CN109553903A - CaCu 3 Ti 4 O composite mortar, CaCu 3 Ti 4 O composite film material and preparation method thereof - Google Patents
CaCu 3 Ti 4 O composite mortar, CaCu 3 Ti 4 O composite film material and preparation method thereof Download PDFInfo
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- CN109553903A CN109553903A CN201811488135.1A CN201811488135A CN109553903A CN 109553903 A CN109553903 A CN 109553903A CN 201811488135 A CN201811488135 A CN 201811488135A CN 109553903 A CN109553903 A CN 109553903A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
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Abstract
The present invention relates to a kind of CaCu 3 Ti 4 O composite mortars, CaCu 3 Ti 4 O composite film material and preparation method thereof, comprising the following steps: mixes CaCu 3 Ti 4 O, polyethylene alcohol and water up to the CaCu 3 Ti 4 O composite mortar.Since polyvinyl alcohol is a kind of high molecular material that is nontoxic and being dissolved in water, therefore CaCu 3 Ti 4 O powder, PVA and water can be mixed and made into composite mortar, and then composite film material can be conveniently fabricated by the methods of the tape casting, cladding process using the composite mortar, preparation process is simple.PVA dielectric constant with higher simultaneously, therefore the composite film material being prepared not only dielectric constant with higher, but also preferable flexible and processing performance can be met.In addition, PVA does not have ferroelectricity, or uniquely can polyvinyl by bacterium as carbon source and using energy source, large effect will not caused to environment being discarded after scrapping using electronic component made of the CaCu 3 Ti 4 O composite mortar.
Description
Technical field
The present invention relates to dielectric material technical fields, multiple more particularly to a kind of CaCu 3 Ti 4 O composite mortar, CaCu 3 Ti 4 O
Close thin-film material and preparation method thereof.
Background technique
With the development of electronics and information industry, to electronic component micromation, integrated, intelligentized application demand is quick
Increase.More and more electronic components, such as energy-storage capacitor, medium substrate, dynamic RAM, inserted thin film capacitor
Deng not only having required dielectric substance to have excellent dielectric properties, but also it is required to have good mechanical property and processing performance.Example
As light-weight, high-power inserted thin film capacitor that energy storage density is high must using density is small, dielectric constant is high, loss is low,
Easy processing and the high dielectric substance of heat-resistant stability are as charge storage carrier.
Traditional inorganic piezoelectric ceramics have high dielectric constant and higher stability, but its brittleness is big, processing temperature compared with
Height limits its application with the disadvantages of current circuit integration processing technology poor compatibility.Polymer dielectric material has
Excellent processing performance, lower processing temperature and lower dielectric loss, but its dielectric constant is usually lower, it is difficult to meet embedding
Enter the performance requirement of formula thin film capacitor.
Summary of the invention
Based on this, it is necessary to provide a kind of material that can be prepared dielectric constant with higher and there is preferable processing performance
The CaCu 3 Ti 4 O composite mortar of material.
A kind of preparation method of CaCu 3 Ti 4 O composite mortar, comprising the following steps: mix CaCu 3 Ti 4 O, polyethylene alcohol and water
The even CaCu 3 Ti 4 O composite mortar to obtain the final product.
The present invention mixes CaCu 3 Ti 4 O and polyvinyl alcohol and water to arrive a kind of CaCu 3 Ti 4 O composite mortar.Due to
Polyvinyl alcohol (PVA) is a kind of high molecular material that is nontoxic and being dissolved in water, therefore can be by CaCu 3 Ti 4 O powder, PVA and water
It is mixed and made into composite mortar, and then can be conveniently fabricated by the methods of the tape casting, cladding process using the composite mortar compound
Thin-film material, preparation process is simple, easily controllable.Meanwhile PVA dielectric constant with higher (5~8), therefore make
For obtained composite film material not only dielectric constant with higher, but also preferable flexible and processing performance can be met.In addition,
PVA does not have ferroelectricity, or uniquely can polyvinyl by bacterium as carbon source and using energy source, in bacterium and mould
Under effect, 46 days degradable 75%, be a kind of Biodegradable polymer material.This to utilize the CaCu 3 Ti 4 O composite mortar
Manufactured electronic component will not cause large effect to environment being discarded after scrapping, and be that other macromolecules are compound
What material hardly matched.
