CN104393166A - Room-temperature one-step-method mold-free method for preparing bonding cylindrical layered magnetoelectric composite material - Google Patents
Room-temperature one-step-method mold-free method for preparing bonding cylindrical layered magnetoelectric composite material Download PDFInfo
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- CN104393166A CN104393166A CN201410525711.0A CN201410525711A CN104393166A CN 104393166 A CN104393166 A CN 104393166A CN 201410525711 A CN201410525711 A CN 201410525711A CN 104393166 A CN104393166 A CN 104393166A
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Abstract
The invention discloses a room-temperature one-step-method mold-free method for preparing a bonding cylindrical layered magnetoelectric composite material, and belongs to the technical field of a magnetoelectric composite material. The preparation process comprises the following steps: sintering piezoelectric ceramics with a piezoelectric effect to be cylindrical, cutting according to needed dimension, and performing pre-bonding processing such as polishing, electrode coating, polarizing and the like; uniformly mixing a prepared magnetic material with a magnetic-induced shrinkage or elongation property with an epoxy resin in proportions, the mass fraction of the epoxy resin being 7 to 15%; and directly filling a cylindrical piezoelectric material mold up with a mixed mixture (TDE), at a room temperature, applying pressure of 3 to 5Mpa axially along a cylinder, and performing solidification for 24 to 48 hours so as to obtain the bonding cylindrical layered magnetoelectric composite material. According to the invention, the piezoelectric ceramic material is taken as a mold, additional preparation of a mold and a demolding process are unnecessary, at the room temperature, the bonding cylindrical layered magnetoelectric composite material is obtained through one step, and the preparation process also has the advantages of simple process, high rapidness, low cost, high practicality, high application and popularization values and the like.
Description
Technical field
The invention belongs to functional material preparing technical field, in particular, provide a kind of One-step Reaction At Room Temperature prepares bonding magnetic electric compound material technique without mold technique, be applicable to prepare high performance piezoelectric ceramic base magnetic electric compound material.
Background technology
Along with high speed development and the Cross slot interference interdisciplinary of science and technology, single performance material is difficult to the overall target meeting various high request, and the multiple performance materials composite material with property that is composited becomes study hotspot.Magnetic electric compound material is by ferroelectric phase and be ferromagneticly composited through certain method, and this material has the product effect-magnetoelectric effect of ferroelectric phase and ferromagnetic phase.Because magnetic electric compound material possesses the special performance of piezoelectricity, piezomagnetism and magnetoelectricity simultaneously; it has extensive and important purposes in the field such as current measurement, broadband magnetic detection, magnetic sensors of transducer, detection of magnetic field, conductor magneto-electric energy conversion, intelligent filter, magnetic recording microwave regime, ultra-high-tension power transmission line; especially in microwave device, high-tension electricity conveying system, there are many outstanding advantages and very tempting application prospect in the accurate measurement aspect of electromagnetic exposure, has become a kind of very important functional composite material (Nature 2006; 442:759-65).
High-performance and easily preparation are the main targets of magnetic electric compound material, and in order to reach this two targets, people choose high performance component, suitable ingredients and structure, suitable preparation method obtains magnetic electric compound material.Terbium dysprosium ferrum (Terfenol-D)/lead zirconate titanate (PZT) magnetic electric compound material is widely studied as the high-performance magnetism composite of a new generation.Terfenol-D/PZT layered electromagnetic composite material adopts Terfenol-D reguline metal or bonding Terfenol-D material to be obtained by gluing or hot pressing mode usually.The preparation method that the layered electromagnetic material of the bonding Terfenol-D/PZT of current preparation is general is as follows: design first as required and prepare mould; Magnetostrictive material powder is mixed with bonding agent; Mixture and piezoelectric are placed in mould, after cured the demoulding; The Terfenol-D magnet prepared to be sticked with glue or hot-press method and piezoelectric are combined into layered electromagnetic composite material.This preparation method is comparatively complicated, adds manufacture difficulty and cycle, undesirably increases manufacturing cost simultaneously.Due to process technology limit, it can only obtain dull and stereotyped stratiform magnetic electric compound material.It is binding agent with high-molecular organic material that patent CN1395325A discloses a kind of, piezoelectric ceramic and the hot-forming at low temperatures method of magnetostrictive material (as Tb-Dy-Fe alloy), the method almost can shaping arbitrary shape magnetic electric compound material, but need to prepare mould, hot pressing and the demoulding, make technology chain elongated.Patent CN100502076C discloses a kind of electro-plating method that adopts and has prepared cylinder (ring) layered electromagnetic composite material, and because cylinder has from constraint feature, it has the magnetic electricity performance more superior than slab construction.Therefore, bonding stratiform magnetic electric compound material needs to improve magnetic electricity performance, needs the bonding stratiform magnetic electric compound material prepared as cylindrical structure.
