CN114875716A - Capacitor paper and preparation method and application thereof - Google Patents
Capacitor paper and preparation method and application thereof Download PDFInfo
- Publication number
- CN114875716A CN114875716A CN202210383052.6A CN202210383052A CN114875716A CN 114875716 A CN114875716 A CN 114875716A CN 202210383052 A CN202210383052 A CN 202210383052A CN 114875716 A CN114875716 A CN 114875716A
- Authority
- CN
- China
- Prior art keywords
- fibers
- fibrillated
- slurry
- parts
- electrolytic capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 109
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000000835 fiber Substances 0.000 claims abstract description 222
- 239000002002 slurry Substances 0.000 claims abstract description 77
- 239000012783 reinforcing fiber Substances 0.000 claims abstract description 50
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 8
- 238000004537 pulping Methods 0.000 claims abstract description 7
- 238000010009 beating Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 114
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 42
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 42
- 238000004519 manufacturing process Methods 0.000 claims description 31
- 229920002401 polyacrylamide Polymers 0.000 claims description 19
- 239000000853 adhesive Substances 0.000 claims description 18
- 230000001070 adhesive effect Effects 0.000 claims description 18
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims description 15
- 239000004952 Polyamide Substances 0.000 claims description 15
- 229920002647 polyamide Polymers 0.000 claims description 15
- 238000002844 melting Methods 0.000 claims description 14
- 229920000433 Lyocell Polymers 0.000 claims description 9
- -1 polyparaphenylene benzobisoxazole Polymers 0.000 claims description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 7
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 6
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- JTXMVXSTHSMVQF-UHFFFAOYSA-N 2-acetyloxyethyl acetate Chemical compound CC(=O)OCCOC(C)=O JTXMVXSTHSMVQF-UHFFFAOYSA-N 0.000 claims description 2
- 229920002873 Polyethylenimine Polymers 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims description 2
- 239000003522 acrylic cement Substances 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 229920006332 epoxy adhesive Polymers 0.000 claims description 2
- 229940015043 glyoxal Drugs 0.000 claims description 2
- 239000003607 modifier Substances 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 239000011148 porous material Substances 0.000 abstract description 12
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000004513 sizing Methods 0.000 description 27
- 239000002131 composite material Substances 0.000 description 16
- 238000000227 grinding Methods 0.000 description 15
- 239000010410 layer Substances 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- WRDNCFQZLUCIRH-UHFFFAOYSA-N 4-(7-azabicyclo[2.2.1]hepta-1,3,5-triene-7-carbonyl)benzamide Chemical compound C1=CC(C(=O)N)=CC=C1C(=O)N1C2=CC=C1C=C2 WRDNCFQZLUCIRH-UHFFFAOYSA-N 0.000 description 12
- 238000010835 comparative analysis Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 206010061592 cardiac fibrillation Diseases 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002600 fibrillogenic effect Effects 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 240000000907 Musa textilis Species 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000000635 electron micrograph Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 125000001140 1,4-phenylene group Chemical group [H]C1=C([H])C([*:2])=C([H])C([H])=C1[*:1] 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/02—Synthetic cellulose fibres
- D21H13/08—Synthetic cellulose fibres from regenerated cellulose
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/14—Polyalkenes, e.g. polystyrene polyethylene
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/24—Polyesters
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/26—Polyamides; Polyimides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
- D21H21/20—Wet strength agents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/54—Electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/022—Electrolytes; Absorbents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/44—Fibrous material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electrochemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Chemical & Material Sciences (AREA)
- Paper (AREA)
Abstract
The invention discloses electrolytic capacitor paper and a preparation method and application thereof, wherein the electrolytic capacitor paper comprises the following components in parts by mass: 40-100 parts of fibrillated fibers and 1-30 parts of reinforcing fibers; the preparation method comprises the following steps: (1) pulping the fibrillated fibers to prepare fiber pulp, and stopping pulping until the beating degree is 50-95 DEG SR to obtain pulp A; (2) uniformly dispersing the reinforced fibers to obtain slurry B; (3) mixing the slurry A and the slurry B, adding a reinforcing agent, and uniformly mixing to obtain slurry C; (4) and (4) forming the slurry C on paper forming equipment, and carrying out post-treatment to obtain the capacitor paper. The electrolytic capacitor paper has rich pore structures, uniform pore size distribution, excellent liquid absorption performance, better strength and extremely low ESR value, and is suitable for being used in extremely low temperature (-55 ℃) environment.
Description
Technical Field
The invention relates to the field of electrolytic capacitors, in particular to electrolytic capacitor paper suitable for being used in a low temperature range, and a preparation method and application thereof.
Background
At present, the low-voltage electrolytic capacitor paper commonly used in the market is prepared by one or more of hemp pulp, cotton pulp, straw pulp and wood pulp, has low impedance and high liquid absorption, is suitable for being made into a low-voltage aluminum electrolytic capacitor, and has wide application in the fields of illumination, consumer electronics and the like. However, with the development of new energy vehicles, charging piles, communication base stations and other technical fields, higher requirements are put on the low-temperature performance of electrolytic capacitors. The conventional electrolytic capacitor paper has a low ESR value, which is one of the reasons for the rapid increase of impedance and the rapid attenuation of capacity of the aluminum electrolytic capacitor in a low-temperature environment (at-40 ℃, the capacity attenuation of the electrolytic capacitor can reach more than 50%), so that the reliability of the capacitor is greatly reduced, the requirements of new energy vehicles, charging piles, communication base stations and the like on an extremely cold environment (at-55 ℃) are difficult to meet, and the application of the aluminum electrolytic capacitor is severely limited, so that the electrolytic capacitor paper suitable for being used in a low-temperature range is urgently needed to be researched and developed.
