CN109514974A - Resistance to ultraviolet flexible insulating material of one kind and preparation method thereof - Google Patents
Resistance to ultraviolet flexible insulating material of one kind and preparation method thereof Download PDFInfo
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- CN109514974A CN109514974A CN201811447254.2A CN201811447254A CN109514974A CN 109514974 A CN109514974 A CN 109514974A CN 201811447254 A CN201811447254 A CN 201811447254A CN 109514974 A CN109514974 A CN 109514974A
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
- B32B38/164—Drying
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B2038/0052—Other operations not otherwise provided for
- B32B2038/0076—Curing, vulcanising, cross-linking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
- B32B38/164—Drying
- B32B2038/168—Removing solvent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/206—Insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/71—Resistive to light or to UV
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Insulating Bodies (AREA)
Abstract
The embodiment of the invention discloses a kind of resistance to ultraviolet flexible insulating materials and preparation method thereof.A kind of resistance to ultraviolet flexible insulating material, including the first insulating paper layer, the first gluing oxidant layer, film layer, the second gluing oxidant layer and the second insulating paper layer set gradually from top to bottom, wherein, gluing oxidant layer is the interior modified adhesive mixed with ultraviolet absorber, and mass content of the ultraviolet absorber in modified adhesive is 5~25%.Through the above way, the insulating materials of the embodiment of the present invention improves its UV resistance while possessing higher insulation performance, it can make the motor even running in ultraviolet environments for a long time, to effectively improve the safety of motor operation and extend the service life of motor.
Description
Technical field
The present embodiments relate to insulating materials technical field, more particularly to a kind of resistance to ultraviolet flexible insulating material and its
Preparation method.
Background technique
The effect of flexible insulating material first is that the different live part of potential is kept apart in motor, due to most
Number motor application is in the inside of machine, the less influence being irradiated with ultraviolet radiation, so existing flexible insulating material is not having
Have and is not involved with resistance to ultraviolet requirement before being modified processing.
Inventor has found that some New-type electric machines need to be designed and be run in ultraviolet environments in the implementation of the present invention, and
Long-term a large amount of ultraviolet irradiation will lead to insulating materials aging and performance decline, after insulating materials is breakdown, cause motor event
Barrier, and different degrees of loss may be caused.
Summary of the invention
It is an object of the invention to overcome problems of the prior art, provide a kind of resistance to ultraviolet flexible insulating material and
Preparation method improves its UV resistance while possessing higher insulation performance, and motor can be made for a long time ultraviolet
Even running in environment.
In order to achieve the above object, the embodiment of the present invention, which adopts the following technical scheme that, provides a kind of resistance to ultraviolet flexible insulation
Material, including set gradually from top to bottom the first insulating paper layer, the first gluing oxidant layer, film layer, the second gluing oxidant layer and
Second insulating paper layer, wherein
The first gluing oxidant layer and the second gluing oxidant layer are the interior modified adhesive mixed with ultraviolet absorber, described
Mass content of the ultraviolet absorber in the modified adhesive is 5~25%.
Optionally, the ultraviolet absorber is one of benzoic acids, benzophenone, benzotriazole or a variety of.
Optionally, the adhesive in the modified adhesive is selected from polyurethane resin, epoxy modified resin and organosilicon
One of resin is a variety of.
Optionally, first insulating paper layer or second insulating paper layer use electric insulation polyester non-woven fabric, aramid fiber
Paper, PPS films, bakelized paper or fish paper.
Optionally, the film layer uses PET film, PBT film, pen film, PPS film or PI film.
The embodiment of the present invention also provides a kind of preparation method of resistance to ultraviolet flexible insulating material as described above, and feature exists
In, comprising the following steps:
(a) it takes a certain amount of ultraviolet absorber to be added in adhesive glue, is sufficiently mixed uniformly, modified adhesive glue is made
Liquid, wherein mass content of the ultraviolet absorber in the modified adhesive is 5~25%；
(b) the modified adhesive glue is coated on the two sides of film substrate；
(c) film substrate with the modified adhesive glue is dried through drying tunnel, removes the modified adhesive glue
In solvent, be made the film substrate with the modified adhesive；
(d) it is bonded insulating paper respectively on the two sides of the film substrate with modified adhesive, is wound after hot pressing is compound,
The resistance to ultraviolet flexible insulating material is obtained after curing process.
Optionally, the ultraviolet absorber is one of benzoic acids, benzophenone, benzotriazole or a variety of.
Optionally, the adhesive be selected from one of polyurethane resin, epoxy modified resin and organic siliconresin or
It is a variety of.
