Polymer electrets high-performance

Besides, high-performance polymer electrets, sueh as Parylene HT and certain types of CYTOP, were introduced to the family of electret materials. They exhibit not only excellent electret properties (high surfaee charge density with exceptional long-term and thermal stability) but also good compatibility with MEMS fabrication process. [Pg.585]

Keywords Charge storage properties Commodity polymers Corona charging Electret materials High performance polymers Physical aging Polymer films... [Pg.156]

In conclusion, the electret behavior of commercial high performance polymer films depends strongly on the chemical structure and cannot be easily predicted. Among the investigated polymers, PEI films exhibited the best charge storage capability. However, at a remaining surface potential of 70%, further improvement is still desired. [Pg.163]

As mentioned in the introduction, the commercial polyetherimide Ultem 1000 reveals the most promising electret behavior among the other high performance polymers investigated. However, a chemically identical polyetherimide synthesized... [Pg.190]

Electrets Ferroelectrets Chemical modification Physical aging High performance polymers Polymer foams Polymer films... [Pg.562]

They produced high performance electrets from thin polymer films metallized so as to yield high capacitance. Both electrical and mechanical properties of these transducers have been remarkable examples of how applications of science of solids, including knowledge of electron traps, conduction processes in insulators and the viscoelastic phenomena of semicrystalline polymers, can be combined.(6) Incidentally, similar ideas have been applied to optimization of the properties of particle microphones, through assemblies of perfectly microspherical polymer carbon systems. These have shown what limits of performance... [Pg.167]

This review summarizes our work at the University of Bayreuth over the last few years on improving the electret performance of the commodity polymer isotactic polypropylene (Sect. 3) and the commodity polymer blend system polystyrene/polyphenylene ether (Sect. 4) to provide electret materials based on inexpensive and easily processable polymers. To open up polymer materials for electret applications at elevated temperatures we concentrated our research on commercially available high performance thermoplastic polyetherimide resins and synthesized several fluorinaled polyetherimides to identify structure-property relations and to improve further the performance at elevated temperatures (Sect. 5). [Pg.164]

Also, new polymer elechet materials have been added to the family of electrets, i.e., parylene HT (referred to as polymer AF-4 ) and the amorphous perfluorinated polymer CYTOP. The development of such high-performance electrets is mainly motivated by the apphcation in micro electret power generators (Suzuki 2011 Yang... [Pg.562]

Kashiwagi K, Okano K, Miyajima T, Sera Y, Tanabe N, Morizawa Y, Suzuki Y (2011) Nanocluster-enhanced high-performance perfluoro-polymer electrets for energy harvesting. J Micromech Microeng 21 125016... [Pg.586]

Sakane Y, Suzuki Y, Kasagi N (2008) The development of a high-performance perfluorinated polymer electret and its application to micro power generation. J Micromech Microeng 18 104011... [Pg.587]

Sakane Y et al (2008) Development of high-performance perfluoriented polymer electret film and its application to micro power generation. J Micromech Microeng 18(10) 104011 Sato R, Takamatsu T (1986) An electret switch. IEEE Trans Electr Insul 32(3) 449 55 Schaffert RM (1975) Electrophotography. Wiley, New York Sessler GM, West JE (1962) US Patent 3,118,022... [Pg.644]

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