Electret properties of polyetherimides:: Influence of water content and comparison with other high-temperature polymer films

被引：14

作者：

Frese, Thomas ^{[1
]}

Lovera, Deliani ^{[1
]}

Sandler, Jan K. W. ^{[1
]}

Lim, Goy Teck ^{[1
]}

Altstaedt, Volker ^{[1
]}

Giesa, Reiner ^{[1
]}

Schmidt, Hans-Werner ^{[1
]}

机构：

[1] Univ Bayreuth, Bayreuther Inst Makromol Forsch, D-95440 Bayreuth, Germany

来源：

MACROMOLECULAR MATERIALS AND ENGINEERING | 2007年 / 292卷 / 05期

关键词：

electrets; high performance polymers; high temperature materials; polyetherimide; polyimide; water absorption;

D O I：

10.1002/mame.200600463

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this comparative study, the charge storage performance of commercial high-temperature polymer films was evaluated and correlated with their chemical structure. Isothermal surface potential decay measurements after annealing periods at 90 degrees C revealed that amorphous polyetherimide (PEI) films showed the best charge storage behavior. Polyimide films showed reduced charge storage performance, whereas sulfur-containing polymer films are not suitable as electrets due to their fast charge decay. Additionally, the effect of water content in PEI films in the range of 0.02-0.79 wt.-% was studied. Increasing amounts of water decreased the charge storage properties proportionally, but only by a relatively, smaller amount: the highest investigated water content of 0.79 wt.-% reduced the charge by only 30%.

引用

页码：582 / 587

页数：6

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