CN110853868A - 180-degree winding type graphene liquid metal filtering plane choke coil and preparation method thereof - Google Patents
180-degree winding type graphene liquid metal filtering plane choke coil and preparation method thereof Download PDFInfo
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- 238000004804 winding Methods 0.000 title claims abstract description 90
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 67
- 229910001338 liquidmetal Inorganic materials 0.000 title claims abstract description 59
- 238000001914 filtration Methods 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 56
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- 239000003822 epoxy resin Substances 0.000 claims abstract description 13
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 150000001412 amines Chemical class 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical group NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 11
- 239000004841 bisphenol A epoxy resin Substances 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- -1 graphite alkene Chemical class 0.000 claims description 7
- 150000002500 ions Chemical class 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005538 encapsulation Methods 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 2
- 229910001431 copper ion Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
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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
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/042—Graphene or derivatives, e.g. graphene oxides
-
- 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
- C08K9/00—Use of pretreated ingredients
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/022—Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/005—Impregnating or encapsulating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
- H01F41/071—Winding coils of special form
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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Abstract
The invention discloses a 180-degree winding type graphene liquid metal filtering plane choke coil and a preparation method thereof, wherein the 180-degree winding type graphene liquid metal filtering plane choke coil is composed of a choke coil base layer, a filtering medium layer and an encapsulation material layer, the choke coil base layer is made of a copper wire, and the filtering medium layer comprises the following raw materials: functional graphene materials, liquid metal, amine curing agents and epoxy resin; the preparation method comprises the following steps: s1, winding the planar 180-degree winding type choke coil base layer; s2, preparing a filter medium layer raw material; s3, mixing the functional graphene material and the liquid metal in the epoxy resin; s4, mixing an amine curing agent to obtain a filter medium B; and S5, coating the filter medium on the two surfaces of the choke coil base layer, and packaging. The choke coil provided by the invention has the advantages that the current has a polarity trend, the filtering performance is good, the energy loss is low, and the filtering effect reaches-4 to-6 db.
Description
Technical Field
The invention relates to the technical field of filter materials, in particular to a 180-degree winding type graphene liquid metal filter plane choke coil and a preparation method thereof.
Background
The application of graphene has been a worldwide concern, however, research on graphene is also in the beginning. Graphene is a very special two-dimensional novel material, the application of the material is mainly an additive substance of the material, and the current graphene material is graphene without autonomous characteristics and ions. Graphene itself has few functional applications with ions. The development of materials with deeper layers and with functional properties is the direction of technological progress, so that materials with functional properties have to be produced on the raw materials.
The conventional choke filter element is manufactured by winding a coil on a silicon steel sheet to perform self-coupling filtering. However, the magnetic field self-coupling method of the silicon steel sheet only has north-south opposite magnetization self-coupling reaction. The east-west direction can be said to be completely without screen closure, and more or less shows the magnetic flux leakage phenomenon. Based on the defects in the prior art, the invention provides a 180-degree winding type graphene liquid metal filtering planar choke coil and a preparation method thereof.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a 180-degree winding type graphene liquid metal filtering planar choke coil and a preparation method thereof.
The utility model provides a 180 degree formula graphite alkene liquid metal filtering plane choke of bending around, comprises choke basic unit, filter medium layer and encapsulating material layer, the material of choke basic unit is the copper line, the filter medium layer includes the raw materials of following weight percent: 1-10% of functional graphene material, 1-30% of liquid metal, 2-6% of amine curing agent and the balance of epoxy resin.
Preferably, the functional graphene material is a graphene material inlaid with iron, copper and zinc ternary structure ions.
Preferably, the liquid metal is any one or a mixture of water-soluble iron ions, copper ions and silver ions.
Preferably, the amine curing agent is dicyandiamide curing agent.
Preferably, the epoxy resin is a bisphenol a type epoxy resin.
