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Electret based on polymer having low extractable hydrocarbon
Electret based on polymer having low extractable hydrocarbon
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机译:基于可萃取烃含量低的聚合物的驻极体
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摘要
An electret comprising a porous substrate comprising polymer and charge additive, said substrate comprising no greater than 0.75 % by weight extractable hydrocarbon based on the weight of polymer in said substrate.
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