CN110437600A - A kind of durable capacitor film and preparation method thereof - Google Patents
A kind of durable capacitor film and preparation method thereof Download PDFInfo
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- CN110437600A CN110437600A CN201910841422.4A CN201910841422A CN110437600A CN 110437600 A CN110437600 A CN 110437600A CN 201910841422 A CN201910841422 A CN 201910841422A CN 110437600 A CN110437600 A CN 110437600A
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- hexagonal boron
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- 239000003990 capacitor Substances 0.000 title claims abstract description 60
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229910052582 BN Inorganic materials 0.000 claims abstract description 33
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000011347 resin Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000006096 absorbing agent Substances 0.000 claims abstract description 13
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 12
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 125000002091 cationic group Chemical group 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- -1 acrylyl Chemical group 0.000 claims description 6
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical compound OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 claims description 6
- 230000035945 sensitivity Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000002745 absorbent Effects 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 3
- 235000019270 ammonium chloride Nutrition 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000005352 clarification Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 3
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000009776 industrial production Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 36
- 239000004417 polycarbonate Substances 0.000 description 15
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 9
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 8
- 239000011159 matrix material Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000012994 photoredox catalyst Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 206010054949 Metaplasia Diseases 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
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000002322 conducting polymer Substances 0.000 description 2
- 229920001940 conductive polymer Polymers 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000011104 metalized film Substances 0.000 description 2
- 230000015689 metaplastic ossification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000001967 plate count agar Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229920006289 polycarbonate film Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000010754 BS 2869 Class F Substances 0.000 description 1
- 229920007019 PC/ABS Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000008064 anhydrides Chemical group 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 150000004651 carbonic acid esters Chemical class 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000009881 electrostatic interaction Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000005501 phase interface Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/14—Organic dielectrics
- H01G4/18—Organic dielectrics of synthetic material, e.g. derivatives of cellulose
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/33—Thin- or thick-film capacitors
-
- 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
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
-
- 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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- 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
- C08J2435/00—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 carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Derivatives of such polymers
- C08J2435/06—Copolymers with vinyl aromatic monomers
-
- 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
- C08J2455/00—Characterised by the use of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08J2423/00 - C08J2453/00
- C08J2455/02—Acrylonitrile-Butadiene-Styrene [ABS] polymers
-
- 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
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
-
- 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
- C08K7/00—Use of ingredients characterised by shape
-
- 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
- C08K9/08—Ingredients agglomerated by treatment with a binding agent
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Materials Engineering (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The present invention provides a kind of durable capacitor film, including the following raw material as mass fraction: 100 parts of PC, 15~28 parts of ABS, 8~20 parts of HDPE, modified 6~25 parts of hexagonal boron nitride, 1~8 part of ultraviolet absorbing agent, 1~3 part of SMA resin.The present invention significantly improves temperature classification, heating conduction, uvioresistant weatherability, chemical corrosion resistance, electrical insulating property and the durability of the capacitor film, and then improves quality, service efficiency and the service life of capacitor.A kind of preparation method of durable capacitor film, comprising the following steps: Step1. prepares modified hexagonal boron nitride；Step2. capacitor film is prepared.The present invention discloses a kind of preparation method of durable capacitor film, easy to operate, suitable large-scale industrial production；Hexagonal boron nitride is modified using non-covalent bond, does not change its space structure, retains its original performance, and whole process is easy to operate, low for equipment requirements, pollution-free；It uses Thickness resolution for 0.01 μm of infrared measuring thickness device, measures the thickness of capacitor film.
Description
Technical field
The invention belongs to capacitor areas, more particularly to a kind of durable capacitor film and preparation method thereof.
Background technique
Metallized film capacitor is to do medium with organic plastics film, does electrode with metallized film, passes through winding method
Manufactured capacitor, film used in metallic film capacitor has poly- ethyl ester, polypropylene, polycarbonate etc., in addition to winding-type
Except, also there is lamination-type.Metallic film capacitor has high pressure resistant, high insulation resistance, impedance frequency characteristic good, lower
ESR, high capacity stability, low loss tangent.
