CN111875927A - Motor coil preparation method based on 3D printing conductive material - Google Patents
Motor coil preparation method based on 3D printing conductive material Download PDFInfo
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- CN111875927A CN111875927A CN202010769151.9A CN202010769151A CN111875927A CN 111875927 A CN111875927 A CN 111875927A CN 202010769151 A CN202010769151 A CN 202010769151A CN 111875927 A CN111875927 A CN 111875927A
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Images
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/103—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing an organic binding agent comprising a mixture of, or obtained by reaction of, two or more components other than a solvent or a lubricating agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/107—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing organic material comprising solvents, e.g. for slip casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
- B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
- B33Y70/10—Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/08—Forming windings by laying conductors into or around core parts
- H02K15/085—Forming windings by laying conductors into or around core parts by laying conductors into slotted stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/08—Forming windings by laying conductors into or around core parts
- H02K15/09—Forming windings by laying conductors into or around core parts by laying conductors into slotted rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/02—Windings characterised by the conductor material
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/30—Windings characterised by the insulating material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/327—Aluminium phosphate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Composite Materials (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Polymers & Plastics (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Windings For Motors And Generators (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Epoxy Resins (AREA)
Abstract
The application discloses a motor coil preparation method based on 3D printing conductive material, which comprises the following steps: the stator is provided with a plurality of through grooves which penetrate through the stator, the through grooves are evenly distributed along the circumferential direction of the stator at equal intervals, and the specific winding mode is as follows: firstly, a layer of 3D printing insulating material is attached to the inner wall of the through groove through a 3D printer, and then the 3D printing conductive material is filled in the insulating material through the 3D printer; or printing a 3D printing conductive material through a 3D printer in the through groove to form a conductor, and then printing a 3D printing insulating material through the 3D printer at the periphery of the conductor. The invention realizes the automation of stator winding, and in addition, different motors do not need special winding and inserting tools, thereby reducing the production cost of the motor, reducing the labor intensity of motor production and improving the production efficiency of the motor. The development period of new motor products is shortened.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a motor coil preparation method based on a 3D printing conductive material.
Background
The stator is the stationary part of the motor. The stator consists of three parts, namely a stator iron core, a stator winding and a machine base. The main function of the stator is to generate a rotating magnetic field, and the main function of the rotor is to be cut by magnetic lines of force in the rotating magnetic field to generate current.
The structure of the motor winding mainly comprises the following types:
first, form the magnetic pole to distinguish with the stator winding
The stator winding can be divided into two types of pole-displaying type and consequent pole type according to the relation between the number of poles of the motor and the number of actual poles formed by the distribution of the winding.
1. Display pole type winding
In a salient pole type winding, each coil forms a magnetic pole, and the number of the coils of the winding is equal to that of the magnetic poles.
In the salient pole type winding, in order to enable the polarities N and S of the magnetic poles to be mutually spaced, the directions of currents in two adjacent coils must be opposite, namely the two adjacent coils must be connected in a mode that the tail end is connected with the tail end, the head end is connected with the head end, and the two adjacent coils are connected in a reverse series mode.
2. Consequent pole type winding
In consequent pole windings, each coil forms two poles, the number of coils of the winding being half of the number of poles, since the other half of the poles are formed jointly by the magnetic lines of force of the poles generated by the coils.
In consequent pole windings, the polarity of the magnetic poles formed by each coil is the same, so that the direction of the current flow in all the coils is the same, i.e. two adjacent coils should be connected end to end, i.e. in series.
Secondly, distinguishing the shape of the stator winding and the embedded wiring mode
The stator winding can be divided into a centralized type and a distributed type according to the winding shape of the coil and different embedding wiring modes.
1. Centralized winding
The concentrated winding is generally composed of only one or a few rectangular frame coils. After winding, the winding is bound and shaped by a yarn band, and then the winding is embedded on the iron core of the salient magnetic pole after paint dipping and drying treatment. The windings are used for DC motor, exciting coil of universal motor and main pole winding of single-phase shaded pole motor.
2. Distributed winding
The motor stator adopting distributed winding has no convex pole palm, and each magnetic pole is formed by embedding and wiring one or more coils according to a certain rule to form a coil group. Distributed windings can be divided into two types, namely concentric type and overlapped type according to different arrangement forms of embedded wiring.
(1) The concentric winding is a plurality of rectangular coils with different sizes in the same coil group, and the rectangular coils are embedded and arranged in a zigzag mode one by one according to the position of the same center. The concentric winding is divided into single layer and multilayer. The stator winding of single-phase motor and partial small power three-phase asynchronous motor adopts this type.
