30 | 2017-08-29 | 松下知识产权经营株式会社 | Two-sided metal-clad and its manufacture method |
-
2019
- 2019-04-25 CN CN201910340323.8A patent/CN110054985B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104449341A (en) * | 2013-09-16 | 2015-03-25 | 丹阳四达化工有限公司 | Self-lubricating polyamidoimide enamelled wire paint and preparation method thereof |
| CN107107558A (en) * | 2015-01-30 | 2017-08-29 | 松下知识产权经营株式会社 | Two-sided metal-clad and its manufacture method |
| CN104788935A (en) * | 2015-04-17 | 2015-07-22 | 广西藤县通轩立信化学有限公司 | Heat-resisting resin composition |
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| CN110054985B (en) | 2021-07-09 |
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