CN106192369A - 一种无纺布基pvdf膜的制备方法 - Google Patents
一种无纺布基pvdf膜的制备方法 Download PDFInfo
- Publication number
- CN106192369A CN106192369A CN201610699400.5A CN201610699400A CN106192369A CN 106192369 A CN106192369 A CN 106192369A CN 201610699400 A CN201610699400 A CN 201610699400A CN 106192369 A CN106192369 A CN 106192369A
- Authority
- CN
- China
- Prior art keywords
- membrane
- nonwoven fabric
- composite membrane
- fabric base
- barrier film
- 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
- 239000012528 membrane Substances 0.000 title claims abstract description 27
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 16
- 229920002981 polyvinylidene fluoride Polymers 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000002131 composite material Substances 0.000 claims abstract description 21
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000004888 barrier function Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 13
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 12
- 239000002033 PVDF binder Substances 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000005352 clarification Methods 0.000 claims abstract description 4
- 239000008367 deionised water Substances 0.000 claims abstract description 4
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 4
- 230000004048 modification Effects 0.000 claims abstract description 4
- 238000012986 modification Methods 0.000 claims abstract description 4
- 230000007935 neutral effect Effects 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims abstract description 4
- 235000011121 sodium hydroxide Nutrition 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 238000001291 vacuum drying Methods 0.000 claims abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000004743 Polypropylene Substances 0.000 description 7
- 229920001155 polypropylene Polymers 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000002585 base Substances 0.000 description 5
- 229920000098 polyolefin Polymers 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000037427 ion transport Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
-
- 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
- H01M50/411—Organic material
-
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Cell Separators (AREA)
Abstract
一种无纺布基PVDF膜的制备方法，步骤包括：制备复合膜，将2gＰＶＤＦ粉末分批次加入到100mL丁酮中，强力搅拌，用５００目筛网过滤上述溶液3次，获得均匀澄清的涂覆液，将ＰＰ无纺布浸入涂覆液中２０ｓ，迅速取出，在丁酮气氛中干燥3ｈ，即得无纺布基ＰＶＤＦ复合膜；复合膜的改性，配置乙醇和水比例为１∶１的氢氧化钾（质量分数为１５％）隔膜处理液，在35℃下对上述隔膜碱处理100min，处理后的隔膜用去离子水反复浸泡，直至中性，最后于８０℃真空干燥６ｈ获得改性后的复合隔膜。本发明的有益效果是：反应条件温和，生产成本较低，可重复性好,可以改善隔膜的亲液性和吸液性，而对隔膜的结构和形貌影响较小，方法简单有效。