The invention also provides a preparation method of the 180-degree winding type graphene liquid metal filtering plane choke coil, which comprises the following steps:
s1, taking a copper wire, firstly winding according to the shape of an S-shaped curve segment to obtain a first S-shaped curve segment, then symmetrically winding a second S-shaped curve segment by taking the non-initial end of the first S-shaped curve segment as an axis to form a first 180-degree winding type choke coil, and then horizontally winding a plurality of 180-degree winding type choke coils according to the same operation as the winding method of the first 180-degree winding type choke coil to obtain a planar 180-degree winding type choke coil base layer, wherein the vertical height of each 180-degree winding type choke coil is H, and the distance between the initial ends of two adjacent 180-degree winding type choke coils is D;
s2, weighing the raw materials of the filter medium layer according to the following weight percentages: 1-10% of functional graphene material, 1-30% of liquid metal, 2-6% of amine curing agent and the balance of epoxy resin for later use;
s3, adding the functional graphene material and the liquid metal weighed in the step S2 into epoxy resin at a speed of 3g/min, stirring at a rotating speed of 400r/min while adding, adding the mixture into an ultrasonic oscillator after the materials are added, and performing ultrasonic dispersion for 16min to obtain a mixed solution A after the materials are uniformly dispersed;
s4, adding the amine curing agent weighed in the step S2 into the mixed liquid A obtained in the step S2, keeping the rotating speed in the step S3 unchanged, and stirring and mixing for 32min to obtain a filter medium B;
and S5, inversely coating the filtering medium B mixed in the step S4 on two surfaces of the planar 180-degree winding type choke coil base layer, sealing and encapsulating the two surfaces, and heating and curing the two surfaces after the sealing and encapsulating are completed to obtain the 180-degree winding type graphene liquid metal filtering planar choke coil.
Preferably, the vertical height of the 180-degree winding type choke coil is more than 10 times of the thickness of the copper wire, and the distance between the starting ends of two adjacent 180-degree winding type choke coils is more than 5 times of the thickness of the copper wire.
Preferably, the prepared 180-degree winding type graphene liquid metal filter plane choke coil is applied to a filter material, the working frequency of the filter material is 10 KHz-1 GHz, and the working voltage is 3V-110V direct-current voltage.
Compared with the prior art, the invention has the beneficial effects that:
1. the 180-degree bending type graphene liquid metal filtering plane choke coil takes liquid metal as fluid and is packaged in a full azimuth mode, so that the whole choke coil can be packaged seamlessly, the energy loss is reduced by more than 95% compared with the traditional silicon steel sheet filtering in the filtering process, and the made filtering effect can reach-4 to-6 db;
2. the 180-degree winding type graphene liquid metal filtering plane choke coil provided by the invention adopts a 180-degree winding mode, so that the current has a polarity trend, the achieved efficiency is better than that of a general filtering efficiency circuit, and the special self-coupling capability can filter signals and also can make an amplification and improvement effect;
3. the 180-degree bending type graphene liquid metal filtering plane choke coil provided by the invention has the advantages that the filtering medium layer is prepared by combining the functional graphene material, the liquid metal and the epoxy resin, the formula is reasonable, the prepared filtering medium layer has uniform performance and good stability, is suitable for any line application, can exert good effect under the clamping of the epoxy resin graphene and the liquid metal, and is more suitable for direct current and alternating current in various forms.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example one
The invention provides a 180-degree winding type graphene liquid metal filtering plane choke coil which comprises a choke coil base layer, a filtering medium layer and an encapsulating material layer, wherein the choke coil base layer is made of a copper wire, and the filtering medium layer comprises the following raw materials in percentage by weight: 10% of functional graphene material, 15% of liquid metal, 6% of dicyandiamide curing agent and the balance of bisphenol A epoxy resin; the preparation method comprises the following steps:
s1, taking a copper wire, firstly winding according to the shape of an S-shaped curve section to obtain a first S-shaped curve section, then symmetrically winding a second S-shaped curve section by taking the non-initial end of the first S-shaped curve section as an axis to form a first 180-degree winding type choke coil, and then horizontally winding a plurality of 180-degree winding type choke coils according to the same operation as the winding method of the first 180-degree winding type choke coil to obtain a planar 180-degree winding type choke coil base layer, wherein the vertical height of each 180-degree winding type choke coil is H, the distance between the initial ends of two adjacent 180-degree winding type choke coils is D, the vertical height of the 180-degree winding type choke coil is more than 10 times of the thickness of the copper wire, and the distance between the initial ends of two adjacent 180-degree winding type choke coils is more than 5 times of the thickness of the copper wire;
s2, weighing the raw materials of the filter medium layer according to the following weight percentages: 10% of functional graphene material, 15% of liquid metal, 6% of dicyandiamide curing agent and the balance of bisphenol A epoxy resin for later use;
s3, adding the functional graphene material and the liquid metal weighed in the step S2 into bisphenol A epoxy resin at a speed of 3g/min, stirring at a rotating speed of 400r/min while adding, adding the mixture into an ultrasonic oscillator after the materials are added, ultrasonically dispersing for 16min, and uniformly dispersing to obtain a mixed solution A;
s4, adding the dicyandiamide curing agent weighed in the step S2 into the mixed liquid A obtained in the step S2, keeping the rotating speed in the step S3 unchanged, and stirring and mixing for 32min to obtain a filter medium B;
and S5, inversely coating the filtering medium B mixed in the step S4 on two surfaces of the planar 180-degree winding type choke coil base layer, sealing and encapsulating the two surfaces, and heating and curing the two surfaces after the sealing and encapsulating are completed to obtain the 180-degree winding type graphene liquid metal filtering planar choke coil.
According to the invention, the functional graphene material is a graphene material inlaid with iron, copper and zinc ternary structure ions; the liquid metal is water-soluble iron ions.
Example two
The invention provides a 180-degree winding type graphene liquid metal filtering plane choke coil which comprises a choke coil base layer, a filtering medium layer and an encapsulating material layer, wherein the choke coil base layer is made of a copper wire, and the filtering medium layer comprises the following raw materials in percentage by weight: 1% of functional graphene material, 30% of liquid metal, 2% of dicyandiamide curing agent and the balance of bisphenol A epoxy resin; the preparation method comprises the following steps:
s1, taking a copper wire, firstly winding according to the shape of an S-shaped curve section to obtain a first S-shaped curve section, then symmetrically winding a second S-shaped curve section by taking the non-initial end of the first S-shaped curve section as an axis to form a first 180-degree winding type choke coil, and then horizontally winding a plurality of 180-degree winding type choke coils according to the same operation as the winding method of the first 180-degree winding type choke coil to obtain a planar 180-degree winding type choke coil base layer, wherein the vertical height of each 180-degree winding type choke coil is H, the distance between the initial ends of two adjacent 180-degree winding type choke coils is D, the vertical height of the 180-degree winding type choke coil is more than 10 times of the thickness of the copper wire, and the distance between the initial ends of two adjacent 180-degree winding type choke coils is more than 5 times of the thickness of the copper wire;
s2, weighing the raw materials of the filter medium layer according to the following weight percentages: 1% of functional graphene material, 30% of liquid metal, 2% of dicyandiamide curing agent and the balance of bisphenol A epoxy resin for later use;
s3, adding the functional graphene material and the liquid metal weighed in the step S2 into bisphenol A epoxy resin at a speed of 3g/min, stirring at a rotating speed of 400r/min while adding, adding the mixture into an ultrasonic oscillator after the materials are added, ultrasonically dispersing for 16min, and uniformly dispersing to obtain a mixed solution A;
s4, adding the dicyandiamide curing agent weighed in the step S2 into the mixed liquid A obtained in the step S2, keeping the rotating speed in the step S3 unchanged, and stirring and mixing for 32min to obtain a filter medium B;
and S5, inversely coating the filtering medium B mixed in the step S4 on two surfaces of the planar 180-degree winding type choke coil base layer, sealing and encapsulating the two surfaces, and heating and curing the two surfaces after the sealing and encapsulating are completed to obtain the 180-degree winding type graphene liquid metal filtering planar choke coil.
According to the invention, the functional graphene material is a graphene material inlaid with iron, copper and zinc ternary structure ions; the liquid metal is a mixture of water soluble iron and copper ions.
