CN1781872A - Composite material with capacitance and inductance performance and its preparing method - Google Patents
Composite material with capacitance and inductance performance and its preparing method Download PDFInfo
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- CN1781872A CN1781872A CN 200510116702 CN200510116702A CN1781872A CN 1781872 A CN1781872 A CN 1781872A CN 200510116702 CN200510116702 CN 200510116702 CN 200510116702 A CN200510116702 A CN 200510116702A CN 1781872 A CN1781872 A CN 1781872A
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Abstract
The present invention relates to a kind of composite material with capacitance and inductance performance, and belongs to the field of electronic composite material technology. The composite material is ternary composite material Ni0.3Zn0.7Fe1.95O4-Ni-PVDF and ternary composite material Ba3Co2Fe23O41-Ni-PVDF. It is prepared through mixing ferrite, metal nickel grain and polyvinylidene fluoride, and molding the mixture at temperature of 180-220 deg C and pressure of 10-15 MPa for 20 min. The Ni0.3Zn0.7Fe1.95O4-Ni-PVDF system has initial magnetic permeability of about 30 in the pressure below 10 MHz and dielectric constant at 1 KHz below up to about 200; and the Ba3Co2Fe23O41-Ni-PVDF system has initial magnetic permeability of about 4.0 in the pressure below 500 MHz and dielectric constant at 10 MHz below up to about 130. The composite material possesses unique double seepage structure, and has low preparation temperature, simple preparation process and excellent industrial application foreground.
Description
Technical field
The invention belongs to the electron recombination technical field of material, particularly have high-k and high initial permeability simultaneously and have both electric capacity-inductance both sexes, preparation temperature is low, technology is easy integrated matrix material of a kind of novel capacitor/inductance and preparation method thereof.
Background technology
At present, in microelectronics industry, passive devices such as the electric capacity above 98%, inductance adopt discrete component, and they have taken the wiring board space more than 70%.Discrete component becomes the major obstacle that microelectronic system further dwindles now.For overcoming this obstacle, require passive device to realize that multifunction is integrated, and adopt embedded components and parts simultaneously to realize overall package.Be that integrated chip LC element occurs with sheet capacitor and chip inductor at present.The form that general integrated LC element adopts multi-layer high-temperature to burn sheet capacitor (MLCC) and chip inductor (MLCI) altogether.Because the lamination of two class materials burns altogether and will cause a series of technology matching problem, therefore just press for real integratedly, promptly inductance and two kinds of performances of electric capacity are integrated in the element, this just needs a kind of material can possess inductance and electric capacity two specific characters simultaneously.Existing appearance sense Amphoteric Materials mainly is ferroelectric/ferromagnetic ceramic composite system, though can realize holding sense both sexes coexistence, stupalith need at high temperature carry out sintering thermal treatment, and its complex process, power consumption are big, easy to crack.And because the wiring board that embedded device adopted mostly is polymer materials, ceramic component just more is difficult to be used in overall package.The appearance sense both sexes matrix material that with the polymkeric substance is matrix can overcome the ceramic composite above shortcomings, can obtain to use to specific inductivity and the less demanding occasion of initial permeability.
In recent years, the research of holding the sense Amphoteric Materials was mainly concentrated on the ceramic systems aspect.For example, people such as Qi Xiwei is with NiCuZn ferrite and BaTiO
3Carry out high temperature co-firing in 1250 ℃, at NiCuZn and BaTiO
3When molar content was identical, the matrix material specific inductivity was about 300, initial permeability only is about 20.Polymer matrix composite with high-k or high initial permeability still is used as two class materials and studies respectively.Recently, the people such as Zhang Qiming of U.S. University of Pennsylvania are with Pb (Mg
1/3Nb
2/3) O
3-PbTiO
3(PMN-PT) ceramic powder adds to by solution method in the multipolymer [P (VDF-TrFE)] of polyvinylidene difluoride (PVDF)-trifluoro-ethylene, is that the specific inductivity of 50% o'clock matrix material is about 200 in the volume fraction of pottery.It is compound that people such as Dang Zhimin adopt carbon fiber, metal Ni particle etc. and polyvinylidene difluoride (PVDF) (PVDF) matrix to carry out, and utilizes the seep effect of conductive particle in insulating body to improve the specific inductivity of matrix material significantly, shown good prospects for application.Si Lama people such as (Slama) is compound with MnZn ferrite and Resins, epoxy (epoxy), utilize the ferritic high initial permeability of MnZn to improve the initial permeability of matrix material, reach at 50% o'clock at MnZn ferrite volumn concentration, the matrix material initial permeability reaches about 15.Above statement of facts, (1) be though ferroelectric/ferromagnetic ceramic compound system can be realized capacitive and perception coexistence, but ceramic process needs high temperature co-firing, energy consumption big, easy to crack; (2) polymer matrix composite that has high-k or high initial permeability has respectively all obtained research to a certain degree, but the polymer matrix composite that has both high-k and high initial permeability is not simultaneously obtained research yet.
