CN109942996A - A kind of composite material and preparation method thereof and composite material - Google Patents
A kind of composite material and preparation method thereof and composite material Download PDFInfo
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- 239000002131 composite material Substances 0.000 title claims abstract description 79
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 238000010041 electrostatic spinning Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 33
- 239000011159 matrix material Substances 0.000 claims abstract description 27
- 239000012528 membrane Substances 0.000 claims abstract description 25
- 230000004048 modification Effects 0.000 claims abstract description 15
- 238000012986 modification Methods 0.000 claims abstract description 15
- 239000010954 inorganic particle Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 229920000642 polymer Polymers 0.000 claims description 47
- 239000000178 monomer Substances 0.000 claims description 27
- 229920001577 copolymer Polymers 0.000 claims description 26
- 239000002245 particle Substances 0.000 claims description 22
- 239000002904 solvent Substances 0.000 claims description 21
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 18
- 238000007731 hot pressing Methods 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 15
- 239000002243 precursor Substances 0.000 claims description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- -1 perfluoroethylene-propylene Chemical group 0.000 claims description 12
- 239000002033 PVDF binder Substances 0.000 claims description 11
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 11
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 229910052582 BN Inorganic materials 0.000 claims description 8
- 229910052454 barium strontium titanate Inorganic materials 0.000 claims description 8
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims description 8
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 7
- 238000009987 spinning Methods 0.000 claims description 7
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 6
- 229910002113 barium titanate Inorganic materials 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 239000007822 coupling agent Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 4
- 239000005977 Ethylene Substances 0.000 claims description 4
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 238000000498 ball milling Methods 0.000 claims description 4
- 229960003638 dopamine Drugs 0.000 claims description 4
- 229910052731 fluorine Inorganic materials 0.000 claims description 4
- 239000011737 fluorine Substances 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- 239000010445 mica Substances 0.000 claims description 4
- 229910052618 mica group Inorganic materials 0.000 claims description 4
- 239000007800 oxidant agent Substances 0.000 claims description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 4
- MIZLGWKEZAPEFJ-UHFFFAOYSA-N 1,1,2-trifluoroethene Chemical group FC=C(F)F MIZLGWKEZAPEFJ-UHFFFAOYSA-N 0.000 claims description 3
- QMIWYOZFFSLIAK-UHFFFAOYSA-N 3,3,3-trifluoro-2-(trifluoromethyl)prop-1-ene Chemical compound FC(F)(F)C(=C)C(F)(F)F QMIWYOZFFSLIAK-UHFFFAOYSA-N 0.000 claims description 3
- JQJIWDQOYRQQKE-UHFFFAOYSA-N C(=C)F.[Cl] Chemical compound C(=C)F.[Cl] JQJIWDQOYRQQKE-UHFFFAOYSA-N 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000013019 agitation Methods 0.000 claims description 3
- 150000001336 alkenes Chemical class 0.000 claims description 3
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 3
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 125000003700 epoxy group Chemical group 0.000 claims description 3
- 125000004185 ester group Chemical group 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical compound FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 claims description 3
- 239000003607 modifier Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 claims 1
- 150000002576 ketones Chemical class 0.000 claims 1
- 230000001590 oxidative effect Effects 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims 1
- 238000004146 energy storage Methods 0.000 abstract description 27
- 239000000463 material Substances 0.000 abstract description 26
- 230000003993 interaction Effects 0.000 abstract description 8
- 230000007547 defect Effects 0.000 abstract description 5
- 239000000945 filler Substances 0.000 abstract description 4
- 238000005054 agglomeration Methods 0.000 abstract description 3
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- 238000009826 distribution Methods 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000012776 electronic material Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 abstract 1
- 150000005846 sugar alcohols Polymers 0.000 description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 12
- 230000005684 electric field Effects 0.000 description 12
- 239000003990 capacitor Substances 0.000 description 11
- 239000002585 base Substances 0.000 description 10
- 239000000919 ceramic Substances 0.000 description 10
- 239000000835 fiber Substances 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 5
- 239000004926 polymethyl methacrylate Substances 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000002604 ultrasonography Methods 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000005621 ferroelectricity Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229910052901 montmorillonite Inorganic materials 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- PKBXXIJDESMGDN-UHFFFAOYSA-N 1-fluorobuta-1,2,3-triene Chemical group FC=C=C=C PKBXXIJDESMGDN-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- 229920001780 ECTFE Polymers 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 241000446313 Lamella Species 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 229920007962 Styrene Methyl Methacrylate Polymers 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N alpha-methacrylic acid Natural products CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- ADFPJHOAARPYLP-UHFFFAOYSA-N methyl 2-methylprop-2-enoate;styrene Chemical compound COC(=O)C(C)=C.C=CC1=CC=CC=C1 ADFPJHOAARPYLP-UHFFFAOYSA-N 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920002454 poly(glycidyl methacrylate) polymer Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- MERJTCXDDLWWSK-UHFFFAOYSA-N 1-methylpyrrole pyrrolidin-2-one Chemical compound CN1C=CC=C1.N1C(CCC1)=O MERJTCXDDLWWSK-UHFFFAOYSA-N 0.000 description 1