The CaCu 3 Ti 4 O in the CaCu 3 Ti 4 O composite mortar accounts for CaCu 3 Ti 4 O and polyethylene in one of the embodiments,
The percent by volume of the total volume of alcohol is 10%~50%.
The CaCu 3 Ti 4 O in the CaCu 3 Ti 4 O composite mortar accounts for CaCu 3 Ti 4 O and polyethylene in one of the embodiments,
The percent by volume of the total volume of alcohol is 35%~45%.
In one of the embodiments, in the CaCu 3 Ti 4 O composite mortar, the mass percent of the CaCu 3 Ti 4 O is
3%~9%, the mass percent of the polyvinyl alcohol is 2%~5%.
In one of the embodiments, specifically includes the following steps:
The polyvinyl alcohol is dissolved in water, poly-vinyl alcohol solution is made；
CaCu 3 Ti 4 O slurry is made in the CaCu 3 Ti 4 O and water mixed grinding；
The poly-vinyl alcohol solution is uniformly mixed with the CaCu 3 Ti 4 O slurry up to the CaCu 3 Ti 4 O composite mortar.
The mass percent of polyvinyl alcohol is 1%~10% in the poly-vinyl alcohol solution in one of the embodiments,
The mass percent of CaCu 3 Ti 4 O is 5%~30% in the CaCu 3 Ti 4 O slurry.
The specific steps of the grinding include: by the CaCu 3 Ti 4 O and water in 160rpm in one of the embodiments,
Ball milling 0.5h~2h under the revolving speed of~220rpm.
The present invention also provides a kind of CaCu 3 Ti 4 O composite mortars, are prepared according to above-mentioned preparation method.
The present invention also provides a kind of CaCu 3 Ti 4 O composite film materials, are prepared into using above-mentioned CaCu 3 Ti 4 O composite mortar
It arrives.
The present invention also provides a kind of preparation methods of CaCu 3 Ti 4 O composite film material, comprising the following steps: will be above-mentioned
CaCu 3 Ti 4 O composite mortar coats to form film, dry, obtains the CaCu 3 Ti 4 O composite film material.
Detailed description of the invention
Fig. 1 is the photo of CaCu 3 Ti 4 O composite film material prepared by embodiment 2；
Fig. 2 is the surface Scanning Electron microscope photo of CaCu 3 Ti 4 O composite film material prepared by embodiment 2.
Specific embodiment
To facilitate the understanding of the present invention, below will be to invention is more fully described, there is shown of the invention
Preferred embodiment.But the invention can be realized in many different forms, however it is not limited to embodiment described herein.
It is made the disclosure of the present invention more thorough and comprehensive on the contrary, purpose of providing these embodiments is.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more phases
Any and all combinations of the listed item of pass.
The preparation method of the CaCu 3 Ti 4 O composite mortar of one embodiment of the invention, comprising the following steps: by CaCu 3 Ti 4 O, gather
Ethylene alcohol and water mixes up to CaCu 3 Ti 4 O composite mortar.
CaCu 3 Ti 4 O (CaCu3Ti4O12, CCTO) with superelevation dielectric constant, and have good frequency stability (<
1MHz) and temperature stability (100K~600K).And it is different from BaTiO3There are phase transformations in curie point for equal ferroelectric materials, above-mentioned
In temperature range (100K~600K), any phase transformation is not observed in CCTO.In addition, there are also good non-linear electricity by CCTO
Stream-voltage (I-V) characteristic.But in practical applications, film is particularly suited for preparing various electricity devices, and pure inorganic
The brittleness of CCTO thin-film material is big, and structural strength is relatively low, this causes its machinability poor, it is difficult to practical application.Therefore attempting will
CCTO powder is filled in organic polymer, such as polyimides (PI), Kynoar (PVDF) and epoxy resin etc..Although
CCTO powder, which is filled in composite material obtained in these macromolecule matrixes, a higher dielectric constant, but with these high scores
Subbase body fills composite material made from CCTO powder and there is certain deficiency.Such as the dielectric constant (2~3) of PI matrix is relatively
Low, composite material dielectric constant with higher can be made by needing higher CCTO charging quantity, but excessively high CCTO charging quantity is again
It will seriously affect the flexibility and processing performance of composite material.Epoxy resin is thermosetting material, composite material one made from it
As flexible and processing performance it is relatively low.PVDF has ferroelectricity, it is difficult to apply at high temperature, and these macromolecule matrixes are big
It being difficult to degrade more, for the electronic component prepared with its composite material once scrapped, the recovery processing of component will be relatively difficult,
If environment will be adversely affected by being discarded.