Optionally, first insulating paper layer or second insulating paper layer use electric insulation polyester non-woven fabric, aramid fiber
Paper, PPS films, bakelized paper or fish paper.
Optionally, the film layer uses PET film, PBT film, pen film, PPS film or PI film.
The beneficial effect of the embodiment of the present invention is: being in contrast to the prior art, the insulating materials of the embodiment of the present invention
Including set gradually from top to bottom the first insulating paper layer, the first gluing oxidant layer, film layer, the second gluing oxidant layer and second absolutely
Edge paper layer, wherein the first gluing oxidant layer and the second gluing oxidant layer are the interior modified adhesive mixed with ultraviolet absorber, UV absorption
Mass content of the agent in modified adhesive is 5~25%, is modified by using ultraviolet absorber to adhesive, so that should
Insulating materials has good UV resistance while possessing higher insulation performance, can make motor for a long time in ultraviolet ring
Even running in border, to effectively improve the safety of motor operation and extend the service life of motor.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of resistance to ultraviolet flexible insulating material provided in an embodiment of the present invention.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the purpose of the present invention, method scheme and advantage is more clearly understood
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
Term "and/or" used in this specification includes the arbitrary and all of one or more relevant listed items
Combination.As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
The embodiment of the present invention provides a kind of resistance to ultraviolet flexible insulating material, as shown in Figure 1, the insulating materials include from upper and
Under the first insulating paper layer 10, the first gluing oxidant layer 20, film layer 30, the second gluing oxidant layer 40 and the second insulation that set gradually
Paper layer 50, wherein the first gluing oxidant layer 20 and the second gluing oxidant layer 40 are the interior adhesive mixed with ultraviolet absorber, UV absorption
Mass content of the agent in adhesive is 5~25%.
Ultraviolet absorber have good UV absorbing properties, by ultraviolet absorber mix adhesive in adhesive into
Row is modified, and the UV resistance of modified adhesive obtained rises.Therefore, which is coated uniformly on film layer
The the first gluing oxidant layer 20 and the second gluing oxidant layer 40 that 30 upper and lower surface is formed, may make insulating materials possess it is higher absolutely
Its UV resistance is improved while edge performance.
Optionally, ultraviolet absorber includes one of benzoic acids, benzophenone, benzotriazole or a variety of, on
State ultraviolet absorber UVA (long wave blackspot effect ultraviolet light, wavelength 320-420nm) and UVB (medium wave erythemal effect ultraviolet light,
Wavelength 290-320nm) there is stronger ultraviolet absorption ability, because the ultraviolet light penetration power of above-mentioned two wave band is stronger, machine can be penetrated
Device internal action is in insulating materials；Moreover, above-mentioned ultraviolet absorber has excellent dissolution or dispersion performance in organic solvent, it can
It is uniformly mixed with adhesive, so as to be coated uniformly on the upper and lower surface of film layer 30.
Optionally, the adhesive in modified adhesive is selected from polyurethane resin, epoxy modified resin and organic siliconresin
One of or it is a variety of.
Optionally, the first insulating paper layer 10 or second insulating paper layer 50 use electric insulation polyester non-woven fabric, aramid fiber
Paper, PPS films, bakelized paper or fish paper, to guarantee the heat resistance and good physical mechanical property of insulating materials.
Optionally, the first insulating paper layer 10 or the second insulating paper layer 50 with a thickness of 0.012-0.38mm.
Optionally, film layer 30 is using PET film, PBT film, pen film, PPS film or PI film.
Optionally, film layer 30 with a thickness of 0.015-0.35mm.
The insulating materials of the present embodiment includes the first insulating paper layer 10 set gradually from top to bottom, the first gluing oxidant layer
20, film layer 30, the second gluing oxidant layer 40 and the second insulating paper layer 50, wherein the first gluing oxidant layer 20 and the second glue
Adhesive layer 40 is the interior modified adhesive mixed with ultraviolet absorber, and mass content of the ultraviolet absorber in modified adhesive is 5
~25%.Adhesive is modified by using ultraviolet absorber, so that the insulating materials is possessing higher insulation performance
While improve its UV resistance, thus effectively improve motor operation safety and extend motor service life.
The embodiment of the present invention also provides the preparation method of above-mentioned insulating materials, comprising the following steps:
(a) it takes a certain amount of ultraviolet absorber to be added in adhesive glue, is sufficiently mixed uniformly, modified adhesive glue is made
Liquid, wherein mass content of the ultraviolet absorber in the modified adhesive is 5~25%；
(b) modified adhesive glue is coated on the two sides of film substrate；
(c) film substrate with modified adhesive glue is dried through drying tunnel, is removed in the modified adhesive glue
The film substrate with modified adhesive is made in solvent；
(d) it is bonded insulating paper respectively on the two sides of the film substrate with modified adhesive, is wound after hot pressing is compound, solidified
The resistance to ultraviolet flexible insulating material is obtained after processing.
