다공질막, 다공질막 적층체 및 다공질막의 제조 방법

• Main Authors: TSUJIWAKI HIROYUKI, FUKUNAGA ATSUSHI, KATAYAMA HIROKAZU, HASHIMOTO TAKAMASA, CHINO KANAKO
• Format: Patent
• Language: Korean
• Published: 20.09.2024
• Subjects: LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

본 개시에 따른 다공질막은, 폴리테트라플루오로에틸렌을 주성분으로 하는 다공질막으로서, 승온 속도 10℃/분의 시차 주사 열량 분석으로 얻어지는 1st Run의 융해 곡선이, 300℃ 이상 360℃ 이하의 범위에서 흡열 피크를 갖고, 상기 흡열 피크의 온셋 온도와 엔드셋 온도와의 차가 20℃ 이하이다. A porous membrane according to the present disclosure is mainly composed of polytetrafluoroethylene, wherein a 1st Run melting curve obtained by differential scanning calorimetry at a heating rate of 10°C/minute has an endothermic peak in a range of 300°C to 360°C inclusive, and the difference between the onset temperature and the endset temperature of the endothermic peak is not more than 20°C.