Summary of the invention
There is the shortcoming that operation is long, cost is high, cannot prepare bonding cylinder layered electromagnetic composite material in the method for existing preparation bonding stratiform magnetic electric compound material, the present invention proposes the technique of a kind of One-step Reaction At Room Temperature without molded standby bonding cylinder layered electromagnetic composite material.
This technique is using piezoelectric ceramic body as mould, the mixture of magnetostrictive powder and bonding agent to be filled directly in piezoelectric ceramic and to pressurize and solidify, one step forming obtains magnetic electric compound material, and this preparation technology is particularly useful for making the bonding stratiform magnetic electric compound material of labyrinth as cylinder (ring-type) magnetic electric compound material.
A kind of One-step Reaction At Room Temperature of the present invention, without the method for molded standby bonding cylinder layered electromagnetic composite material, comprises following preparation process:
(1) sinter the piezoelectric ceramic with piezoelectric effect into cylindrical shape, be cut into required size, and carry out polishing, being coated with the bonding pre-treatment such as plated electrode, polarization;
(2) have magnetostriction magnetic material powder and epoxy resin Homogeneous phase mixing in proportion by what prepare, the mass fraction of epoxy resin is 7 ~ 15%;
(3) mixture (TDE) of step (2) is directly filled in cylinder piezoelectric mould, at room temperature, solidifies within 24 ~ 48 hours, namely obtain bonding cylinder layered electromagnetic composite material along Cylindorical rod to applying 3 ~ 5Mpa pressure;
(4) the bonding cylinder layered electromagnetic composite material obtained is carried out magnetic electricity performance test under magnetoelectric measurement system.
The invention has the advantages that, using piezoceramic material as mould, without the need to making mould and stripping process in addition, next step shaping of room temperature can obtain bonding cylinder layered electromagnetic composite material, solves that traditional Terfenol-D metal block material eddy current loss is large, preparation section is long, difficulty prepares the problems such as cylinder stratiform.This bonding cylinder layered electromagnetic composite material has more superior magnetic electricity performance relative to bonding dull and stereotyped stratiform magnetic electric compound material.This preparation technology have technique simple, fast, low, practical, the application and popularization value advantages of higher of cost.
Accompanying drawing explanation
Fig. 1 represents bonding cylinder layered electromagnetic composite material magnetic electricity performance.
Embodiment
Embodiment 1
By piezoelectric ceramic PZT-5H(Pb(Zr
0.52ti
0.48) O
3) sinter cylindrical shape into, and to cut into external diameter be 15mm, internal diameter is 11mm, is highly the cylindrical shape of 5mm, to its polishing and at inside and outside both sides coating Ni electrode, along cylinder radial polarised; The Terfenol-D powder prepared is mixed with epoxy resin, the mass fraction of epoxy resin is 7%, blend mixture (TDE) is directly filled in cylinder piezoelectric mould, at room temperature, along Cylindorical rod to applying 3Mpa pressure and solidify within 24 hours, namely to obtain bonding cylinder layered electromagnetic composite material; The bonding cylinder layered electromagnetic composite material obtained is carried out magnetic electricity performance test, axial magnetoelectricity conversion coefficient under magnetoelectric measurement system
α e,Abe 3.4 V/cmOe.
