除此之外，本計畫還將把8-氫氧基辛烷酸(8-hydroxyotanoic acid)及其衍生物添加於非氟系(Non-fluoroine based)有機高分子溶液，經塗佈、加熱、乾燥製程形成孔洞化結構薄膜，探討極性分子添加劑於雙溶劑系統與高分子孔洞生成機制關係以及高分子孔洞孔隙率與電荷儲存關係。同時還將運用分子添加劑的高陰電性與孔洞高分子的高絕緣阻抗特性，來提出一個全新的駐極體薄膜製程，並嘗試將運用本計畫原型機台所完成的非氟系駐極體薄膜來開發平面駐極體揚聲器領域的應用。
Abstract: This study focuses on developing the automatic or semi-automatic prototype machine for R&D use of electret materials. In addition, the optimal manufacturing processes to improve the performance of electret materials, which include the organic or inorganic additives in non-woven fiber undergoing heat processes, corona discharging and electrode change, or applying techniques such as loading or ultrasound is proposed. Moreover, by measuring performance such as electrostatic force and electric field decay needed for improving the trapped electrostatic charge, parameters for optimizing performance of electret will be identified. The newly developed electret will be applied to improve micro-particle filtration and virus reduction performance of medical used face masks, air filtering and medical tabs, etc..
In addition, the Non-fluoroine based organic polymer solution dissolved with certain concentration of 8-hydroxyotanoic acid and its corresponding derivatives will be coated, heated, and dried out to form porous thin film structure. The relation between the polar molecular based additives in double-solvents solution and the mechanism of micro-cavities forming in polymers, and the surface area induced by mico-cavities versus electrostatic charge storage, etc. are all to be examined in detail in this project. Finally, to fully utilized the above-mentioned characteristics, the innovative manufacturing process associated with electret based thin film developed in this proposal will be extended to advance flat speaker system technologies.
Non-fluoroine based organic polymer solution
porous thin film structure