Disclosure of Invention
The invention provides electrolytic capacitor paper and a preparation method and application thereof, which are used for solving the technical problems of low ESR value and poor low-temperature performance of the existing electrolytic capacitor paper.
In order to solve the technical problems, the invention adopts the following technical scheme:
an electrolytic capacitor paper comprises the following components in parts by mass: 40-100 parts of fibrillated fibers and 1-30 parts of reinforcing fibers.
The design idea of the technical method is that the fibrillated fibers have a larger length-diameter ratio than non-fibrillated fibers, and the fiber size can reach a nanometer level.
In a further preferred embodiment of the present invention, the fibrillated fibers include at least one of fibrillated polyphenylene sulfide fibers, fibrillated lyocell fibers, polyparaphenylene benzobisoxazole fibers, polyparaphenylene terephthalamide fibers, and polyaryloxadiazole fibers.
More preferably, the fibrillated fibers have an average length of 0.1 to 3.0 mm; more preferably, the fibrillated fibers have an average length of 0.3 to 1.5 mm. The length of the fibrillated fibers influences the strength of the capacitor paper, and the longer length is beneficial to increasing the strength of the paper, but in the actual production process, the longer length of the fibrillated fibers can cause the fibrillation preparation process of the fibers to be difficult to realize, so that the average length range of the fibrillated fibers defined by the invention ensures the smooth production and simultaneously improves the strength of the electrolytic capacitor paper as much as possible.
More preferably, the fiber further comprises 0.1-30 parts by mass of non-fibrillated fibers, wherein the length of the non-fibrillated fibers is 1-10 mm, and the fineness of the non-fibrillated fibers is 0.3-2 Dtex; more preferably, the non-fibrillated fiber has a length of 3 to 7mm, a fineness of 0.5 to 1.5Dtex, and an addition amount of 5 to 20 parts by mass. The non-fibrillated fiber has a low length-diameter ratio and a large fiber size, and can be used as a framework to improve the strength of the electrolytic capacitor paper.
As a further optimization of the technical scheme, the fabric further comprises 0.1-2 parts of a reinforcing agent, wherein the reinforcing agent comprises at least one of a dry strength agent, a wet strength agent and an adhesive; wherein the dry strength agent comprises at least one of polyacrylamide, glyoxal polyacrylamide starch and a modifier thereof, and polyvinyl alcohol; the wet strength agent comprises at least one of formaldehyde resin, polyamide epichlorohydrin, polyethyleneimine and polyacrylamide; the adhesive comprises at least one of polyvinyl alcohol adhesive, ethylene acetate adhesive, acrylic adhesive, polyurethane adhesive, epoxy adhesive, phenolic adhesive, organic silicon adhesive and rubber adhesive. The strengthening agent can improve the strength through the cross-linking effect, and simultaneously can generate more hydrogen bonds or hydrogen bonds to protect the paper structure and improve the binding force, so the tensile strength of the paper can be improved on the premise of keeping other performances of the paper.
As a further preferred mode of the above aspect, the reinforcing fibers include at least one of water-soluble polyvinyl alcohol fibers and low-melting polyester fibers. The two types of reinforcing fibers are water-soluble fibers, and form a bonding effect after being dissolved in water, so that a reinforcing effect can be generated on the performance of paper.
As a further preferable aspect of the above technical solution, the electrolytic capacitor paper comprises the following components in parts by mass: 70-95 parts of fibrillated fibers, 0.2-1 part of reinforcing agent and 3-20 parts of reinforcing fibers.
Based on the same technical concept, the invention also provides a preparation method of the electrolytic capacitor paper, which comprises the following steps:
(1) pulping 40-100 parts by mass of fibrillatable fibers into fiber pulp, and stopping pulping until the beating degree is 50-95 DEG SR to obtain pulp A;
(2) uniformly dispersing 1-30 parts by mass of the reinforcing fibers to obtain slurry B;
(3) mixing the slurry A and the slurry B, adding 0.1-2 parts by mass of the reinforcing agent, and uniformly mixing to obtain slurry C;
(4) and forming the slurry C on paper forming equipment, and carrying out post-treatment to obtain the electrolytic capacitor paper.
The design idea of the technical scheme is that the pulping in the step (1) is a necessary process of fiber fibrillation, the length of the fibrillated fibers is changed, the specific surface area, the fine fibers and the like of the fibrillated fibers are also changed, the beating degree is related to the fibrillation degree of the fibers, the micro (aperture) structure of the paper is influenced, and the dewatering speed of a paper machine is influenced when the capacitor paper is formed.
Preferably, in the step (3), the slurry a, the slurry B and the slurry D are mixed together to obtain a slurry C, and the slurry D is obtained by uniformly dispersing 0.1 to 30 parts by mass of non-fibrillated fibers; the non-fibrillated fiber has a length of 1 to 10mm and a fineness of 0.3 to 2 Dtex. The fineness of the unfiberized fiber represents the diameter of the fiber, and the fiber is too coarse, so that an overlarge pore structure is easily formed, and the performance of the finished product of the electrolytic capacitor paper is not facilitated.
In a further preferred embodiment of the above aspect, the non-fibrillated fibers in step (1) include at least one of polyphenylene sulfide fibers, lyocell fibers, polyparaphenylene benzobisoxazole fibers, polyparaphenylene terephthalamide fibers, and polyaryloxadiazole fibers, and the non-fibrillated fibers have a length of 1 to 10mm and a fineness of 0.3 to 2 Dtex.
