CN108440877A - A kind of preparation method of barium titanate/polyvinylidene fluoride composite material - Google Patents
A kind of preparation method of barium titanate/polyvinylidene fluoride composite material Download PDFInfo
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- CN108440877A CN108440877A CN201810199269.5A CN201810199269A CN108440877A CN 108440877 A CN108440877 A CN 108440877A CN 201810199269 A CN201810199269 A CN 201810199269A CN 108440877 A CN108440877 A CN 108440877A
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- 239000002131 composite material Substances 0.000 title claims abstract description 53
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910002113 barium titanate Inorganic materials 0.000 title claims abstract description 25
- 239000002033 PVDF binder Substances 0.000 title claims abstract description 23
- 229920002981 polyvinylidene fluoride Polymers 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 30
- 239000002245 particle Substances 0.000 claims abstract description 15
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000011521 glass Substances 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 230000015556 catabolic process Effects 0.000 claims abstract description 9
- 239000000725 suspension Substances 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 4
- 238000001291 vacuum drying Methods 0.000 claims abstract 2
- 238000012360 testing method Methods 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical group [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 claims description 5
- 238000010998 test method Methods 0.000 claims description 5
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000012512 characterization method Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 229920002545 silicone oil Polymers 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 238000004321 preservation Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract 1
- 238000010907 mechanical stirring Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 229920013657 polymer matrix composite Polymers 0.000 description 2
- 239000011160 polymer matrix composite Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- CHBCHAGCVIMDKI-UHFFFAOYSA-N [F].C=C Chemical group [F].C=C CHBCHAGCVIMDKI-UHFFFAOYSA-N 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000000640 hydroxylating effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
-
- 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
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0003—Composite materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/44—Resins; Plastics; Rubber; Leather
- G01N33/442—Resins; Plastics
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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
- C08J2327/00—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 a halogen; Derivatives of such polymers
- C08J2327/02—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 a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—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 a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/16—Homopolymers or copolymers of vinylidene fluoride
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Medicinal Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Food Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
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Abstract
The invention discloses a kind of preparation methods of barium titanate/polyvinylidene fluoride composite material, include the following steps：The aqueous hydrogen peroxide solution of the BT particles of 15g and 350ml is added in three-necked flask, ultrasonic disperse 20min, then reaction system is heated to 106 DEG C, 6h is reacted under mechanical stirring, filtration washing is carried out after suspension cooling, finally product is placed into 80 DEG C of baking oven and is dried, white powder is finally obtained after being ground with mortar, suitable BT powder and DMF solution are added in there-necked flask, after ultrasonic disperse about 30min, it puts it into 70 DEG C of water-bath, suitable PVDF powder is added into reaction system, 2h postcoolings that the reaction was continued are to room temperature, obtained thick white shape liquid is unfolded on a glass, after glass plate is moved to vacuum drying oven bubble removing, glass plate is put into convection oven and is dried, obtain the laminated film of white.Composite material dielectric constant and fissipation factor are small, and breakdown strength is high, and frequency stability and temperature stability are good.
Description
Technical field
The present invention relates to technical field of composite preparation more particularly to a kind of barium titanate/polyvinylidene fluoride composite materials
Preparation method.
Background technology
With the fast development of electronics industry, it is desirable that its component has smaller size.Existing capacitor is directly welded
It is connected on the surface of circuit board, thus capacitor occupies prodigious area among integrated circuit.High dielectric constant material can
So that prepared capacitor has smaller volume, and then reduces capacitor size occupied on integrated circuit board,
Be conducive to the miniaturization of integrated circuit, therefore there is important application value.
Polymer matrix composite material with high dielectric constant obtains the concern of researcher in recent years, it is desired to be able to by will have compared with
The inorganic particulate of high-k is blended with polymeric matrix easy to process, to obtain easy to process and have higher dielectric normal
Several polymer matrix composites.Since the dielectric constant of polymer itself is relatively low, and the dielectric constant of composite material is very
The dielectric constant of polymeric matrix, therefore PVDF and its copolymer material with high-k, warp are depended in big degree
Matrix is often used as to improve the dielectric constant of composite material.However this material equally has its limitation, it is first, this
The dielectric constant of material usually has poor temperature stability.Secondly, the fissipation factor of PVDF materials itself is larger, this will make
It obtains it and brings a large amount of heat during application, to influence the performance of its composite material.
Although many research workers attempt by adding different filler grains with shadow among various polymeric matrixs
Numerous performances such as dielectric constant, fissipation factor, the thermal stability of sound composite material, but few focus of attention composite materials
Influence of the interface for its dielectric properties, actually interface performance can largely go to change the property of composite material
Energy.
