CN105789528A - Preparation method of PA/PP porous battery separator material - Google Patents
Preparation method of PA/PP porous battery separator material Download PDFInfo
- Publication number
- CN105789528A CN105789528A CN201410815764.6A CN201410815764A CN105789528A CN 105789528 A CN105789528 A CN 105789528A CN 201410815764 A CN201410815764 A CN 201410815764A CN 105789528 A CN105789528 A CN 105789528A
- Authority
- CN
- China
- Prior art keywords
- fiber
- fibre
- battery separator
- preparation
- temperature
- 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.)
- Pending
Links
Classifications
-
- 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
- Y02E60/10—Energy storage using batteries
Landscapes
- Cell Separators (AREA)
Abstract
The invention relates to a preparation method of a PA/PP porous battery separator material. The preparation method comprises the following steps of selecting PA/PP bi-component composite fiber and single-component synthetic fiber, and cutting the PA/PP bi-component composite fiber and the single-component synthetic fiber to short fibers for use by a disc-type fiber cutting machine; carrying out pulping and defibering processing on the cut short fibers, cellulose fiber and inorganic fiber to prepare high-concentration fiber paste; taking water as a dispersing medium and alkyl sulfonate as a dispersing agent; carrying out hydraulic single-net dual-layer inclined-net formation by a central pulp distributor; drying the product to form the porous battery separator material after dehydration and squeezing. The material has excellent performance, and can be taken as a battery separator, a capacitor separator, a high-temperature insulation film and a high-temperature filtering material after processing such as sulfonation, grafting, high-temperature pressing and coating.
Description
Technical field
The present invention relates to porous battery diaphragm material preparing technical field, particularly to the preparation method of a kind of PA/PP porous battery diaphragm material.
Background technology
Along with IT electronic industry, new-energy automobile, energy storage industry fast development, secondary power supply is just in vigorous growth trend.Battery diaphragm is as one of the critical material of secondary power supply, and it acts on ever more important, and therefore the manufacture of battery diaphragm material also causes people increasingly to pay attention to.
Current secondary battery membrane material preparation method mainly includes phase inversion, leaching, pulling method, fiber dry carding, fiber wet papermaking molding etc., wherein phase inversion, leaching, pulling method are mainly used to prepare lithium ion battery separator, this kind of battery diaphragm is two-dimensional structure, the defects such as temperature tolerance difference and thermal contraction is big, poor stability, porosity are low, electrolyte impregnability difference, also exist the defect of self in guaranteeing lithium ion battery security and service life.Dry carding molding is mainly used to prepare alkaline secondary cell diaphragm, there is fiber poor dispersion, skewness in this kind of battery diaphragm, the instructions for use of power type, high power capacity, high magnification alkaline battery cannot be met, easily cause the problem such as battery consistency difference, short circuit ratio height.Wet papermaking technology is adopted to produce porous battery diaphragm material, the extraordinary application requirement meeting alkaline battery, lithium ion battery, ultracapacitor, high-temperature insulation electronic component and high temperature filtration of diaphragm material that this kind of method produces, but due to problems such as material selections, although there being employing wet papermaking technology to produce porous battery diaphragm material at present, mostly it is adopt single net monolayer molding, then MULTILAYER COMPOSITE, or adopt double; two net two-layered, formed, the problems such as equipment investment, comprehensive production cost so can be caused higher.
Summary of the invention
Present invention aim to overcome that the deficiencies in the prior art, it is provided that a kind of technique is simple, reasonable, the preparation method of the porous battery diaphragm material of low cost.
A kind of preparation method of PA/PP porous battery diaphragm material:
(1) composite fibre and the one pack system synthetic fibers selecting fibre diameter to be 4 μm～8 μm, adopt disc type fibre cutting machine to be cut into the chopped fiber that length is 1mm～8mm standby；
(2) by the chopped fiber of well cutting and cellulose fibre, inorfil discongests process through making beating, prepares into concentration cellulose slurry, and with water for disperse medium, alkylsulfonate is dispersant；
(3) center pulp distributor hydraulic list net Double-layer oblique net forming is adopted；
(4), after dewatering press, dry in 100 DEG C～140 DEG C baking ovens and make porous battery diaphragm material.