(2) The lap winding is a type that all coils are completely the same in shape and size, one coil side is embedded in each slot, and the coil sides are overlapped and uniformly distributed at the outer end of each slot. The laminated winding is divided into a single-layer laminated winding and a double-layer laminated winding. Only one coil side is embedded in each slot and is a single-layer lap winding or a single lap winding; two coil sides which belong to different coil groups are embedded in each slot and are double-layer lap windings or double lap windings. The stacked winding has the branch of single-double circle cross wiring arrangement and single-double layer mixed wiring arrangement due to different changes of the embedded wiring mode; the embedded shape of the winding end is called a chain winding or a basket winding, and actually both are stacked windings. The stator winding of the general three-phase asynchronous motor adopts a lap winding more.
Three, rotor winding
The rotor winding is basically classified into a squirrel cage type and a winding type. The squirrel-cage rotor has a simpler structure, the windings of the squirrel-cage rotor are embedded with copper bars in the past, cast aluminum is mostly adopted at present, and the special double-squirrel-cage rotor has two groups of squirrel-cage bars. The winding type rotor winding is the same as the stator winding, and is also a split type and another wave type winding. The wave winding has similar shape to the laminated winding but different wiring mode, and its basic elements are not the whole coil, but single-turn unit coils, which are embedded and welded one by one to form coil group. The wave winding is generally applied to a rotor winding of a large alternating current motor or an armature winding of a medium-large direct current motor.
Most of the existing winding methods adopt a manual winding method, the error rate of the winding method is high, the winding efficiency is low, and the winding quality is poor, so that a method for preparing a motor coil based on a 3D printing conductive material is urgently needed to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide a method for preparing a motor coil based on a 3D printing conductive material.
In order to solve the technical problems, the invention adopts the following technical scheme:
a preparation method of a motor coil based on a 3D printed conductive material comprises the following steps: the stator or the rotor is provided with a plurality of through grooves which are uniformly distributed along the circumferential direction of the stator or the rotor at equal intervals, and the specific winding mode is as follows: firstly, a layer of 3D printing insulating material is attached to the inner wall of the through groove through a 3D printer, and then the 3D printing conductive material is filled in the insulating material through the 3D printer; or printing a 3D printing conductive material through a 3D printer in the through groove to form a conductor, and then printing a 3D printing insulating material through the 3D printer at the periphery of the conductor.
Preferably, the raw materials of the 3D printing conductive material comprise, by weight: 50-60 parts of nano copper powder, 40-70 parts of nano aluminum powder, 10-20 parts of carbon black, 15-25 parts of polypyrrole, 4-8 parts of carbon nanofiber, 5-15 parts of acetone, 66-9 parts of polyamide, 4-8 parts of alpha-methyl cyanoacrylate, 2-8 parts of diethylenetriamine, 1-5 parts of polyacetylene, 2-8 parts of polyvinyl formal, 4-8 parts of silane coupling agent KH-550, 15-25 parts of modified conductive adhesive and 12-24 parts of forming aid.
Preferably, in the 3D printing conductive material, the modified conductive adhesive comprises the following raw materials in parts by weight: 40-50 parts of polylactic acid, 50-60 parts of polyaniline, 20-40 parts of polyurethane, 15-25 parts of alkoxylated pentaerythritol hexaacrylate, 4-8 parts of vinyl ether, 3-9 parts of graphene, 4-8 parts of aluminum oxide, 6-12 parts of zinc stearate, 4-8 parts of a silane coupling agent KH-5703-9 parts of trimethylolpropane.
Preferably, in the 3D printing conductive material, the modified conductive adhesive is prepared according to the following process: heating polylactic acid, polyaniline and polyurethane to 110-.
Preferably, in the 3D printing conductive material, the forming aid comprises the following raw materials in parts by weight: 80-120 parts of polylactic acid, 40-60 parts of epoxy resin, 4-9 parts of polycarbonate, 4-6 parts of bamboo charcoal powder, 2-8 parts of carbon nanotube powder and 1-3 parts of silane coupling agent KH-5601.
Preferably, in the 3D printing conductive material, the forming aid is prepared by the following process: grinding the bamboo charcoal powder and the carbon nanotube powder into 20-40 meshes of powder, then adding polylactic acid, epoxy resin and polycarbonate, uniformly mixing, heating to 110-3500 ℃ for heat preservation for 20-40min, then adding a silane coupling agent KH-560, uniformly mixing, continuously heating to 120-3500 ℃ for heat preservation for 1-2h, stirring at the rotating speed of 1500-3500r/min for 20-40min, and cooling to room temperature to obtain the forming aid.