EXAMPLE III
The invention provides a 180-degree winding type graphene liquid metal filtering plane choke coil which comprises a choke coil base layer, a filtering medium layer and an encapsulating material layer, wherein the choke coil base layer is made of a copper wire, and the filtering medium layer comprises the following raw materials in percentage by weight: 5% of a functional graphene material, 1% of liquid metal, 4% of a dicyandiamide curing agent and the balance of bisphenol A epoxy resin; the preparation method comprises the following steps:
s1, taking a copper wire, firstly winding according to the shape of an S-shaped curve section to obtain a first S-shaped curve section, then symmetrically winding a second S-shaped curve section by taking the non-initial end of the first S-shaped curve section as an axis to form a first 180-degree winding type choke coil, and then horizontally winding a plurality of 180-degree winding type choke coils according to the same operation as the winding method of the first 180-degree winding type choke coil to obtain a planar 180-degree winding type choke coil base layer, wherein the vertical height of each 180-degree winding type choke coil is H, the distance between the initial ends of two adjacent 180-degree winding type choke coils is D, the vertical height of the 180-degree winding type choke coil is more than 10 times of the thickness of the copper wire, and the distance between the initial ends of two adjacent 180-degree winding type choke coils is more than 5 times of the thickness of the copper wire;
s2, weighing the raw materials of the filter medium layer according to the following weight percentages: 5% of functional graphene material, 1% of liquid metal, 4% of dicyandiamide curing agent and the balance of bisphenol A epoxy resin for later use;
s3, adding the functional graphene material and the liquid metal weighed in the step S2 into bisphenol A epoxy resin at a speed of 3g/min, stirring at a rotating speed of 400r/min while adding, adding the mixture into an ultrasonic oscillator after the materials are added, ultrasonically dispersing for 16min, and uniformly dispersing to obtain a mixed solution A;
s4, adding the dicyandiamide curing agent weighed in the step S2 into the mixed liquid A obtained in the step S2, keeping the rotating speed in the step S3 unchanged, and stirring and mixing for 32min to obtain a filter medium B;
and S5, inversely coating the filtering medium B mixed in the step S4 on two surfaces of the planar 180-degree winding type choke coil base layer, sealing and encapsulating the two surfaces, and heating and curing the two surfaces after the sealing and encapsulating are completed to obtain the 180-degree winding type graphene liquid metal filtering planar choke coil.
According to the invention, the functional graphene material is a graphene material inlaid with iron, copper and zinc ternary structure ions; the liquid metal is a mixture of water-soluble iron, copper and silver ions.
In the first, second and third embodiments, the prepared 180-degree winding type graphene liquid metal filter planar choke coil is applied to a filter material, the working frequency of the filter material is 10KHz to 1GHz, and the working voltage is 3V to 110V of direct current voltage.
The 180-degree wrap-around graphene liquid metal planar choke coil prepared in the first embodiment, the second embodiment and the third embodiment is subjected to a filtering effect test, and the results are shown in table 1.
Table 1:
| example one | Example two | EXAMPLE III | |
| Filtering effect | -4dB | -5dB | -6dB |
Energy losses of the 180-degree bending type graphene liquid metal filtering plane choking coils prepared in the first embodiment, the second embodiment and the third embodiment and the traditional silicon steel sheet filtering are calculated, energy losses of the 180-degree bending type graphene liquid metal filtering plane choking coils prepared in the first embodiment, the second embodiment and the third embodiment are measured by taking an energy loss result of the traditional silicon steel sheet filtering as a standard, and the results are shown in table 2.
Table 2:
| example one | Example two | EXAMPLE III | |
| Loss of energy | -96.2 | -95.5 | -95.2 |
In table 2, "-" indicates a percentage value of a reduction in energy loss compared to the conventional silicon steel sheet filtering.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a 180 degree formula graphite alkene liquid metal filtering plane choke of bending, its characterized in that comprises choke basic unit, filter medium layer and encapsulating material layer, the material of choke basic unit is the copper line, the filter medium layer includes following weight percent's raw materials: 1-10% of functional graphene material, 1-30% of liquid metal, 2-6% of amine curing agent and the balance of epoxy resin.
