CN102476478A - Composite material and method and system for preparing same - Google Patents
Composite material and method and system for preparing same Download PDFInfo
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- CN102476478A CN102476478A CN2011102165857A CN201110216585A CN102476478A CN 102476478 A CN102476478 A CN 102476478A CN 2011102165857 A CN2011102165857 A CN 2011102165857A CN 201110216585 A CN201110216585 A CN 201110216585A CN 102476478 A CN102476478 A CN 102476478A
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Abstract
The invention provides a composite material and a method and a system for preparing the same, which are applicable to the field of materials. The method includes the steps of: preparing a porous PZT (lead zirconate titanate) sheet; dissolving PVDF (polyvinylidene fluoride) into organic solvents to prepare PVDF liquor and adopting a knifing method to prepare a compact film with the PVDF solution; and pressing the PZT sheet and the PVDF film into a substrate by a hot-pressing method. The compact PVDF film and the porous PZT sheet are used as raw materials and pressed into the laminate substrate by the hot-pressing method, the porous PZT sheet is isolated from the outside, a sealed pore layer structure is formed, and the piezoelectric performance of the substrate is greatly enhanced.
Description
[technical field]
The present invention relates to ultra field of materials, relate in particular to a kind of composite and preparation method thereof and system.
[background technology]
PVDF: Kynoar, a kind of macromolecular material of function admirable.Have good manufacturability, good mechanical property, operating temperature range is wide, good weatherability,, advantage such as resistance to medium good, dielectric constant high, piezoelectricity good little to the influence of ultraviolet ray and radiation.
PZT: lead zirconate-titanate ceramic, a kind of ceramic material with perovskite structure.Advantage such as have high-low temperature resistant, dielectric properties are good, and piezoelectric property is good, dimensional stability is good, thermal conductivity is good.
The tape casting: a kind of method for preparing thin-film ceramics, its process be, the ceramic solution for preparing is flow on the base band from hopper top, and the relative motion through base band and scraper forms biscuit, under capillary effect, forms the upper surface of brilliance
Ultra material generally forms by a plurality of ultra material function plate stack or by other rule array combination; Ultra material function plate comprises substrate and the array a plurality of micro-structurals on substrate; The substrate of existing ultra material is the organic or inorganic substrate of uniform material, like FR4, TP1 or the like.The a plurality of micro-structurals of array on substrate have specific electromagnetic property; Can produce electromagnetic response to electric field or magnetic field; Structure and arrangement regulation through to micro-structural carry out precise design and control; Can make ultra material demonstrate the electromagnetic property that various general material does not have, if can converge, disperse and deviation electromagnetic wave etc.Existing substrate is as the fixing base of micro-structural, and its preparation material multiselect is with the material of single character such as pottery, macromolecular material, and the material of said single character has different advantages: pottery can be high temperature resistant, and macromolecular material can be processed film.
But the single character substrate of prior art also has some unsurmountable shortcomings: the substrate thickness of ceramic material is big, the substrate bad mechanical property of macromolecular material preparation.
[summary of the invention]
The purpose of the embodiment of the invention is to provide a kind of preparation method of composite, is intended to solve the baseplate material single property of prior art, the problem of function singleness.
The embodiment of the invention is achieved in that a kind of preparation method of composite, said method comprising the steps of:
Preparation porous PZT thin slice;
PVDF is dissolved in organic solvent processes PVDF solution, adopt and scrape the film that embrane method is processed said PVDF solution densification;
Adopt pressure sintering that said PZT thin slice and said PVDF film are pressed into multilager base plate.
Another purpose of the embodiment of the invention is to provide a kind of preparation system of composite, and said system comprises:
PZT web preparation unit is used to prepare the PZT thin slice, and said PZT thin slice has loose structure;
PVDF film preparation unit is used to prepare the PVDF film, and said PVDF film has compact texture;
Substrate prepares the unit, is used for through pressure sintering the PZT thin slice of said PZT web preparation unit preparation and the PVDF film of PVDF film preparation unit preparation being pressed into substrate.
Another purpose of the embodiment of the invention is to provide a kind of composite of the preparation of method as stated, comprising:
The PVDF film, with the porous PZT thin slice of the tight lamination of PVDF film, said PVDF film and porous PZT thin slice replace tight lamination.
The embodiment of the invention; With the PVDF film of densification and the PZT thin slice of porous is raw material, uses pressure sintering that said PVDF film and PZT thin slice are developed into the substrate that replaces tight lamination, makes the PZT of porous be isolated from the outside; Form the pore layer structure of sealing, significantly increase the piezoelectric property of substrate.