Capacitor film is the heart of capacitor, wherein the impact resistance of polycarbonate is good, and refractive index is high, processability
Can be good, not needing additive just has V-2 grades of flame retardant properties of UL94, and shaping shrinkage rate is low, and dimensional stability is good, endurance
Property it is good, weatherability is good, and electrical characteristic is excellent, and moist, high temperature is also able to maintain electric performance stablity, is the reason for manufacturing electronics, electric parts
Think material, excellent insulating property is excellent E (120 DEG C) class F insulating material F, for manufacturing insulation connector, magazine, pipe
Seat, insulating sleeve, telephone case and part, the battery case of mine lamp etc..Polycarbonate film be also widely used as capacitor, absolutely
Edge suitcase, audiotape, colored video tape etc., still, there are some disadvantages for polycarbonate film, if heating conduction is poor, intolerant to
Ultraviolet light, intolerant to highly basic, easy stress cracking, resistance to organic chemistry conduct, resistance to scratch are poor, are easy to be invaded by certain organic solvents
Erosion, seriously affects the service efficiency and service life of capacitor, not can guarantee complete machine and work steadily in the long term.
It is the mainstream method for preparing heat-conducting polymer material at present that heat filling is added in resin matrix.It is existing at present more
Kind filler is added in resin matrix, such as metal, graphite, carbon nanotube, aluminium oxide, however utilizes the preparation of these fillers
Heat-conducting polymer material has the shortcomings that conductivity is excessively high or thermal conductivity is too low, is unable to satisfy the application in heat conductive insulating field.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art, provides a kind of durable capacitor film and its preparation side
Method.
The present invention is realized by following technological means solves above-mentioned technical problem:
A kind of durable capacitor film, including the following raw material as mass fraction: 100 parts of PC, ABS 15~28
Part, 8~20 parts of HDPE, modified 6~25 parts of hexagonal boron nitride, 1~8 part of ultraviolet absorbing agent, 1~3 part of SMA resin.
Further, the modifying agent of modified hexagonal boron nitride is cationic polymethacrylamide.
Further, the ultraviolet absorbing agent is ultraviolet absorbent UV-531.
A kind of preparation method of durable capacitor film, comprising the following steps:
Step1. modified hexagonal boron nitride is prepared
200~300 parts of 1 part of hexagonal boron nitride, distilled water as mass fraction is added in reactor, ultrasonic disperse
25~35h；
The cationic polymethacrylamide aqueous solution for being 0.2~0.8% by mass fraction, the solution after being added drop-wise to dispersion
In, solution starts to be layered in dropwise addition, stops that cationic polymethacrylamide solution is added dropwise when upper solution clarification, continues to stir
5~25min is mixed, mixed liquor is obtained；
Above-mentioned mixed liquor is filtered by miillpore filter, then by solid residue dry 18 at 35~50 DEG C~for 24 hours,
Obtain the modified hexagonal boron nitride of cationic polymethacrylamide；
Step2. capacitor film is prepared
PC, ABS, HDPE, SMA resin are put into kneader according to above-mentioned mass fraction first and are heat-treated, sufficiently
It is uniformly mixed, then the raw materials such as modified hexagonal boron nitride, ultraviolet absorbing agent is added in kneader according to above-mentioned mass fraction,
It is sufficiently mixed, obtains mixed material；
Then mixed material is sent into extruder melting, obtains sheet-shaped molten body；
After sheet-shaped molten body cooling and shaping, after successively carrying out biaxial tension, Thickness sensitivity, tentering trimming, winding, twice
Ageing treatment obtains capacitor film.
Further, in the Step1., cationic polymethacrylamide is acrylyl oxy-ethyl-trimethyl salmiac
With the copolymer of Methacrylamide.