The present embodiment mixes CaCu 3 Ti 4 O and polyvinyl alcohol and water to arrive a kind of CaCu 3 Ti 4 O composite mortar.By
In polyvinyl alcohol (PVA) be a kind of high molecular material nontoxic and that water can be dissolved in, therefore can by CaCu 3 Ti 4 O powder, PVA and
Water is mixed and made into composite mortar, and then can be conveniently fabricated again using the composite mortar by the methods of the tape casting, cladding process
Thin-film material is closed, preparation process is simple, easily controllable.Meanwhile PVA dielectric constant with higher (5~8), therefore
The composite film material being prepared not only dielectric constant with higher, but also preferable flexible and processing performance can be met.In addition,
PVA does not have ferroelectricity, or uniquely can polyvinyl by bacterium as carbon source and using energy source, in bacterium and mould
Under effect, 46 days degradable 75%, be a kind of Biodegradable polymer material.This to utilize the CaCu 3 Ti 4 O composite mortar
Manufactured electronic component will not cause large effect to environment being discarded after scrapping, and be that other macromolecules are compound
What material hardly matched.
In a specific example, the volume ratio of CaCu 3 Ti 4 O and polyvinyl alcohol in CaCu 3 Ti 4 O composite mortar be (1~
5): (5~9).Preferably, the volume ratio of the CaCu 3 Ti 4 O in CaCu 3 Ti 4 O composite mortar and polyvinyl alcohol is (3.5~4.5):
(5.5~6.5).In this way, optimizing by the volume ratio to CaCu 3 Ti 4 O and polyvinyl alcohol, CaCu 3 Ti 4 O can further improve
The dielectric properties and processing performance of CaCu 3 Ti 4 O laminated film made from composite mortar.
In a specific example, in CaCu 3 Ti 4 O composite mortar, the mass percent of CaCu 3 Ti 4 O is (please supplement), is gathered
The mass percent of vinyl alcohol is (please supplement).Pass through the quality percentage of CaCu 3 Ti 4 O and polyvinyl alcohol in control composite mortar
Than that the two can be made to be better mixed uniformly, and keep composite mortar film forming ability in coating preferable, so that it be enabled to be prepared
Composite film material performance it is more excellent more stable.
In a specific example, specifically includes the following steps: polyvinyl alcohol, which is dissolved in water, is made poly-vinyl alcohol solution；It will
CaCu 3 Ti 4 O slurry is made in CaCu 3 Ti 4 O and water mixed grinding；Poly-vinyl alcohol solution is uniformly mixed with CaCu 3 Ti 4 O slurry to obtain the final product
CaCu 3 Ti 4 O composite mortar.In this way, solution first is made in polyvinyl alcohol respectively, after slurry is made in CaCu 3 Ti 4 O, then by solution
The two can be made more fully to be mutually mixed with slurry mixing to be uniformly distributed, be conducive to improve the composite film material being prepared
Performance.
In a specific example, the mass percent of polyvinyl alcohol is 1%~10% in poly-vinyl alcohol solution, copper titanate
The mass percent of CaCu 3 Ti 4 O is 5%~30% in calcium slurry.
In a specific example, the specific steps of grinding include: by CaCu 3 Ti 4 O and water 160rpm~220rpm's
Ball milling 0.5h~2h under revolving speed.
A kind of CaCu 3 Ti 4 O composite mortar of one embodiment of the invention, is prepared according to above-mentioned preparation method.
