Shutdown separators with improved properties

Invention Grant

US07662518B1 Shutdown separators with improved properties 失效

Title translation: 关闭分离器具有改进的性能

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Patent Title: Shutdown separators with improved properties
Patent Title (中): 关闭分离器具有改进的性能
Application No.: US11952892

Application Date: 2007-12-07
Publication No.: US07662518B1

Publication Date: 2010-02-16
Inventor: Abbas Samii , Garrin Samii , David Veno
Applicant: Abbas Samii , Garrin Samii , David Veno
Agent Mark P. White
Main IPC: H01M2/14
IPC: H01M2/14 ; H01M2/16

Shutdown separators with improved properties

Abstract:

A microporous polyolefin battery separator membrane is extremely high in porosity, high in puncture strength, very low in shrinkage and with shutdown temperature of 130-140 degrees C. and melt integrity greater than 165 degrees C. It consists of 20-30% by weight of a UHMW polyethylene having Mw of 1×106 or higher, 60-70% by weight of a HDPE having average Mw of between 200,000-500,000 and 5-15% by weight of TiO2 with an average particle size of less than 0.2 microns.

Abstract(Chinese):

微孔聚烯烃电池隔膜的孔隙率极高，穿刺强度高，收缩率非常低，停机温度为130-140摄氏度，熔体完整性大于165摄氏度。它由20-30重量％的Mw为1×10 6或更高的UHMW聚乙烯，60-70％重量的平均Mw为200,000-500,000和5-15重量％的平均粒度小于0.2微米的TiO 2的HDPE。

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