Further, in the Step1., ultrasound condition are as follows: 100kw, 30~55 DEG C.
Further, in the Step1., the aperture of miillpore filter is 0.15~0.45 μm.
Further, in the Step2., Thickness sensitivity uses Thickness resolution for 0.01 μm of infrared measuring thickness device.
The invention has the benefit that the present invention significantly improves the temperature classification of the capacitor film, heating conduction, resists
Ultraviolet light weatherability, chemical corrosion resistance, electrical insulating property and durability, so improve the quality of capacitor, service efficiency and
Service life.The present invention discloses a kind of preparation method of durable capacitor film, easy to operate, suitable large-scale industry metaplasia
It produces；Hexagonal boron nitride is modified using non-covalent bond, does not change its space structure, retains its original performance, and whole process operates
Simply, low for equipment requirements, pollution-free；It uses Thickness resolution for 0.01 μm of infrared measuring thickness device, measures capacitor film
Thickness；There is excellent heating conduction, uvioresistant good weatherability, high stability using capacitor film produced by the invention
With durability, tolerance high current ability, high temperature resistance, chemical resistance, percent thermal shrinkage is low at high temperature and performance is stablized, and uses
Service life is long.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, shall fall within the protection scope of the present invention.
The durable capacitor film of one kind described in the present embodiment, including the following raw material as mass fraction: 100 parts of PC,
15~28 parts of ABS, 8~20 parts of HDPE, modified 6~25 parts of hexagonal boron nitride, 1~8 part of ultraviolet absorbing agent, SMA resin 1~
3 parts.
PC/ABS significantly improves bending modulus, heat resistance, plating performance of capacitor film etc..
PC/HDPE significantly improves the boiling water resistance of capacitor film, resistance to ag(e)ing, against weather.
SMA resin has the characteristics such as hydrophily, water resistance, bubble, is copolymerized by styrene and butadienestyrene block and is obtained,
In its molecular structure have nonpolar aromatic ring yl and polar anhydride group, therefore with various polarity material or non-polar material phase
Capacitive is good, effectively improves the com-patibilising effect between PC and ABS, HDPE, can increase substantially the mechanical property of capacitor film
Can, improve the thickness and adhesion strength of phase interface, phenomena such as force stratification, cracking are answered in improvement, thus improve the stretching of capacitor film,
The mechanical properties such as toughness and high temperature resistance.
Hexagonal boron nitride, the title with white graphite have the layer structure of similar graphite, there is good lubricity, electricity
Insulating properties, thermal conductivity and chemical corrosion resistance have neutron absorption capability, and chemical property is stablized, to all molten metal chemistry
Inert, moulded products have very high moisture-proof convenient for machining, and fusing point is 3000 DEG C under nitrogen pressure, in atmosphere
2500 DEG C of distillations are depressed, for oxidation resistance temperature up to 900 DEG C, 2000 DEG C of high temperature resistant, it is 3000 DEG C that fusing point is used in nitrogen and argon, is hit
Voltage 2.0-3.0kv/mm is worn, still, surface chemistry group is few, and reactivity is low, with matrix poor compatibility.And modified six
Square boron nitride can be well dispersed in PC resin matrix, significantly improved the thermal conductivity of capacitor film, made capacitor film
With excellent heating conduction, heat resistance, chemical corrosion resistance, electrical insulating property, chemical property is stablized, and improves making for capacitor
With efficiency and service life.
The modifying agent of modified hexagonal boron nitride is cationic polymethacrylamide, using non-covalent bond method of modifying,
Improve hexagonal boron nitride with PC matrix compatibility, significantly improves dispersibility of the hexagonal boron nitride in PC matrix, in turn
Improve the heating conduction and temperature classification of capacitor film.