As a further preferred aspect of the above technical means, the defibrination of the fibrillated fibers in step (1) is stopped until the freeness is 70 to 90 ° SR.
Based on the same technical concept, the invention also provides application of the electrolytic capacitor paper or the capacitor paper prepared by the preparation method, and the electrolytic capacitor paper is applied to a liquid electrolytic capacitor, a solid capacitor, a semi-solid capacitor or a super capacitor or applied to a battery as a diaphragm material.
Compared with the prior art, the invention has the advantages that:
(1) the electrolytic capacitor paper has rich pore structures, uniform pore size distribution, excellent liquid absorption performance, better strength and extremely low ESR value, and is suitable for being used in an extremely low temperature (-55 ℃);
(2) the electrolytic capacitor paper has simple preparation method and easily obtained raw materials, and is suitable for large-scale industrial production;
(3) the electrolytic capacitor paper can be applied to the fields of new energy vehicles, charging piles, communication base stations, aerospace engineering, rail transit, wind power generation and the like, can also be used as a novel diaphragm material of important electronic elements such as carbonization-free solid-state capacitor paper, semi-solid-state capacitor paper, super capacitor paper, lithium ion battery diaphragms and the like, and can be applied to a plurality of fields such as automobiles, computers, intelligent electric meters and the like.
Drawings
FIG. 1 is an electron micrograph of an electrolytic capacitor paper of example 1.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1:
the electrolytic capacitor paper of the embodiment, an electron micrograph of which is shown in fig. 1, comprises the following components in parts by mass: 90 parts fibrillated fiber, 5 parts non-fibrillated fiber, 0.5 parts dry strength agent, 0.5 parts wet strength agent, and 5 parts reinforcing fiber; wherein the fibrillated fibers are fibrillated polyphenylene sulfide fibers; the non-fibrillated fibers are polyphenylene sulfide fibers which are not fibrillated, the average length is 6mm, and the titer is 1.5 Dtex; the dry strength agent is polyacrylamide, and the wet strength agent is polyamide epichlorohydrin; the reinforcing fiber is low-melting point PET fiber.
The method for producing the electrolytic capacitor paper of the embodiment includes the steps of:
(1) grinding polyphenylene sulfide chopped fibers with the length of 6mm and the fineness of 1.5Dtex to 70-degree SR by a disc mill to obtain first slurry;
(2) uniformly dispersing non-fibrillated polyphenylene sulfide chopped fibers to obtain a second slurry, and uniformly dispersing reinforcing fibers in water to obtain a third slurry;
(3) uniformly mixing the first, second and third sizing agents according to a proportion, and adding a wet strength agent and a dry strength agent to obtain a fourth sizing agent; and manufacturing the fourth slurry by using a cylinder paper machine, and controlling the thickness of the paper to be 40 +/-3.2 um by adopting a double-layer composite forming mode to prepare the electrolytic capacitor paper of the embodiment.
Example 2:
the electrolytic capacitor paper of the embodiment comprises the following components in parts by mass: 90 parts fibrillated fiber, 5 parts non-fibrillated fiber, 0.5 parts dry strength agent, 0.5 parts wet strength agent, and 5 parts reinforcing fiber; wherein the fibrillated fibers are fibrillated polyphenylene sulfide fibers; the non-fibrillated fibers are polyphenylene sulfide fibers which are not fibrillated, the length of the fibers is 6mm, and the fineness of the fibers is 1.5 Dtex; the dry strength agent is polyacrylamide, and the wet strength agent is polyamide epichlorohydrin; the reinforcing fiber is low-melting point PET fiber.
The preparation method of the capacitor paper of the embodiment comprises the following steps:
(1) grinding polyphenylene sulfide chopped fibers with the length of 6mm and the fineness of 1.5Dtex to 85 DEG SR by a disc mill to obtain first slurry;
(2) uniformly dispersing non-fibrillated polyphenylene sulfide chopped fibers to obtain a second slurry, and uniformly dispersing reinforcing fibers in water to obtain a third slurry;
(3) uniformly mixing the first, second and third sizing agents in proportion, and then adding a wet strength agent and a dry strength agent to obtain a fourth sizing agent; and manufacturing the fourth slurry by using a cylinder paper machine, and controlling the thickness of the paper to be 40 +/-3.2 um by adopting a double-layer composite forming mode to prepare the electrolytic capacitor paper of the embodiment.
Example 3:
the electrolytic capacitor paper of the embodiment comprises the following components in parts by mass: 90 parts fibrillated fibers, 5 parts non-fibrillated fibers, 0.5 parts dry strength agent, 0.5 parts wet strength agent, and 5 parts reinforcing fibers; wherein the fibrillated fibers are fibrillated poly-p-phenylene terephthalamide fibers; the non-fibrillated fibers are polyphenylene sulfide fibers which are not fibrillated, the length of the fibers is 6mm, and the fineness of the fibers is 1.5 Dtex; the dry strength agent is polyacrylamide, and the wet strength agent is polyamide epichlorohydrin; the reinforcing fiber is low-melting point PET fiber.