Embodiment 2
By piezoelectric ceramic PZT-5H(Pb(Zr
0.52ti
0.48) O
3) sinter cylindrical shape into, and to cut into external diameter be 13mm, internal diameter is 11mm, is highly the cylindrical shape of 3mm, to its polishing and at inside and outside both sides coating Ni electrode, along cylinder radial polarised.The Terfenol-D powder prepared is mixed with epoxy resin, the mass fraction of epoxy resin is 15%, blend mixture (TDE) is directly filled in cylinder piezoelectric mould, at room temperature, along Cylindorical rod to applying 3Mpa pressure and solidify within 24 hours, namely to obtain bonding cylinder layered electromagnetic composite material; The bonding cylinder layered electromagnetic composite material obtained is carried out magnetic electricity performance test, axial magnetoelectricity conversion coefficient under magnetoelectric measurement system
α e,Abe 2.3 V/cmOe.
Embodiment 3
By piezoelectric ceramic PZT-5H(Pb(Zr
0.52ti
0.48) O
3) sinter cylindrical shape into, and to cut into external diameter be 10mm, and internal diameter is 9mm, is highly the cylindrical shape of 2mm, (the same) to its polishing and at inside and outside both sides coating Ni electrode, along cylinder radial polarised.The Terfenol-D powder prepared is mixed with epoxy resin, the mass fraction of epoxy resin is 8%, blend mixture (TDE) is directly filled in cylinder piezoelectric mould, at room temperature, along Cylindorical rod to applying 4Mpa pressure and solidify within 36 hours, namely to obtain bonding cylinder layered electromagnetic composite material; The bonding cylinder layered electromagnetic composite material obtained is carried out magnetic electricity performance test, axial magnetoelectricity conversion coefficient under magnetoelectric measurement system
α e,Abe 3.9 V/cmOe.
Embodiment 4
By piezoelectric ceramic BT(BaTiO
3) sinter cylindrical shape into, and to cut into external diameter be 15mm, internal diameter is 12mm, is highly 6mm, and wall thickness is the cylindrical shape of 1mm, to its polishing and at inside and outside both sides coating Ni electrode, along cylinder radial polarised.The Terfenol-D magnetostrictive material prepared are mixed with epoxy resin, the mass fraction of epoxy resin is 10%, blend mixture (TDE) is directly filled in cylinder piezoelectric mould, at room temperature, along Cylindorical rod to applying 3Mpa pressure and solidify within 48 hours, namely to obtain bonding cylinder layered electromagnetic composite material; The bonding cylinder layered electromagnetic composite material obtained is carried out magnetic electricity performance test, axial magnetoelectricity conversion coefficient under magnetoelectric measurement system
α e,Abe 1.6 V/cmOe.
Embodiment 5
By piezoelectric ceramic BT(BaTiO
3) sinter cylindrical shape into, and to cut into external diameter be 13mm, internal diameter is 9mm, is highly the cylindrical shape of 3mm, to its polishing and at inside and outside both sides coating Ni electrode, along cylinder radial polarised.The Terfenol-D magnetostrictive material prepared are mixed with epoxy resin, the mass fraction of epoxy resin is 9%, blend mixture (TDE) is directly filled in cylinder piezoelectric mould, at room temperature, along Cylindorical rod to applying 4Mpa pressure and solidify within 30 hours, namely to obtain bonding cylinder layered electromagnetic composite material; The bonding cylinder layered electromagnetic composite material obtained is carried out magnetic electricity performance test, axial magnetoelectricity conversion coefficient under magnetoelectric measurement system
α e,Afor 1.2V/cmOe.
