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HOLLOW FIBER MEMBRANE
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Title:
HOLLOW FIBER MEMBRANE
Author:
UENO Yoshiyuki
;
YAMADA Masayuki
;
TAMIYA Ryuta
Subjects:
APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS
;
CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS
;
NATURAL OR ARTIFICIAL THREADS OR FIBRES
;
PERFORMING OPERATIONS
;
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
;
SEPARATION
;
SPINNING
;
TEXTILES
;
TRANSPORTING
Description:
Provided is a hollow fiber membrane that is provided with a compact layer having only holes with a hole surface area of 0.28 µm2 or less when observed at a cross-section orthogonal to the longitudinal direction of the hollow fiber membrane, wherein: the compact layer is disposed on the outer surface side or the inner surface side of the hollow fiber membrane; the outside diameter of the hollow fiber membrane is 350 µm or less; the inside diameter is 150 µm or greater; the thickness is 30 - 90 µm; the surface of the hollow fiber membrane whereon the compact layer is disposed has a plurality of holes, with the average hole diameter for the plurality of holes observed at the surface of the hollow fiber membrane being 0.3 - 0.9 µm; and the ratio (DT/WT) of the thickness (DT) of the compact layer to the thickness (WT) of the hollow fiber membrane is 0.24 or greater. La membrane à fibres creuses de l'invention est équipée d'une couche compacte possédant uniquement des orifices dont la surface d'ouverture est inférieure ou égale à 0,28μm2, dans des conditions d'observation selon un plan transversal perpendiculaire dans la direction longitudinale de la membrane à fibres creuses. La couche compacte est placée côté surface externe ou côté surface interne de la membrane à fibres creuses. La membrane à fibres creuses présente un diamètre externe inférieur ou égal à 350μm, un diamètre interne supérieur ou égal à 150μm, et une épaisseur supérieure ou égale à 30 μm et inférieure ou égale à 90 μm. La surface de la membrane à fibres creuses sur laquelle est placée la couche compacte, possède une pluralité d'orifices dont le diamètre moyen dans une observation de ceux-ci depuis la surface de la membrane à fibres creuses, est supérieur ou égal à 0,3 μm et inférieur ou égal à 0,9 μm. Le rapport (DT/WT) de l'épaisseur (DT) de la couche compacte et de l'épaisseur (WT) de la membrane à fibres creuses, est supérieur ou égal à 0,24. 本発明の中空糸膜は、中空糸膜の長手方向に垂直な断面で観察した状態において、孔面積が0.28μm2以下の孔のみを有する緻密層を備え、緻密層は中空糸膜の外表面側または内表面側に配されており、外径は350μm以下であり、内径は150μm以上であり、膜厚は30μm以上90μm以下であり、緻密層が配された中空糸膜の表面は複数の孔を有しており、複数の孔の中空糸膜表面で観察した平均孔径が0.3μm以上0.9μm以下であり、緻密層の厚み(DT)と中空糸膜の膜厚(WT)との比(DT/WT)が0.24以上である。
Creation Date:
2017
Language:
English;French;Japanese
Source:
esp@cenet
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