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멜트블로운 부직포를 이용한 전열교환소자의 특성 연구 (II) -폴리프로필렌과 나일론 멜트블로운 부직포 특성 고찰-
이창환,이종현,권은희,이경주,손은종,김성훈,Lee, Chang-Hwan,Lee, Jong-Hyun,Kwon, Eun-Hee,Lee, Kyung-Ju,Son, Eun-Jong,Kim, Seong-Hun 한국섬유공학회 2010 한국섬유공학회지 Vol.47 No.6
An enthalpy exchanger made from meltblown was prepared by a range of physical treatments to identify the production potential, and its characteristics were compared with an enthalpy exchanger based on polypropylene (PP). SEM revealed excellent compatibility between nylon and PVA. Various measurements were carried out as a function of the calendering temperature and speed, content of moisture absorbent, and concentration of water soluble polymer. The optimum conditions for the enthalpy exchanger made from nylon meltblown were as follows: a calendering temperature of $124^{\circ}C$, calendering speed of 2 m/min, and pick-up of 8~10%. The tensile strength of nylon was higher than that of the PP materials. In conclusion, nylon melt-blown nonwoven has greater potential than PP melt-blown nonwoven and can be used as a substitute in commercial paper type heat exchangers.
이창환,이준희,이경주,박근후,김성훈,Lee, Chang-Hwan,Lee, Jun-Hee,Lee, Kyung-Ju,Park, Keun-Hoo,Kim, Seong-Hun 한국섬유공학회 2010 한국섬유공학회지 Vol.47 No.2
To obtain high performance microfiber knit wiping cloth used for manufacturing electronic devices benzyl alcohol pretreatment method was optimized. WAXD patterns of the PET, nylon and nylon/polyester filament fibers pretreated with benzyl alcohol showed stronger crystalline peak than 50d/14f fibers. Some properties including wiping efficiency of the wiping cloths made of 75d/36f filament fibers of nylon/PET(N/P) and the ones made of 50d/14f fibers were tested and compared. Results showed that water absorption rate of the former was higher than that of the latter. The former showed excellent removing efficiency of approximately 90% compared to 60% for the latter. Air particle counter analysis revealed that the former has less residue content than the latter.
긴급제안 - 민간에 의한 공공부문 정보자원 상업화 추구
이창환,Lee, Chang-Hwan 한국데이터베이스진흥원 1998 디지털콘텐츠 Vol.9 No.-
정보의 산업화란 산업 경제 활동, 교육 문화 활동, 국가 운영을 비롯한 공익 활동 등 인류제반 활동의 결과를 정보화하고 이를 외부에 제공하여 또 하나의 전문 산업 분야로 창출하는 것을 의미한다. 산업의 정보화와 산업화는 상호 균형있게 발전되어야 진정한 정보화 사회로 다가갈 것이다. 지금까지 국내 정보화 정책은 산업의 정보화에 치중되었다. 공공부문 정보자원의 민간에 의한 상업화는 전형적인 정보의 산업화 정책이 될 것이다.