CN204998056U - Soft -packing polymer lithium ion battery is polypropylene for membrane specially - Google Patents
Soft -packing polymer lithium ion battery is polypropylene for membrane specially Download PDFInfo
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- CN204998056U CN204998056U CN201520614096.0U CN201520614096U CN204998056U CN 204998056 U CN204998056 U CN 204998056U CN 201520614096 U CN201520614096 U CN 201520614096U CN 204998056 U CN204998056 U CN 204998056U
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- Prior art keywords
- layer
- polypropylene
- ion battery
- lithium ion
- soft
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 75
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 74
- -1 polypropylene Polymers 0.000 title claims abstract description 47
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 22
- 229920000642 polymer Polymers 0.000 title claims abstract description 22
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 239000012528 membrane Substances 0.000 title abstract description 8
- 238000012856 packing Methods 0.000 title abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 31
- 239000004831 Hot glue Substances 0.000 abstract description 2
- 239000011230 binding agent Substances 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract 1
- 239000004677 Nylon Substances 0.000 description 15
- 229920001778 nylon Polymers 0.000 description 15
- 229920001684 low density polyethylene Polymers 0.000 description 6
- 239000004702 low-density polyethylene Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 3
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 2
- 229920000571 Nylon 11 Polymers 0.000 description 2
- 229920000299 Nylon 12 Polymers 0.000 description 2
- 229920003189 Nylon 4,6 Polymers 0.000 description 2
- 229920002292 Nylon 6 Polymers 0.000 description 2
- 229920000305 Nylon 6,10 Polymers 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- 229920000572 Nylon 6/12 Polymers 0.000 description 2
- 229920000007 Nylon MXD6 Polymers 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- HEHINIICWNIGNO-UHFFFAOYSA-N oxosilicon;titanium Chemical compound [Ti].[Si]=O HEHINIICWNIGNO-UHFFFAOYSA-N 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Laminated Bodies (AREA)
Abstract
The utility model relates to a soft -packing polymer lithium ion battery is polypropylene for membrane specially, silicate including first silication layer, a modified polypropylene layer, the 2nd modified polypropylene layer, second layer, this polypropylene materials has a lamellar structure, soft -packing polymer lithium ion battery is polypropylene for membrane specially is by interior first silication layer, a modified polypropylene layer, the 2nd modified polypropylene layer, the second silication layer of being in proper order outside to. The utility model discloses the polypropylene of well preparation has excellent heat sealability, anti tensile properties, and the polypropylene materials of this preparation have with binder or the strong cohesiveness of hot melt adhesive film, be difficult for the layering after compound, satisfy the polypropylene materials requirement of polymer lithium ion battery soft -packing complex film selection, can regard as this type lithium ion battery to pack the heat -seal layer material in the complex film.
Description
Technical field
The utility model relates to battery packaging material field, particularly the special film polypropylene material of a kind of soft-packaged polymer lithium ion battery.
Background technology
Polymer Li-ion battery wrapping film material has a very important role to guarantee polymer Li-ion battery quality, its core is that the material such as the water vapour prevented in external environment, oxygen enters and reacts to generate HF solution or be oxidized with electrolyte and changes electrolyte fundamental property, battery energy storage efficiency is caused to reduce, punching, discharge level decline, reduce the service life of polymer Li-ion battery, therefore very strict to the requirement of wrapping film, wrapping film should have heat sealability, barrier property, anti-wear performance and cold-formed property.
Polymer Li-ion battery wrapping film is mainly made up of hot sealing layer, barrier layer and wearing layer, and the requirement of every layer material is different and all need to meet polymer Li-ion battery wrapping film to the polyfunctional requirement of packaging material.Polypropylene is owing to having good mechanical property and moulding processability, be widely used in every field, in the special film of polymer Li-ion battery, in hot sealing layer material, also great majority select polypropylene, but general polypropylene toughness is bad, electrostatic degree is high, printing and cohesive poor, composite membrane combined material can not being applicable to completely to its requirement, how selecting or polypropylene material that processability is excellent is the technical problem extremely paid close attention in polymer Li-ion battery wrapping film industry to improving the performances such as the heat sealability of composite membrane or other obstruct, bonding.
Utility model content
For solving the problems of the technologies described above, the utility model provides a kind of soft-packaged polymer lithium ion battery special film polypropylene material.This special film polypropylene material has excellent heat sealability, simultaneously the active site of polypropylene surface excitation of plasma can carry out strong compound, not stratified well with other high polymers, hot melt adhesive film or binding agent, and this polypropylene material can be applied as preparing one of raw material in polymer Li-ion battery external packing composite membrane.
The technical solution of the utility model is: the special film polypropylene of a kind of soft-packaged polymer lithium ion battery, it is characterized in that, comprise the first disilicide layer, the first modified polypropene layer, the second modified polypropene layer, the second disilicide layer, this polypropylene material has layer structure, and the special film polypropylene of described soft-packaged polymer lithium ion battery is followed successively by the first disilicide layer, the first modified polypropene layer, the second modified polypropene layer, the second disilicide layer from inside to outside.
As a kind of preferred version of the present utility model, in described first disilicide layer, the second disilicide layer, material is one in fluorine Si oxide, titanium silicon oxide, ethyl orthosilicate, silica or combination, and thickness is 10-5000nm.
As a kind of preferred version of the present utility model, described first modified polypropene layer material is the one or more combination in polypropylene and low density polyethylene (LDPE), ethylene-vinyl acetate copolymer, polyvinyl butyral resin.
As a kind of preferred version of the present utility model, the thickness of described first modified polypropene layer is 10-50 μm, and the ratio of polypropylene and hybrid resin is 99/1-20/80.
As a kind of preferred version of the present utility model, described second modified polypropene layer material is polypropylene and nylon 6, nylon66 fiber, nylon 11, nylon 12, NYLON610, nylon 612, nylon 1010, nylon 46, nylon 7, nylon 9, nylon 13, one in nylon 6I, nylon 9 T, special nylon MXD 6 or its combine.
As a kind of preferred version of the present utility model, in described second modified polypropene layer, the mixing ratio of polypropylene and nylon is 99/1-30/70, and the thickness of the second modified polypropene layer is 10-50 μm.
After adopting technique scheme, the beneficial effects of the utility model are: first, by the first modified polypropene layer and the second modified polypropene layer hot melt coextru-lamination, improve the toughness of polypropylene material, first polypropylene modification layer improves the heat sealability of polypropylene material, second polypropylene modification layer improves polyacrylic puncture-resistant performance, comprehensively makes polypropylene material in composite membrane is shaping, have better processing characteristics; Secondly, at the disilicide layer of polypropylene material two-sided increase application plasma treatment, improve the molecular radical moving point on its surface, the adhesion strength of polypropylene material and other materials can be improved, processing is simple and that polypropylene material and other materials can be made to form composite membrane is not stratified, has stronger barrier simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein, 1 is the first disilicide layer; 2 is the first modified polypropene layer; 3 is the second modified polypropene layer; 4 is the second disilicide layer.
Detailed description of the invention
Below in conjunction with detailed description of the invention, illustrate the utility model further.
Embodiment
As shown in Figure 1, the utility model provides the special film polypropylene of a kind of soft-packaged polymer lithium ion battery, comprise the first disilicide layer 1, first modified polypropene layer 2, second modified polypropene layer 3, second disilicide layer 4, this polypropylene material has layer structure, and the special film polypropylene of described soft-packaged polymer lithium ion battery is followed successively by the first disilicide layer 1, first modified polypropene layer 2, second modified polypropene layer 3, second disilicide layer 4 from inside to outside.
In described first disilicide layer 1, second disilicide layer 4, material is one in fluorine Si oxide, titanium silicon oxide, ethyl orthosilicate, silica or combination, and thickness is 10-5000nm.
Described first modified polypropene layer 2 material is the one or more combination in polypropylene and low density polyethylene (LDPE), ethylene-vinyl acetate copolymer, polyvinyl butyral resin.
The thickness of described first modified polypropene layer 2 is 10-50 μm, and the ratio of polypropylene and hybrid resin is 99/1-20/80.In polypropylene, add a certain proportion of low density polyethylene (LDPE), ethylene-vinyl acetate copolymer, polyvinyl butyral resin can improve polyacrylic heat sealability.
Described second modified polypropene layer 3 material is polypropylene and nylon 6, nylon66 fiber, nylon 11, nylon 12, NYLON610, nylon 612, nylon 1010, nylon 46, nylon 7, nylon 9, nylon 13, one in nylon 6I, nylon 9 T, special nylon MXD 6 or its combine.
In described second modified polypropene layer 3, the mixing ratio of polypropylene and nylon is 99/1-30/70, and the thickness of the second modified polypropene layer is 10-50 μm.In polypropylene, add a certain proportion of nylon can improve polyacrylic toughness and puncture-resistant performance.
Product of the present utility model reaches following index through mensuration:
1. heat seal strength test: PP interlaminar strength is more than or equal to 80N/15mm;
2. tensile strength test: tensile strength is greater than 30MPa.
3. impact strength test: be greater than 10 × 10
-2kJ/m
2.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (1)
1. the special film polypropylene of soft-packaged polymer lithium ion battery, it is characterized in that, comprise the first disilicide layer, the first modified polypropene layer, the second modified polypropene layer, the second disilicide layer, this polypropylene material has layer structure, and the special film polypropylene of described soft-packaged polymer lithium ion battery is followed successively by the first disilicide layer, the first modified polypropene layer, the second modified polypropene layer, the second disilicide layer from inside to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520614096.0U CN204998056U (en) | 2015-08-16 | 2015-08-16 | Soft -packing polymer lithium ion battery is polypropylene for membrane specially |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520614096.0U CN204998056U (en) | 2015-08-16 | 2015-08-16 | Soft -packing polymer lithium ion battery is polypropylene for membrane specially |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204998056U true CN204998056U (en) | 2016-01-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520614096.0U Active CN204998056U (en) | 2015-08-16 | 2015-08-16 | Soft -packing polymer lithium ion battery is polypropylene for membrane specially |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204998056U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105015091A (en) * | 2015-08-16 | 2015-11-04 | 苏州锂盾储能材料技术有限公司 | Polypropylene for special flexible packaging films of polymer lithium ion batteries and preparation process thereof |
| CN110395032A (en) * | 2019-07-20 | 2019-11-01 | 杨敏 | A kind of lithium ion battery flexible package innermost layer polypropylene screen |
| CN111361250A (en) * | 2020-04-13 | 2020-07-03 | 常州斯威克光伏新材料有限公司 | Double-sided heat-sealing flexible packaging film for lithium battery |
-
2015
- 2015-08-16 CN CN201520614096.0U patent/CN204998056U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105015091A (en) * | 2015-08-16 | 2015-11-04 | 苏州锂盾储能材料技术有限公司 | Polypropylene for special flexible packaging films of polymer lithium ion batteries and preparation process thereof |
| CN110395032A (en) * | 2019-07-20 | 2019-11-01 | 杨敏 | A kind of lithium ion battery flexible package innermost layer polypropylene screen |
| CN111361250A (en) * | 2020-04-13 | 2020-07-03 | 常州斯威克光伏新材料有限公司 | Double-sided heat-sealing flexible packaging film for lithium battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 759, Zhizhou Avenue, Huaxi Street, Changxing County, Huzhou City, Zhejiang Province 313000 Patentee after: Zhejiang Lidun Energy Storage Material Technology Co.,Ltd. Country or region after: China Address before: No. 6, Anmin Road, East Bridge, Huangdai Town, Xiangcheng District, Suzhou City, Jiangsu Province, 215152 Patentee before: SUZHOU LIDUN ENERGY STORAGE MATERIAL TECHNOLOGY Co.,Ltd. Country or region before: China |