- QZPSOSOOLFHYRR-UHFFFAOYSA-N 3-hydroxypropyl prop-2-enoate Chemical compound OCCCOC(=O)C=C QZPSOSOOLFHYRR-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 241000283014 Dama Species 0.000 description 1
- WTDRDQBEARUVNC-UHFFFAOYSA-N L-Dopa Natural products OC(=O)C(N)CC1=CC=C(O)C(O)=C1 WTDRDQBEARUVNC-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- LZFMACRHJXVTIV-UHFFFAOYSA-N [F].C(=C)Cl Chemical compound [F].C(=C)Cl LZFMACRHJXVTIV-UHFFFAOYSA-N 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
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- 239000003513 alkali Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
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- JNSGIVNNHKGGRU-JYRVWZFOSA-N diethoxyphosphinothioyl (2z)-2-(2-amino-1,3-thiazol-4-yl)-2-methoxyiminoacetate Chemical compound CCOP(=S)(OCC)OC(=O)C(=N/OC)\C1=CSC(N)=N1 JNSGIVNNHKGGRU-JYRVWZFOSA-N 0.000 description 1
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- 239000004811 fluoropolymer Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 1
- 229960004502 levodopa Drugs 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000002070 nanowire Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920000131 polyvinylidene Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
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Abstract
The application belongs to technical field of electronic materials, more particularly to a kind of composite material and preparation method thereof and composite material.In multi-element composite material, due to the presence of intermolecular force or interface interaction, easily formation agglomeration, material is hardly formed homogeneous structural.In defect or interface non-uniform electric, its disruptive field intensity is caused sharply to decline；The inhomogenous composite material of filler distribution is easily broken off, it is also difficult to which extensive film forming is not suitable for industrial production technology field.This application provides a kind of composite material and preparation method thereofs, and described method includes following steps: polymeric matrix blending and modifying, surface of inorganic particles functional modification, and film is made in the prefabricated film forming of electrostatic spinning, the stretching of prefabricated membrane.The composite material of the application preparation has compared with high energy storage density and high-energy release efficiency, can be widely applied to hybrid-electric car, high power pulse and electromagnetic launch equipment, military project national defence, smart electric grid system field.
Description
Technical field
The application belongs to technical field of electronic materials, more particularly to a kind of composite material and preparation method thereof and composite material.
Background technique
Capacitor, usually referred to as its ability for accommodating charge is capacitor.Capacitor is as its name suggests ' container of dress electricity ',
It is a kind of device for accommodating charge.Capacitor is one of the electronic component largely used in electronic equipment, is widely used in circuit
In resonant tank, energy conversion, control etc., usually by one or more Material claddings obtain required function capacitor
Device.Develop the low-loss capacitor material of high energy storage to have great importance in hyundai electronics and electric system, especially exist
The fields such as hybrid-electric car, high power pulse and electromagnetic launch equipment, military project national defence, smart electric grid system, which have, widely answers
Use prospect.Compared with traditional chemical battery, high energy-storage capacitor material has the advantages such as quick release electric energy, structure easy-regulating,
Cause special attention.
By the calculation formula U of capacitor material energy storage densitye=1/2 εrε0E2Known to: material needs to have high-dielectric coefficient
(εr), the characteristics such as high breakdown field strength (E) and low energy loss.Traditional polymer or ceramic homogenous material, do not have simultaneously
There is the above characteristic.Usually selecting has high εrCeramics and polymer with high E carry out compound, which is expected to combine
The high ε of the tworWith high E, to realize high energy storage density.Kynoar based polyalcohol dielectric constant values (10 with higher
~50) matrix of high energy storage composite, can be used as to reduce the energy loss of itself and improve E by polymer modification,
Such as polymethyl methacrylate (PMMA) can be compatible with PVDF based polyalcohol perfection, and PVDF can be significantly reduced in PMMA
The energy loss that based polyalcohol crystal grain is overturn under the electric field, and then reduce the energy loss of composite material and improve energy storage density；
Inorganic ceramic promotes the ε of composite material since its high dielectric constant can be used as fillerr.Such as nano barium titanate titanate ceramics feature
It is that dielectric constant is up to thousands of, and boron nitride ceramics feature is that resistivity is higher than most of ceramics.As a result, by polymer modification
It is a kind of feasible method of theory that PVDF based polyalcohol is compound with inorganic ceramic, while also becoming the heat of the area research in recent years
One of point.