Preferably, the 3D printing conductive material is prepared by the following process: uniformly mixing copper nanoparticles, aluminum nanoparticles, carbon black, polypyrrole and carbon nanofiber acetone, adding polyacetylene, polyamide-6, alpha-methyl cyanoacrylate, diethylenetriamine, polyvinyl formal and a silane coupling agent KH-550, uniformly mixing, stirring at 3500 + 5500 r/rotation speed for 1-2h, heating to 120 + 130 ℃, keeping the temperature for 20-40min, adding a modified conductive adhesive and a forming auxiliary agent, uniformly mixing, continuously heating to 150 + 180 ℃, keeping the temperature for 30-50min, and cooling to room temperature to obtain the 3D printing conductive material.
Preferably, the 3D printing insulation material comprises the following raw materials in parts by weight: 80-120 parts of epoxy resin, 15-25 parts of styrene butadiene rubber, 3-5 parts of carbon black N3303, 6-9 parts of methyl tetrahydrophthalic anhydride, 4-6 parts of porcelain powder, 4-8 parts of vinyl triethoxysilane, 9-12 parts of aluminum polyphosphate, 8-14 parts of hydrogen-containing silicone oil, 1-4 parts of an accelerator TMDT, 2-5 parts of zinc oxide, 1-3 parts of stearic acid and 2-6 parts of an anti-aging agent RD.
Preferably, the 3D printing insulation material is prepared by the following process: uniformly mixing epoxy resin, carbon black N330, methyl tetrahydrophthalic anhydride, vitrified powder and vinyl triethoxysilane, heating to 120-; then adding styrene butadiene rubber and aluminum polyphosphate into the base material, uniformly mixing, heating to 110-.
The invention has the following beneficial effects: according to the invention, the electrified conductors and the insulating layers are printed in the through grooves of the stator or the rotor by using the 3D printing technology, so that automatic winding in the stator or the rotor is realized, the automatic winding operation of the stator or the rotor can be realized, the problem that manual winding is easy to make mistakes is avoided, in addition, the winding efficiency and quality are greatly improved, and the quality of the stator or the rotor is ensured.
In addition, the 3D printing conductive material takes nano copper powder, nano aluminum powder, carbon black, polypyrrole and carbon nanofiber as conductive base materials, in addition, polyamide is added as a penetrating agent, acetone, alpha-methyl cyanoacrylate, diethylenetriamine, polyacetylene and polyvinyl formal are taken as dispersing agents, a silane coupling agent KH-550 is taken as a grafting agent, and a modified conductive adhesive and a forming auxiliary agent are added to improve the forming efficiency and the conductive performance of the conductive material, wherein the modified conductive adhesive takes polylactic acid, polyaniline and polyurethane as the base materials, and trimethylolpropane is taken as a chain extender to act on the base materials to realize the extension of unsaturated bonds on the surface of the base materials, and on the basis, the coupling agent realizes the supplement of heat resistance and conductive fillers to realize the supplement of the heat resistance and the conductive properties of the adhesive, and the surface area of a film forming machine material is improved due to the increase of the chain extender, and then the viscosity of the modified conductive adhesive is increased, so that the bonding performance of the 3D printing conductive material is effectively improved, and the connection stability with the insulating material is realized. The forming auxiliary agent takes polylactic acid, epoxy resin and polycarbonate as base materials, bamboo charcoal powder and carbon nano tubes as conductive fillers, and a silane coupling agent KH-560 as a grafting modifier, and is applied to the 3D printed conductive material, so that the forming efficiency and quality of the 3D printed conductive material can be effectively improved, and the forming efficiency and the conductive efficiency of the conductor can be ensured.
After the preparation method of the motor coil is adopted, different motors do not need special winding and inserting tools, so that the production cost of the motor is reduced, the labor intensity of motor production is reduced, and the production efficiency of the motor is improved. The development period of new motor products is shortened.
Drawings
Fig. 1 shows a stator prepared by the method for preparing the motor coil based on the 3D printed conductive material.
The figures are numbered:
1. a stator; 2. the through groove is penetrated; 3. an inner insulating layer; 4. an electrical conductor.
Detailed Description
In order to facilitate a better understanding of the invention, the following examples are given to illustrate, but not to limit the scope of the invention.