The method for producing the electrolytic capacitor paper of the embodiment includes the steps of:
(1) grinding poly-p-phenylene terephthalamide fiber with the length of 6mm and the fineness of 1.5Dtex to 85 DEG SR by a disc mill to obtain first slurry;
(2) uniformly dispersing non-fibrillated polyphenylene sulfide chopped fibers to obtain a second slurry, and uniformly dispersing reinforcing fibers in water to obtain a third slurry;
(3) uniformly mixing the first, second and third sizing agents according to a proportion, and adding a wet strength agent and a dry strength agent to obtain a fourth sizing agent; and manufacturing the fourth slurry by using a cylinder paper machine, and controlling the thickness of the paper to be 40 +/-3.2 um by adopting a double-layer composite forming mode to prepare the electrolytic capacitor paper of the embodiment.
Example 4:
the electrolytic capacitor paper of the embodiment comprises the following components in parts by mass: 90 parts fibrillated fiber, 5 parts non-fibrillated fiber, 0.5 parts dry strength agent, 0.5 parts wet strength agent, and 5 parts reinforcing fiber; wherein the fibrillated fibers are fibrillated poly-p-phenylene terephthalamide fibers and tencel chopped fibers, and the mass ratio of the fibrillated fibers to the poly-p-phenylene terephthalamide fibers to the tencel chopped fibers is 1: 1; the non-fibrillated fibers are polyphenylene sulfide fibers which are not fibrillated, the length of the fibers is 6mm, and the fineness of the fibers is 1.5 Dtex; the dry strength agent is polyacrylamide, and the wet strength agent is polyamide epichlorohydrin; the reinforcing fiber is low-melting point PET fiber.
The method for producing the electrolytic capacitor paper of the embodiment includes the steps of:
(1) mixing polyphenylene sulfide chopped fibers with the length of 6mm and the fineness of 1.5Dtex with tencel fibers, and grinding the mixture to 85 DEG SR by a disc mill to obtain first slurry;
(2) uniformly dispersing non-fibrillated polyphenylene sulfide chopped fibers to obtain a second slurry, and uniformly dispersing reinforcing fibers in water to obtain a third slurry;
(3) uniformly mixing the first, second and third sizing agents according to a proportion, and adding a wet strength agent and a dry strength agent to obtain a fourth sizing agent; and manufacturing the fourth slurry by using a cylinder paper machine, and controlling the thickness of the paper to be 40 +/-3.2 um by adopting a double-layer composite forming mode to prepare the electrolytic capacitor paper of the embodiment.
Example 5:
the electrolytic capacitor paper of the embodiment comprises the following components in parts by mass: 90 parts fibrillated fiber, 5 parts non-fibrillated fiber, 0.5 parts dry strength agent, 0.5 parts wet strength agent, and 5 parts reinforcing fiber; wherein the fibrillated fibers are fibrillated lyocell fibers; the non-fibrillated fibers are polyphenylene sulfide fibers which are not fibrillated, the length of the fibers is 6mm, and the fineness of the fibers is 1.5 Dtex; the dry strength agent is polyacrylamide, and the wet strength agent is polyamide epichlorohydrin; the reinforcing fiber is low-melting point PET fiber.
The method for producing the electrolytic capacitor paper of the embodiment includes the steps of:
(1) grinding tencel fiber with the length of 6mm and the fineness of 1.5Dtex to 85 DEG SR by a disc mill to obtain first slurry;
(2) uniformly dispersing non-fibrillated polyphenylene sulfide chopped fibers to obtain a second slurry, and uniformly dispersing reinforcing fibers in water to obtain a third slurry;
(3) uniformly mixing the first, second and third sizing agents according to a proportion, and adding a wet strength agent and a dry strength agent to obtain a fourth sizing agent; and manufacturing the fourth slurry by using a cylinder paper machine, and controlling the thickness of the paper to be 40 +/-3.2 um by adopting a double-layer composite forming mode to prepare the electrolytic capacitor paper of the embodiment.
Example 6:
the electrolytic capacitor paper of the embodiment comprises the following components in parts by mass: 80 parts of fibrillated fibers, 15 parts of non-fibrillated fibers, 0.5 part dry strength agent, 0.5 part wet strength agent, and 5 parts reinforcing fibers; wherein the fibrillated fibers are fibrillated poly-p-phenylene terephthalamide fibers; the non-fibrillated fibers are polyphenylene sulfide fibers which are not fibrillated, the length of the fibers is 6mm, and the fineness of the fibers is 1.5 Dtex; the dry strength agent is polyacrylamide, and the wet strength agent is polyamide epichlorohydrin; the reinforcing fiber is low-melting point PET fiber.
The method for producing the electrolytic capacitor paper of the embodiment includes the steps of:
(1) grinding poly-p-phenylene terephthalamide fiber with the length of 6mm and the fineness of 1.5Dtex to 85 DEG SR by a disc mill to obtain first slurry;
(2) uniformly dispersing non-fibrillated polyphenylene sulfide chopped fibers to obtain a second slurry, and uniformly dispersing reinforcing fibers in water to obtain a third slurry;
(3) uniformly mixing the first, second and third sizing agents according to a proportion, and adding a wet strength agent and a dry strength agent to obtain a fourth sizing agent; and manufacturing the fourth slurry by using a cylinder paper machine, and controlling the thickness of the paper to be 40 +/-3.2 um by adopting a double-layer composite forming mode to prepare the electrolytic capacitor paper of the embodiment.
Example 7:
the electrolytic capacitor paper of the embodiment comprises the following components in parts by mass: 90 parts fibrillated fiber, 5 parts non-fibrillated fiber, 0.5 parts dry strength agent, 0.5 parts wet strength agent, and 5 parts reinforcing fiber; wherein the fibrillated fibers are fibrillated poly-p-phenylene terephthalamide fibers; the non-fibrillated fibers are polyphenylene sulfide fibers which are not fibrillated, the length of the fibers is 6mm, and the fineness of the fibers is 1.5 Dtex; the dry strength agent is polyacrylamide, and the wet strength agent is polyamide epichlorohydrin; the reinforcing fiber is low-melting point PET fiber.