In multi-element composite material, since intermolecular force or interface interaction etc. easily form agglomeration, material is very
Hardly possible forms uniform structure, this results in material internal performance difference excessive, and defect is excessive.On the one hand in defect or interface portion
Non-uniform electric, ion leakage is led larger, and E sharply declines；On the other hand, the inhomogenous Compound Material Engineering of filler distribution
Can be also bad, this causes the mechanical property of materials poor, is easily broken off, it is also difficult to which extensive film forming is not suitable for industrial production skill
Art field.
Summary of the invention
1. technical problems to be solved
Since intermolecular force or interface interaction etc. easily form agglomeration in multi-element composite material, material is difficult
Homogeneous structural is formed, this results in material internal performance difference excessive, and defect is excessive.On the one hand in defect or interface portion electric field
It is unevenly distributed, ion leakage is led larger, and E sharply declines；On the other hand, the inhomogenous composite materials property of filler distribution
Bad, this causes the mechanical property of materials poor, is easily broken off, it is also difficult to which extensive film forming is not suitable for industrial production technology neck
Domain, this application provides a kind of composite material and preparation method thereof and composite materials.
2. technical solution
To achieve the above object, this application provides a kind of composite material and preparation method thereof, the method includes as follows
Step:
A. polymeric matrix blending and modifying: being added 1~10 part of Kynoar base co-polymer in flask, be added 100 parts it is good
After the dissolution of solvent strong stirring, 0.1~2 part of functional monomer polymer is added, uniform mixed with polymers matrix is stirred to get
Solution；
B. it surface of inorganic particles functional modification: prepares by 100 parts of solvents, 0.1~10 part of surface modifier and 0.5~10
It is small to be stirred to react 1~48 under the conditions of pH value is 2~6 at room temperature for inorganic particulate composition mixture turbid of the part through micronization processes
When, modified particle is obtained after washing, purifying, drying process；
C. 0.1~10% mixed with polymers matrix the prefabricated film forming of electrostatic spinning: is added into mixed with polymers Matrix Solution
The modified particle of mass ratio was uniformly mixed through ultrasonic agitation 1~24 hour after being mixed and electrostatic spinning precursor liquid is made；It will be quiet
Electrostatic spinning prefabricated membrane is made in Electrospun precursor liquid；
D. prefabricated membrane heating, melting, pressure the hot pressing of prefabricated membrane: are carried out at 100~300 DEG C to electrostatic spinning prefabricated membrane
Hot pressing film is made after system, cooling treatment；
E. the stretching of hot pressing film: stretching is carried out to hot pressing film, film is made.
Optionally, the good solvent in the step a includes acetone, ethyl acetate, n,N-Dimethylformamide, N- methyl pyrrole
Pyrrolidone, tetrahydrofuran or dimethyl sulfoxide.
Optionally, Kynoar base co-polymer and functional monomer mixed with polymers method include good in the step a
Mixing is dissolved in solvent, ball milling mixing and melting are stirred.
Optionally, the raw material of Kynoar base co-polymer is Kynoar based copolymer in the step a, described poly-
Vinylidene based copolymer starting monomer is vinylidene, vinyl fluoride, trifluoro-ethylene, chlorine vinyl fluoride, chlorotrifluoroethylene, tetrafluoro second
One or more of alkene, hexafluoropropene, perfluoroethylene-propylene (copolymer), hexafluoro-isobutene, perfluoroalkyl vinyl ether and ethylene.
Optionally, functional monomer polymer raw material is functional monomer in the step a, and the functional monomer is containing double
One or more of key, epoxy group, ester group, hydroxyl, carbonyl, amino, phenyl ring and carboxyl.
Optionally, surface of inorganic particles functional modification includes using physical/chemical method to inorganic in the step b
Particle is modified, and the method for modifying includes that strong acid is modified, strong oxidizer is modified, organo-silicon coupling agent is modified or dopamine
And its it is derivative modified.
Optionally, in the step b inorganic particulate be montmorillonite, mica, boron nitride, aluminium oxide, silica, titanium oxide,
Silicon carbide, silicon nitride, barium titanate or barium strontium titanate.
Optionally, in the step b micronization processes of inorganic particulate include high-power ultrasonic removing, ball mill grinding refinement and
Physical grinding.
Optionally, electrostatic spinning prefabricated membrane includes single needle spinneret film in the step c, coaxial syringe needle spinneret film and positive and negative
High pressure double needle spinneret film, the electrostatic spinning prefabricated membrane is with a thickness of 1~10 micron.
The application also provides a kind of composite material, and the composite material is composed of the following raw materials in parts by weight:
60~94 parts of Kynoar base co-polymer, 5~20 parts of functional monomer polymer, 1~20 part of inorganic particulate.
