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1. WO2017181848 - ISOLATION FILM WITH LOW SHRINKAGE AT WIDE TEMPERATURE RANGE AND PREPARATION METHOD THEREFOR

Publication Number WO/2017/181848
Publication Date 26.10.2017
International Application No. PCT/CN2017/079539
International Filing Date 06.04.2017
Chapter 2 Demand Filed 25.08.2017
IPC
C08L 23/06 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
04Homopolymers or copolymers of ethene
06Polyethene
C08L 27/16 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
27Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
12containing fluorine atoms
16Homopolymers or copolymers of vinylidene fluoride
C08L 61/16 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
61Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
04Condensation polymers of aldehydes or ketones with phenols only
16of ketones with phenols
C08J 9/28 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
9Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
28by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
B29D 7/01 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
7Producing flat articles, e.g. films or sheets
01Films or sheets
H01M 2/16 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2Constructional details, or processes of manufacture, of the non-active parts
14Separators; Membranes; Diaphragms; Spacing elements
16characterised by the material
CPC
B29C 55/02
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
55Shaping by stretching, e.g. drawing through a die; Apparatus therefor
02of plates or sheets
B29D 7/01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
7Producing flat articles, e.g. films or sheets
01Films or sheets
C08J 2323/06
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
2323Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
02not modified by chemical after treatment
04Homopolymers or copolymers of ethene
06Polyethene
C08J 2423/06
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
2423Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
02not modified by chemical after treatment
04Homopolymers or copolymers of ethene
06Polyethene
C08J 3/24
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
3Processes of treating or compounding macromolecular substances
24Crosslinking, e.g. vulcanising, of macromolecules
C08J 5/18
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
5Manufacture of articles or shaped materials containing macromolecular substances
18Manufacture of films or sheets
Applicants
  • 上海恩捷新材料科技有限公司 SHANGHAI ENERGY NEW MATERIALS TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 程跃 CHENG, Alex
  • 熊磊 XIONG, Lei
  • 邓洪贵 DENG, Honggui
  • 何方波 HE, Fangbo
  • 王伟强 WANG, Weiqiang
Agents
  • 中国国际贸易促进委员会专利商标事务所 CCPIT PATENT AND TRADEMARK LAW OFFICE
Priority Data
201610256004.522.04.2016CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) ISOLATION FILM WITH LOW SHRINKAGE AT WIDE TEMPERATURE RANGE AND PREPARATION METHOD THEREFOR
(FR) FILM D'ISOLATION À FAIBLE RETRAIT DANS UNE LARGE PLAGE DE TEMPÉRATURE ET PROCÉDÉ POUR SA PRÉPARATION
(ZH) 一种宽温域低收缩隔离膜及其制备方法
Abstract
(EN)
Disclosed are an isolation film with low shrinkage at a wide temperature range and a preparation method therefor, which fall within the technical field of electrochemistry. The isolation film of the present invention comprises an irradiation cross-linked fluorine-containing polymer A with a melting point of 150°C or more, and/or a polymer B containing a benzene ring in the backbone of a molecule; ultra-high molecular weight polyethylene with a molecular weight of 1.0×106 to 10.0×106; and high density polyethylene with a density within the range of 0.940-0.976 g/cm3. The temperature difference between the pore-closing temperature and the film-breaking temperature of the isolation film is 80°C-90°C, and is preferably 85°C-90°C, and the thermal shrinkage thereof is not higher than 2.0%. The isolation film of the present invention has a higher difference between the film-breaking temperature and the pore-closing temperature, and a lower thermal shrinkage. When the isolation film of the present invention is used in an electrochemical device, the reliability and safety of the electrochemical device are effectively improved.
(FR)
L'invention concerne un film d'isolation à faible retrait dans une large plage de température et un procédé pour sa préparation, qui se situent dans le domaine technique de l'électrochimie. Le film d'isolation de la présente invention comprend un polymère A contenant du fluor, réticulé par irradiation, présentant un point de fusion de 150°C ou plus et/ou un polymère B contenant un cycle benzène dans le squelette d'une molécule; un polyéthylène de poids moléculaire ultra-élevé présentant un poids moléculaire de 1,0×106 à 10,0×106; et un polyéthylène haute densité présentant une densité dans la plage de 0,940-0,976 g/cm3. La différence de température entre la température de fermeture des pores et la température de rupture du film d'isolation est de 80°C-90°C et est de préférence de 85°C-90°C et son retrait thermique n'est pas supérieur à 2,0 %. Le film d'isolation de la présente invention présente une différence plus élevée entre la température de rupture de film et la température de fermeture de pore et un retrait thermique inférieur. Lorsque le film d'isolation de la présente invention est utilisé dans un dispositif électrochimique, la fiabilité et la sécurité du dispositif électrochimique sont efficacement améliorées.
(ZH)
本发明公开了一种宽温域低收缩隔离膜及其制备方法,属于电化学技术领域。其中,本发明的隔离膜包括:经辐照交联的熔点在150℃以上的含氟聚合物A和/或分子主链含有苯环的聚合物B;分子量为1.0×106至10.0×106的超高分子量聚乙烯;和密度为0.940-0.976g/cm3范围内的高密度聚乙烯;所述隔离膜的闭孔温度和破膜温度的温差为80-90℃,优选为85-90℃;热收缩率不高于2.0%。本发明的隔离膜具有较高的破膜温度和闭孔温度差值,和较低的热收缩率;当在电化学装置中使用本发明的隔离膜时,能够有效提高电化学装置的可靠性和安全性。
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