2. The 180-degree wrap-around graphene liquid metal filter planar choke coil of claim 1, wherein the functional graphene material is a graphene material embedded with iron, copper and zinc ternary structure ions.
3. The 180-degree wrap-around graphene liquid metal filter planar choke coil according to claim 1, wherein the liquid metal is any one or a mixture of water-soluble iron, copper and silver ions.
4. The graphene liquid metal filter planar choke with the angle of 180 degrees around according to claim 1, wherein the amine curing agent is dicyandiamide curing agent.
5. The graphene liquid metal filter planar choke with the angle of 180 degrees around according to claim 1, wherein the epoxy resin is bisphenol a epoxy resin.
6. A preparation method of a 180-degree winding type graphene liquid metal filtering plane choke coil is characterized by comprising the following steps:
s1, taking a copper wire, firstly winding according to the shape of an S-shaped curve segment to obtain a first S-shaped curve segment, then symmetrically winding a second S-shaped curve segment by taking the non-initial end of the first S-shaped curve segment as an axis to form a first 180-degree winding type choke coil, and then horizontally winding a plurality of 180-degree winding type choke coils according to the same operation as the winding method of the first 180-degree winding type choke coil to obtain a planar 180-degree winding type choke coil base layer, wherein the vertical height of each 180-degree winding type choke coil is H, and the distance between the initial ends of two adjacent 180-degree winding type choke coils is D;
s2, weighing the raw materials of the filter medium layer according to the following weight percentages: 1-10% of functional graphene material, 1-30% of liquid metal, 2-6% of amine curing agent and the balance of epoxy resin for later use;
s3, adding the functional graphene material and the liquid metal weighed in the step S2 into epoxy resin at a speed of 3g/min, stirring at a rotating speed of 400r/min while adding, adding the mixture into an ultrasonic oscillator after the materials are added, and performing ultrasonic dispersion for 16min to obtain a mixed solution A after the materials are uniformly dispersed;
s4, adding the amine curing agent weighed in the step S2 into the mixed liquid A obtained in the step S2, keeping the rotating speed in the step S3 unchanged, and stirring and mixing for 32min to obtain a filter medium B;
and S5, inversely coating the filtering medium B mixed in the step S4 on two surfaces of the planar 180-degree winding type choke coil base layer, sealing and encapsulating the two surfaces, and heating and curing the two surfaces after the sealing and encapsulating are completed to obtain the 180-degree winding type graphene liquid metal filtering planar choke coil.
7. The method for preparing a 180-degree winding type graphene liquid metal filtering planar choke coil according to claim 6, wherein the vertical height of the 180-degree winding type choke coil is more than 10 times of the thickness of a copper wire, and the distance between the starting ends of two adjacent 180-degree winding type choke coils is more than 5 times of the thickness of the copper wire.
8. The method for preparing the 180-degree bending type graphene liquid metal filtering planar choke coil according to claim 6, wherein the prepared 180-degree bending type graphene liquid metal filtering planar choke coil is applied to a filtering material, the working frequency of the filtering material is 10 KHz-1 GHz, and the working voltage is 3V-110V direct-current voltage.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107266861A (en) * | 2017-07-19 | 2017-10-20 | 冯苇荣 | Epoxy resin functional graphene integration filtering IC and preparation method thereof |
| CN107871594A (en) * | 2017-05-31 | 2018-04-03 | 洪豪立 | " Taiji " type graphene smoothing choke and preparation method thereof |
| CN108565100A (en) * | 2017-05-31 | 2018-09-21 | 洪豪立 | Circulating type graphene smoothing choke and preparation method thereof |
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- 2019-09-29 CN CN201910929972.1A patent/CN110853868A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107871594A (en) * | 2017-05-31 | 2018-04-03 | 洪豪立 | " Taiji " type graphene smoothing choke and preparation method thereof |
| CN108565100A (en) * | 2017-05-31 | 2018-09-21 | 洪豪立 | Circulating type graphene smoothing choke and preparation method thereof |
| CN107266861A (en) * | 2017-07-19 | 2017-10-20 | 冯苇荣 | Epoxy resin functional graphene integration filtering IC and preparation method thereof |
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Application publication date: 20200228 |