3. beneficial effect
Compared with prior art, the beneficial effect of composite material and preparation method thereof and composite material provided by the present application is:
The preparation method of composite material provided by the present application, using Kynoar based polyalcohol as raw material, addition is functional
Monomer-polymer is blended, by being modified to Kynoar based polyalcohol, so that the former polymer crystal grain is in electricity
The dielectric loss overturn off field reduces, and then reduces the energy loss of composite material；Then by itself and inorganic particulate Combined Electrostatic
The prefabricated film forming of spinning；Prefabricated membrane is fixed to final dielectric material through hot-pressing processing and uniaxial or biaxial stretching.By to inorganic
Particle carries out size refinement and surface modification treatment, improves its compatibility between organic polymer matrix, passes through Static Spinning
Silk technique promotes the homogeneity and flexibility of composite material；By hot pressing and stretch processing, not only composite structure may make to cause
Close, strand is orientated, also using the interaction force traction particle filled composite between strand and particle along draw direction
Orientations are carried out, the whole uniformity for improving composite material and pressure-resistant performance are conducive to.The composite material has higher dielectric
Constant and disruptive field intensity, to promote its energy storage density value.Simultaneously as the reduction of polymeric matrix own loss and inorganic grain
The reduction for the leakage electrical conduction current that the evenly dispersed arrangement of son causes, can assign final composite material high energy releasing efficiency.Preparation
Composite material with high energy storage density and high-energy release efficiency.This application involves composite material have high dielectric constant
(8~50) and disruptive field intensity (400~800MV/m).Its energy releasing efficiency is higher, about between 70%~90%, than usual
Similar composite material promotes 30%~50%, and energy storage density is up to 10~20Jm3, more traditional bidirectional stretching polypropylene film
(BOPP) there are nearly ten times of promotions.The composite material of the application preparation has compared with high energy storage density and high-energy release efficiency, can
It is widely used in hybrid-electric car, high power pulse and electromagnetic launch equipment, military project national defence, smart electric grid system field.
Detailed description of the invention
Fig. 1 is the composite material and preparation method thereof flow diagram of the application.
Specific embodiment
Hereinafter, specific embodiment of the reference attached drawing to the application is described in detail, it is detailed according to these
Description, one of ordinary skill in the art can implement the application it can be clearly understood that the application.Without prejudice to the application principle
In the case where, the feature in each different embodiment can be combined to obtain new embodiment, or be substituted certain
Certain features in embodiment, obtain other preferred embodiments.
Existing high energy storage composite carries out straight frequently with PVDF based polyalcohol matrix and the ferroelectric ceramics of high dielectric constant
Connect blending preparation.By research in recent years, which achieves greater advance in high energy storage field, is such as prepared for having
Compared with high energy storage density (20~30J/cm3) composite material；However, the compound system is due to using the PVDF with ferroelectric properties
Based polyalcohol and ferroelectric ceramics particle are component, usual energy loss with higher, and ceramic content is high and easy to reunite,
It is hardly formed than more uniform structure, this is resulted in, and material mechanical performance is poor, and the demand of high-performance energy-storage capacitor is far not achieved.
This is because two phase component own electric field polarization characteristics cause, ferroelectricity PVDF based polyalcohol is lost with biggish dielectric relaxor,
And the difference of electrical property but also non-uniform electric in composite material, lead larger by ion leakage between two-phase, these are resulted in
The loss value of final material is higher.High energy loss not only makes the reduction of dielectric energy storage efficiency, can also be converted into heat and break
Bad medium makes its failure.
Electrostatic spinning is a kind of special fiber fabrication process, and solution carries out jet spinning in strong electrical field, is made in electric field
Under, the drop at syringe needle can be become cone from spherical shape, and extend to obtain fiber filaments from conical tip.This mode can be with
The polymer filaments of nanometer grade diameter are produced, carry out electrostatic spinning if nano inoganic particle mixed with polymer solution,
Inorganic particulate can be formed together nano-scale filaments with polymer, this will substantially improve the dispersion of inorganic particulate in a polymer matrix
Situation, and the direction for adjusting filament can be such that inorganic particulate order arranges, and can thus prepare high energy storage low-loss
Homogeneity composite material.
Blending and modifying exactly mixes two kinds of polymer, and two kinds of synergistic effects are to show excellent performance.
So-called ferroelectric material refers to that the crystal structure of material just has spontaneous polarization phenomenon when external electric field is not added, from
Sending out direction polarized can be inverted or be redirected by extra electric field.This characteristic of ferroelectric material is referred to as " ferroelectricity ".
Relaxation is exactly that material response outer field action needs a period of time, and relaxation ferroelectric is exactly from added electric field to polarization direction
Invert or redirect material for some time.