Invention content
The purpose of the present invention is to solve in the prior art the shortcomings that, and propose a kind of barium titanate/Kynoar
The preparation method of composite material.
A kind of preparation method of barium titanate/polyvinylidene fluoride composite material, includes the following steps：
S1, the BT particles for weighing 15g measure the aqueous hydrogen peroxide solution of 350ml, spare；
S2, by step S1 BT particles and aqueous hydrogen peroxide solution be added in three-necked flask, ultrasonic disperse 20min；
S3, on the basis of step S2, three-necked flask is put into 106 DEG C of sand-baths, mechanic whirl-nett reaction 6h；
S4, it will be filtered after the suspension cooling obtained by step S3, clear water be used in combination repeatedly to wash；
S5, the product obtained by step S4 is placed into 80 DEG C of baking oven and is dried, white is finally obtained after being ground with mortar
Powder；
S6, by obtained by step S5 appropriate white BT powder and DMF solution be added in there-necked flask, ultrasonic disperse 30min
Left and right；
S7, on the basis of step S6, three-necked flask is put into 70 DEG C of water-bath；
Suitable PVDF powder is added in S8, the three-necked flask into step S7,2h postcoolings that the reaction was continued are obtained to room temperature
To thick white shape liquid；
S9, the thick white shape liquid obtained by step S8 is unfolded on a glass, glass plate, which is then put into vacuum, dries
It is vacuumized in case, the bubble in removing system；
S10, on the basis of step S9, glass plate is put into convection oven and is dried at 80 DEG C, obtain white answer
Close film.
Preferably, the aqueous hydrogen peroxide solution concentration 30%, and the aqueous hydrogen peroxide solution specification is analysis
It is pure.
Preferably, the BT particles are nanoscale barium titanate or micron order barium titanate.
The invention also provides a kind of test methods of barium titanate/polyvinylidene fluoride composite material, include the following steps：
S1, BT powder after tabletting, is changed it with Nexus670 type Fourier transformation infrared spectrometers together with potassium bromide
It learns structure to be analyzed, completes to test the FTIR of BT powder；
S2, emit X-ray using the K α targets of Cu, wavelength is the monochromatic x-rays of 0.154nm, right in the range of 10 ° -90 °
BT powder samples are scanned, and complete the XRD tests of BT powder；
S3, the BT powder prepared among absolute ethyl alcohol is subjected to ultrasonic disperse, appropriate suspension is taken to be added drop-wise to carbon film
On, it is observed using TEM after it is air-dried, completes the TEM tests of BT powder；
S4, composite sample is put among liquid nitrogen quench it is disconnected, then to its surface metal spraying after, carried out using SEM
Observation is completed to test the SEM of composite material；
S5, it between composite sample is placed on two sphere poles impregnated by silicone oil, using direct current, is rising
It pressurizes to sample under the speed that pressure rate is about 100V/s, until sample breakdown position, the thickness phase of each test sample
Closely, it takes 20 points to test in each sample, completes the test of composite material breakdown strength；
S6, composite sample 3-5mg is taken, placed it in aluminium crucible, in the atmosphere for the N2 that flow velocity is 50ml/min
Under, it is warming up at 220 DEG C and keeps the temperature 2min with the thermal history of material removal, then cooled down with the rate of temperature fall of 10 DEG C/min, and remember
The calorific value variation for recording material, completes the hot property characterization test of composite material；
S7, composite sample is cut into the square that the length of side is about 1cm, then coats silver in the upper and lower surface of sample
Whether electrode is connected after drying with multimeter detecting electrode, between sample is then placed on the electrode of instrument, then 20 DEG C-
Material is tested using impedance analyzer in the range of 150 DEG C, completes the dielectric properties test of composite material.
A kind of advantageous effect of barium titanate/polyvinylidene fluoride composite material proposed by the present invention has：
1, hydroxylating processing is carried out to the surface of BT particles using aqueous hydrogen peroxide solution, by carrying out FTIR tables to particle
Sign, finds to be implicitly present in a large amount of hydroxyl on the surface of particle, and the reaction is simply present in the surface of BT particles, and XRD is surveyed
BT crystal structures do not change after face take temperature before modified；
2, barium titanate/Kynoar shows the dielectric constant and fissipation factor and higher breakdown strength of very little,
And the cross-section photographs of the SEM of composite material also turn out BT particles, and there are preferable associativities with PVDF matrixes；
3, barium titanate/polyvinylidene fluoride composite material shows preferable frequency stability and temperature stability, these
Performance is equally that its composite inner filler is caused with the preferable associativity of matrix, these performances assign barium titanate/poly- inclined fluorine
Ethylene composite material has preferable actual application value.