A kind of CaCu 3 Ti 4 O composite film material of one embodiment of the invention is prepared using above-mentioned CaCu 3 Ti 4 O composite mortar
It obtains.
The preparation method of a kind of CaCu 3 Ti 4 O composite film material of one embodiment of the invention, comprising the following steps: will be upper
CaCu 3 Ti 4 O composite mortar is stated to coat to form film, it is dry, obtain CaCu 3 Ti 4 O composite film material.
In a specific example, deaeration is carried out to CaCu 3 Ti 4 O composite mortar before coating, to improve the matter of film forming
Amount.Specifically, the mode of deaeration is vacuum defoamation, and the pressure of deaeration is -0.10MPa~-0.08MPa, inclined heated plate 5min
~20min.
In a specific example, CaCu 3 Ti 4 O composite film material with a thickness of 10 μm~100 μm.
The following are specific embodiments.
Embodiment 1
Polyvinyl alcohol is dissolved in, the poly-vinyl alcohol solution that mass percent is 10% is made in 90 DEG C of deionized waters.Then will
The deionized water of the CaCu 3 Ti 4 O powder of 1 part of quality and 19 parts of quality is added in ball grinder, in high-energy planetary ball mill machine with
Revolving speed ball milling 1 hour of 180rpm obtains the CaCu 3 Ti 4 O slurry that mass percent is 5%.By gained CaCu 3 Ti 4 O slurry with
The poly-vinyl alcohol solutions of 6.2 parts of quality is uniformly mixed up to CaCu 3 Ti 4 O composite mortar, wherein CaCu 3 Ti 4 O account for CaCu 3 Ti 4 O and
The percent by volume of the total volume of polyvinyl alcohol is about 30%, and (density of CaCu 3 Ti 4 O is 4.9g/cm3, the density of polyvinyl alcohol
For 1.3g/cm3).CaCu 3 Ti 4 O composite mortar is coated after -0.08MPa vacuum defoamation 20min and forms film, is obtained after dry
To the CaCu 3 Ti 4 O composite film material with a thickness of 40 μm.It is tested through precise impedance analyzer, the CaCu 3 Ti 4 O THIN COMPOSITE membrane material
Expect that in the dielectric constant of 100Hz test frequency at room temperature be 160.9, dielectric loss 0.27.
Comparative example 1
Kynoar stirring in n,N-Dimethylformamide solution is dissolved in first extremely (to prepare in homogeneous transparent colloidal
The Kynoar solution for being 10% at mass percent), 9 parts of quality then are added in the CaCu 3 Ti 4 O powder of 1 part of quality
N,N-Dimethylformamide solution, which stirs, obtains the CaCu 3 Ti 4 O slurry that mass percent is 10% for 1 hour.By gained copper titanate
Calcium slurry is uniformly mixed up to CaCu 3 Ti 4 O composite mortar with the Kynoar solution of 4.76 parts of quality, and wherein CaCu 3 Ti 4 O accounts for
The percent by volume of the total volume of CaCu 3 Ti 4 O and Kynoar is about 30%, and (density of CaCu 3 Ti 4 O is 4.9g/cm3, gather
The density of vinylidene is 1.8g/cm3).CaCu 3 Ti 4 O composite mortar is coated to formation after -0.1MPa vacuum defoamation 20min
Film obtains the CaCu 3 Ti 4 O with a thickness of 40 μm/polyvinylidene fluoride composite film material after dry.It is surveyed through precise impedance analyzer
Examination, the composite film material are 52.6 in the dielectric constant of 100Hz test frequency at room temperature, dielectric loss 0.30.
Comparative example 2
Suitable 4,4- diaminodiphenyl ether is dissolved in a certain amount of n,N-dimethylacetamide first, it then will be certain
The CaCu 3 Ti 4 O powder of amount is added in above-mentioned mixed liquor and stirs evenly, and adds a certain amount of pyromellitic dianhydride, continues to stir
A period of time obtains the CaCu 3 Ti 4 O composite mortar of viscosity.By CaCu 3 Ti 4 O composite mortar after -0.1MPa vacuum defoamation 20min
Coating forms film, and the CaCu 3 Ti 4 O with a thickness of 40 μm/polyimide composite film material is obtained after 150 DEG C of dryings.Wherein titanium
The percent by volume for the total volume that sour copper calcium accounts for CaCu 3 Ti 4 O and polyimides is about 30%.It is tested through precise impedance analyzer,
The composite film material is 31.9 in the dielectric constant of 100Hz test frequency at room temperature, dielectric loss 0.19.