The method for producing the electrolytic capacitor paper of the embodiment includes the steps of:
(1) grinding poly-p-phenylene terephthalamide fiber with the length of 6mm and the fineness of 1.5Dtex to 85 DEG SR by a disc mill to obtain first slurry;
(2) uniformly dispersing non-fibrillated polyphenylene sulfide chopped fibers to obtain a second slurry, and uniformly dispersing reinforcing fibers in water to obtain a third slurry;
(3) uniformly mixing the first, second and third sizing agents according to a proportion, and adding a wet strength agent and a dry strength agent to obtain a fourth sizing agent; and manufacturing the fourth slurry by using a cylinder paper machine, adopting a single-layer composite forming mode, and controlling the thickness of the paper to be 40 +/-3.2 um to prepare the electrolytic capacitor paper of the embodiment.
Example 8:
the electrolytic capacitor paper of the embodiment comprises the following components in parts by mass: 90 parts fibrillated fiber, 5 parts non-fibrillated fiber, 0.5 parts dry strength agent, 0.5 parts wet strength agent, and 5 parts reinforcing fiber; wherein the fibrillated fibers are fibrillated poly-p-phenylene terephthalamide fibers; the non-fibrillated fibers are polyphenylene sulfide fibers which are not fibrillated, the length of the fibers is 6mm, and the fineness of the fibers is 1.5 Dtex; the dry strength agent is polyacrylamide, and the wet strength agent is polyamide epichlorohydrin; the reinforcing fiber is low-melting-point PVA fiber.
The method for producing the electrolytic capacitor paper of the embodiment includes the steps of:
(1) grinding poly-p-phenylene terephthalamide fiber with the length of 6mm and the fineness of 1.5Dtex to 85 DEG SR by a disc mill to obtain first slurry;
(2) uniformly dispersing non-fibrillated polyphenylene sulfide chopped fibers to obtain a second slurry, and uniformly dispersing reinforcing fibers in water to obtain a third slurry;
(3) uniformly mixing the first, second and third sizing agents according to a proportion, and adding a wet strength agent and a dry strength agent to obtain a fourth sizing agent; and manufacturing the fourth slurry by using a cylinder paper machine, and controlling the thickness of the paper to be 40 +/-3.2 um by adopting a double-layer composite forming mode to prepare the electrolytic capacitor paper of the embodiment.
Example 9:
the electrolytic capacitor paper of the embodiment comprises the following components in parts by mass: 90 parts fibrillated fiber, 5 parts non-fibrillated fiber, 1.5 parts dry strength agent, 1.5 parts wet strength agent, and 5 parts reinforcing fiber; wherein the fibrillated fibers are fibrillated poly-p-phenylene terephthalamide fibers; the non-fibrillated fibers are polyphenylene sulfide fibers which are not fibrillated, the length of the fibers is 6mm, and the fineness of the fibers is 1.5 Dtex; the dry strength agent is polyacrylamide, and the wet strength agent is polyamide epichlorohydrin; the reinforcing fiber is low-melting point PET fiber.
The method for producing the electrolytic capacitor paper of the embodiment includes the steps of:
(1) grinding poly-p-phenylene terephthamide fiber with the length of 6mm and the fineness of 1.5Dtex to 85 DEG SR by a disc mill to obtain first slurry;
(2) uniformly dispersing non-fibrillated polyphenylene sulfide chopped fibers to obtain a second slurry, and uniformly dispersing reinforcing fibers in water to obtain a third slurry;
(3) uniformly mixing the first, second and third sizing agents according to a proportion, and adding a wet strength agent and a dry strength agent to obtain a fourth sizing agent; and manufacturing the fourth slurry by using a cylinder paper machine, and controlling the thickness of the paper to be 40 +/-3.2 um by adopting a double-layer composite forming mode to prepare the electrolytic capacitor paper of the embodiment.
Example 10:
the electrolytic capacitor paper of the embodiment comprises the following components in parts by mass: 90 parts fibrillated fiber, 5 parts non-fibrillated fiber, 0.5 parts dry strength agent, 0.5 parts wet strength agent, and 5 parts reinforcing fiber; wherein the fibrillated fibers are fibrillated poly-p-phenylene terephthalamide fibers; the non-fibrillated fibers are polyphenylene sulfide fibers which are not fibrillated, the length of the fibers is 6mm, and the fineness of the fibers is 0.7 Dtex; the dry strength agent is polyacrylamide, and the wet strength agent is polyamide epichlorohydrin; the reinforcing fiber is low-melting point PET fiber.
The method for producing the electrolytic capacitor paper of the embodiment includes the steps of:
(1) grinding polyphenylene sulfide chopped fibers with the length of 6mm and the fineness of 0.7Dtex to 85 DEG SR by a disc mill to obtain first slurry;
(2) uniformly dispersing non-fibrillated polyphenylene sulfide chopped fibers to obtain a second slurry, and uniformly dispersing reinforcing fibers in water to obtain a third slurry;
(3) uniformly mixing the first, second and third sizing agents in proportion, and then adding a wet strength agent and a dry strength agent to obtain a fourth sizing agent; and manufacturing the fourth slurry by using a cylinder paper machine, and controlling the thickness of the paper to be 40 +/-3.2 um by adopting a double-layer composite forming mode to prepare the electrolytic capacitor paper of the embodiment.
