Composite microporous film, and production method and use thereof
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- TORAY IND INC
- Publication Date
- 2006-12-20
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Abstract
Description
technical field
[0001] The present invention relates to a composite microporous membrane, a method for producing the same, and an application thereof, and in particular, relates to permeability, adhesion to electrodes, mechanical strength, heat shrinkage resistance, sealing (Shauttodown) characteristics, and melting (Meltdown) characteristics. Composite microporous membrane with excellent balance, its production method and use. Background technique
[0002] Polyolefin microporous membranes are widely used in battery separators including lithium batteries, separators for various capacitors, various filters, moisture-permeable waterproof clothing, reverse osmosis membranes, ultrafiltration membranes, precision filtration membranes, etc. use.
[0003] In separators for lithium secondary batteries and lithium ion batteries, in order to prevent battery heat generation, fire, rupture accidents, etc. In addition to the function of stopping the reaction of the battery, it is also ...