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1. WO2013159256 - UNIDIRECTIONAL STRETCHING METHOD FOR INDUCING AND PRODUCING SAFETY DIAPHRAGM WITH MICROPOROUS COMPOSITE STRUCTURE

Publication Number WO/2013/159256
Publication Date 31.10.2013
International Application No. PCT/CN2012/000846
International Filing Date 18.06.2012
IPC
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 55/04
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
04uniaxial, e.g. oblique
C08J 2323/12
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
10Homopolymers or copolymers of propene
12Polypropene
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
C08K 2201/011
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUse of inorganic or non-macromolecular organic substances as compounding ingredients
2201Specific properties of additives
011Nanostructured additives
C08K 9/04
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUse of inorganic or non-macromolecular organic substances as compounding ingredients
9Use of pretreated ingredients
04Ingredients treated with organic substances
H01M 10/052
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
Applicants
  • 南通天丰电子新材料有限公司 NANTONG TIANFENG NEW ELECTRONIC MATERIALS CO., LTD. [CN]/[CN] (AllExceptUS)
  • 范建国 FAN, Jianguo [CN]/[CN] (UsOnly)
Inventors
  • 范建国 FAN, Jianguo
Priority Data
201210130952.627.04.2012CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) UNIDIRECTIONAL STRETCHING METHOD FOR INDUCING AND PRODUCING SAFETY DIAPHRAGM WITH MICROPOROUS COMPOSITE STRUCTURE
(FR) PROCÉDÉ D'OBTENTION INDUITE PAR ÉTIREMENT UNIDIRECTIONNEL D'UN FILM DE SÉCURITÉ À STRUCTURE COMPOSITE MICROPOREUSE
(ZH) 单向拉伸诱发生产微孔复合结构安全隔膜的方法
Abstract
(EN)
Disclosed is a unidirectional stretching method for inducing and producing a safety diaphragm with a microporous composite structure. The method is implemented through the following steps: (1) performing surface pretreatment on nano alumina in tetraisopropyldisiloxane titanate; (2) adding the pretreated nano alumina in the amount being 0.5 to 2.5 percent of the mass of a polymer, uniformly mixing, adding an inducer, fusing raw materials, and manufacturing a base film by extension-flowing; (3) stretching the base film under the conditions of the temperature ranging from 10°C to 155°C, the stretching speed ranging from 0.1 m/min to 30 m/min and the stretching ratio ranging from 1 to 4 to form a microporous structure; and (4) stretching the microporous film according to the stretching ratio ranging from 0.5 to 1.5, shaping the film at the temperature ranging from 70°C to 165°C, and forming a polyolefin microporous film product. By means of the present invention, the wettability of the diaphragm is improved, so that the safety of the diaphragm is improved.
(FR)
L'invention concerne un procédé d'obtention induite par étirement unidirectionnel d'un film de sécurité à structure composite microporeuse consistant à : i) soumettre des nanoparticules d'alumine à un prétraitement de surface dans un titanate de tétra-isopropyle; ii) mélanger les nanoparticules d'alumine prétraitées à un polymère, la quantité d'addition étant comprise entre 0,5 et 2,5 % du polymère, ajouter un éliciteur, faire fondre la charge d'alimentation, puis former un film de base par couléee; iii) former par étirement une structure microporeuse dans des conditions où le film de base est soumis à 10-155° C, à une vitesse d'étirement de 0,1 à 30m / min et à un rapport d'étirement de 1 à 4; iv) réallonger le film microporeux selon un rapport d'étirement de 0,5-1,5 et le façonner à une température de 70 à 165° C afin d'obtenir un produit de film polyoléfinique microporeux. L'invention permet d'augmenter l'humidité du film et de résoudre, par conséquent, les problèmes de sécurité.
(ZH)
本发明公开了一种单向拉伸诱发生产微孔复合结构安全隔膜的方法,是通过以下的步骤实现的:(1)将纳米氧化铝在四异丙基二钛酸酯中进行表面预处理;(2)将预处理后的纳米氧化铝均匀混入聚合物中,加入量为聚合物质量的0.5%~2.5%,加入诱发剂,对原料进行熔融,采用延流法制成基膜;(3)将基膜在10~155°C、拉伸速度为0.1~30m/min,拉伸比为1~4倍的条件下进行拉伸形成微孔结构;(4)微孔薄膜进行再拉伸,拉伸比为0.5~1.5,70~165°C定型,形成聚烯烃微孔膜产品。本发明提高了隔膜的浸润性,从而提高了隔膜的安全性问题。
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