Example 11:
the electrolytic capacitor paper comprises the following components in parts by mass: 90 parts fibrillated fiber, 5 parts non-fibrillated fiber, 1.5 parts dry strength agent, 1.5 parts wet strength agent, and 5 parts reinforcing fiber; wherein the fibrillated fibers are fibrillated polyphenylene sulfide fibers; the non-fibrillated fibers are polyphenylene sulfide fibers which are not fibrillated, the length of the fibers is 6mm, and the fineness of the fibers is 1.5 Dtex; the dry strength agent is polyacrylamide, and the wet strength agent is polyamide epichlorohydrin; the reinforcing fiber is low-melting point PET fiber.
The method for producing the electrolytic capacitor paper of the embodiment includes the steps of:
(1) grinding polyphenylene sulfide chopped fibers with the length of 6mm and the fineness of 1.5Dtex to 85 DEG SR by a disc mill to obtain first slurry;
(2) uniformly dispersing non-fibrillated polyphenylene sulfide chopped fibers to obtain a second slurry, and uniformly dispersing reinforcing fibers in water to obtain a third slurry;
(3) uniformly mixing the first, second and third sizing agents according to a proportion, and adding a wet strength agent and a dry strength agent to obtain a fourth sizing agent; making the fourth slurry by a cylinder paper machine, adopting a double-layer composite forming mode, spraying vinyl acetate adhesives on the surface of the paper in a surface spraying mode after forming, wherein the adhesive amount is 1g/m 2 The thickness of the paper was controlled to 40. + -. 3.2. mu.m, and the electrolytic capacitor paper of this example was prepared.
Example 12:
the electrolytic capacitor paper of the embodiment comprises the following components in parts by mass: 30 parts of fibrillated fibers, 65 parts of non-fibrillated fibers, 1.5 parts of dry strength agent, 1.5 parts of wet strength agent, and 5 parts of reinforcing fibers; wherein the fibrillated fibers are fibrillated polyphenylene sulfide fibers; the non-fibrillated fibers are polyphenylene sulfide fibers which are not fibrillated, the length of the fibers is 6mm, and the fineness of the fibers is 1.5 Dtex; the dry strength agent is polyacrylamide, and the wet strength agent is polyamide epichlorohydrin; the reinforcing fiber is low-melting point PET fiber.
The method for producing the electrolytic capacitor paper of the embodiment includes the steps of:
(1) grinding polyphenylene sulfide chopped fibers with the length of 6mm and the fineness of 1.5Dtex to 85 DEG SR by a disc mill to obtain first slurry;
(2) uniformly dispersing non-fibrillated polyphenylene sulfide chopped fibers to obtain a second slurry, and uniformly dispersing reinforcing fibers in water to obtain a third slurry;
(3) uniformly mixing the first, second and third sizing agents according to a proportion, and adding a wet strength agent and a dry strength agent to obtain a fourth sizing agent; and manufacturing the fourth slurry by using a cylinder paper machine, and controlling the thickness of the paper to be 40 +/-3.2 um by adopting a double-layer composite forming mode to prepare the electrolytic capacitor paper of the embodiment.
Example 13:
the electrolytic capacitor paper of the embodiment comprises the following components in parts by mass: 30 parts of fibrillated fibers, 40 parts of non-fibrillated fibers, 1.5 parts of dry strength agent, 1.5 parts of wet strength agent and 30 parts of reinforcing fibers; wherein the fibrillated fibers are fibrillated polyphenylene sulfide fibers; the non-fibrillated fibers are polyphenylene sulfide fibers which are not fibrillated, the length of the fibers is 6mm, and the fineness of the fibers is 1.5 Dtex; the dry strength agent is polyacrylamide, and the wet strength agent is polyamide epichlorohydrin; the reinforcing fiber is low-melting point PET fiber.
The method for producing the electrolytic capacitor paper of the embodiment includes the steps of:
(1) grinding polyphenylene sulfide chopped fibers with the length of 6mm and the fineness of 1.5Dtex to 85 DEG SR by a disc mill to obtain first slurry;
(2) uniformly dispersing non-fibrillated polyphenylene sulfide chopped fibers to obtain a second slurry, and uniformly dispersing reinforcing fibers in water to obtain a third slurry;
(3) uniformly mixing the first, second and third sizing agents according to a proportion, and adding a wet strength agent and a dry strength agent to obtain a fourth sizing agent; and manufacturing the fourth slurry by using a cylinder paper machine, and controlling the thickness of the paper to be 40 +/-3.2 um by adopting a double-layer composite forming mode to prepare the electrolytic capacitor paper of the embodiment.
Comparative example 1:
the electrolytic capacitor paper of this comparative example was prepared by: grinding the manila hemp pulp to 25-degree SR by using a disc mill, manufacturing the pulp by using a cylinder paper machine, adopting a double-layer composite forming mode, and controlling the thickness of the paper to be 40 +/-3.2 mu m to prepare the electrolytic capacitor paper.
Comparative example 2:
the electrolytic capacitor paper of this comparative example was prepared by: uniformly mixing manila hemp pulp fibers and cotton pulp fibers in a mass ratio of 7:3, grinding the mixture to 25-degree SR by using a disc mill, papermaking by using a cylinder paper machine, and controlling the thickness of paper to be 40 +/-3.2 microns by adopting a double-layer composite forming mode to prepare the electrolytic capacitor paper.
