CN210575149U - Enameled wire with high heat-resistant stripping performance - Google Patents
Enameled wire with high heat-resistant stripping performance Download PDFInfo
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- CN210575149U CN210575149U CN201921377678.6U CN201921377678U CN210575149U CN 210575149 U CN210575149 U CN 210575149U CN 201921377678 U CN201921377678 U CN 201921377678U CN 210575149 U CN210575149 U CN 210575149U
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- 239000011248 coating agent Substances 0.000 claims abstract description 43
- 238000000576 coating method Methods 0.000 claims abstract description 41
- 229910052802 copper Inorganic materials 0.000 claims abstract description 29
- 239000010949 copper Substances 0.000 claims abstract description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000004020 conductor Substances 0.000 claims abstract description 24
- 239000003973 paint Substances 0.000 claims abstract description 19
- 230000001050 lubricating effect Effects 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000004677 Nylon Substances 0.000 claims abstract description 6
- 229920001778 nylon Polymers 0.000 claims abstract description 6
- 239000004962 Polyamide-imide Substances 0.000 claims abstract description 5
- 229920002312 polyamide-imide Polymers 0.000 claims abstract description 5
- 239000012188 paraffin wax Substances 0.000 claims abstract description 4
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 71
- 230000000694 effects Effects 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 2
- 238000000137 annealing Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 230000032683 aging Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 210000003298 dental enamel Anatomy 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 206010021143 Hypoxia Diseases 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 208000018875 hypoxemia Diseases 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000000861 blow drying Methods 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920003055 poly(ester-imide) Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008521 reorganization Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of enameled wires, and provides an enameled wire with high heat-resistant stripping performance, which comprises a copper conductor, an interface bonding layer, a high-adhesion insulating layer, a high-temperature resistant layer, a wear-resistant coating and a lubricating coating; an interface bonding layer is attached to the surface of the copper conductor; the outer surface of the interface bonding layer is a high-adhesiveness insulating layer which is thermosetting high-temperature resin paint with the heat resistance index of more than 200 ℃; the outer surface of the high-adhesiveness insulating layer is a high-temperature-resistant layer, and the high-temperature-resistant layer is polyamide-imide paint with the heat resistance index of 220 ℃; the outer surface of the high-temperature resistant layer is a wear-resistant coating, and the wear-resistant coating is modified nylon paint with the heat resistance index of 220 ℃ and the low friction coefficient; the outer surface of the wear-resistant coating is a lubricating coating which is a paraffin-based coating agent.
Description
Technical Field
The utility model mainly relates to an enameled wire technical field, concretely relates to high heat-resisting peeling performance enameled wire.
Background
The enameled wire is a main raw material of products such as motors, electric appliances, household electric appliances and the like, particularly, the continuous and rapid growth of the power industry is realized in recent years, the rapid development of the household electric appliances brings a wider field for the application of the enameled wire, and along with the realization, higher requirements are put forward on the enameled wire.
The enameled wire consists of a conductor and an insulating layer, and the heat resistance grade is determined by the insulating layer. The insulating layer of the 180-grade or 200-grade high-temperature composite enameled wire mainly comprises polyester-imide composite polyamide-imide.
The thermal strippability is to evaluate the adhesion of the wire enamel according to a stripping test method in a wire flexibility and adhesion test after the wire enamel is placed in a vented oven and subjected to thermal baking aging at a specified temperature (e.g., 180 ℃) for a specified time (e.g., 96 hours). The adhesive force between the insulating paint and the copper conductor is sharply reduced after the currently produced composite wire is subjected to heat aging at the high temperature of 180 ℃ for 6 hours, and the experimental data of the torsional stripping (heat stripping) is not ideal and is usually 20-30 turns; if the aging time is continuously prolonged to 24 hours, the paint film is directly stripped, and the torsion peeling cannot be carried out.
However, the motor enterprises for new energy automobiles have high requirements on the thermal peeling performance of the enameled wire, such as: at a certain time, customers require that the twist-off data of 200 hot-grade wire with nominal diameter phi 0.75 be maintained above 50 turns after exposure to 180 ℃ air for 96 hours. The requirements are not in the range specified by GB/T6109 and IEC60317 standards, and products on the market at present cannot meet the requirements.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: how to improve the thermal strippability of the enamel wire. In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
a high heat-resistant stripping performance enameled wire comprises a copper conductor, an interface bonding layer, a high-adhesion insulating layer, a high-temperature resistant layer, a wear-resistant coating and a lubricating coating; an interface bonding layer is attached to the surface of the copper conductor; the outer surface of the interface bonding layer is a high-adhesiveness insulating layer which is thermosetting high-temperature resin paint with the heat resistance index of more than 200 ℃; the outer surface of the high-adhesiveness insulating layer is a high-temperature-resistant layer, and the high-temperature-resistant layer is polyamide-imide paint with the heat resistance index of 220 ℃; the outer surface of the high-temperature resistant layer is a wear-resistant coating, and the wear-resistant coating is modified nylon paint with the heat resistance index of 220 ℃ and the low friction coefficient; the outer surface of the wear-resistant coating is a lubricating coating which is a paraffin-based coating agent.