Embodiment 2
Polyvinyl alcohol is dissolved in, the poly-vinyl alcohol solution that mass percent is 7% is made in 90 DEG C of deionized waters.Then by 1
The CaCu 3 Ti 4 O powder of part quality in the deionized water addition ball grinder of 5 parts of quality, in high-energy planetary ball mill machine with
The revolving speed ball milling 45min of 200rpm obtains the CaCu 3 Ti 4 O slurry that mass percent is 16.7%.By gained CaCu 3 Ti 4 O slurry
It is uniformly mixed with the poly-vinyl alcohol solution of 5.7 parts of quality up to CaCu 3 Ti 4 O composite mortar, wherein CaCu 3 Ti 4 O accounts for CaCu 3 Ti 4 O
Percent by volume with the total volume of polyvinyl alcohol is about 40%.By CaCu 3 Ti 4 O composite mortar warp -0.1MPa vacuum defoamation
Coating forms film after 10min, obtains the CaCu 3 Ti 4 O composite film material with a thickness of 60 μm after dry.It is analyzed through precise impedance
Instrument test, the CaCu 3 Ti 4 O composite film material are 281.6 in the dielectric constant of 100Hz test frequency at room temperature, dielectric loss
It is 0.25.As shown in Figure 1, for the photo of CaCu 3 Ti 4 O composite film material prepared by the present embodiment, it is seen that thin film flexible is very
Good, Fig. 2 is the surface Scanning Electron microscope photo of CaCu 3 Ti 4 O composite film material prepared by the present embodiment, CaCu 3 Ti 4 O
Powder is fully filled in polyvinyl alcohol matrix.
Embodiment 3
Polyvinyl alcohol is dissolved in, the poly-vinyl alcohol solution that mass percent is 5% is made in 90 DEG C of deionized waters.Then by 1
The CaCu 3 Ti 4 O powder of part quality in the deionized water addition ball grinder of 2.3 parts of quality, in high-energy planetary ball mill machine with
The revolving speed ball milling 30min of 220rpm obtains the CaCu 3 Ti 4 O slurry that mass percent is 30%.By gained CaCu 3 Ti 4 O slurry with
The poly-vinyl alcohol solutions of 21.2 parts of quality is uniformly mixed up to CaCu 3 Ti 4 O composite mortar, wherein CaCu 3 Ti 4 O account for CaCu 3 Ti 4 O and
The percent by volume of the total volume of polyvinyl alcohol is about 20%.By CaCu 3 Ti 4 O composite mortar warp -0.09MPa vacuum defoamation
Coating forms film after 15min, obtains the CaCu 3 Ti 4 O composite film material with a thickness of 30 μm after dry.It is analyzed through precise impedance
Instrument test, the CaCu 3 Ti 4 O composite film material are 93.4 in the dielectric constant of 100Hz test frequency at room temperature, and dielectric loss is
0.17。
Embodiment 4
The hot deionized water of the polyvinyl alcohol of 0.62 part of quality, the CaCu 3 Ti 4 O of 1 part of quality and 24.58 parts of quality is added
In ball grinder, CaCu 3 Ti 4 O composite mortar was obtained with the revolving speed ball milling of 180rpm 1 hour in high-energy planetary ball mill machine, wherein titanium
The percent by volume for the total volume that sour copper calcium accounts for CaCu 3 Ti 4 O and polyvinyl alcohol is about 30%.By CaCu 3 Ti 4 O composite mortar warp-
Coating forms film after 0.08MPa vacuum defoamation 20min, obtains the CaCu 3 Ti 4 O THIN COMPOSITE membrane material with a thickness of 40 μm after dry
Material.It is tested through precise impedance analyzer, the dielectric constant of the CaCu 3 Ti 4 O composite film material in 100Hz test frequency at room temperature
It is 123.5, dielectric loss 0.79.