The electrolytic capacitor papers obtained in comparative examples 1 to 2 and the electrolytic capacitor papers obtained in examples 1 to 13 were subjected to performance tests, and the results of the basic performance tests are shown in Table 1 below.
Table 1: basic performance test table for electrolytic capacitor paper of each comparative example and example
From the data in table 1, it can be known that the low-temperature type aluminum electrolytic capacitor paper prepared by the present invention has a lower ESR value and a more uniform pore size structure, which is important for improving the capacitor performance, compared to the normal temperature type electrolytic capacitor paper, and the low ESR value electrolytic capacitor paper makes the electrolytic capacitor show more stable characteristics at low temperature.
After specific analysis, the comparative analysis of examples 1 and 2 shows that the average pore size of the paper is smaller when the beating degree of the fibrillated fibers is improved;
comparative analysis of examples 1 and 11 shows that after surface sizing, the strength of the paper is improved, the average pore diameter is slightly reduced, and the change of ESR value is small;
comparative analysis of examples 3 and 4-5 shows that different fibrillated fibers have different effects on the pore size of the paper at the same freeness;
from comparative analysis of examples 3 and 6, it is found that the more chopped fibers, the larger the pore size of the paper;
comparative analysis of examples 3 and 7 shows that the single-layer forming mode and the double-layer composite forming mode have no obvious influence on the performance of the paper;
comparative analysis of examples 3 and 8 shows that the influence of different reinforcing fibers on the performance of the paper is not large when the amount of the reinforcing fibers is 5 parts;
from the comparative analysis of examples 3 and 9, it is seen that the greater the amount of wet and dry strength agents used, the greater the tensile strength of the paper;
comparative analysis of examples 3 and 10 shows that the average pore size of the paper is smaller by using fibers with smaller fineness;
comparative analysis of examples 3 and 12 to 13 shows that the average pore size of the paper is significantly increased when the amount of the non-fibrillated fibers is too large, and the electrolytic capacitor has a high probability of short-circuiting when the paper is used.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. Modifications and variations that may occur to those skilled in the art without departing from the spirit and scope of the invention are to be considered as within the scope of the invention.
Claims (10)
1. The electrolytic capacitor paper is characterized by comprising the following components in parts by mass: 40 to 100 parts of fibrillated fibers and 1 to 30 parts of reinforcing fibers.
2. The electrolytic capacitor paper according to claim 1, wherein the fibrillated fibers include at least one of fibrillated polyphenylene sulfide fibers, tencel fibers, polyparaphenylene benzobisoxazole fibers, polyparaphenylene terephthalamide fibers, and polyaryloxadiazole fibers.
3. The electrolytic capacitor paper as recited in claim 1, wherein the fibrillated fibers have an average length of 0.1 to 3.0 mm.
4. The capacitor paper according to claim 1, further comprising 0.1 to 30 parts by mass of non-fibrillated fibers having a length of 1 to 10mm and a fineness of 0.3 to 2 Dtex.
5. The electrolytic capacitor paper as recited in claim 1, wherein the reinforcing fibers comprise at least one of water-soluble polyvinyl alcohol fibers and low-melting polyester fibers.
6. The electrolytic capacitor paper as recited in any one of claims 1 to 5, further comprising 0.1 to 2 parts of a reinforcing agent, the reinforcing agent comprising at least one of a dry strength agent, a wet strength agent and an adhesive; wherein the dry strength agent comprises at least one of polyacrylamide, glyoxal polyacrylamide starch and a modifier thereof, and polyvinyl alcohol; the wet strength agent comprises at least one of formaldehyde resin, polyamide epichlorohydrin, polyethyleneimine and polyacrylamide; the adhesive comprises at least one of polyvinyl alcohol adhesive, ethylene acetate adhesive, acrylic adhesive, polyurethane adhesive, epoxy adhesive, phenolic adhesive, organic silicon adhesive and rubber adhesive.
7. A method for producing the electrolytic capacitor paper as claimed in claim 6, characterized by comprising the steps of:
(1) pulping 40-100 parts by mass of non-fibrillated fibers into fiber pulp, and stopping pulping until the beating degree is 50-95 DEG SR to obtain pulp A;
(2) uniformly dispersing 1-30 parts by mass of the reinforcing fibers to obtain slurry B;
(3) mixing the slurry A and the slurry B, adding 0.1-2 parts by mass of the reinforcing agent, and uniformly mixing to obtain slurry C;
(4) and forming the slurry C on paper forming equipment, and carrying out post-treatment to obtain the electrolytic capacitor paper.
8. The method for producing electrolytic capacitor paper according to claim 7, wherein the non-fibrillated fibers in step (1) include at least one of polyphenylene sulfide fibers, lyocell fibers, polyparaphenylene benzobisoxazole fibers, polyparaphenylene terephthalamide fibers, and polyaryloxadiazole fibers, and the non-fibrillated fibers have a length of 1 to 10mm and a fineness of 0.3 to 2 Dtex.
9. The method for producing electrolytic capacitor paper according to claim 7, wherein the slurry A, the slurry B and the slurry D are mixed together in the step (3) to obtain a slurry C, and the slurry D is obtained by uniformly dispersing 0.1 to 30 parts by mass of non-fibrillated fibers; the non-fibrillated fiber has a length of 1 to 10mm and a fineness of 0.3 to 2 Dtex.