Description
技术领域
本发明涉及材料合成方法，具体的是一种无纺布基PVDF膜的制备方法。
背景技术
因具有工作电压高、能量密度大、循环寿命长和自放电低等优点，锂离子电池已成为各类便携电子产品的主力电源。作为其重要组成部分，隔膜能够防止正、负极短路，在电池充放电时提供离子运输的通道，在事故时通过闭孔来阻隔离子传导，防止事故发生。因此，隔膜材料应具备优良的耐溶剂性、离子导电性、机械强度和耐热性。近年来，商品化的锂电隔膜以聚乙烯（ＰＥ）和聚丙烯（ＰＰ）微孔膜为主，由干法单向、双向拉伸和湿法等工艺生产。
但是，材料自身属性导致上述隔膜的破膜温度较低，如ＰＥ膜约１４０℃，ＰＰ膜约１６０℃，电池使用不当时极易造成隔膜收缩、熔化，导致电池短路，且聚烯烃材料对极性电解液的润湿性差，限制了电池的性能发挥。为了改善隔膜的性能，人们选用新的材料和工艺制备锂电隔膜，如聚偏氟乙烯（ＰＶＤＦ）涂覆聚烯烃微孔膜，ＰＶＤＦ／陶瓷涂覆聚烯烃微孔膜等。但是，ＰＶＤＦ复合膜孔结构的控制非常复杂，且该材料本身的疏水性以及聚烯烃微孔膜的低孔隙率，导致上述复合膜的性能不佳。
发明内容
本发明所要解决的技术问题在于提供一种无纺布基PVDF膜的制备方法，提供一种新的制备方法。
本发明采用的制备方法，包括如下步骤：
a、制备复合膜，将2gＰＶＤＦ粉末分批次加入到100mL丁酮中，强力搅拌，用５００目筛网过滤上述溶液3次，获得均匀澄清的涂覆液，将ＰＰ无纺布浸入涂覆液中２０ｓ，迅速取出，在丁酮气氛中干燥3ｈ，即得无纺布基ＰＶＤＦ复合膜；
b、 复合膜的改性，配置乙醇和水比例为１∶１的氢氧化钾（质量分数为１５％）隔膜处理液，在35℃下对上述隔膜碱处理100min，处理后的隔膜用去离子水反复浸泡，直至中性，最后于８０℃真空干燥６ｈ获得改性后的复合隔膜。
本发明的有益效果是：反应条件温和，生产成本较低，可重复性好, 可以改善隔膜的亲液性和吸液性，而对隔膜的结构和形貌影响较小，方法简单有效。
具体实施方式
以下结合实例进一步说明本发明的内容，由技术常识可知，本发明也可通过其它的不脱离本发明技术特征的方案来描述，因此所有在本发明范围内或等同本发明范围内的改变均被本发明包含。
实施例：
a、制备复合膜，将2gＰＶＤＦ粉末分批次加入到100mL丁酮中，强力搅拌，用５００目筛网过滤上述溶液3次，获得均匀澄清的涂覆液，将ＰＰ无纺布浸入涂覆液中２０ｓ，迅速取出，在丁酮气氛中干燥3ｈ，即得无纺布基ＰＶＤＦ复合膜。
b、 复合膜的改性，配置乙醇和水比例为１∶１的氢氧化钾（质量分数为１５％）隔膜处理液，在35℃下对上述隔膜碱处理100min，处理后的隔膜用去离子水反复浸泡，直至中性，最后于８０℃真空干燥６ｈ获得改性后的复合隔膜。
通过实验，ＰＰ无纺布表现出超强的憎水性，接触角达到１４０°以上，经过ＰＶＤＦ涂覆后亲液性有所提高，表现为接触角下降至约１１０°。而经过碱处理后复合膜的亲液性显著改善，接触角降至４０°，隔膜的吸液率也发生变化，由ＰＰ无纺布的７０％提高到复合膜的３００％左右。说明碱处理本发明所制备ＰＶＤＦ复合膜确实可以提高隔膜的亲液性，这为离子透膜传递提供了良好的界面条件。
Claims (1)
1.一种无纺布基PVDF膜的制备方法，包括如下步骤：
a、制备复合膜，将2gＰＶＤＦ粉末分批次加入到100mL丁酮中，强力搅拌，用５００目筛网过滤上述溶液3次，获得均匀澄清的涂覆液，将ＰＰ无纺布浸入涂覆液中２０ｓ，迅速取出，在丁酮气氛中干燥3ｈ，即得无纺布基ＰＶＤＦ复合膜；
b、 复合膜的改性，配置乙醇和水比例为１∶１的氢氧化钾（质量分数为１５％）隔膜处理液，在35℃下对上述隔膜碱处理100min，处理后的隔膜用去离子水反复浸泡，直至中性，最后于８０℃真空干燥６ｈ获得改性后的复合隔膜。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610699400.5A CN106192369A (zh) | 2016-08-22 | 2016-08-22 | 一种无纺布基pvdf膜的制备方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610699400.5A CN106192369A (zh) | 2016-08-22 | 2016-08-22 | 一种无纺布基pvdf膜的制备方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106192369A true CN106192369A (zh) | 2016-12-07 |
Family
ID=57522132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610699400.5A Pending CN106192369A (zh) | 2016-08-22 | 2016-08-22 | 一种无纺布基pvdf膜的制备方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106192369A (zh) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109585759A (zh) * | 2018-10-31 | 2019-04-05 | 东莞理工学院 | 一种类凝胶结构锂电隔膜、制备方法及全固态锂电池 |
| CN109809667A (zh) * | 2019-03-27 | 2019-05-28 | 武汉理工大学 | 污泥脱除水净化装置 |