Embodiment 6
Sinter piezoelectric ceramic PZT into cylindrical shape, and to cut into external diameter be 15mm, internal diameter is 10mm, is highly the cylindrical shape of 6mm, to its polishing and at inside and outside both sides coating Ni electrode, along cylinder radial polarised.The Terfenol-D magnetostrictive material prepared are mixed with epoxy resin, the mass fraction of epoxy resin is 12%, blend mixture (TDE) is directly filled in cylinder piezoelectric mould, at room temperature, along Cylindorical rod to applying 5Mpa pressure and solidify within 32 hours, namely to obtain bonding cylinder layered electromagnetic composite material; The bonding cylinder layered electromagnetic composite material obtained is carried out magnetic electricity performance test, axial magnetoelectricity conversion coefficient under magnetoelectric measurement system
α e,Abe 4.1 V/cmOe.
Claims (3)
1. One-step Reaction At Room Temperature is without a method for molded standby bonding cylinder layered electromagnetic composite material, it is characterized in that: concrete steps are as follows:
(1) sinter the piezoelectric ceramic with piezoelectric effect into cylindrical shape, be cut into required size, and carry out polishing, being coated with the bonding pre-treatment such as plated electrode, polarization;
(2) by what prepare, there is magnetostriction magnetic material powder and epoxy resin Homogeneous phase mixing in proportion;
(3) mixture described in step (2) is directly filled in cylinder piezoelectric mould, at room temperature, also solidifies along Cylindorical rod to applying certain pressure and namely obtain bonding cylinder layered electromagnetic composite material;
(4) the bonding cylinder layered electromagnetic composite material obtained is carried out magnetic electricity performance test in magnetoelectric measurement system.
2. a kind of One-step Reaction At Room Temperature, without the method for molded standby bonding cylinder layered electromagnetic composite material, is characterized in that: the mass fraction of the mixture epoxy resin described in step (2) is 7 ~ 15% according to claim 1.
3. a kind of One-step Reaction At Room Temperature is without the method for molded standby bonding cylinder layered electromagnetic composite material according to claim 1, and it is characterized in that: step (3) pressure is 3 ~ 5Mpa, curing time is 24 ~ 48 hours.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109279890A (en) * | 2018-09-21 | 2019-01-29 | 歌尔股份有限公司 | The preparation method of magnetic electric compound material |
Citations (5)
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|---|---|---|---|---|
| US6004500A (en) * | 1996-03-25 | 1999-12-21 | Rutgers, The State University Of New Jersey | Methods for producing novel ceramic composites |
| CN101045808A (en) * | 2007-04-28 | 2007-10-03 | 武汉理工大学 | Preparation method of piezoelectric ceramic/epoxy resin composite |
| CN101118949A (en) * | 2007-07-05 | 2008-02-06 | 北京科技大学 | Circular cylinder-shaped composite material with giant magnetoelectric effect and method for making same |
| CN101220437A (en) * | 2008-01-26 | 2008-07-16 | 桂林电子科技大学 | High-performance ring shaped agglutinate rare earth ultra-magnetostriction material, manufacturing method and device thereof |
| CN103762306A (en) * | 2014-02-21 | 2014-04-30 | 中南大学 | Magnetoelectric composite material and preparation method thereof |
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2014
- 2014-10-08 CN CN201410525711.0A patent/CN104393166B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6004500A (en) * | 1996-03-25 | 1999-12-21 | Rutgers, The State University Of New Jersey | Methods for producing novel ceramic composites |
| CN101045808A (en) * | 2007-04-28 | 2007-10-03 | 武汉理工大学 | Preparation method of piezoelectric ceramic/epoxy resin composite |
| CN101118949A (en) * | 2007-07-05 | 2008-02-06 | 北京科技大学 | Circular cylinder-shaped composite material with giant magnetoelectric effect and method for making same |
| CN101220437A (en) * | 2008-01-26 | 2008-07-16 | 桂林电子科技大学 | High-performance ring shaped agglutinate rare earth ultra-magnetostriction material, manufacturing method and device thereof |
| CN103762306A (en) * | 2014-02-21 | 2014-04-30 | 中南大学 | Magnetoelectric composite material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109279890A (en) * | 2018-09-21 | 2019-01-29 | 歌尔股份有限公司 | The preparation method of magnetic electric compound material |
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