The invention also provides a kind of preparation method and test method of barium titanate/polyvinylidene fluoride composite material, operations
Simply, required material is simple and easy to get, is worthy to be popularized.
Specific implementation mode
The present invention is made further to explain with reference to specific embodiment.
Embodiment one
A kind of preparation method of barium titanate/polyvinylidene fluoride composite material proposed by the present invention, includes the following steps：
S1, the BT particles for weighing 15g measure the aqueous hydrogen peroxide solution of 350ml, spare；
S2, by step S1 BT particles and aqueous hydrogen peroxide solution be added in three-necked flask, ultrasonic disperse 20min；
S3, on the basis of step S2, three-necked flask is put into 106 DEG C of sand-baths, mechanic whirl-nett reaction 6h；
S4, it will be filtered after the suspension cooling obtained by step S3, clear water be used in combination repeatedly to wash；
S5, the product obtained by step S4 is placed into 80 DEG C of baking oven and is dried, white is finally obtained after being ground with mortar
Powder；
S6, by obtained by step S5 appropriate white BT powder and DMF solution be added in there-necked flask, ultrasonic disperse 30min
Left and right；
S7, on the basis of step S6, three-necked flask is put into 70 DEG C of water-bath；
Suitable PVDF powder is added in S8, the three-necked flask into step S7,2h postcoolings that the reaction was continued are obtained to room temperature
To thick white shape liquid；
S9, the thick white shape liquid obtained by step S8 is unfolded on a glass, glass plate, which is then put into vacuum, dries
It is vacuumized in case, the bubble in removing system；
S10, on the basis of step S9, glass plate is put into convection oven and is dried at 80 DEG C, obtain white answer
Close film.
Preferably, the aqueous hydrogen peroxide solution concentration 30%, and the aqueous hydrogen peroxide solution specification is analysis
It is pure.
Preferably, the BT particles are nanoscale barium titanate or micron order barium titanate.
Its test method, includes the following steps：
S1, BT powder after tabletting, is changed it with Nexus670 type Fourier transformation infrared spectrometers together with potassium bromide
It learns structure to be analyzed, completes to test the FTIR of BT powder；
S2, emit X-ray using the K α targets of Cu, wavelength is the monochromatic x-rays of 0.154nm, right in the range of 10 ° -90 °
BT powder samples are scanned, and complete the XRD tests of BT powder；
S3, the BT powder prepared among absolute ethyl alcohol is subjected to ultrasonic disperse, appropriate suspension is taken to be added drop-wise to carbon film
On, it is observed using TEM after it is air-dried, completes the TEM tests of BT powder；
S4, composite sample is put among liquid nitrogen quench it is disconnected, then to its surface metal spraying after, carried out using SEM
Observation is completed to test the SEM of composite material；
S5, it between composite sample is placed on two sphere poles impregnated by silicone oil, using direct current, is rising
It pressurizes to sample under the speed that pressure rate is about 100V/s, until sample breakdown position, the thickness phase of each test sample
Closely, it takes 20 points to test in each sample, completes the test of composite material breakdown strength；
S6, composite sample 3-5mg is taken, placed it in aluminium crucible, in the atmosphere for the N2 that flow velocity is 50ml/min
Under, it is warming up at 220 DEG C and keeps the temperature 2min with the thermal history of material removal, then cooled down with the rate of temperature fall of 10 DEG C/min, and remember
The calorific value variation for recording material, completes the hot property characterization test of composite material；
S7, composite sample is cut into the square that the length of side is about 1cm, then coats silver in the upper and lower surface of sample
Whether electrode is connected after drying with multimeter detecting electrode, between sample is then placed on the electrode of instrument, then 20 DEG C-
Material is tested using impedance analyzer in the range of 150 DEG C, completes the dielectric properties test of composite material.