| CN114024096A (zh) * | 2021-06-17 | 2022-02-08 | 四川启睿克科技有限公司 | 一种电池隔膜的制备方法及电池隔膜 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489184A (zh) * | 2011-11-28 | 2012-06-13 | 北京碧水源膜科技有限公司 | 具有永久亲水性的聚偏氟乙烯中空纤维微滤膜及制备方法 |
| CN103613780A (zh) * | 2013-11-14 | 2014-03-05 | 中国科学院化学研究所 | 疏水性聚合物微孔膜的表面改性方法 |
| CN104309232A (zh) * | 2014-10-27 | 2015-01-28 | 江西先材纳米纤维科技有限公司 | 聚酰亚胺纳米纤维增强的耐酸耐碱多孔薄膜及其制备方法和用途 |
-
2016
- 2016-08-22 CN CN201610699400.5A patent/CN106192369A/zh active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489184A (zh) * | 2011-11-28 | 2012-06-13 | 北京碧水源膜科技有限公司 | 具有永久亲水性的聚偏氟乙烯中空纤维微滤膜及制备方法 |
| CN103613780A (zh) * | 2013-11-14 | 2014-03-05 | 中国科学院化学研究所 | 疏水性聚合物微孔膜的表面改性方法 |
| CN104309232A (zh) * | 2014-10-27 | 2015-01-28 | 江西先材纳米纤维科技有限公司 | 聚酰亚胺纳米纤维增强的耐酸耐碱多孔薄膜及其制备方法和用途 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109585759A (zh) * | 2018-10-31 | 2019-04-05 | 东莞理工学院 | 一种类凝胶结构锂电隔膜、制备方法及全固态锂电池 |
| CN109585759B (zh) * | 2018-10-31 | 2021-11-09 | 东莞理工学院 | 一种类凝胶结构锂电隔膜、制备方法及全固态锂电池 |
| CN109809667A (zh) * | 2019-03-27 | 2019-05-28 | 武汉理工大学 | 污泥脱除水净化装置 |
| CN114024096A (zh) * | 2021-06-17 | 2022-02-08 | 四川启睿克科技有限公司 | 一种电池隔膜的制备方法及电池隔膜 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105304847B (zh) | 一种耐热型多孔隔膜在锂离子电池中的应用 | |
| CN110158200A (zh) | 多孔碳纳米纤维及其制备方法和锂硫电池 | |
| CN106192369A (zh) | 一种无纺布基pvdf膜的制备方法 | |
| CN104466063B (zh) | 聚多巴胺表面改性聚醚砜纳米纤维复合隔膜、制备方法及应用 | |
| CN108807791B (zh) | 一种用于锂电池的复合隔膜及其制备方法 | |
| CN106848150B (zh) | 一种锂电池用改性隔膜的制备方法 | |
| CN102108635B (zh) | 辐照接枝丙烯酸制备电池隔膜材料的方法 | |
| CN105619991B (zh) | 一种复合锂离子电池隔膜材料及其制备方法 | |
| CN103618056A (zh) | 一种锂离子电池隔膜用三维多孔结构纳米纤维膜的制备方法 | |
| CN102324481A (zh) | 锂离子电池用复合隔膜及其制备方法 | |
| JPH0676808A (ja) | 電池用隔膜及び電池 | |
| CN106328864A (zh) | 一种覆二氧化硅层的改性聚烯烃类隔膜及其制备方法 | |
| CN105098128A (zh) | 一种用于二次镍锌电池的复合隔膜及其制备方法 | |
| CN113235300B (zh) | 一种耐高温的锂离子电池复合隔膜的制备方法 | |
| Chen et al. | Hierarchical polyamide 6 (PA6) nanofibrous membrane with desired thickness as separator for high-performance lithium-ion batteries | |
| CN104377329B (zh) | 一种耐热阻燃隔膜及其制备方法 | |
| CN107978741B (zh) | 一种锂硫电池用正极复合材料的制备方法 | |
| CN107369802B (zh) | 一种纤维素涂布锂离子电池隔膜及其制备方法 | |
| CN110556496B (zh) | 一种具有高温自闭合功能的高安全性复合隔膜及其制备方法 | |
| CN105098127A (zh) | 一种用于二次碱性锌锰电池的复合隔膜及其制备方法 | |
| CN106129311A (zh) | 一种锂离子电池隔膜材料的制备方法 | |
| JP2004031084A (ja) | リチウムイオン二次電池用セパレータおよびそれを用いた電池 | |
| CN103849001B (zh) | 一种锂硫电池用复合膜及其制备方法 | |
| CN109524594A (zh) | 一种介孔二氧化硅改性无纺布隔膜及锂硫电池中的应用 | |
| CN107658408B (zh) | 复合型多层聚烯烃锂电隔膜及其制备方法 |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161207 |