In an embodiment, as shown in fig. 1, a method for manufacturing a motor coil based on a 3D printed conductive material according to an embodiment of the present invention includes the following steps: a plurality of through grooves 2 are formed in the stator 1 or the rotor (not shown in the figure), the through grooves 2 are uniformly distributed along the circumferential direction of the stator 1 or the rotor at equal intervals, and the specific winding mode is as follows: firstly, a layer of 3D printing insulating material is attached to the inner wall of the through groove 2 through a 3D printer, so that an inner insulating layer 3 is formed on the inner wall of the through groove 2, then a 3D printing conductive material is filled in the insulating material through the 3D printer, and therefore a conductor is formed in the inner insulating layer 3; or printing 3D printing conductive material through a 3D printer in the through groove 2 to form the electric conductor 4, and then printing 3D printing insulating material through the 3D printer at the periphery of the electric conductor 4.
The 3D printing conductive material comprises the following raw materials in parts by weight: 50-60 parts of nano copper powder, 40-70 parts of nano aluminum powder, 10-20 parts of carbon black, 15-25 parts of polypyrrole, 4-8 parts of carbon nanofiber, 5-15 parts of acetone, 66-9 parts of polyamide, 4-8 parts of alpha-methyl cyanoacrylate, 2-8 parts of diethylenetriamine, 1-5 parts of polyacetylene, 2-8 parts of polyvinyl formal, 4-8 parts of silane coupling agent KH-550, 15-25 parts of modified conductive adhesive and 12-24 parts of forming aid.
The modified conductive adhesive is prepared by the following process: heating 40-50 parts of polylactic acid, 50-60 parts of polyaniline and 20-40 parts of polyurethane according to the parts by weight to 110-, then adding 15-25 parts of alkoxylated pentaerythritol hexaacrylate, 4-8 parts of vinyl ether and 4-8 parts of trimethylolpropane, uniformly mixing, stirring at the rotating speed of 1500-2500r/min for 10-30min, then heating to the temperature of 120-, then heating to 130-.
The forming auxiliary agent is prepared by the following process: grinding 4-6 parts of bamboo charcoal powder and 2-8 parts of carbon nanotube powder into powder of 20-40 meshes, then adding 80-120 parts of polylactic acid, 40-60 parts of epoxy resin and 4-9 parts of polycarbonate, uniformly mixing, heating to 110-.
The 3D printing conductive material is prepared by the following process: uniformly mixing copper nanoparticles, aluminum nanoparticles, carbon black, polypyrrole and carbon nanofiber acetone, adding polyacetylene, polyamide-6, alpha-methyl cyanoacrylate, diethylenetriamine, polyvinyl formal and a silane coupling agent KH-550, uniformly mixing, stirring at 3500 + 5500 r/rotation speed for 1-2h, heating to 120 + 130 ℃, keeping the temperature for 20-40min, adding a modified conductive adhesive and a forming auxiliary agent, uniformly mixing, continuously heating to 150 + 180 ℃, keeping the temperature for 30-50min, and cooling to room temperature to obtain the 3D printing conductive material.
The 3D printing insulating material is prepared by the following process: uniformly mixing 80-120 parts of epoxy resin, 3-5 parts of carbon black N330, 6-9 parts of methyl tetrahydrophthalic anhydride, 4-6 parts of porcelain powder and 4-8 parts of vinyl triethoxysilane, heating to 120-; then adding 15-25 parts of styrene-butadiene rubber and 9-12 parts of aluminum polyphosphate into the base material, uniformly mixing, heating to 110-130 ℃, preserving heat for 20-40min, then adding 8-14 parts of hydrogen-containing silicone oil, 1-4 parts of accelerant TMDT, 2-5 parts of zinc oxide, 1-3 parts of stearic acid and 2-6 parts of antioxidant RD, uniformly mixing, stirring at the rotating speed of 850-1050r/min for 1-2h, and cooling to room temperature to obtain the 3D printing insulating material.
Example 1
As shown in fig. 1, a method for manufacturing a motor coil based on 3D printing of a conductive material includes the following steps: with being equipped with a plurality of logical groove 2 that run through stator 1 on the stator 1, run through logical groove 2 along 1 equidistant evenly distributed of stator circumference, concrete wire winding mode is as follows: firstly, a layer of 3D printing insulating material is attached to the inner wall of the through groove 2 in a penetrating mode through a 3D printer, an inner insulating layer 3 is formed on the inner wall of the through groove 2 in the penetrating mode, then the 3D printing conducting material is filled in the insulating material through the 3D printer, and therefore a conductor is formed in the inner insulating layer 3.