[description of drawings]
Be illustrated in figure 1 as the structure chart of the composite that the embodiment of the invention provides;
Be illustrated in figure 2 as the flow chart of the composite material and preparation method thereof that the embodiment of the invention provides;
Be illustrated in figure 3 as the structure chart of the Composite Preparation system that the embodiment of the invention provides.
[specific embodiment]
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention; With the PVDF film of densification and the PZT thin slice of porous is raw material, uses pressure sintering that said PVDF film and PZT thin slice are developed into the substrate that replaces tight lamination, makes the PZT of porous be isolated from the outside; Form the pore layer structure of sealing, significantly increase the piezoelectric property of substrate.
Be illustrated in figure 1 as the structure chart of the composite that the embodiment of the invention provides,, the part relevant with the embodiment of the invention only be shown, comprising for the ease of explanation:
PVDF film 1, with the porous PZT thin slice 2 that PVDF film 1 closely links to each other, said PVDF film 1 and porous PZT thin slice 2 replace tight lamination.
In embodiments of the present invention; With the PZT lamina design is the porous pattern; Significantly increase the specific area of PZT thin slice, what make PZT thin slice and PVDF film combines closelyr, has improved the mechanical performance of composite; Because PZT thin slice and PVDF film all have piezoelectric property, make that PVDF molecule and PZT thin slice can better mutual embeddings simultaneously.
Be illustrated in figure 2 as the flow chart of the composite material and preparation method thereof that the embodiment of the invention provides, said method comprising the steps of:
In step S201, preparation porous PZT thin slice.
In embodiments of the present invention, use brown lead oxide, lead zirconates, lead titanates to prepare the PZT thin slice.The concrete realization flow of step S201 is following:
Brown lead oxide, lead zirconates, lead titanates are fully ground and mix powdered; Said powder is scattered in organic solvent and is stirred into dispersion liquid; Adopt The tape casting that said dispersion liquid is processed porous PZT thin slice.
In step S202, PVDF is dissolved in organic solvent processes PVDF solution, adopt and scrape the film that embrane method is processed said PVDF solution densification.
In step S203, adopt pressure sintering that said PZT thin slice and said PVDF film are pressed into substrate, said PZT thin slice and PVDF film replace tight lamination in substrate.
In embodiments of the present invention, the PZT thin slice of the PVDF film of densification and porous alternately is connected is pressed into substrate, make the PZT of porous be isolated from the outside, form the pore layer structure of sealing, significantly increase the piezoelectric property of substrate.It is to be noted that fine and close PVDF film is in the outermost layer of substrate all the time.It is to be noted that the embodiment of the invention mentions scrape embrane method and The tape casting is prior art, no longer give unnecessary details in this patent.
The embodiment of the invention; With the PVDF film of densification and the PZT thin slice of porous is raw material, uses pressure sintering that said PVDF film and PZT thin slice are developed into the substrate that replaces tight lamination, makes the PZT of porous be isolated from the outside; Form hole-closing structure, significantly increase the piezoelectric property of substrate.
As another embodiment of the present invention, after step S203, said method is further comprising the steps of:
In step S204, the heat said substrate that polarizes in silicone oil.
In embodiments of the present invention, the substrate that suppresses is carried out heat in silicone oil, the said substrate that polarizes is so that said substrate embodies piezoelectric property.
Be illustrated in figure 3 as the structure chart of the Composite Preparation system that the embodiment of the invention provides,, the part relevant with the embodiment of the invention only be shown, comprising for the ease of explanation:
PZT web preparation unit 301 is used to prepare the PZT thin slice, and said PZT thin slice has loose structure.
PVDF film preparation unit 302 is used to prepare the PVDF film, and said PVDF film has compact texture.
It is to be noted in embodiments of the present invention, though fine and close PVDF film replaces tight lamination with the PZT thin slice of porous, the outermost layer that the PVDF film of densification is in substrate as the top and the bottom of substrate all the time.
Wherein said PZT web preparation unit 301 specifically comprises:
Dispersion liquid prepares module 3012, is used for that the powder that said powder preparation module 3011 prepares is scattered in organic solvent and stirs.
PZT web preparation module 3013 is used to use The tape casting that the dispersion liquid that said dispersion liquid prepares module 3012 preparations is processed the PZT thin slice.
In embodiments of the present invention; Substrate prepares unit 303 and through pressure sintering the porous PZT thin slice of PZT web preparation unit 301 preparations and the PVDF film of PVDF film preparation unit 302 preparations is pressed into the substrate that replaces tight lamination; Make the PZT of porous be isolated from the outside; Form the pore layer structure of sealing, significantly increase the piezoelectric property of substrate.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the preparation method of a composite is characterized in that, said method comprising the steps of:
Preparation porous PZT thin slice;
PVDF is dissolved in organic solvent processes PVDF solution, adopt and scrape the film that embrane method is processed said PVDF solution densification;
Adopt pressure sintering that said PZT thin slice and said PVDF film are pressed into multilager base plate.