Electrostatic spinning is exactly by the special shape of fluid electrostatic atomization, and the substance that atomization is divided out at this time is not small liquid
Drop, but the small line stream of polymer, are solidified into fiber after reception device is moved under high voltage electric field.Electrostatic spinning is a kind of spy
Different fiber fabrication process, polymer solution or melt carry out jet spinning in strong electrical field.Under electric field action, at syringe needle
Drop can be become conical (i.e. " taylor cone ") from spherical shape, and extend to obtain fiber filaments from conical tip.This mode can be with
Produce the polymer filaments of nanometer grade diameter.
Good solvent: solvent is divided into good molten by Flory according to the situation that interacts between solvent molecule and polymer segment
Agent, poor solvent and theta solvent.So-called good solvent refers to that interaction is greater than segment-chain between solvent molecule and polymer segment
Section interaction, so that high polymer long chain is in extended position in the solution, exclusion volume increases, and this solvent becomes good solvent,
This solution becomes good solution.
Referring to Fig. 1, the application provides a kind of composite material and preparation method thereof, and described method includes following steps:
A. polymeric matrix blending and modifying: being added 1~10 part of Kynoar base co-polymer in flask, be added 100 parts it is good
After the dissolution of solvent strong stirring, 0.1~2 part of functional monomer polymer is added, uniform mixed with polymers matrix is stirred to get
Solution；
B. it surface of inorganic particles functional modification: prepares by 100 parts of solvents, 0.1~10 part of surface modifier and 0.5~10
It is small to be stirred to react 1~48 under the conditions of pH value is 2~6 at room temperature for inorganic particulate composition mixture turbid of the part through micronization processes
When, modified particle is obtained after washing, purifying, drying process；
C. 0.1~10% mixed with polymers matrix the prefabricated film forming of electrostatic spinning: is added into mixed with polymers Matrix Solution
The modified particle of mass ratio was uniformly mixed through ultrasonic agitation 1~24 hour after being mixed and electrostatic spinning precursor liquid is made；It will be quiet
Electrostatic spinning prefabricated membrane is made in Electrospun precursor liquid；
D. prefabricated membrane heating, melting, pressure the hot pressing of prefabricated membrane: are carried out at 100~200 DEG C to electrostatic spinning prefabricated membrane
Hot pressing film is made after system, cooling treatment；
E. the stretching of hot pressing film: stretching is carried out to hot pressing film, film is made.
It is mixed for example, Kynoar base co-polymer stirs 24 hours with functional monomer polymer at 50 DEG C.It is quiet
Electrospun precursor liquid removes static spinning membrane after electrostatic spinning 12h at room temperature in 15kV voltage, through hot pressing under 180 DEG C and 10MPa
The hot pressing film of mixed with polymers matrix and inorganic particulate is made after 1h.Hot pressing film, which stretch, is made film, and film here is
Capacitor dielectric film is obtained by sizing, and capacitor composite material film is with a thickness of 1~100 micron.
Further, the good solvent in the step a includes acetone, ethyl acetate, n,N-Dimethylformamide, N- methyl
Pyrrolidones, tetrahydrofuran or dimethyl sulfoxide.
Further, Kynoar base co-polymer with functional monomer mixed with polymers method includes in the step a
Mixing is dissolved in good solvent, ball milling mixing and melting are stirred.
Further, the raw material of Kynoar base co-polymer is Kynoar based copolymer in the step a, described
Kynoar based copolymer starting monomer is vinylidene, vinyl fluoride, trifluoro-ethylene, chlorine vinyl fluoride, chlorotrifluoroethylene, tetrafluoro
One or more of ethylene, hexafluoropropene, perfluoroethylene-propylene (copolymer), hexafluoro-isobutene, perfluoroalkyl vinyl ether and ethylene.
These monomers are made by homopolymerization or copolyreaction, and reacting typical copolymers obtained includes poly- (vinylidene-three
Fluorine vinyl chloride) copolymer, poly- (vinylidene-trifluoro-ethylene-chlorotrifluoroethylene) copolymer, poly- (vinylidene-trifluoro-ethylene-
Chlorine vinyl fluoride) copolymer, poly- (biasfluoroethylene-hexafluoropropylene) copolymer.The fluorine polymerization that fluorochemical monomer polymerize usually has
Biggish dielectric constant (10~50) shows high dielectric constant, the ferroelectricity or relaxation ferroelectric of high dielectric loss.It is usually intended to
Fluoropolymer is grafted, is blended, is eliminated etc. and it is modified, being made it have more extensively and superior performance.
Further, functional monomer polymer raw material is functional monomer in the step a, and the functional monomer contains
One or more of double bond, epoxy group, ester group, hydroxyl, carbonyl, amino, phenyl ring and carboxyl.