Embodiment 5
Polyvinyl alcohol is dissolved in, the poly-vinyl alcohol solution that mass percent is 4% is made in 90 DEG C of deionized waters.Then by 1
The CaCu 3 Ti 4 O powder of part quality in the deionized water addition ball grinder of 19 parts of quality, in high-energy planetary ball mill machine with
Revolving speed ball milling 1 hour of 180rpm obtains the CaCu 3 Ti 4 O slurry that mass percent is 5%.By gained CaCu 3 Ti 4 O slurry with
The poly-vinyl alcohol solutions of 15.5 parts of quality is uniformly mixed up to CaCu 3 Ti 4 O composite mortar, wherein CaCu 3 Ti 4 O account for CaCu 3 Ti 4 O and
The percent by volume of the total volume of polyvinyl alcohol is about 30%.By CaCu 3 Ti 4 O composite mortar warp -0.08MPa vacuum defoamation
Coating forms film after 20min, obtains the CaCu 3 Ti 4 O composite film material with a thickness of 40 μm after dry.It is analyzed through precise impedance
Instrument test, the CaCu 3 Ti 4 O composite film material are 116.3 in the dielectric constant of 100Hz test frequency at room temperature, dielectric loss
It is 0.65.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of preparation method of CaCu 3 Ti 4 O composite mortar, which comprises the following steps: by CaCu 3 Ti 4 O, poly- second
Alkene alcohol and water mixes up to the CaCu 3 Ti 4 O composite mortar.
2. preparation method according to claim 1, which is characterized in that the CaCu 3 Ti 4 O in the CaCu 3 Ti 4 O composite mortar
The percent by volume for accounting for the total volume of CaCu 3 Ti 4 O and polyvinyl alcohol is 10%~50%.
3. preparation method according to claim 2, which is characterized in that the CaCu 3 Ti 4 O in the CaCu 3 Ti 4 O composite mortar
The percent by volume for accounting for the total volume of CaCu 3 Ti 4 O and polyvinyl alcohol is 35%~45%.
4. preparation method according to claim 2, which is characterized in that in the CaCu 3 Ti 4 O composite mortar, the metatitanic acid
The mass percent of copper calcium is 3%~9%, and the mass percent of the polyvinyl alcohol is 2%~5%.
5. preparation method according to any one of claims 1 to 4, which is characterized in that specifically includes the following steps:
The polyvinyl alcohol is dissolved in water, poly-vinyl alcohol solution is made；
CaCu 3 Ti 4 O slurry is made in the CaCu 3 Ti 4 O and water mixed grinding；
The poly-vinyl alcohol solution is uniformly mixed with the CaCu 3 Ti 4 O slurry up to the CaCu 3 Ti 4 O composite mortar.
6. preparation method according to claim 5, which is characterized in that the quality of polyvinyl alcohol in the poly-vinyl alcohol solution
Percentage is 1%~10%, and the mass percent of CaCu 3 Ti 4 O is 5%~30% in the CaCu 3 Ti 4 O slurry.
7. preparation method according to claim 5, which is characterized in that the specific steps of the grinding include: by the titanium
Sour copper calcium and water ball milling 0.5h~2h under the revolving speed of 160rpm~220rpm.
8. a kind of CaCu 3 Ti 4 O composite mortar, which is characterized in that described in any item preparation method systems according to claim 1~7
It is standby to obtain.
9. a kind of CaCu 3 Ti 4 O composite film material, which is characterized in that use CaCu 3 Ti 4 O composite mortar according to any one of claims 8
It is prepared.
10. a kind of preparation method of CaCu 3 Ti 4 O composite film material, which comprises the following steps: by claim 8
The CaCu 3 Ti 4 O composite mortar coats to form film, dry, obtains the CaCu 3 Ti 4 O composite film material.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110183803A (en) * | 2019-06-12 | 2019-08-30 | 四川大学 | A kind of transparent dielectric film and preparation method thereof |
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