Further, a porous structure is formed on the surface of the copper conductor.
Further, the interface bonding layer is a high-activity bonding layer which comprises a surfactant, a volatile solvent and a resin film forming agent.
Further, the interfacial adhesion layer has a thickness of less than 1 micron.
Further, the thickness of the high-adhesion insulating layer is more than 20 microns and accounts for 40% -60% of the sum of the thicknesses of all coating layers of the whole enameled wire.
Further, the thickness of the high temperature resistant layer accounts for 35% -55% of the sum of the coating thickness of the whole enameled wire.
Further, the thickness of the wear-resistant coating is controlled to be 3-6 microns.
Further, the thickness ratio of the high-adhesion insulating layer to the high-temperature resistant layer is 5: 5, or 6: 4, or 4: 6.
The utility model has the advantages that:
the utility model provides a high heat-resisting peeling performance enameled wire, the insulated paint and the heat-resisting layer of using are high heat-resisting material, when improving the heat-resisting peeling performance of product, have also improved the heat-resisting grade of enameled wire, can reach 220 ℃ level enameled wire operation requirement, and on the other hand copper conductor compliance is better, has applied very low coefficient of friction's modified nylon paint in addition to the surface for mechanical properties such as wear-resisting resistant scraping of enameled wire obviously improve, about 15 ~ 20%.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a transverse cross-sectional view of the present invention;
fig. 3 is a longitudinal sectional view of the present invention;
wherein: 1. a copper conductor; 2. an interfacial bonding layer; 3. a high-adhesion insulating layer; 4. a high temperature resistant layer; 5. a wear-resistant coating; 6. And (4) lubricating the coating.
Detailed Description
The preferred mechanisms and methods of motion realization of the present invention are further described below in conjunction with the figures and the detailed description.
As shown in fig. 1, 2 and 3, the enameled wire with high heat-resistant stripping performance comprises a copper conductor, an interface bonding layer, a high-adhesion insulating layer, a high-temperature-resistant layer, a wear-resistant coating and a lubricating coating.
Wherein, the copper conductor is high extension high flexibility hypoxemia copper, and this copper conductor adopts hypoxemia copper pole phi 8.0mm, when first time attenuation to phi 2.3mm copper pole, increases online voltage annealing mode, promotes crystal structure recovery, reorganization in the copper pole, can make the better enameled wire of compliance twist stripping performance better.
The surface of the copper conductor is adhered with an interface bonding layer, the interface bonding layer is a high-activity bonding layer, the high-activity bonding layer is coated on the surface of the copper conductor, and the high-activity bonding layer mainly comprises a surfactant, a volatile solvent and a resin film-forming agent, is halogen-free, non-toxic, dirt-removing and oxidation-removing, can react with copper metal, and forms a metal and organic matter alloy layer. The high-activity bonding layer reacts with copper metal, the surface of the conductor is deoxidized and coarsened to form a porous structure, the combination area of the surface of the copper conductor is increased, and meanwhile, the thin high-activity bonding layer greatly increases the adhesive force between the copper conductor and the high-adhesiveness insulating layer. The coating thickness was < 1 micron, not counting the total thickness.
The outer surface of the interface bonding layer is a high-adhesiveness insulating layer which is thermosetting high-temperature resin paint with the heat resistance index of more than 200 ℃; the resin has excellent adhesion to the interfacial adhesive layer. The design thickness of the high-adhesion insulating layer is more than 20 microns, and the high-adhesion insulating layer accounts for 40% -60% of the sum of the thicknesses of all coatings of the whole enameled wire.
The outer surface of the high-adhesion insulating layer is a high-temperature resistant layer, the high-temperature resistant layer is polyamide-imide paint with the heat resistance index of 220 ℃, the cracking speed of the high-adhesion insulating layer in the continuous high-temperature aging process is slowed down, and meanwhile, the mechanical performance of the whole coating is enhanced. The coating thickness accounts for 35-55% of the sum of the coating thicknesses of the whole enameled wire.
The outer surface of the high temperature resistant layer is a wear-resistant coating, and the wear-resistant coating is modified nylon paint with the heat resistance index of 220 ℃ and the low friction coefficient. The thickness of the wear-resistant coating is controlled to be 3-6 microns, the wear resistance and the scratch resistance of the enameled wire are enhanced, the sliding property is improved, and the mechanical properties of the enameled wire such as wear resistance and scratch resistance are obviously improved by about 15-20%.
The outer surface of the wear-resistant coating is a lubricating coating which is mainly paraffin-based coating agent.
Taking an enameled wire with the diameter of phi 0.75mm as an example, the method adopts the existing enameled wire production system and comprises the following steps:
the method comprises the following steps: and (3) thinning the low-oxygen copper rod with the diameter of 8.0mm to the diameter of 2.3mm by a large drawing machine, and annealing by adopting an online voltage annealing mode.