Summary of the invention
The purpose of this invention is to provide a kind of novel capacitor that has high-k and high initial permeability simultaneously--inductance integrated electronic matrix material and preparation method thereof.By the trielement composite material of ferrite phase, metallographic phase and organic polymer component is studied, developed a kind of polymer-based carbon trielement composite material of novel pair of seepage flow structure.In this structure, the ferrite particle with greater particle size not only give material with higher initial permeability simultaneously these macrobeads also occupied the intravital big quantity space of polymer-based carbon at the intravital seepage flow of polymer-based carbon.The less conductive nickel particle of particle diameter is distributed in the ferrite particle gap according to qualifications, and the secondary seepage flow of nickel particle in the ferrite particle gap has improved the specific inductivity of matrix material, and its magnetic has also been made contribution to the raising of matrix material initial permeability simultaneously.This pair of seepage flow structure decrease the consumption of seepage flow conductive particle when taking place, help to improve the material snappiness and reduce dielectric loss.Experimental results show that this trielement composite material with two seepage flow structures has higher dielectric constant and initial permeability simultaneously concurrently, is a kind of material of being applied aspect the multi-functional integrated embedded passive device of being hopeful.
A kind of matrix material that has both the capacitor and inductor performance that the present invention proposes, it is characterized in that: described matrix material comprises inorganic materials ferrite, conducting metal nickel powder (Ni), and polymer materials, its volume recipe ratio is: nickel 0.1～11%, ferrite 50～60%, polyvinylidene difluoride (PVDF) 30～40%.
In above-mentioned matrix material, described ferrite is nickel-zinc ferrite Ni
0.3Zn
0.7Fe
1.95O
4, or Z type plane hexad ferrite Ba
3Co
2Fe
23O
41
In above-mentioned matrix material, described polymer materials is polyvinylidene difluoride (PVDF) PVDF.
In above-mentioned matrix material, the ferritic granularity of described inorganic materials is: nickel 2～3 μ m, ferrite 75～100 μ m.
A kind of preparation method who has both the matrix material of capacitor and inductor performance that the present invention proposes is characterized in that: described composite material by adopting heat pressing process preparation, and concrete technical process is:
(1) batching: take by weighing nickel powder 0.005～0.739g by above-mentioned prescription, the nickel-zinc ferrite powder 2.4g of 75～100 μ m or Z type plane hexad ferrite 1.65g, polyvinylidene difluoride (PVDF) 0.311～0.539g;
(2) join sample: nickel powder, polyvinylidene difluoride (PVDF) and ferrite powder are stirred according to aforementioned proportion, mix;
(3) moulding: the powder that step 2 is mixed is placed on the powder compressing machine, is 180～220 ℃ in temperature, and pressure is under the condition of 10～15MPa, hot pressing moulding in 20 minutes.
The invention has the beneficial effects as follows: by adopting a kind of novel pair of seepage flow structure, in polymer matrix composite, realized having concurrently simultaneously high dielectric constant and than the purpose of high initial permeability, the matrix material specific inductivity reaches more than 200, and initial permeability reaches 30; Adopt simple heat pressing process to carry out forming materials, reduced mold temperature, shortened preparation time, obtained well behaved appearance sense both sexes matrix material at short notice.
Description of drawings
Fig. 1 is a sample section microphotograph of the present invention (embodiment 1).
Fig. 2 is that nickel particle volume percentage composition of the present invention is to the experimental value of sample initial permeability influence and the comparison diagram (embodiment 1) of calculated value.
Fig. 3 is initial permeability of the present invention and the quality factor rule (embodiment 1) with frequency change.
Fig. 4 is specific conductivity of the present invention and the specific inductivity Changing Pattern (embodiment 1) with nickel particle volume percentage composition.
Fig. 5 is a sample section microphotograph of the present invention (embodiment 2).
Fig. 6 is that nickel particle volume percentage composition of the present invention is to the experimental value of sample initial permeability influence and the comparison diagram (embodiment 2) of calculated value.
Fig. 7 is initial permeability of the present invention and the quality factor rule (embodiment 2) with frequency change.
