阅读说明：本技术 一种角式石墨烯液态金属滤波平面扼流圈及其制备方法 (Angle type graphene liquid metal filtering plane choke coil and preparation method thereof ) 是由 冯苇荣 梁思敬 司徒若祺 余朗生 周文 于 2019-09-29 设计创作，主要内容包括：本发明公开了一种角式石墨烯液态金属滤波平面扼流圈及其制备方法,所述角式石墨烯液态金属滤波平面扼流圈由扼流圈基层、滤波介质层和封装材料层组成,所述扼流圈基层的材质为铜线,所述滤波介质层包括以下原料：功能性石墨烯材料、液态金属、胺类固化剂和环氧树脂；其制备方法包括以下步骤：S1、平面的角式扼流圈基层的绕制；S2、滤波介质层原料的准备；S3、功能性石墨烯材料、液态金属在环氧树脂中的混合,得混合液A；S4、向混合物A中混入胺类固化剂,得滤波介质B；S5、将滤波介质涂抹在平面扼流圈的两面,再封装即得。本发明提出的扼流圈,电流带有极性走向,滤波性能好,能量损失低,滤波效果达到-4～6db。(The invention discloses an angle type graphene liquid metal filtering plane choke coil and a preparation method thereof, wherein the angle 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 angle 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 to obtain a mixed solution A; s4, mixing an amine curing agent into the mixture A to obtain a filter medium B; and S5, coating the filter medium on two surfaces of the planar choke coil, 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-4-6 db.)

1. The utility model provides a liquid metal filtering plane choke of angle formula graphite alkene which 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 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 epoxy resin.

2. The angled graphene liquid metal filter planar choke of claim 1, wherein the functional graphene material is a graphene material lined with iron, copper, and zinc ternary structure ions.

3. The angular 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 angled graphene liquid metal filter planar choke of claim 1, wherein the amine curing agent is dicyandiamide curing agent.

5. The angular graphene liquid metal filter planar choke of claim 1, wherein the epoxy resin is bisphenol a epoxy resin.

6. A preparation method of an angle type graphene liquid metal filtering plane choke coil is characterized by comprising the following steps:

s1, taking a copper wire, winding a first straight line segment at a certain angle, symmetrically winding a second straight line segment by taking the non-initial end of the straight line segment as an axis to form a first angle shape, and horizontally winding a plurality of angle shapes according to the same operation as the winding method of the first angle shape to obtain a planar angle type choke coil base layer, wherein the vertical height of each angle shape is H, and the vertical distance between two adjacent angle shapes 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 sides of the planar choke coil, sealing and encapsulating the planar choke coil, and heating and curing to obtain the angle type graphene liquid metal filtering planar choke coil.

7. The method for preparing an angular graphene liquid metal filtering planar choke coil according to claim 6, wherein the vertical distance between two adjacent angular forms and the vertical height of the angular forms are both more than 3 times the thickness of the copper wire.

8. The method for preparing an angular graphene liquid metal filter planar choke coil according to claim 6, wherein the prepared angular graphene liquid metal filter planar choke coil is applied to a filter material, the operating frequency of the filter material is 100 Hz-5 GHz, and the operating voltage is 3V-110V direct current voltage.

Technical Field

The invention relates to the technical field of filter materials, in particular to an angle 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 an angular 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 an angular graphene liquid metal filtering planar choke coil and a preparation method thereof.

The utility model provides a liquid metal filtering plane choke of angle formula graphite alkene, comprises choke basic unit, filter medium layer and packaging 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 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 angle type graphene liquid metal filtering plane choke coil, which comprises the following steps:

s1, taking a copper wire, winding a first straight line segment at a certain angle, symmetrically winding a second straight line segment by taking the non-initial end of the straight line segment as an axis to form a first angle shape, and horizontally winding a plurality of angle shapes according to the same operation as the winding method of the first angle shape to obtain a planar angle type choke coil base layer, wherein the vertical height of each angle shape is H, and the vertical distance between two adjacent angle shapes 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 sides of the planar choke coil, sealing and encapsulating the planar choke coil, and heating and curing to obtain the angle type graphene liquid metal filtering planar choke coil.

Preferably, the vertical distance between two adjacent angle shapes and the vertical height of the angle shape are both more than 3 times of the thickness of the copper wire.

Preferably, the prepared angle type graphene liquid metal filtering plane choke coil is applied to a filtering material, the working frequency of the filtering material is 100 Hz-5 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 angle type graphene liquid metal filtering planar choke coil provided by the invention takes liquid metal as fluid and is packaged in an all-azimuth manner, so that the whole choke coil can be packaged seamlessly, and in the filtering process, the energy loss is reduced by more than 95% compared with the traditional silicon steel sheet filtering, and the prepared filtering effect can reach-4-6 db;

2. the angle type graphene liquid metal filtering plane choke coil provided by the invention adopts an angle type 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 can also make an amplification and improvement effect;

3. the angle type graphene liquid metal filtering plane choke coil provided by the invention has the advantages that the functional graphene material, the liquid metal and the epoxy resin are combined to prepare the filtering medium layer, the formula is reasonable, the prepared filtering medium layer has uniform performance and good stability, and is suitable for any circuit application.

Detailed Description

The present invention will be further illustrated with reference to the following specific examples.