Electret material and induction conversion element
AssigneeDaikin Industries, Ltd.
InventorsYoshito Tanaka, Makoto Matsuura, Yuuki Suzuki, Akitoshi Ogata, Satoru Yoneda
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Abstract
An object of the present disclosure is to provide, for example, a fluoropolymer electret material with hardness. The present disclosure relates to an electret material comprising a fluoropolymer, wherein the fluoropolymer comprises, as a main component, a monomer unit represented by formula (1): wherein R1 to R4 are each independently a fluorine atom, a fluoroalkyl group, or a fluoroalkoxy group; and the fluoropolymer has a mass average molecular weight of 1 million or more and 5 million or less, or 5000 or more and less than 20000.
Claims16
An electret material comprising a fluoropolymer,
- wherein
- the fluoropolymer comprises, as a main component, a monomer unit represented by formula (1):
- wherein R1 to R4 are each independently a fluorine atom, a fluoroalkyl group, or a fluoroalkoxy group;
- the fluoropolymer has a mass average molecular weight of 1 million or more and 5 million or less, or 5000 or more and less than 20000,
- the electret material has an average thickness of 0.1 μm or more, and
- the fluoropolymer has carbonate end.
Dependencies are inferred from the claim text.