10. Use of the electrolytic capacitor paper according to any one of claims 1 to 6 or the capacitor paper produced by the production method according to any one of claims 7 to 9 as a liquid electrolytic capacitor, a solid capacitor, a semi-solid capacitor or a supercapacitor, or as a separator material for use in a battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210383052.6A CN114875716B (en) | 2022-04-12 | 2022-04-12 | Capacitor paper and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210383052.6A CN114875716B (en) | 2022-04-12 | 2022-04-12 | Capacitor paper and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114875716A true CN114875716A (en) | 2022-08-09 |
| CN114875716B CN114875716B (en) | 2023-10-20 |
Family
ID=82670090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210383052.6A Active CN114875716B (en) | 2022-04-12 | 2022-04-12 | Capacitor paper and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114875716B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101128948A (en) * | 2005-02-25 | 2008-02-20 | 可乐丽股份有限公司 | Alkaline battery separator and alkaline primery battery |
| JP2016030862A (en) * | 2014-07-28 | 2016-03-07 | 株式会社クラレ | Fibrillated fiber and method for producing the same |
| CN108978354A (en) * | 2018-09-10 | 2018-12-11 | 浙江凯恩特种纸业有限公司 | A kind of enhanced super electrolytic capacitor diaphragm paper and its production method |
| CN110468612A (en) * | 2019-08-27 | 2019-11-19 | 中轻特种纤维材料有限公司 | A kind of production method of diaphragm of supercapacitor paper |
| JP2020088024A (en) * | 2018-11-19 | 2020-06-04 | 三菱製紙株式会社 | Solid electrolytic capacitor or hybrid separator for electrolytic capacitor, and solid electrolytic or hybrid electrolytic capacitor which is arranged by use thereof |
| CN113106786A (en) * | 2021-03-18 | 2021-07-13 | 华南理工大学 | Multilayer composite solid and semi-solid electrolytic capacitor diaphragm paper and preparation method and application thereof |
-
2022
- 2022-04-12 CN CN202210383052.6A patent/CN114875716B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101128948A (en) * | 2005-02-25 | 2008-02-20 | 可乐丽股份有限公司 | Alkaline battery separator and alkaline primery battery |
| JP2016030862A (en) * | 2014-07-28 | 2016-03-07 | 株式会社クラレ | Fibrillated fiber and method for producing the same |
| CN108978354A (en) * | 2018-09-10 | 2018-12-11 | 浙江凯恩特种纸业有限公司 | A kind of enhanced super electrolytic capacitor diaphragm paper and its production method |
| JP2020088024A (en) * | 2018-11-19 | 2020-06-04 | 三菱製紙株式会社 | Solid electrolytic capacitor or hybrid separator for electrolytic capacitor, and solid electrolytic or hybrid electrolytic capacitor which is arranged by use thereof |
| CN110468612A (en) * | 2019-08-27 | 2019-11-19 | 中轻特种纤维材料有限公司 | A kind of production method of diaphragm of supercapacitor paper |
| CN113106786A (en) * | 2021-03-18 | 2021-07-13 | 华南理工大学 | Multilayer composite solid and semi-solid electrolytic capacitor diaphragm paper and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114875716B (en) | 2023-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108221487B (en) | Low-internal-resistance super electrolytic capacitor paper and preparation method thereof | |
| CN108172419B (en) | enhanced diaphragm paper for super electrolytic capacitor and preparation method thereof | |
| CN102522515A (en) | Cellulose/polymer fiber composite diaphragm material for lithium secondary battery and preparation method thereof | |
| RU2698471C2 (en) | Accumulator separator and aluminium electrolytic capacitor | |
| Wang et al. | Mesoporous carbon microfibers for electroactive materials derived from lignocellulose nanofibrils | |
| CN108978354A (en) | A kind of enhanced super electrolytic capacitor diaphragm paper and its production method | |
| CN104885173A (en) | Separator for electric double layer capacitors, and electric double layer capacitor | |
| CN114790665A (en) | Carbonization-free diaphragm paper and preparation method and application thereof | |
| CN109935754A (en) | A kind of sandwich-type cellulose base diaphragm and preparation method thereof for lithium ion battery | |
| WO2018003936A1 (en) | Separator for capacitor | |
| JP2010232205A (en) | Separator for electric storage device | |
| CN114875716B (en) | Capacitor paper and preparation method and application thereof | |
| JP2010238808A (en) | Separator electrode integrated element for capacitor and capacitor made thereby | |
| CN110649212A (en) | Wood pulp fiber/nano barium sulfate composite material lithium battery diaphragm paper and preparation method thereof | |
| JPH0963560A (en) | Separator and battery using same | |
| CN108221486B (en) | Corrosion-resistant super electrolytic capacitor diaphragm paper and preparation method thereof | |
| JP2010232202A (en) | Separator for electricity storage device | |
| CN105931859A (en) | High performance capacitor membrane material with uniform character | |
| CN111040232B (en) | Method for preparing cellulose nanofiber aerogel through cyclohexane ultrasonic emulsification and application thereof | |
| CN114142158A (en) | AGM diaphragm for winding battery and preparation method thereof | |
| CN113278172A (en) | Preparation method of cellulose/aramid nano-fiber in-situ composite fiber | |
| CN105990040A (en) | High-porosity composite supercapacitor separator material | |
| CN105990038A (en) | Safe environment-friendly and simple-preparation supercapacitor separator material | |
| CN114481679B (en) | High-temperature-resistant supercapacitor diaphragm paper and preparation method and application thereof | |
| JP2020088089A (en) | Solid electrolytic capacitor or hybrid separator for electrolytic capacitor, and solid electrolytic or hybrid electrolytic capacitor which is arranged by use thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |