CN202930456U - Ultra-high molecular weight polyethylene composite polyoxyethylene and polyvinylidene fluoride composite membrane - Google Patents
Ultra-high molecular weight polyethylene composite polyoxyethylene and polyvinylidene fluoride composite membrane Download PDFInfo
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- CN202930456U CN202930456U CN2012204879442U CN201220487944U CN202930456U CN 202930456 U CN202930456 U CN 202930456U CN 2012204879442 U CN2012204879442 U CN 2012204879442U CN 201220487944 U CN201220487944 U CN 201220487944U CN 202930456 U CN202930456 U CN 202930456U
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- high molecular
- polyoxyethylene
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- ultra high
- micropore
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- 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
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Abstract
The utility model discloses an ultra-high molecular weight polyethylene composite polyoxyethylene and polyvinylidene fluoride composite membrane. The composite membrane comprises a polyolefin resin matrix, ultra-high molecular weight polyethylene layers, micropores A, polyoxyethylene hydrophilic layers, micropores B, polyvinylidene fluoride coatings and micropores C, wherein the ultra-high molecular weight polyethylene layers are respectively coated on the upper and lower surfaces of the polyolefin resin matrix, the micropores A are formed in the ultra-high molecular weight polyethylene layers, the polyoxyethylene hydrophilic layers are respectively coated on the surfaces of the ultra-high molecular weight polyethylene layers, the micropores B are formed in the polyoxyethylene hydrophilic layers, the polyvinylidene fluoride coatings are respectively coated on the polyoxyethylene hydrophilic layers, and the micropores C are formed in the polyvinylidene fluoride coatings. The ultra-high molecular weight polyethylene composite polyoxyethylene and polyvinylidene fluoride composite membrane adopts the ultra-high molecular weight polyethylene layers and the polyvinylidene fluoride coatings, so that the service life and usability of a lithium battery are improved, and the high temperature resistance and safety of the membrane are increased.
Description
Technical field
The utility model belongs to polymeric material field, relates in particular to the compound polyoxyethylene of a kind of ultra high molecular polyethylene and Kynoar composite diaphragm.
Background technology
Polyethylene is one of maximum, most widely used plastics variety of current production rate, accounts for 30% of world's plastics total output.Wherein, LDPE, HDPE and be called as the poly LLDPE of the third generation etc. and all belong to the thermoplasticity general-purpose plastics have molecular weight only up to the UHMWPE more than 1,500,000, use as engineering plastics because physical and mechanical property is excellent.The high molecular weight (molecular weight of HDPE only has 2～300,000 usually) of UHMWPE is given its excellent serviceability, and belong to thermoplastic engineering plastic moderate, function admirable, it has almost concentrated the advantage of various plastics, the combination property such as have unrivaled wear-resisting, shock-resistant, the self-lubricating of common polythene and other engineering plastics, corrosion-resistant, impact-absorbing energy, low temperature resistant, health is nontoxic, be difficult for adhering to, be difficult for suction, density is less.In fact, also do not have a kind of simple macromolecular material to have so numerous excellent properties concurrently at present.Ultra-high molecular weight polyethylene has been applied to numerous areas at present, but not yet is applied on lithium battery diaphragm.Barrier film main function in battery material is that isolated both positive and negative polarity is to prevent the problems such as battery self discharging and the two poles of the earth short circuit, the lithium ion battery separator material can be divided into: weave film, nowoven membrane (nonwoven fabrics), microporous barrier, composite membrane, diaphragm paper, several classes such as laminate, but the corrosion of electrolyte and the variation of temperature have been full of in the operational environment due to battery, so when long-term the use, stability in use and the heat-resisting quantity of above-mentioned various lithium battery diaphragms are relatively poor, are unfavorable for the use of the long-term stability of battery.
The utility model content
The purpose of this utility model is to utilize at the compound polyoxyethylene of kind of ultra high molecular polyethylene and Kynoar composite diaphragm, and the stability in use and the heat-resisting quantity that are intended to solve existing lithium battery diaphragm are relatively poor, is unfavorable for the problem of use of the long-term stability of battery.
The purpose of this utility model is to provide the compound polyoxyethylene of a kind of ultra high molecular polyethylene and Kynoar composite diaphragm, and described composite diaphragm comprises: vistanex matrix, ultra high molecular polyethylene layer, micropore A, polyoxyethylene hydrophilic layer, micropore B, Kynoar coat, micropore C; Described vistanex matrix upper and lower surface arranges described ultra high molecular polyethylene layer, described micropore A is set on described ultra high molecular polyethylene layer, described ultra high molecular polyethylene layer surface arranges described polyoxyethylene hydrophilic layer, described micropore B is set on described polyoxyethylene hydrophilic layer, described polyoxyethylene hydrophilic layer surface arranges described Kynoar coat, and described micropore C is set on described Kynoar coat.