Such as (methyl) acrylic acid, acrylamide, styrene, styrene-methyl methacrylate resin (MS), (methyl)
The monomers such as hydroxypropyl acrylate, glycidyl methacrylate and its derivative.The polymer of this monomer synthesis has function
Energy property group, other polymers is modified usually as additive, such as methyl methacrylate can be with PVDF based polyalcohol
It is perfect compatible, and the energy loss that PVDF based polyalcohol crystal grain is overturn under the electric field can be significantly reduced in it, and then reduces multiple
Condensation material can be lost and improve energy storage density.
Further, surface of inorganic particles functional modification includes using physical/chemical method to nothing in the step b
Machine particle is modified, and the method for modifying includes that strong acid is modified, strong oxidizer is modified, organo-silicon coupling agent is modified or DOPA
Amine and its derivative modified.
Surface of inorganic particles can use method of modifying physically or chemically to promote its boundary between polymeric matrix
Face compatibility, method of modifying include but is not limited to: strong acid treatment, such as sulfuric acid, hydrochloric acid, nitric acid；Strong oxidizer processing, such as Gao Meng
Sour potassium, hydrogen peroxide etc.；Organo-silicon coupling agent processing, such as KH550, KH560, KH570 series, A-151, A-171 series；Metatitanic acid
Ester coupling agent series etc.；Dopamine and its derivative processing, such as N- (3,4- dihydroxy benzenes ethyl) Methacrylamide (DAMA)
Deng.Interaction force between the modified inorganic particulate in surface and polymeric matrix can be improved, typical as inorganic
O that particle surface introduces, N element can form Hyarogen-bonding between matrix H element, and surface of inorganic particles introduces
Strong dipolar interaction power can be generated between functional group and polymeric groups polar group, be conducive to subsequent composite material
Preparation.
Further, inorganic particulate is montmorillonite, mica, boron nitride, aluminium oxide, silica, oxidation in the step b
Titanium, silicon carbide, silicon nitride, barium titanate or barium strontium titanate.
With high dielectric constant, high-insulativity is spherical, two-dimensional sheet or linear structure.Wherein silicon carbide, silicon nitride and titanium
Sour barium has the spherical of high dielectric constant；Montmorillonite, mica, boron nitride particles have multilayer chip structure；Aluminium oxide, oxidation
Silicon, titanium oxide and barium strontium titanate particle have linear or fibrous structure.The pattern of inorganic particulate includes but is not limited to sheet, layer
Shape, linear, threadiness；The thickness of inorganic particulate includes but is not limited to millimeter, micron, nanometer etc..Inorganic particulate can be by upper
State one or more of variety classes or pattern particle composition.
Further, the micronization processes of inorganic particulate include high-power ultrasonic removing, ball mill grinding refinement in the step b
And physical grinding.
Spherical inorganic particle stock size is bigger, and such as tens to several hundred microns, and ball mill grinding refinement and physics can be used
Grinding carries out micronization processes；Flaky inorganic particle usually has certain thickness, and such as tens to several hundred microns, can be used physics/
Chemical method removes it, so that its thickness is decreased to 10~100 nanometers, typical stripping means includes: ultrasound
Method, alkali process method, mechanical stripping method；Inorganic particulate pattern is spherical shape, fiber, lamella or block.Fibrous inorganic particulate is past
It is past that fibre length is controlled by mechanical shearing.The inorganic particulate spherical shape partial size of the micronization processes is 1~100 nanometer, lamella
With a thickness of 1~10 nanometer, fibre length is 1~100 micron.
Optionally, electrostatic spinning prefabricated membrane includes single needle spinneret film in the step c, coaxial syringe needle spinneret film and positive and negative
High pressure double needle spinneret film, the electrostatic spinning prefabricated membrane is with a thickness of 1~10 micron.
The application also provides a kind of composite material, and the composite material is composed of the following raw materials in parts by weight:
60~94 parts of Kynoar base co-polymer, 5~20 parts of functional monomer polymer, 1~20 part of inorganic particulate.
Reach low-loss mixed matrix using functional monomer polymer and the copolymer blended modification of polyvinylidene fluoride, with
And keep three evenly dispersed by electrostatic spinning technique, it can prepare and be damaged compared with high breakdown field strength, high energy storage density and low energy
The homogeneity composite material of consumption.
Embodiment one
(a) 10mL dimethylformamide is added into the vial of 20mL, the poly- (vinylidene-trifluoro second of 1g is then added
Alkene) and 0.1g styrene-methyl methacrylate resin (MS), it is molten to obtain uniform mixed matrix by strong stirring 6h at 45 DEG C
Liquid；
(b) into 200mL beaker be added 0.1g ball milling refinement barium titanate (BT), 0.3g dopamine, 0.1g catalyst and
150mL water stirs for 24 hours at room temperature, and modified BT particle is obtained by filtration in washing；
(c) the modified BT particle of 0.1g and 10mL acetone are sequentially added in (a) vial, is fabricated to after ultrasound 1h at room temperature
Electrostatic spinning precursor liquid, by precursor liquid in 15kV voltage, electrostatic spinning 8h obtains electrostatic spinning prefabricated membrane at room temperature, dry hot pressing
After obtain the high uniform composite material of energy storage low-loss type.
