중공사막 및 그 제조 방법

• Main Authors: TACHIBANA TAKASHI, IWAI KENTA, KOBAYASHI KENTARO, KOZAKI YOICHIRO, KANAMORI SATOKO
• Format: Patent
• Language: Korean
• Published: 27.12.2023
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; NATURAL OR ARTIFICIAL THREADS OR FIBRES; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; SPINNING; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING-UP

본 발명은, 구상 구조의 층의 두께 L이 60μm 이상 500μm 이하이며, 상기 구상 구조의 층이, 제1면과 제2면을 가지고, 상기 제1면으로부터 10μm 이내의 영역 Sa1에서의 구상 구조의 평균 직경 Da1과, 상기 제2면으로부터 10μm∼20μm의 영역 Sb2에서의 구상 구조의 평균 직경 Db2가, Da1>Db2의 관계식을 만족사키고, 구상 구조가 특정 파라미터를 만족시키는 중공사막에 관한 것이다. The present invention relates to a hollow fiber membrane in which the thickness L of a spherical structure layer is 60-500 µm (inclusive), the spherical structure layer has a first surface and a second surface, the average diameter Dai of the spherical structure in a region Sa1 10 µm or less from the first surface and the average diameter Db2 of the spherical structure in a region Sb2 10-20 µm from the second surface satisfy the relational expression Da1 > Dbz, and the spherical structure satisfies certain parameters.