Further, the aperture of described micropore is 0.026-0.038 μ m.
Further, described ultra high molecular polyethylene layer thickness is 12-38 μ m.
The compound polyoxyethylene of ultra high molecular polyethylene of the present utility model and Kynoar composite diaphragm, this composite diaphragm comprises: vistanex matrix, ultra high molecular polyethylene layer, micropore A, polyoxyethylene hydrophilic layer, micropore B, Kynoar coat, micropore C; Vistanex matrix upper and lower surface arranges the ultra high molecular polyethylene layer, micropore A is set on the ultra high molecular polyethylene layer, ultra high molecular polyethylene layer surface arranges the polyoxyethylene hydrophilic layer, micropore B is set on the polyoxyethylene hydrophilic layer, polyoxyethylene hydrophilic layer surface arranges the Kynoar coat, and micropore C is set on the Kynoar coat.the compound polyoxyethylene of ultra high molecular polyethylene of the present utility model and Kynoar composite diaphragm, the polyoxyethylene coat can effectively improve the hydrophilic nmature of membrane surface, the Kynoar coat can make barrier film have heat-resisting quantity and fail safe (barrier film holes temperature is 200 degree), hot strength (＞150Mpa), make the working temperature of the applicable High Temperature Lithium Cell of barrier film, simultaneously Kynoar (PVDF) is again auxiliary material in the battery core processing procedure and compatible with the lithium cell chemical system, apply barrier film and can not affect the general charge-discharge performance of lithium battery, and can adsorb electrolyte, these characteristics can further wetting barrier films and are increased the barrier film liquid absorption, promote the lithium battery performance.When this composite diaphragm is worked in the electrolyte corrosive environment of battery, can keep good heat-resisting quantity and stability, thereby extended the useful life of battery, improved battery performance, and ensured lithium battery security reliability in use, can also effectively prevent the generation of the serious accidents such as lithium battery blast on fire.
Description of drawings
Fig. 1 is the compound polyoxyethylene of ultra high molecular polyethylene and the Kynoar composite diaphragm structural representation that the utility model provides.
In figure: 1, vistanex matrix; 2, ultra high molecular polyethylene layer; 21, micropore A; 3, polyoxyethylene hydrophilic layer; 31, micropore B; 4. Kynoar coat; 41, micropore C.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The utility model embodiment provides the compound polyoxyethylene of a kind of ultra high molecular polyethylene and Kynoar composite diaphragm, and composite diaphragm comprises: vistanex matrix, ultra high molecular polyethylene layer, micropore A, polyoxyethylene hydrophilic layer, micropore B, Kynoar coat, micropore C; Vistanex matrix upper and lower surface arranges the ultra high molecular polyethylene layer, micropore A is set on the ultra high molecular polyethylene layer, ultra high molecular polyethylene layer surface arranges the polyoxyethylene hydrophilic layer, micropore B is set on the polyoxyethylene hydrophilic layer, polyoxyethylene hydrophilic layer surface arranges the Kynoar coat, and micropore C is set on the Kynoar coat.
As the prioritization scheme of the utility model embodiment, the aperture of micropore is 0.026-0.038 μ m.
As the prioritization scheme of the utility model embodiment, the ultra high molecular polyethylene layer thickness is 12-38 μ m.
Referring to accompanying drawing 1, the compound polyoxyethylene of the utility model ultra high molecular polyethylene and Kynoar composite diaphragm are described in further detail.
The compound polyoxyethylene of ultra high molecular polyethylene of the present utility model and Kynoar composite diaphragm are provided with ultra high molecular polyethylene layer 2 in vistanex matrix 1 upper and lower surface, and arrange micropore A21 thereon, 0.026-0.038 μ m is adopted in micropore A21 aperture, and ultra high molecular polyethylene layer 2 thickness adopt 12-38 μ m; Be provided with polyoxyethylene hydrophilic layer 3 on ultra high molecular polyethylene layer 2, onesize aperture B31 is set on polyoxyethylene hydrophilic layer 3; Be provided with Kynoar coat 4 on polyoxyethylene hydrophilic layer 3, and be provided with the micropore C41 of same diameter on Kynoar coat 4, coat adopts poly-inclined to one side fluorine more than 300,000, and Kynoar coat 4 can make barrier film have heat-resisting quantity and fail safe.