The ultraviolet absorbing agent is ultraviolet absorbent UV-531, weather-proof with the uvioresistant for improving capacitor film
Property.The ingredient of ultraviolet absorbent UV-531 is 2-hydroxy-4-n-octoxybenzophenone, can consumingly absorbing wavelength be
The ultraviolet light of 240~340nm can be used for various plastics, especially polyethylene, polypropylene, polystyrene, ABS resin, poly- carbonic acid
Ester, good with the compatibility of resin, volatility is small.
The present invention significantly improves temperature classification, heating conduction, the uvioresistant weatherability, chemically-resistant of the capacitor film
Corrosivity, electrical insulating property and durability, and then improve quality, service efficiency and the service life of capacitor.
Embodiment 1
A kind of durable capacitor film, including the following raw material as mass fraction: 100 parts of PC, 15 parts of ABS,
20 parts of HDPE, modified 6 parts of hexagonal boron nitride, 8 parts of ultraviolet absorbing agent, 1 part of SMA resin.
Embodiment 2
A kind of durable capacitor film, including the following raw material as mass fraction: 100 parts of PC, 28 parts of ABS,
8 parts of HDPE, modified 25 parts of hexagonal boron nitride, 1 part of ultraviolet absorbing agent, 3 parts of SMA resin.
Embodiment 3
A kind of durable capacitor film, including the following raw material as mass fraction: 100 parts of PC, 22 parts of ABS,
14 parts of HDPE, modified 15 parts of hexagonal boron nitride, 5 parts of ultraviolet absorbing agent, 2 parts of SMA resin.
In above-described embodiment 1~3, a kind of preparation method of durable capacitor film, comprising the following steps:
Step1. modified hexagonal boron nitride is prepared
200~300 parts of 1 part of hexagonal boron nitride, distilled water as mass fraction is added in reactor, ultrasonic disperse
25~35h, ultrasound condition are as follows: 100kw, 30~55 DEG C；The aqueous solution of hexagonal boron nitride is ultrasonically treated, to increase its table
Face elecrtonegativity；
The cationic polymethacrylamide aqueous solution for being 0.2~0.8% by mass fraction, the solution after being added drop-wise to dispersion
In, solution starts to be layered in dropwise addition, stops that cationic polymethacrylamide solution is added dropwise when upper solution clarification, continues to stir
5~25min is mixed, mixed liquor is obtained；Cationic polymethacrylamide is set to be adsorbed on hexagonal boron nitride surface using electrostatic interaction,
Meanwhile it will not influence the crystal structure of hexagonal boron nitride；
Above-mentioned mixed liquor is filtered by miillpore filter, the aperture of miillpore filter is 0.15~0.45 μm, then by solid
Residue dry 18 at 35~50 DEG C~for 24 hours, obtain the modified hexagonal boron nitride of cationic polymethacrylamide；Using non-
Covalent modification does not change its space structure, retains its original performance, and whole process is easy to operate, low for equipment requirements, nothing
Pollution；
Step2. capacitor film is prepared
PC, ABS, HDPE, SMA resin are put into kneader according to above-mentioned mass fraction first and are heat-treated, sufficiently
It is uniformly mixed, then the raw materials such as modified hexagonal boron nitride, ultraviolet absorbing agent is added in kneader according to above-mentioned mass fraction,
It is sufficiently mixed, obtains mixed material；
Then mixed material is sent into extruder melting, obtains sheet-shaped molten body；
After sheet-shaped molten body cooling and shaping, after successively carrying out biaxial tension, Thickness sensitivity, tentering trimming, winding, twice
Ageing treatment obtains capacitor film.
PC film surface tension is big, and compressive resistance is high, so without carrying out sided corona treatment.
In the Step1., cationic polymethacrylamide is acrylyl oxy-ethyl-trimethyl salmiac and metering system
The copolymer of amide.
In the Step2., Thickness sensitivity uses Thickness resolution for 0.01 μm of infrared measuring thickness device.