Step two: and (3) sending the soft wire with the diameter of 2.3mm into continuous drawing and continuous coating production equipment through a pay-off device, paying attention to lubrication protection during drawing, and ensuring that the copper conductor is not scratched or burred after being discharged from a wire die.
Step three: and (3) the copper conductor enters an annealing furnace after being scrubbed by felt and washed by water, the annealing temperature is 480-500 ℃, and the wire body after annealing is sent to a cooling mechanism for water cooling.
Step four: and coating an interface bonding layer on the wire body subjected to blow-drying after cooling by using a die machine, sending the wire body into a baking mechanism to heat to promote the reaction of the surface active agent and the copper conductor, and evaporating the volatile solvent in the high-activity bonding layer component to leave the resin film forming component to be bonded with the copper conductor.
Step five: and then coating a high-adhesion insulating layer and a high-temperature resistant layer, wherein the ratio of the high-adhesion insulating layer to the high-temperature resistant layer is 5: and 5, distributing. And finally coating modified nylon paint.
And step six and step five, sending each painted line body into a baking mechanism to bake and solidify paint liquid, so that the paint film on the surface of the line body is stably attached.
And seventhly, cooling and carrying out online detection on the baked wire body, then sending the wire body into a lubricating coating mechanism to coat surface lubricating oil, and sending the wire body into a take-up mechanism to take up the wire. The final baked product wire outer diameter is phi 0.816-0.818.
The test result of the scheme is as follows: exposing the phi 0.75 line in air at 180 ℃ for 96 hours, and keeping the torsional peeling data above 65; exposed to air at 180 deg.c for 144 hr, and maintained at 50 rpm.
The ratio of the high-adhesion insulating layer to the high-temperature resistant layer may be adjusted to 6: 4 or 4: 6, instead of 5: 5.
Finally, it should be noted that: although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications, equivalents, improvements and the like can be made in the technical solutions of the foregoing embodiments or in some technical features of the foregoing embodiments, but all modifications, equivalents, improvements and the like within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. The enameled wire with high heat-resistant stripping performance is characterized in that: the copper-clad plate comprises a copper conductor, an interface bonding layer, a high-adhesion insulating layer, a high-temperature resistant layer, a wear-resistant coating and a lubricating coating; an interface bonding layer is attached to the surface of the copper conductor; the outer surface of the interface bonding layer is a high-adhesiveness insulating layer which is thermosetting high-temperature resin paint with the heat resistance index of more than 200 ℃; the outer surface of the high-adhesiveness insulating layer is a high-temperature-resistant layer, and the high-temperature-resistant layer is polyamide-imide paint with the heat resistance index of 220 ℃; the outer surface of the high-temperature resistant layer is a wear-resistant coating, and the wear-resistant coating is modified nylon paint with the heat resistance index of 220 ℃ and the low friction coefficient; the outer surface of the wear-resistant coating is a lubricating coating which is a paraffin-based coating agent.
2. The enameled wire with high thermal peeling resistance according to claim 1, wherein: and a porous structure is formed on the surface of the copper conductor.
3. The enameled wire with high thermal peeling resistance according to claim 1, wherein: the interface bonding layer is a high-activity bonding layer which comprises a surfactant, a volatile solvent and a resin film forming agent.
4. The enameled wire with high thermal peeling resistance according to claim 1, wherein: the interfacial bonding layer has a thickness of less than 1 micron.
5. The enameled wire with high thermal peeling resistance according to claim 1, wherein: the thickness of the high-adhesion insulating layer is more than 20 microns, and the high-adhesion insulating layer accounts for 40% -60% of the sum of the thicknesses of all coating layers of the whole enameled wire.
6. The enameled wire with high thermal peeling resistance according to claim 1, wherein: the thickness of the high-temperature resistant layer accounts for 35% -55% of the sum of the thicknesses of the whole enamelled wire coatings.
7. The enameled wire with high thermal peeling resistance according to claim 1, wherein: the thickness of the wear-resistant coating is controlled to be 3-6 microns.
8. The enameled wire with high thermal peeling resistance according to claim 1, wherein: the thickness ratio of the high-adhesion insulating layer to the high-temperature resistant layer is 5: 5, 6: 4 or 4: 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921377678.6U CN210575149U (en) | 2019-08-22 | 2019-08-22 | Enameled wire with high heat-resistant stripping performance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921377678.6U CN210575149U (en) | 2019-08-22 | 2019-08-22 | Enameled wire with high heat-resistant stripping performance |
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| Publication Number | Publication Date |
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| CN210575149U true CN210575149U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921377678.6U Active CN210575149U (en) | 2019-08-22 | 2019-08-22 | Enameled wire with high heat-resistant stripping performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111768905A (en) * | 2020-08-07 | 2020-10-13 | 湖南奇洛电工器材有限公司 | Copper-clad aluminum enameled wire and processing technology thereof |
-
2019
- 2019-08-22 CN CN201921377678.6U patent/CN210575149U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111768905A (en) * | 2020-08-07 | 2020-10-13 | 湖南奇洛电工器材有限公司 | Copper-clad aluminum enameled wire and processing technology thereof |
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