Optionally, ultraviolet absorber includes one of benzoic acids, benzophenone, benzotriazole or a variety of, on
State ultraviolet absorber UVA (long wave blackspot effect ultraviolet light, wavelength 320-420nm) and UVB (medium wave erythemal effect ultraviolet light,
Wavelength 290-320nm) there is stronger ultraviolet absorption ability, because the ultraviolet light penetration power of above-mentioned two wave band is stronger, machine can be penetrated
Device internal action is in insulating materials；Moreover, above-mentioned ultraviolet absorber has excellent dissolution or dispersion performance in organic solvent, it can
It is uniformly mixed with adhesive, so as to be coated uniformly on the upper and lower surface of film substrate.
Optionally, adhesive is to be selected from one of polyurethane resin, epoxy modified resin and organic siliconresin or a variety of.
Optionally, insulating paper is using electric insulation polyester non-woven fabric, aramid paper, PPS films, bakelized paper or green shell
Paper.
Optionally, insulating paper with a thickness of 0.012-0.38mm.
Optionally, film substrate uses PET film, PBT film, pen film, PPS film or PI film.
Optionally, film substrate with a thickness of 0.015-0.35mm.
Below by way of specific embodiment to the present embodiments relate to resistance to ultraviolet flexible insulating material be illustrated.
Embodiment 1
(a) it takes a certain amount of 2-hydroxy-4-n-octoxybenzophenone to be added in polyurethane adhesive glue, is sufficiently mixed
Uniformly, modified adhesive glue is made, wherein mass content of the ultraviolet absorber in modified polyurethane adhesive is 10%；
(b) it will unreel, immersed in modified adhesive glue with a thickness of the Kapton of 0.1mm (PI film)；
(c) Kapton with modified adhesive glue is dried through drying tunnel, is removed in modified adhesive glue
The Kapton with modified adhesive is made in solvent；
(d) aramid paper for being 0.05mm in the two sides of the Kapton with modified adhesive difference coating thickness, warp
It is wound after hot pressing is compound, obtains resistance to ultraviolet flexible insulating material after curing process, the adhesive content of the insulating materials is
8.6%, UV absorption agent content is 0.86%.
Embodiment 2
(a) the positive hexadecyl ester of a certain amount of 3,5- di-tert-butyl-4-hydroxybenzoic acid and 2- hydroxyl -4- n-octyloxy hexichol are taken
Ketone is added in polyurethane adhesive, is sufficiently mixed uniformly, modified adhesive glue is made, wherein ultraviolet absorber is in modification
Mass content in polyurethane adhesive is 18%；
(b) it will be unreeled with a thickness of the polyethylene naphthalate film (pen film) of 0.1mm, immerse modified adhesive glue
In liquid；
(c) the polyethylene naphthalate film with modified adhesive glue is dried through drying tunnel, removes modified gluing
The polyethylene naphthalate film with modified adhesive is made in solvent in agent glue；
(d) on the two sides of the polyethylene naphthalate film with modified adhesive, difference coating thickness is 0.05mm's
Aramid paper, winds after hot pressing is compound, and resistance to ultraviolet flexible insulating material is obtained after curing process, and the adhesive of the insulating materials contains
Amount is 5.9%, and UV absorption agent content is 1.06%.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the present invention, all to be said using the present invention
Equivalent structure or equivalent flow shift made by bright book and accompanying drawing content is applied directly or indirectly in other relevant technology necks
Domain similarly includes within the scope of the present invention.
Claims (10)
1. a kind of resistance to ultraviolet flexible insulating material, which is characterized in that including set gradually from top to bottom the first insulating paper layer, the
One gluing oxidant layer, film layer, the second gluing oxidant layer and the second insulating paper layer, wherein
The first gluing oxidant layer and the second gluing oxidant layer are the interior modified adhesive mixed with ultraviolet absorber, described ultraviolet
Mass content of the absorbent in the modified adhesive is 5~25%.
2. resistance to ultraviolet flexible insulating material according to claim 1, which is characterized in that
The ultraviolet absorber is one of benzoic acids, benzophenone, benzotriazole or a variety of.
3. resistance to ultraviolet flexible insulating material according to claim 1, which is characterized in that
Adhesive in the modified adhesive is one in polyurethane resin, epoxy modified resin and organic siliconresin
Kind is a variety of.
4. resistance to ultraviolet flexible insulating material according to claim 1, which is characterized in that
First insulating paper layer or second insulating paper layer use electric insulation polyester non-woven fabric, aramid paper, polyphenylene sulfide
Film, bakelized paper or fish paper.