Wherein said one pack system synthetic fibers are one or more in polypropylene fibre, polyester fiber, aramid fiber, polyimide fiber；Described cellulose fibre is nano-scale fiber cellulose fiber；Described inorfil is one or more in Zirconium oxide fibre, alumina fibre, magnesia fibers.
In mass fraction, wherein bicomponent composite fibre is 50%～100%；One pack system synthetic fibers are 20～100%；Cellulose fibre is 0～100%；Inorfil is 0～25%.
The porous battery diaphragm material obtained by above-mentioned preparation method, after the modes such as such as sulfonation process, grafting process, high temperature compacting and coating process process, it is possible to carry out extensive use as alkaline battery separator, lithium ion battery separator, diaphragm of supercapacitor, high-temperature insulation film and high-temperature-resistant filtering material.
Present invention have the advantage that
(1) porous battery diaphragm material prepared by the present invention is adopted, there is the chemical stability of excellence and very big specific surface area, because the fibrous material that the present invention adopts has bicomponent composite fibre, utilizing the low melting point part in fiber to carry out adhesion between fiber, in preparation process, adhesive-free adds.
(2) porous battery diaphragm material prepared by the present invention is adopted, it has uniform pore size distribution, and pore structure is three-dimensional netted, because the present invention adopts the advanced wet papermaking technology of single net Double-layer oblique net forming, again due to chopped fiber that fiber is through discongesting process, it is effectively guaranteed the uniformity dispersion of fiber, cross-distribution, it is effectively guaranteed uniformity and the tridimensional network in hole, and it is effectively increased the intensity of porous battery diaphragm material, this overcome the minimum living liquid rate preparing lithium ion battery separator at present, low porosity, the shortcoming that high short circuit ratio etc. are fatal, effectively raise safety and the cycle performance of lithium ion battery.
(3) porous battery diaphragm material prepared by the present invention is adopted, there is the resistance to elevated temperatures of excellence, this is because material of the present invention contains polyester component fiber, cellulose fibre or inorfil in constituting, these fibers have played skeletal support effect, battery diaphragm prepared by the porous battery diaphragm material therefore prepared is compared additive method and is had good resistance to elevated temperatures, has obvious advantage in ensureing the high temperature safe performance of battery.
Detailed description of the invention
Embodiment 1
(1) PA/PP composite fibre and the polyester fiber selecting fibre diameter to be 5 μm, adopts disc type fibre cutting machine to be cut into the chopped fiber that length is 2mm standby；
(2) chopped fiber step (1) prepared and cellulose fibre, alumina fibre discongests process through making beating, prepares into concentration cellulose slurry, and with water for disperse medium, dodecyl sodium sulfate is dispersant.
(3) fibre stuff step (2) prepared, by center pulp distributor equipressure starching, through hydrodynamic inclined-wire stock discharge box, carries out single net Double-layer oblique net forming.
(4), after dewatering press, in 120 DEG C of baking ovens, the porous battery diaphragm material that surface density is 40g/m2 is prepared in drying.
Claims (2)
1. the preparation method characteristic of a PA/PP porous battery diaphragm material is in that:
(1) composite fibre and the one pack system synthetic fibers selecting fibre diameter to be 4 μm～8 μm, adopt disc type fibre cutting machine to be cut into the chopped fiber that length is 1mm～8mm standby；
(2) by the chopped fiber of well cutting and cellulose fibre, inorfil discongests process through making beating, prepares into concentration cellulose slurry, and with water for disperse medium, alkylsulfonate is dispersant；
(3) center pulp distributor hydraulic list net Double-layer oblique net forming is adopted；
(4), after dewatering press, dry in 100 DEG C～140 DEG C baking ovens and make porous battery diaphragm material,
Wherein said one pack system synthetic fibers are one or more in polypropylene fibre, polyester fiber, aramid fiber, polyimide fiber；Described cellulose fibre is nano-scale fiber cellulose fiber；Described inorfil is one or more in Zirconium oxide fibre, alumina fibre, magnesia fibers,
In mass fraction, wherein bicomponent composite fibre is 50%～100%；One pack system synthetic fibers are 20～100%；Cellulose fibre is 0～100%；Inorfil is 0～25%,
The porous battery diaphragm material obtained by above-mentioned preparation method, after the modes such as such as sulfonation process, grafting process, high temperature compacting and coating process process, it is possible to as alkaline battery separator, lithium ion battery separator, diaphragm of supercapacitor, high-temperature insulation film and high-temperature-resistant filtering material.
