• 作者： Chou, Kan-Sen; Chen, Ching-Yueh; Huang, Chung-Tai
• 中文摘要： 本文主要在探討乾壓成型技術,製造具平均孔洞約1.0.mu.m之多孔基材。重點在研究孔洞特性,如對流體之滲透性,破裂強度等,與其微結構,即孔隙度,孔洞尺寸以及孔洞連通性間之關係。其中經由水擠出法所測得孔洞撓曲度值,可視為孔洞連通性之指標。在本研究中此值多在2.5到3.5之間。撓曲度值會隨成型壓力增加而增加,表示在高壓下,因為粒子堆積緊密,故造成流體流動路線之更加撓曲。吾人之結果也顯示,使用同一方法所製造出來的樣品,其孔隙度,孔洞尺寸與撓曲度間存在某種特定之關係。
• 英文摘要： In this work, we studied the dry pressing technique for making porous supports with average pore sizes about 1.mu.m. Emphasis was placed on the microstructure characterization of pores, which included porosity, pore size and tortuosity. The relationship between these porous characteristics and other properties such as specific permeability and flexural strength were also investigated. The tortuosity values, which were determined by a dynamic water expulsion method, were considered as reasonable indicators for pore connectivity and fell in the range of 2.5 to 3.5 for our samples. The tortuosity would increase with increasing forming pressure, which suggested that under a higher forming pressure the particles would be packed more closely and therefore making the flow path more tortuous. Finally, our results seemed to indicate that the three porous characteristics, i.e., porosity, pore size and tortuosity, for samples made by the same fabrication technique might very well be correlated in certain relationships.
• 中文關鍵字： 多孔; 基材; 乾壓; 撓曲度; 穿透度; 強度
• 英文關鍵字： Porous; Support; Dry Pressing; Tortuosity; Permeability; Strength