5. resistance to ultraviolet flexible insulating material according to claim 1, which is characterized in that
The film layer uses PET film, PBT film, pen film, PPS film or PI film.
6. a kind of preparation method of resistance to ultraviolet flexible insulating material as described in any one in claim 1-5, which is characterized in that packet
Include following steps:
(a) it takes a certain amount of ultraviolet absorber to be added in adhesive glue, is sufficiently mixed uniformly, modified adhesive glue is made,
Wherein, mass content of the ultraviolet absorber in the modified adhesive is 5~25%；
(b) the modified adhesive glue is coated on the two sides of film substrate；
(c) film substrate with the modified adhesive glue is dried through drying tunnel, is removed in the modified adhesive glue
The film substrate with the modified adhesive is made in solvent；
(d) it is bonded insulating paper respectively on the two sides of the film substrate with modified adhesive, is wound after hot pressing is compound, solidified
The resistance to ultraviolet flexible insulating material is obtained after processing.
7. preparation method according to claim 6, which is characterized in that
The ultraviolet absorber is one of benzoic acids, benzophenone, benzotriazole or a variety of.
8. preparation method according to claim 6, which is characterized in that
The adhesive is to be selected from one of polyurethane resin, epoxy modified resin and organic siliconresin or a variety of.
9. preparation method according to claim 6, which is characterized in that
The insulating paper uses electric insulation polyester non-woven fabric, aramid paper, PPS films, bakelized paper or fish paper.
10. preparation method according to claim 6, which is characterized in that
The film substrate uses PET film, PBT film, pen film, PPS film or PI film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811447254.2A CN109514974A (en) | 2018-11-29 | 2018-11-29 | Resistance to ultraviolet flexible insulating material of one kind and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811447254.2A CN109514974A (en) | 2018-11-29 | 2018-11-29 | Resistance to ultraviolet flexible insulating material of one kind and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109514974A true CN109514974A (en) | 2019-03-26 |
Family
ID=65794838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811447254.2A Pending CN109514974A (en) | 2018-11-29 | 2018-11-29 | Resistance to ultraviolet flexible insulating material of one kind and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110003810A (en) * | 2019-03-20 | 2019-07-12 | 深圳科宏健科技有限公司 | A kind of high temperature gummed tape and its production method |
| CN112391129A (en) * | 2019-08-13 | 2021-02-23 | 瑞安复合材料(深圳)有限公司 | Groove insulation flexible composite material and preparation method thereof |
| CN113963842A (en) * | 2021-10-13 | 2022-01-21 | 瑞安复合材料(深圳)有限公司 | High partial discharge insulating material for oil-cooled motor and preparation method thereof |
| CN114808548A (en) * | 2022-05-18 | 2022-07-29 | 瑞安复合材料(深圳)有限公司 | High partial discharge insulating material for new energy automobile oil-cooled motor and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201725601U (en) * | 2010-07-21 | 2011-01-26 | 株洲市绝缘材料有限责任公司 | Composite forming piece of polyester film and aromatic polyamide paper |
| CN102785836A (en) * | 2012-08-21 | 2012-11-21 | 饶平挚信彩印有限公司 | Ultraviolet resistant transparent food packaging film and preparation method thereof |
-
2018
- 2018-11-29 CN CN201811447254.2A patent/CN109514974A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201725601U (en) * | 2010-07-21 | 2011-01-26 | 株洲市绝缘材料有限责任公司 | Composite forming piece of polyester film and aromatic polyamide paper |
| CN102785836A (en) * | 2012-08-21 | 2012-11-21 | 饶平挚信彩印有限公司 | Ultraviolet resistant transparent food packaging film and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110003810A (en) * | 2019-03-20 | 2019-07-12 | 深圳科宏健科技有限公司 | A kind of high temperature gummed tape and its production method |
| CN110003810B (en) * | 2019-03-20 | 2021-11-05 | 深圳科宏健科技有限公司 | High-temperature adhesive tape and production method thereof |
| CN112391129A (en) * | 2019-08-13 | 2021-02-23 | 瑞安复合材料(深圳)有限公司 | Groove insulation flexible composite material and preparation method thereof |
| CN113963842A (en) * | 2021-10-13 | 2022-01-21 | 瑞安复合材料(深圳)有限公司 | High partial discharge insulating material for oil-cooled motor and preparation method thereof |
| CN114808548A (en) * | 2022-05-18 | 2022-07-29 | 瑞安复合材料(深圳)有限公司 | High partial discharge insulating material for new energy automobile oil-cooled motor and preparation method thereof |
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