2. the method for claim 1 is characterized in that, said employing pressure sintering is pressed into said PZT thin slice and said PVDF film after the step of substrate, and said method is further comprising the steps of:
With the heat polarization in silicone oil of said substrate.
3. the method for claim 1 is characterized in that, said PZT thin slice and PVDF film alternatively laminated in substrate.
4. the method for claim 1 is characterized in that, the step of said preparation porous PZT thin slice is specially:
Brown lead oxide, lead zirconates, lead titanates are fully ground and mix powdered;
Said powder is scattered in the organic solvent organic solvent and is stirred into dispersion liquid;
Adopt The tape casting that said PZT solution is processed porous PZT thin slice.
5. like each described method of claim 1-4, it is characterized in that said PVDF film is in the outermost layer of substrate all the time.
6. the preparation system of a composite is characterized in that, said system comprises:
PZT web preparation unit is used to prepare the PZT thin slice, and said PZT thin slice has loose structure;
PVDF film preparation unit is used to prepare the PVDF film, and said PVDF film has compact texture;
Substrate prepares the unit, is used for through pressure sintering the PZT thin slice of said PZT web preparation unit preparation and the PVDF film of PVDF film preparation unit preparation being pressed into substrate.
7. system as claimed in claim 6 is characterized in that, said system also comprises:
The substrate polarisation unit is used at the polarize substrate of said substrate press unit compacting of silicone oil heat.
8. system as claimed in claim 6 is characterized in that, said PZT web preparation unit specifically comprises:
The powder preparation module is processed powder after being used for brown lead oxide, lead zirconates, lead titanates fully ground by a certain percentage and mix;
Dispersion liquid prepares module, is used for powder with the preparation of said powder preparation module and is scattered in organic solvent and stirs;
PZT web preparation module is used to use The tape casting that the dispersion liquid that said dispersion liquid prepares the module preparation is processed the PZT thin slice.
9. system as claimed in claim 6 is characterized in that, said PZT thin slice and PVDF film alternatively laminated in substrate.
10. composite of method preparation according to claim 1 is characterized in that said composite comprises:
The PVDF film, with the porous PZT thin slice of the tight lamination of PVDF film, said PVDF film and porous PZT thin slice replace tight lamination.
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| CN 201110216585 CN102476478B (en) | 2011-07-29 | 2011-07-29 | Composite material and method and system for preparing same |
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| CN 201110216585 CN102476478B (en) | 2011-07-29 | 2011-07-29 | Composite material and method and system for preparing same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106206928A (en) * | 2016-07-07 | 2016-12-07 | 南京信息工程大学 | A kind of piezoelectricity function porous electrode composite and preparation method |
| CN112239327A (en) * | 2020-10-14 | 2021-01-19 | 北京化工大学 | Piezoelectric intelligent material for active control of structural vibration |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1392194A (en) * | 2002-07-02 | 2003-01-22 | 武汉理工大学 | Poly meta-fluoroethylene/lead zirconate titanate/terbium dysprosium iron composite material sheet with magnetoelectric property and its preparation |
| CN1776928A (en) * | 2005-11-30 | 2006-05-24 | 南京大学 | Plane-type compound structure supersonic transducer |
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2011
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1392194A (en) * | 2002-07-02 | 2003-01-22 | 武汉理工大学 | Poly meta-fluoroethylene/lead zirconate titanate/terbium dysprosium iron composite material sheet with magnetoelectric property and its preparation |
| CN1776928A (en) * | 2005-11-30 | 2006-05-24 | 南京大学 | Plane-type compound structure supersonic transducer |
Non-Patent Citations (3)
| Title |
|---|
| 张丽丽: "聚合物/压电陶瓷复合材料的制备和性能研究", 《武汉理工大学申请硕士学位论文》 * |
| 蔡宁等: "PZT/Terfenol-D/PVDF层状复合磁电材料谐振特性", 《稀有金属材料与工程》 * |
| 黄学辉，肖文文: "多孔PZT的制备与性能研究", 《压电与声光》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106206928A (en) * | 2016-07-07 | 2016-12-07 | 南京信息工程大学 | A kind of piezoelectricity function porous electrode composite and preparation method |
| CN106206928B (en) * | 2016-07-07 | 2019-03-26 | 南京信息工程大学 | A kind of piezoelectricity function porous electrode composite material and preparation method |
| CN112239327A (en) * | 2020-10-14 | 2021-01-19 | 北京化工大学 | Piezoelectric intelligent material for active control of structural vibration |
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| CN102476478B (en) | 2013-07-03 |
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