The compound polyoxyethylene of ultra high molecular polyethylene of the present utility model and Kynoar composite diaphragm, this composite diaphragm comprises: vistanex matrix, ultra high molecular polyethylene layer, micropore A, polyoxyethylene hydrophilic layer, micropore B, Kynoar coat, micropore C; Vistanex matrix upper and lower surface arranges the ultra high molecular polyethylene layer, micropore A is set on the ultra high molecular polyethylene layer, ultra high molecular polyethylene layer surface arranges the polyoxyethylene hydrophilic layer, micropore B is set on the polyoxyethylene hydrophilic layer, polyoxyethylene hydrophilic layer surface arranges the Kynoar coat, and micropore C is set on the Kynoar coat.the compound polyoxyethylene of ultra high molecular polyethylene of the present utility model and Kynoar composite diaphragm, the polyoxyethylene coat can effectively improve the hydrophilic nmature of membrane surface, the Kynoar coat can make barrier film have heat-resisting quantity and fail safe (barrier film holes temperature is 200 degree), hot strength (＞150Mpa), make the working temperature of the applicable High Temperature Lithium Cell of barrier film, simultaneously Kynoar (PVDF) is again auxiliary material in the battery core processing procedure and compatible with the lithium cell chemical system, apply barrier film and can not affect the general charge-discharge performance of lithium battery, and can adsorb electrolyte, these characteristics can further wetting barrier films and are increased the barrier film liquid absorption, promote the lithium battery performance.When this composite diaphragm is worked in the electrolyte corrosive environment of battery, can keep good heat-resisting quantity and stability, thereby extended the useful life of battery, improved battery performance, and ensured lithium battery security reliability in use, can also effectively prevent the generation of the serious accidents such as lithium battery blast on fire.
The above is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (3)
1. the compound polyoxyethylene of ultra high molecular polyethylene and Kynoar composite diaphragm, it is characterized in that, described composite diaphragm comprises: vistanex matrix, ultra high molecular polyethylene layer, micropore A, polyoxyethylene hydrophilic layer, micropore B, Kynoar coat, micropore C;
Described vistanex matrix upper and lower surface arranges described ultra high molecular polyethylene layer, described micropore A is set on described ultra high molecular polyethylene layer, described ultra high molecular polyethylene layer surface arranges described polyoxyethylene hydrophilic layer, described micropore B is set on described polyoxyethylene hydrophilic layer, described polyoxyethylene hydrophilic layer surface arranges described Kynoar coat, and described micropore C is set on described Kynoar coat.
2. the compound polyoxyethylene of ultra high molecular polyethylene as claimed in claim 1 and Kynoar composite diaphragm, is characterized in that, the aperture of described micropore is 0.026-0.038 μ m.
3. the compound polyoxyethylene of ultra high molecular polyethylene as claimed in claim 1 and Kynoar composite diaphragm, is characterized in that, described ultra high molecular polyethylene layer thickness is 12-38 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204879442U CN202930456U (en) | 2012-09-24 | 2012-09-24 | Ultra-high molecular weight polyethylene composite polyoxyethylene and polyvinylidene fluoride composite membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204879442U CN202930456U (en) | 2012-09-24 | 2012-09-24 | Ultra-high molecular weight polyethylene composite polyoxyethylene and polyvinylidene fluoride composite membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202930456U true CN202930456U (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204879442U Expired - Fee Related CN202930456U (en) | 2012-09-24 | 2012-09-24 | Ultra-high molecular weight polyethylene composite polyoxyethylene and polyvinylidene fluoride composite membrane |
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|---|---|
| CN (1) | CN202930456U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105355813A (en) * | 2015-12-14 | 2016-02-24 | 苏州锂盾储能材料技术有限公司 | Lithium ion battery diaphragm material and preparation method thereof |
| CN105355815A (en) * | 2015-12-14 | 2016-02-24 | 苏州锂盾储能材料技术有限公司 | Preparation method of lithium ion battery high-heat-resistance and high-infiltration diaphragm |
-
2012
- 2012-09-24 CN CN2012204879442U patent/CN202930456U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105355813A (en) * | 2015-12-14 | 2016-02-24 | 苏州锂盾储能材料技术有限公司 | Lithium ion battery diaphragm material and preparation method thereof |
| CN105355815A (en) * | 2015-12-14 | 2016-02-24 | 苏州锂盾储能材料技术有限公司 | Preparation method of lithium ion battery high-heat-resistance and high-infiltration diaphragm |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20180924 |