Fig. 8 is specific conductivity of the present invention and the specific inductivity Changing Pattern (embodiment 2) with nickel particle volume percentage composition.
Embodiment
Below in conjunction with embodiment technical scheme of the present invention is described further:
The present invention is with Ni
0.3Zn
0.7Fe
1.95O
4-Ni-PVDF and Ba
3Co
2Fe
23O
41The trielement composite material of two kinds of systems of-Ni-PVDF is as experimental subjects.After according to prescription three kinds of powders being mixed earlier, hot-forming under low temperature.The process flow of constructing in fact is as follows:
(1) batching: take by weighing nickel powder 0.005～0.739g of 2～3 μ m, the nickel-zinc ferrite powder 2.4g of 75～100 μ m or Z type plane hexad ferrite 1.65g, polyvinylidene difluoride (PVDF) 0.311～0.539g by above-mentioned prescription.
(2) join sample: nickel powder, polyvinylidene difluoride (PVDF) and ferrite powder are stirred according to aforementioned proportion, mix.
(3) moulding: the powder that mixes is placed on the powder compressing machine, is 180～220 ℃ in temperature, and pressure is under the condition of 10～15MPa, hot pressing moulding in 20 minutes.
Take by weighing an amount of nickel powder, polyvinylidene difluoride (PVDF) and 2.4g nickel-zinc ferrite powder according to listed prescription in the table one and mix and be placed in the mould, in 200 ℃, hot pressing moulding in 15 minutes can obtain a series of samples under the 15MPa.Two seepage flow structures can be verified from the sample microstructure photograph, as shown in Figure 1.The sample initial permeability adopts Maxwell-Garnett formula and Bruggeman-Hanai formula Simulation result also to be shown among Fig. 2 in contrast with the variation tendency of nickel particle volume percentage composition as shown in Figure 2.Initial permeability and quality factor are with the rule of frequency change as shown in Figure 3.Sample specific conductivity and specific inductivity are with the Changing Pattern of nickel particle volume percentage composition as shown in Figure 4.
Table one embodiment 1 component prescription
| Numbering | PVDF | Ni | ||
| vol％ | g | vol％ | g | |
| A0 A1 A2 A3 A4 A5 A6 A7 | 39.9 39 37 35 33 31 30 29 | 0.539 0.527 0.500 0.473 0.445 0.418 0.391 0.364 | 0.1 1 3 5 7 9 10 11 | 0.007 0.067 0.201 0.336 0.470 0.605 0.672 0.739 |
Illustrate: all contain the 60vol% nickel-zinc ferrite in each matrix material, weight is 2.4g
Embodiment 2:
Take by weighing an amount of nickel powder, polyvinylidene difluoride (PVDF) and 1.65g Z type plane hexad ferrite powder according to listed prescription in the table two and mix and be placed in the mould, at 200 ℃, hot pressing moulding in 15 minutes can obtain a series of samples under the 15MPa condition.Two seepage flow structures can be verified from the microstructure photograph of sample, as shown in Figure 5.The initial permeability of sample adopts Maxwell-Garnett formula and Bruggeman-Hanai formula Simulation result also to be shown among Fig. 6 in contrast with the variation tendency of nickel particle volume percentage composition as shown in Figure 6.The initial permeability of sample and quality factor are with the rule of frequency change as shown in Figure 7.The specific conductivity of sample and specific inductivity are with the Changing Pattern of nickel particle volume percentage composition as shown in Figure 8.
Table two embodiment 2 component prescriptions
| Numbering | PVDF | Ni | ||
| vol％ | g | vol％ | g | |
| B0 B1 B2 B3 B4 B5 | 39.9 39 37 35 33 31 | 0.400 0.391 0.371 0.351 0.331 0.311 | 0.1 1 3 5 7 9 | 0.005 0.050 0.149 0.249 0.349 0.448 |
Illustrate: all contain 60vol%Z type plane hexad ferrite in each matrix material, weight is 1.65g
Claims (5)
1, a kind of matrix material that has both the capacitor and inductor performance, it is characterized in that: described matrix material comprises inorganic materials ferrite, conducting metal nickel powder (Ni), and polymer materials, and its volume recipe ratio is: nickel 0.1～11%, ferrite 50～60%, polyvinylidene difluoride (PVDF) 30～40%.
2, according to the described matrix material of claim 1, it is characterized in that: described ferrite is nickel-zinc ferrite Ni
0.3Zn
0.7Fe
1.95O
4, or Z type plane hexad ferrite Ba
3Co
2Fe
23O
41
3, according to the described matrix material of claim 1, it is characterized in that: described polymer materials is polyvinylidene difluoride (PVDF) PVDF.