(d) composite material film base-material is placed in stretcher, carries out two-way drawing under certain temperature, certain draw ratio
It stretches, 20 microns of thick composite material films is made.
Embodiment two
(a) 10mL dimethylformamide is added into the vial of 20mL, poly- (the inclined fluorine second of 1g for removing impurity is then added
Alkene-trifluoro-ethylene-chlorotrifluoroethylene) and 0.1g polymethyl methacrylate (PMMA), strong stirring 6h is obtained at 45 DEG C
Even mixed matrix solution；
(b) it then prepares by 20mL water, 0.1g barium strontium titanate (BST) nano wire, 0.3g silane coupling agent, 3ml glacial acetic acid
With the mixture solution of 5mL hydrogen peroxide composition, reaction 48h purification process obtains the modification BST particle of the base containing amino functional；
(c) the modified BST particle of 0.1g and 10mL acetone are sequentially added in (a) vial, is made after ultrasound 1h at room temperature
At electrostatic spinning precursor liquid, by precursor liquid in 15kV voltage, electrostatic spinning 8h obtains electrostatic spinning prefabricated membrane, dry heat at room temperature
The high uniform composite material of energy storage low-loss is obtained after pressure.
(d) composite material film base-material is placed in stretcher, carries out two-way drawing under certain temperature, certain draw ratio
It stretches, 20 microns of thick composite material films is made.
Embodiment three
A) 10mL dimethylformamide is added into the vial of 20mL, poly- (the inclined fluorine second of 1g for removing impurity is then added
Alkene-hexafluoropropene) and 0.1g poly (glycidyl methacrylate) (PGMA), strong stirring 6h is uniformly mixed at 45 DEG C
Close Matrix Solution；
(b) 0.1g boron nitride (BN) is added into 200mL beaker, centrifuging and taking supernatant mistake after ultrasound 8h under 1200W power
Filter obtains the boron nitride of removing refinement, then prepares by 100mL water, the BN nanometer sheet of 0.05g removing refinement, 10mL nitric acid solution
With 50mL water, react at 60 DEG C for 24 hours, hydroxyl modification BN nanometer sheet is obtained by filtration in washing；
(c) the modified BN nanometer sheet of 0.1g and 10mL acetone are sequentially added in (a) vial, is made after ultrasound 1h at room temperature
At electrostatic spinning precursor liquid, by precursor liquid in 15kV voltage, electrostatic spinning 8h obtains electrostatic spinning prefabricated membrane, dry heat at room temperature
The high uniform composite material of energy storage low-loss type is obtained after pressure.
(d) composite material film base-material is placed in stretcher, carries out two-way drawing under certain temperature, certain draw ratio
It stretches, 20 microns of thick composite material films is made.
The energy-storage property comparison of composite material in 1 embodiment of table
A: test condition, 450MV/m.
Can be obtained by table 1: this application involves composite material have high dielectric constant (8~50) and disruptive field intensity (400~
800MV/m).Its energy releasing efficiency is higher, about between 70%~90%, 30% is promoted than usual similar composite material~
50%, energy storage density is up to 10~20Jm3, more traditional bidirectional stretching polypropylene film (BOPP) has nearly ten times of promotions.The application
The composite material of preparation has compared with high energy storage density and high-energy release efficiency, can be widely applied to hybrid-electric car, height
Power pulse and electromagnetic launch equipment, military project national defence, smart electric grid system field.
The preparation method of composite material provided by the present application, using Kynoar based polyalcohol as raw material, addition is functional
Monomer-polymer is blended, by being modified to Kynoar based polyalcohol, so that the former polymer crystal grain is in electricity
The dielectric loss overturn off field reduces, and then reduces capable of being lost for composite material；Then it is spun with inorganic particulate Combined Electrostatic
The prefabricated film forming of silk；Prefabricated membrane uniaxial or biaxial stretching is fixed to dielectric material.By to inorganic particulate carry out size refinement and
Surface treatment, improves its compatibility between mixed matrix, and the homogeneity and flexibility of composite material are promoted by electrostatic spinning；
By stretch processing, composite material strand not only may make to be orientated, also using the effect between strand and particle
Power draws two-dimensional particles and carries out orientations along draw direction, is conducive to the whole uniformity and resistance to pressure that improve composite material
Energy.The composite material has high dielectric constant and disruptive field intensity, so that its energy storage density value is promoted, simultaneously as polymer
The reduction for the leakage electrical conduction current that the reduction of matrix own loss and the evenly dispersed arrangement of inorganic particulate cause can assign final compound
The high energy releasing efficiency of material.Prepare the composite material with high energy storage density and high-energy release efficiency.