The present invention discloses a kind of preparation method of durable capacitor film, easy to operate, suitable large-scale industry metaplasia
It produces；Hexagonal boron nitride is modified using non-covalent bond, does not change its space structure, retains its original performance, and whole process operates
Simply, low for equipment requirements, pollution-free；It uses Thickness resolution for 0.01 μm of infrared measuring thickness device, measures capacitor film
Thickness；There is excellent heating conduction, uvioresistant good weatherability, high stability using capacitor film produced by the invention
With durability, tolerance high current ability, high temperature resistance, chemical resistance, percent thermal shrinkage is low at high temperature and performance is stablized, and uses
Service life is long.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (8)
1. a kind of durable capacitor film, it is characterised in that: including the following raw material as mass fraction: 100 parts of PC, ABS
15~28 parts, 8~20 parts of HDPE, modified 6~25 parts of hexagonal boron nitride, 1~8 part of ultraviolet absorbing agent, 1~3 part of SMA resin.
2. a kind of durable capacitor film as described in claim 1, it is characterised in that: the modification of modified hexagonal boron nitride
Agent is cationic polymethacrylamide.
3. durable capacitor film as claimed in claim 1 or 2 a kind of, it is characterised in that: the ultraviolet absorbing agent is
Ultraviolet absorbent UV-531.
4. including the preparation method of the durable capacitor film of one kind of any of claims 1 or 2, which is characterized in that including with
Lower step:
Step1. modified hexagonal boron nitride is prepared
200~300 parts of 1 part of hexagonal boron nitride, distilled water as mass fraction is added in reactor, ultrasonic disperse 25~
35h；
The cationic polymethacrylamide aqueous solution for being 0.2~0.8% by mass fraction is added drop-wise in the solution after dispersing,
Solution starts to be layered in dropwise addition, stops that cationic polymethacrylamide solution is added dropwise when upper solution clarification, continues stirring 5
~25min, obtains mixed liquor；
Above-mentioned mixed liquor is filtered by miillpore filter, then by solid residue dry 18 at 35~50 DEG C~for 24 hours, obtain
The modified hexagonal boron nitride of cationic polymethacrylamide；
Step2. capacitor film is prepared
PC, ABS, HDPE, SMA resin are put into kneader according to the mass fraction described in claim 1 first and carry out hot place
Reason is sufficiently mixed uniformly, then by raw materials such as modified hexagonal boron nitride, ultraviolet absorbing agents according to the matter described in claim 1
It measures score to be added in kneader, is sufficiently mixed, obtains mixed material；
Then mixed material is sent into extruder melting, obtains sheet-shaped molten body；
After sheet-shaped molten body cooling and shaping, successively carry out biaxial tension, Thickness sensitivity, tentering trimming, after winding, timeliness twice
Processing, obtains capacitor film.
5. a kind of preparation method of durable capacitor film as claimed in claim 4, it is characterised in that: the Step1.
In, cationic polymethacrylamide is the copolymer of acrylyl oxy-ethyl-trimethyl salmiac and Methacrylamide.
6. a kind of preparation method of durable capacitor film as claimed in claim 5, it is characterised in that: the Step1.
In, ultrasound condition are as follows: 100kw, 30~55 DEG C.
7. such as the preparation method of the durable capacitor film of one kind described in claim 5 or 6, it is characterised in that: described
Step1. in, the aperture of miillpore filter is 0.15~0.45 μm.
8. a kind of preparation method of durable capacitor film as described in any in claim 4~6, it is characterised in that: institute
It states in Step2., Thickness sensitivity uses Thickness resolution for 0.01 μm of infrared measuring thickness device.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115160758A (en) * | 2022-06-30 | 2022-10-11 | 湖北合聚新材料有限公司 | Hexagonal boron nitride modified halogen-free flame-retardant PC/ABS material for automobile parts and preparation method and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115160758A (en) * | 2022-06-30 | 2022-10-11 | 湖北合聚新材料有限公司 | Hexagonal boron nitride modified halogen-free flame-retardant PC/ABS material for automobile parts and preparation method and application thereof |
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