4, according to the described matrix material of claim 1, it is characterized in that: the ferritic granularity of described inorganic materials is: nickel 2～3 μ m, ferrite 75～100 μ m.
5, a kind ofly prepare the method that has both the matrix material of capacitor and inductor performance as claimed in claim 1, it is characterized in that: described composite material by adopting heat pressing process preparation, concrete technical process is:
(1) batching: take by weighing nickel powder 0.005～0.739g by above-mentioned prescription, the nickel-zinc ferrite powder 2.4g of 75～100 μ m or Z type plane hexad ferrite 1.65g, polyvinylidene difluoride (PVDF) 0.311～0.539g;
(2) join sample: nickel powder, polyvinylidene difluoride (PVDF) and ferrite powder are stirred according to aforementioned proportion, mix;
(3) moulding: the powder that step 2 is mixed is placed on the powder compressing machine, is 180～220 ℃ in temperature, and pressure is under the condition of 10～15MPa, hot pressing moulding in 20 minutes.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101246773B (en) * | 2007-02-12 | 2010-05-19 | 北京有色金属研究总院 | High-efficiency soft magnetic material and method for producing the same |
| CN101885886A (en) * | 2010-06-18 | 2010-11-17 | 宁波大学 | Preparation method for high dielectric polyvinylidene fluoride composite material |
| CN102653621A (en) * | 2011-03-03 | 2012-09-05 | 宁波大学 | Composite material with high dielectric constant and preparation method for composite material |
| CN105062417A (en) * | 2015-07-15 | 2015-11-18 | 北京新怡源环保科技有限公司 | Organic-inorganic composite nano microwave absorbing material and preparation method thereof |
| CN106633547A (en) * | 2016-12-15 | 2017-05-10 | 陕西科技大学 | Z-shaped ferrite flaky powder/PVDF (polyvinylidene fluoride) wave absorption composite material and preparation method thereof |
| CN108351233A (en) * | 2015-07-10 | 2018-07-31 | 南布列塔尼大学 | For physical features, preferably include the sensor of multilayered structure |
| CN108866819A (en) * | 2017-05-08 | 2018-11-23 | 清华大学 | A kind of polymer nanocomposites and preparation method thereof |
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| CN1388088A (en) * | 2002-06-10 | 2003-01-01 | 武汉理工大学 | Ferroelectric-ferromagnetic functional complex in three-layer perovskite-like structure and its prepn |
| CN1225433C (en) * | 2002-06-10 | 2005-11-02 | 武汉理工大学 | New prepn process of ferroelectric-ferromagnetic functional complex in three-layer perovskite-like structure |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101246773B (en) * | 2007-02-12 | 2010-05-19 | 北京有色金属研究总院 | High-efficiency soft magnetic material and method for producing the same |
| CN101885886A (en) * | 2010-06-18 | 2010-11-17 | 宁波大学 | Preparation method for high dielectric polyvinylidene fluoride composite material |
| CN102653621A (en) * | 2011-03-03 | 2012-09-05 | 宁波大学 | Composite material with high dielectric constant and preparation method for composite material |
| CN102653621B (en) * | 2011-03-03 | 2014-06-04 | 宁波大学 | Composite material with high dielectric constant and preparation method for composite material |
| CN108351233A (en) * | 2015-07-10 | 2018-07-31 | 南布列塔尼大学 | For physical features, preferably include the sensor of multilayered structure |
| CN108351233B (en) * | 2015-07-10 | 2023-07-07 | 南布列塔尼大学 | Sensor for physical features, preferably comprising a multilayer structure |
| CN105062417A (en) * | 2015-07-15 | 2015-11-18 | 北京新怡源环保科技有限公司 | Organic-inorganic composite nano microwave absorbing material and preparation method thereof |
| CN105062417B (en) * | 2015-07-15 | 2017-07-21 | 北京新怡源环保科技有限公司 | A kind of organo-mineral complexing nanometer microwave absorbing material and preparation method thereof |
| CN106633547A (en) * | 2016-12-15 | 2017-05-10 | 陕西科技大学 | Z-shaped ferrite flaky powder/PVDF (polyvinylidene fluoride) wave absorption composite material and preparation method thereof |
| CN106633547B (en) * | 2016-12-15 | 2018-11-27 | 陕西科技大学 | A kind of Z- type ferrite flaky powder/PVDF Wave suction composite material and preparation method thereof |
| CN108866819A (en) * | 2017-05-08 | 2018-11-23 | 清华大学 | A kind of polymer nanocomposites and preparation method thereof |
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