A kind of barium titanate/polyvinylidene fluoride composite material proposed by the present invention, shows dielectric constant and the loss of very little
The factor and higher breakdown strength show that preferable frequency stability and temperature stability, actual application value are high；
It is easy to operate the invention also provides a kind of preparation method and test method of barium titanate/polyvinylidene fluoride composite material, it is required
Material is simple and easy to get, is worthy to be popularized.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of preparation method of barium titanate/polyvinylidene fluoride composite material, which is characterized in that include the following steps：
S1, the BT particles for weighing 15g measure the aqueous hydrogen peroxide solution of 350ml, spare；
S2, by step S1 BT particles and aqueous hydrogen peroxide solution be added in three-necked flask, ultrasonic disperse 20min；
S3, on the basis of step S2, three-necked flask is put into 106 DEG C of sand-baths, mechanic whirl-nett reaction 6h；
S4, it will be filtered after the suspension cooling obtained by step S3, clear water be used in combination repeatedly to wash；
S5, the product obtained by step S4 is placed into 80 DEG C of baking oven and is dried, white powder is finally obtained after being ground with mortar；
S6, by obtained by step S5 appropriate white BT powder and DMF solution be added in there-necked flask, ultrasonic disperse 30min or so；
S7, on the basis of step S6, three-necked flask is put into 70 DEG C of water-bath；
Suitable PVDF powder is added in S8, the three-necked flask into step S7,2h postcoolings that the reaction was continued to room temperature obtain white
Color viscous liquid；
S9, the thick white shape liquid obtained by step S8 is unfolded on a glass, then glass plate is put into vacuum drying oven
It vacuumizes, the bubble in removing system；
S10, on the basis of step S9, glass plate is put into convection oven and is dried at 80 DEG C, obtain white THIN COMPOSITE
Film.
2. a kind of preparation method of barium titanate/polyvinylidene fluoride composite material according to claim 1, which is characterized in that
The aqueous hydrogen peroxide solution concentration 30%, and the aqueous hydrogen peroxide solution specification is that analysis is pure.
3. a kind of preparation method of barium titanate/polyvinylidene fluoride composite material according to claim 1, which is characterized in that
The BT particles are nanoscale barium titanate or micron order barium titanate.
4. a kind of test method of barium titanate/polyvinylidene fluoride composite material, which is characterized in that include the following steps：
S1, BT powder after tabletting, is tied its chemistry with Nexus670 types Fourier transformation infrared spectrometer together with potassium bromide
Structure is analyzed, and completes to test the FTIR of BT powder；
S2, emit X-ray using the K α targets of Cu, wavelength is the monochromatic x-rays of 0.154nm, to BT powder in the range of 10 ° -90 °
Last sample is scanned, and completes the XRD tests of BT powder；
S3, the BT powder prepared among absolute ethyl alcohol is subjected to ultrasonic disperse, appropriate suspension is taken to be added drop-wise on carbon film,
It is observed using TEM after it is air-dried, completes the TEM tests of BT powder；
S4, composite sample is put among liquid nitrogen quench it is disconnected, then to its surface metal spraying after, observed using SEM,
It completes to test the SEM of composite material；
S5, between composite sample is placed on two sphere poles impregnated by silicone oil, using direct current, in boosting speed
It pressurizes to sample under the speed that rate is about 100V/s, until sample breakdown position, the thickness of each test sample is close, right
It takes 20 points to be tested in each sample, completes the test of composite material breakdown strength；
S6, composite sample 3-5mg is taken, placed it in aluminium crucible, under the atmosphere for the N2 that flow velocity is 50ml/min, risen
Then temperature is cooled down, and recording materials to heat preservation 2min at 220 DEG C with the thermal history of material removal with the rate of temperature fall of 10 DEG C/min
Calorific value variation, complete the hot property characterization test of composite material；
S7, composite sample is cut into the square that the length of side is about 1cm, then coats silver electricity in the upper and lower surface of sample
Whether pole is connected after drying with multimeter detecting electrode, between sample is then placed on the electrode of instrument, then at 20 DEG C -150
Material is tested using impedance analyzer in the range of DEG C, completes the dielectric properties test of composite material.
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| CN109187845A (en) * | 2018-11-14 | 2019-01-11 | 江西省药品检验检测研究院 | The simple and easy method of aluminium foil and plating aluminium material in a kind of identification composite membrane |
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| CN102936351A (en) * | 2012-10-30 | 2013-02-20 | 同济大学 | Method for preparing polyvinylidene fluoride (PVDF)/barium titanate (BT) composite membrane materials |
| CN107163293A (en) * | 2017-07-04 | 2017-09-15 | 北京科技大学 | It is a kind of to improve dielectric composite breakdown strength and the method for energy storage density |
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| CN102936351A (en) * | 2012-10-30 | 2013-02-20 | 同济大学 | Method for preparing polyvinylidene fluoride (PVDF)/barium titanate (BT) composite membrane materials |
| CN107163293A (en) * | 2017-07-04 | 2017-09-15 | 北京科技大学 | It is a kind of to improve dielectric composite breakdown strength and the method for energy storage density |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187845A (en) * | 2018-11-14 | 2019-01-11 | 江西省药品检验检测研究院 | The simple and easy method of aluminium foil and plating aluminium material in a kind of identification composite membrane |
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