Although the application is described above by referring to specific embodiment, one of ordinary skill in the art are answered
Work as understanding, in principle disclosed in the present application and range, many modifications can be made for configuration disclosed in the present application and details.
The protection scope of the application is determined by the attached claims, and claim is intended to technical characteristic in claim
Or range is included whole modifications.
Claims (10)
1. a kind of composite material and preparation method thereof, it is characterised in that: described method includes following steps:
A. polymeric matrix blending and modifying: 1~10 part of Kynoar base co-polymer is added in flask, 100 parts of good solvents are added
After strong stirring dissolution, 0.1~2 part of functional monomer polymer is added, uniform mixed with polymers Matrix Solution is stirred to get；
B. it surface of inorganic particles functional modification: prepares by 100 parts of solvents, 0.1~10 part of surface modifier and 0.5~10 part of warp
The inorganic particulate composition mixture turbid of micronization processes is stirred to react 1~48 hour under the conditions of pH value is 2~6 at room temperature, is passed through
Modified particle is obtained after crossing washing, purifying, drying process；
C. 0.1~10% mixed with polymers substrate quality the prefabricated film forming of electrostatic spinning: is added into mixed with polymers Matrix Solution
The modified particle of ratio was uniformly mixed through ultrasonic agitation 1~24 hour after being mixed and electrostatic spinning precursor liquid is made；By Static Spinning
Electrostatic spinning prefabricated membrane is made in silk precursor liquid；
D. prefabricated membrane heating, melting, compacting, cold the hot pressing of prefabricated membrane: is carried out at 100~200 DEG C to electrostatic spinning prefabricated membrane
But hot pressing film is made after handling；
E. the stretching of hot pressing film: stretching is carried out to hot pressing film, film is made.
2. composite material and preparation method thereof as described in claim 1, it is characterised in that: the good solvent in the step a includes third
Ketone, ethyl acetate, n,N-Dimethylformamide, N-Methyl pyrrolidone, tetrahydrofuran or dimethyl sulfoxide.
3. composite material and preparation method thereof as claimed in claim 2, it is characterised in that: polyvinylidene fluoride is total in the step a
Polymers includes dissolving to mix in good solvent with functional monomer mixed with polymers method, and ball milling mixing and melting are stirred.
4. composite material and preparation method thereof as described in claim 1, it is characterised in that: polyvinylidene fluoride is total in the step a
The raw material of polymers is Kynoar based copolymer, and the Kynoar based copolymer starting monomer is vinylidene, fluorine second
Alkene, trifluoro-ethylene, chlorine vinyl fluoride, chlorotrifluoroethylene, tetrafluoroethene, hexafluoropropene, perfluoroethylene-propylene (copolymer), hexafluoro-isobutene, perfluor
One or more of substituted alkyl vinyl ethers and ethylene.
5. composite material and preparation method thereof as described in claim 1, it is characterised in that: functional monomer polymerize in the step a
Raw material is functional monomer, and the functional monomer contains double bond, epoxy group, ester group, hydroxyl, carbonyl, amino, phenyl ring and carboxylic
One or more of base.
6. composite material and preparation method thereof as described in claim 1, it is characterised in that: surface of inorganic particles function in the step b
Energyization modification includes being modified to inorganic particulate using physical/chemical method, and the method for modifying includes that strong acid is modified, strong
Oxidant is modified, organo-silicon coupling agent is modified or dopamine and its derivative modified.
7. composite material and preparation method thereof as described in claim 1, it is characterised in that: inorganic particulate is to cover to take off in the step b
Soil, mica, boron nitride, aluminium oxide, silica, titanium oxide, silicon carbide, silicon nitride, barium titanate or barium strontium titanate.
8. composite material and preparation method thereof as described in claim 1, it is characterised in that: the refinement of inorganic particulate in the step b
Processing includes that high-power ultrasonic is removed, ball mill grinding refinement and physical grinding.
9. such as composite material and preparation method thereof according to any one of claims 1 to 8, it is characterised in that: electrostatic in the step c
Spinning prefabricated membrane includes single needle spinneret film, coaxial syringe needle spinneret film and positive or negative high voltage double needle spinneret film, the electrostatic spinning
Prefabricated membrane is with a thickness of 1~10 micron.
10. a kind of composite material, it is characterised in that: the composite material is composed of the following raw materials in parts by weight:
60~94 parts of Kynoar base co-polymer, 5~20 parts of functional monomer polymer, 1~20 part of inorganic particulate.
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