2. the porous battery diaphragm material that preparation method as claimed in claim 1 obtains, after the modes such as such as sulfonation process, grafting process, high temperature compacting and coating process process, it is possible to as alkaline battery separator, lithium ion battery separator, diaphragm of supercapacitor, high-temperature insulation film and high-temperature-resistant filtering material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410815764.6A CN105789528A (en) | 2014-12-24 | 2014-12-24 | Preparation method of PA/PP porous battery separator material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410815764.6A CN105789528A (en) | 2014-12-24 | 2014-12-24 | Preparation method of PA/PP porous battery separator material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105789528A true CN105789528A (en) | 2016-07-20 |
Family
ID=56377449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410815764.6A Pending CN105789528A (en) | 2014-12-24 | 2014-12-24 | Preparation method of PA/PP porous battery separator material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105789528A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113013549A (en) * | 2021-01-28 | 2021-06-22 | 清华大学 | Coating material for light-weight lithium ion battery diaphragm, preparation method of coating material and light-weight lithium ion battery composite diaphragm |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337603A (en) * | 2013-07-16 | 2013-10-02 | 莱州联友金浩新型材料有限公司 | Porous battery diaphragm material and manufacturing method and application of porous battery diaphragm material |
-
2014
- 2014-12-24 CN CN201410815764.6A patent/CN105789528A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337603A (en) * | 2013-07-16 | 2013-10-02 | 莱州联友金浩新型材料有限公司 | Porous battery diaphragm material and manufacturing method and application of porous battery diaphragm material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113013549A (en) * | 2021-01-28 | 2021-06-22 | 清华大学 | Coating material for light-weight lithium ion battery diaphragm, preparation method of coating material and light-weight lithium ion battery composite diaphragm |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103337603B (en) | Porous battery diaphragm material and manufacturing method and application of porous battery diaphragm material | |
| CN103100264B (en) | Battery and capacitor diaphragm filter material formed by wet nonwoven fabrics and preparation method of filter material | |
| CN102728144B (en) | Wet papermaking forming battery capacitor diaphragm filtering material and preparation method thereof | |
| CN105144431B (en) | Three area's battery separators | |
| CN104157815B (en) | A kind of Bacterial cellulose porous membrane and preparation method thereof | |
| CN107004810B (en) | Battery separator with controlled pore structure | |
| CN103137931B (en) | Diaphragm paper and preparation method and application thereof | |
| CN104157812A (en) | Lithium ion battery diaphragm, preparation method of lithium ion battery diaphragm and lithium ion battery | |
| CN106537537B (en) | Electrical storage device partition and the electrical storage device for using the partition | |
| CN102522514B (en) | High-temperature resistant micropore thin film material and application thereof | |
| CN105870383B (en) | A kind of battery capacitor barrier film and preparation method thereof | |
| CN104885257A (en) | Methods of making single-layer lithium ion battery separators having nanofiber and microfiber components | |
| CN106463673A (en) | Battery separators having low apparent density | |
| CN107431173A (en) | Battery separator comprising inorganic particle | |
| CN109457533A (en) | A kind of preparation method regenerating aramid fiber extrusion coating paper | |
| CN103515562B (en) | A kind of novel lithium ion battery diaphragm and preparation method thereof | |
| CN101728504B (en) | Lithium ion battery diaphragm flexible substrate by wet papermaking and manufacturing method thereof | |
| CN104871341A (en) | Versatile single-layer lithium ion battery separators having nanofiber and microfiber components | |
| CN105789526A (en) | Preparation method of PP/PE porous battery separator material | |
| CN110429227A (en) | A kind of preparation method of fibrous type lithium ion battery separator | |
| CN104577011B (en) | A kind of battery diaphragm reinforcing material | |
| CN105789528A (en) | Preparation method of PA/PP porous battery separator material | |
| CN103700800B (en) | A kind of lithium ion battery separator manufacture method | |
| CN106229448B (en) | A kind of lithium battery diaphragm paper and preparation method thereof | |
| JP2010098074A (en) | Separator for electric storage device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160720 |
|
| WD01 | Invention patent application deemed withdrawn after publication |