The 3D printing conductive material comprises the following raw materials in parts by weight: 55 parts of nano copper powder, 55 parts of nano aluminum powder, 15 parts of carbon black, 20 parts of polypyrrole, 6 parts of carbon nanofiber, 10 parts of acetone, 67.5 parts of polyamide, 6 parts of alpha-methyl cyanoacrylate, 5 parts of diethylenetriamine, 3 parts of polyacetylene, 5 parts of polyvinyl formal, 6 parts of silane coupling agent KH-5506 parts, 20 parts of modified conductive adhesive and 18 parts of forming aid.
The modified conductive adhesive is prepared by the following process: heating 45 parts of polylactic acid, 55 parts of polyaniline and 30 parts of polyurethane to 120 ℃ according to parts by weight, preserving heat for 30min, then adding 20 parts of alkoxylated pentaerythritol hexaacrylate, 6 parts of vinyl ether and 6 parts of trimethylolpropane, uniformly mixing, stirring at the rotating speed of 2000r/min for 20min, then heating to 130 ℃, preserving heat for 20min, then adding 6 parts of graphene, 6 parts of aluminum oxide, 9 parts of zinc stearate and 6 parts of silane coupling agent KH-570, uniformly mixing, then heating to 140 ℃, preserving heat for 1.5h, then stirring at the rotating speed of 1000r/min for 1.5h, and cooling to room temperature to obtain the modified conductive adhesive.
The forming auxiliary agent is prepared by the following process: grinding 5 parts of bamboo charcoal powder and 5 parts of carbon nanotube powder into 30-mesh powder, then adding 100 parts of polylactic acid, 50 parts of epoxy resin and 6.5 parts of polycarbonate, uniformly mixing, heating to 120 ℃, preserving heat for 30min, then adding 2 parts of silane coupling agent KH-560, uniformly mixing, continuously heating to 135 ℃, preserving heat for 1.5h, then stirring at the rotating speed of 2500r/min for 30min, and cooling to room temperature to obtain the forming aid.
The 3D printing conductive material is prepared by the following process: uniformly mixing copper nanoparticles, aluminum nanoparticles, carbon black, polypyrrole and carbon nanofiber acetone, adding polyacetylene, polyamide-6, alpha-methyl cyanoacrylate, diethylenetriamine, polyvinyl formal and a silane coupling agent KH-550, uniformly mixing, stirring at 4500 r/rotating speed for 1.5h, heating to 125 ℃, keeping the temperature for 30min, adding a modified conductive adhesive and a forming auxiliary agent, uniformly mixing, continuously heating to 165 ℃, keeping the temperature for 40min, and cooling to room temperature to obtain the 3D printing conductive material.
The 3D printing insulating material is prepared by the following process: uniformly mixing 100 parts of epoxy resin, 4 parts of carbon black N330, 7.5 parts of methyl tetrahydrophthalic anhydride, 5 parts of ceramic powder and 6 parts of vinyl triethoxysilane, heating to 125 ℃, keeping the temperature for 20min, stirring at the rotating speed of 2000r/min for 20min, and cooling to room temperature to obtain a base material; then adding 20 parts of styrene-butadiene rubber and 10.5 parts of aluminum polyphosphate into the base material, uniformly mixing, heating to 120 ℃, keeping the temperature for 30min, then adding 11 parts of hydrogen-containing silicone oil, 2.5 parts of accelerant TMDT, 3.5 parts of zinc oxide, 2 parts of stearic acid and 4 parts of antioxidant RD, uniformly mixing, stirring at the rotating speed of 950r/min for 1.5h, and cooling to room temperature to obtain the 3D printing insulating material.
It can be understood that, when the coil winding is based on a rotor, the structure of the rotor adopts a conventional rotor structure, a through groove is formed in the rotor, a layer of 3D printing insulating material is attached to the inner wall of the through groove through a 3D printer, an inner insulating layer is formed on the inner wall of the through groove, and then the 3D printing conductive material is filled in the insulating material through the 3D printer, so that a conductor is formed in the inner insulating layer.
Example 2
As shown in fig. 1, a method for manufacturing a motor coil based on 3D printing of a conductive material includes the following steps: with being equipped with a plurality of logical groove 2 that run through stator 1 on the stator 1, run through logical groove 2 along 1 equidistant evenly distributed of stator circumference, concrete wire winding mode is as follows: printing 3D through the 3D printer and printing conducting material and form electric conductor 4 in penetrating through logical groove 2, then printing 3D through the 3D printer and printing insulating material at the periphery of electric conductor 4.
The 3D printing conductive material comprises the following raw materials in parts by weight: 50 parts of nano copper powder, 70 parts of nano aluminum powder, 10 parts of carbon black, 25 parts of polypyrrole, 4 parts of carbon nanofiber, 15 parts of acetone, 66 parts of polyamide, 8 parts of alpha-methyl cyanoacrylate, 2 parts of diethylenetriamine, 5 parts of polyacetylene, 2 parts of polyvinyl formal, KH-5508 parts of silane coupling agent, 15 parts of modified conductive adhesive and 24 parts of forming aid.
The modified conductive adhesive is prepared by the following process: heating 40 parts of polylactic acid, 60 parts of polyaniline and 20 parts of polyurethane to 130 ℃ according to parts by weight, preserving heat for 20min, then adding 25 parts of pentaerythritol alkoxylate hexaacrylate, 4 parts of vinyl ether and 8 parts of trimethylolpropane, uniformly mixing, stirring at the rotating speed of 1500r/min for 30min, then heating to 120 ℃, preserving heat for 30min, then adding 3 parts of graphene, 8 parts of aluminum oxide, 6 parts of zinc stearate and 9 parts of silane coupling agent KH-570, uniformly mixing, then heating to 130 ℃, preserving heat for 2h, then stirring at the rotating speed of 800r/min for 2h, and cooling to room temperature to obtain the modified conductive adhesive.
The forming auxiliary agent is prepared by the following process: grinding 4 parts of bamboo charcoal powder and 8 parts of carbon nanotube powder into 20-mesh powder, then adding 120 parts of polylactic acid, 40 parts of epoxy resin and 9 parts of polycarbonate, uniformly mixing, heating to 110 ℃, keeping the temperature for 40min, then adding 1 part of silane coupling agent KH-560, uniformly mixing, continuing heating to 150 ℃, keeping the temperature for 1h, then stirring at the rotating speed of 3500r/min for 20min, and cooling to room temperature to obtain the forming aid.
The 3D printing conductive material is prepared by the following process: uniformly mixing copper nanoparticles, aluminum nanoparticles, carbon black, polypyrrole and carbon nanofiber acetone, adding polyacetylene, polyamide-6, alpha-methyl cyanoacrylate, diethylenetriamine, polyvinyl formal and a silane coupling agent KH-550, uniformly mixing, stirring at 3500 r/rotating speed for 2h, heating to 120 ℃, keeping the temperature for 40min, adding a modified conductive binder and a forming aid, uniformly mixing, continuously heating to 150 ℃, keeping the temperature for 50min, and cooling to room temperature to obtain the 3D printing conductive material.
The 3D printing insulating material is prepared by the following process: uniformly mixing 80 parts of epoxy resin, 5 parts of carbon black N330, 6 parts of methyl tetrahydrophthalic anhydride, 6 parts of ceramic powder and 4 parts of vinyl triethoxysilane, heating to 130 ℃, preserving heat for 10min, stirring at the rotating speed of 2500r/min for 10min, and cooling to room temperature to obtain a base material; and then adding 25 parts of styrene-butadiene rubber and 9 parts of aluminum polyphosphate into the base material, uniformly mixing, heating to 130 ℃, preserving heat for 20min, then adding 14 parts of hydrogen-containing silicone oil, 1 part of accelerating agent TMDT, 5 parts of zinc oxide, 1 part of stearic acid and 6 parts of antioxidant RD, uniformly mixing, stirring at the rotating speed of 850r/min for 2h, and cooling to room temperature to obtain the 3D printing insulating material.
Example 3
As shown in fig. 1, a method for manufacturing a motor coil based on 3D printing of a conductive material includes the following steps: with being equipped with a plurality of logical groove 2 that run through stator 1 on the stator 1, run through logical groove 2 along 1 equidistant evenly distributed of stator circumference, concrete wire winding mode is as follows: firstly, a layer of 3D printing insulating material is attached to the inner wall of the through groove 2 in a penetrating mode through a 3D printer, an inner insulating layer 3 is formed on the inner wall of the through groove 2 in the penetrating mode, then the 3D printing conducting material is filled in the insulating material through the 3D printer, and therefore a conductor is formed in the inner insulating layer 3.
The 3D printing conductive material comprises the following raw materials in parts by weight: 60 parts of nano copper powder, 40 parts of nano aluminum powder, 20 parts of carbon black, 15 parts of polypyrrole, 8 parts of carbon nanofiber, 5 parts of acetone, 69 parts of polyamide, 4 parts of alpha-methyl cyanoacrylate, 8 parts of diethylenetriamine, 1 part of polyacetylene, 8 parts of polyvinyl formal, 4 parts of silane coupling agent KH-5504 parts, 25 parts of modified conductive adhesive and 12 parts of forming aid.
The modified conductive adhesive is prepared by the following process: heating 50 parts of polylactic acid, 50 parts of polyaniline and 40 parts of polyurethane to 110 ℃ according to parts by weight, preserving heat for 40min, then adding 15 parts of pentaerythritol alkoxylate hexaacrylate, 8 parts of vinyl ether and 4 parts of trimethylolpropane, uniformly mixing, stirring at the rotating speed of 2500r/min for 10min, then heating to 140 ℃, preserving heat for 10min, then adding 9 parts of graphene, 4 parts of aluminum oxide, 12 parts of zinc stearate and 3 parts of silane coupling agent KH-570, uniformly mixing, then heating to 150 ℃, preserving heat for 1h, then stirring at the rotating speed of 1200r/min for 1h, and cooling to room temperature to obtain the modified conductive binder.
The forming auxiliary agent is prepared by the following process: grinding 6 parts of bamboo charcoal powder and 2 parts of carbon nanotube powder into powder of 40 meshes, then adding 80 parts of polylactic acid, 60 parts of epoxy resin and 4 parts of polycarbonate, uniformly mixing, heating to 130 ℃, keeping the temperature for 20min, then adding 3 parts of silane coupling agent KH-560, uniformly mixing, continuously heating to 120 ℃, keeping the temperature for 2h, then stirring at the rotating speed of 1500r/min for 40min, and cooling to room temperature to obtain the forming aid.
The 3D printing conductive material is prepared by the following process: uniformly mixing copper nanoparticles, aluminum nanoparticles, carbon black, polypyrrole and carbon nanofiber acetone, adding polyacetylene, polyamide-6, alpha-methyl cyanoacrylate, diethylenetriamine, polyvinyl formal and a silane coupling agent KH-550, uniformly mixing, stirring at 5500 r/rotation speed for 1h, heating to 130 ℃, preserving heat for 20min, adding a modified conductive binder and a forming aid, uniformly mixing, continuously heating to 180 ℃, preserving heat for 30min, and cooling to room temperature to obtain the 3D printing conductive material.
The 3D printing insulating material is prepared by the following process: uniformly mixing 120 parts of epoxy resin, 3 parts of carbon black N330, 9 parts of methyl tetrahydrophthalic anhydride, 4 parts of ceramic powder and 8 parts of vinyl triethoxysilane, heating to 120 ℃, preserving heat for 30min, stirring at the rotating speed of 1500r/min for 30min, and cooling to room temperature to obtain a base material; and then adding 15 parts of styrene-butadiene rubber and 12 parts of aluminum polyphosphate into the base material, uniformly mixing, heating to 110 ℃, preserving heat for 40min, then adding 8 parts of hydrogen-containing silicone oil, 4 parts of accelerating agent TMDT, 2 parts of zinc oxide, 3 parts of stearic acid and 2 parts of antioxidant RD, uniformly mixing, stirring at the rotating speed of 1050r/min for 1h, and cooling to room temperature to obtain the 3D printing insulating material.
The above description should not be taken as limiting the invention to the embodiments, but rather, as will be apparent to those skilled in the art to which the invention pertains, numerous simplifications or substitutions may be made without departing from the spirit of the invention, which shall be deemed to fall within the scope of the invention as defined by the claims appended hereto.
Claims (9)
1. A preparation method of a motor coil based on a 3D printed conductive material is characterized by comprising the following steps: the stator or the rotor is provided with a plurality of through grooves which are uniformly distributed along the circumferential direction of the stator or the rotor at equal intervals, and the specific winding mode is as follows: firstly, a layer of 3D printing insulating material is attached to the inner wall of the through groove through a 3D printer, and then the 3D printing conductive material is filled in the insulating material through the 3D printer; or printing a 3D printing conductive material through a 3D printer in the through groove to form a conductor, and then printing a 3D printing insulating material through the 3D printer at the periphery of the conductor.
2. The method for preparing the motor coil based on the 3D printed conductive material according to claim 1, wherein the raw materials of the 3D printed conductive material comprise, by weight: 50-60 parts of nano copper powder, 40-70 parts of nano aluminum powder, 10-20 parts of carbon black, 15-25 parts of polypyrrole, 4-8 parts of carbon nanofiber, 5-15 parts of acetone, 66-9 parts of polyamide, 4-8 parts of alpha-methyl cyanoacrylate, 2-8 parts of diethylenetriamine, 1-5 parts of polyacetylene, 2-8 parts of polyvinyl formal, 4-8 parts of silane coupling agent KH-550, 15-25 parts of modified conductive adhesive and 12-24 parts of forming aid.
3. The method for preparing the motor coil based on the 3D printed conductive material according to claim 2, wherein in the 3D printed conductive material, the modified conductive adhesive comprises the following raw materials in parts by weight: 40-50 parts of polylactic acid, 50-60 parts of polyaniline, 20-40 parts of polyurethane, 15-25 parts of alkoxylated pentaerythritol hexaacrylate, 4-8 parts of vinyl ether, 3-9 parts of graphene, 4-8 parts of aluminum oxide, 6-12 parts of zinc stearate, 4-8 parts of a silane coupling agent KH-5703-9 parts of trimethylolpropane.
4. The method for preparing the motor coil based on the 3D printed conductive material according to claim 3, wherein in the 3D printed conductive material, the modified conductive adhesive is prepared according to the following process: heating polylactic acid, polyaniline and polyurethane to 110-.
5. The method for preparing the motor coil based on the 3D printed conductive material according to claim 2, wherein in the 3D printed conductive material, the molding aid comprises the following raw materials in parts by weight: 80-120 parts of polylactic acid, 40-60 parts of epoxy resin, 4-9 parts of polycarbonate, 4-6 parts of bamboo charcoal powder, 2-8 parts of carbon nanotube powder and 1-3 parts of silane coupling agent KH-5601.
6. The method for preparing the motor coil based on the 3D printed conductive material according to claim 5, wherein in the 3D printed conductive material, the forming aid is prepared by the following process: grinding the bamboo charcoal powder and the carbon nanotube powder into 20-40 meshes of powder, then adding polylactic acid, epoxy resin and polycarbonate, uniformly mixing, heating to 110-3500 ℃ for heat preservation for 20-40min, then adding a silane coupling agent KH-560, uniformly mixing, continuously heating to 120-3500 ℃ for heat preservation for 1-2h, stirring at the rotating speed of 1500-3500r/min for 20-40min, and cooling to room temperature to obtain the forming aid.
7. The method for preparing a motor coil based on a 3D printed conductive material according to claim 2, wherein the 3D printed conductive material is prepared by the following process: uniformly mixing copper nanoparticles, aluminum nanoparticles, carbon black, polypyrrole and carbon nanofiber acetone, adding polyacetylene, polyamide-6, alpha-methyl cyanoacrylate, diethylenetriamine, polyvinyl formal and a silane coupling agent KH-550, uniformly mixing, stirring at 3500 + 5500 r/rotation speed for 1-2h, heating to 120 + 130 ℃, keeping the temperature for 20-40min, adding a modified conductive adhesive and a forming auxiliary agent, uniformly mixing, continuously heating to 150 + 180 ℃, keeping the temperature for 30-50min, and cooling to room temperature to obtain the 3D printing conductive material.
8. The method for preparing the motor coil based on the 3D printed conductive material according to claim 1, wherein the 3D printed insulating material comprises the following raw materials in parts by weight: 80-120 parts of epoxy resin, 15-25 parts of styrene butadiene rubber, 3-5 parts of carbon black N3303, 6-9 parts of methyl tetrahydrophthalic anhydride, 4-6 parts of porcelain powder, 4-8 parts of vinyl triethoxysilane, 9-12 parts of aluminum polyphosphate, 8-14 parts of hydrogen-containing silicone oil, 1-4 parts of an accelerator TMDT, 2-5 parts of zinc oxide, 1-3 parts of stearic acid and 2-6 parts of an anti-aging agent RD.
9. The method for preparing a motor coil based on 3D printed conductive material according to claim 8, wherein the 3D printed insulating material is prepared by the following process: uniformly mixing epoxy resin, carbon black N330, methyl tetrahydrophthalic anhydride, vitrified powder and vinyl triethoxysilane, heating to 120-; then adding styrene butadiene rubber and aluminum polyphosphate into the base material, uniformly mixing, heating to 110-.
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Application publication date: 20201103 |