PCB의 먼지 제거용 세정제로 사용되는 스프레이형 세정제를 선정하여 이에 대한 청정도를 평가하였다. 친환경적인 대체 세정제를 채택하기 위해서는 세정제의 세정성, 환경성, 경제성을 평가하여 체계적인 선정절차에 의거하여 도입 및 적용하여야 한다. 객관적이고 효율적인 세정성 평가방법의 정립이 현시점에서 매우 중요하다. 본 연구에서는 여러 세정성 평가 방법들 중 표면관찰평가법인 SEM-EDX(Scanning Electron Microscopy/Energy-Dispersive X-ray) 분석과_x000D_ 적외선열화상카메라(THERMOVISION A20 model)를 이용하여 청정도를 평가하였다. CT-2770 모델의 사운드카드를 2×2 cm로 잘라내어 스프레이 세정 전과 후의 청정도를 SEM의 이미지 분석을 통해 관찰할 수 있었고 EDX의 성분분석을 통해 먼지의 제거율을 정량화할 수 있었다. 컴퓨터의 P4T-E 모델의 마더보드와 IPC-A-36 모델의 기판을 사용, 오염물로 먼지와 철가루를 사용하여 열화상카메라로 세정 전, 후의 상온과 50 oC Oven에 방치된 시간의 차이에 따른 온도의 변화를 비교하였다.

A spray-type cleaning agent in utilizing dust-remover on PCB was chosen to study the cleanliness test and efficiency. In order to choose alternative environmental-friendly cleaning agents, it is important that the systematic selection procedures should be introduced and applied through the evaluation of their cleaning ability, environmental characteristics, and economical factors, and that the objective and effective evaluation methods of cleanliness should be established for the industry. A novel cleaning evaluation method with scanning electron microscopy/energy-dispersive X-ray analysis of surface observation evaluation method and an infra-red thermography camera(THERMOVISION A20 model) was studied in this work. The sound card(CT-2770 model) cut by 2×2 cm size was used as a part, and before and after the spray cleaning, the cleanliness was observed by the image analyzer of SEM and further the removal efficiency of dust was quantitatively evaluated by the component analysis of EDX. For the parts of P4TE model motherboard and IPC-A-36 PCB plate, before and after the spray cleaning, temperature differences were measured and compared at room temperature and 50 oven temperature by an infra-red thermography camera in the contaminants of dust and iron powder.

Cleanliness Surface Analysis Infra-Red Thermography Camera

Shin JH, Master Thesis, University of Suwon, Suwon (2008)
Shin JH, Lee JH, Bae JH, Lee MJ, Hwang IG, Clean Technol., 15(2), 81 (2009)
Cha AJ, Park JN, Kim H, Bae JH, J. Korean Ind. Eng. Chem., 16(4), 533 (2005)
Shin JH, Min HJ, Bae JH, The Proceedings of Fall Conference of the Korean Society of Clean Technology (2007)
Min HJ, Shin JH, Bae JH, Clean Technol., 14(2), 95 (2008)
Song AR, Bae JH, Proceedings of the Fall Conference of the Korean Society of Clean Technology, Suwon (2006)
Cohen LE, Plat. Surf. Finish., 58-61 (1987)
Lee KA, Ministry of Science and Technology (1992)
Kim ES, Kim BC, Kim SH, J. Polym. Sci. B: Polym. Phys., 42(6), 939 (2004)
Gupta MC, Deshmukh VG, Polymer, 24, 827 (1983)
Di YW, Iannace S, Di Maio E, Nicolais L, J. Polym. Sci. B: Polym. Phys., 43(6), 689 (2005)
Chae HG, Kim BC, Im SS, Han YK, Polym. Eng. Sci., 41(7), 1133 (2001)
Park JW, Im SS, Kim SH, Kim YH, Polym. Eng. Sci., 40(12), 2539 (2000)
Zilg C, Mulhaupt R, Finter J, Macromol. Chem. Phys., 200, 661 (1999)
Messersmith PB, Giannelis EP, J. Polym. Sci. A: Polym. Chem., 33(7), 1047 (1995)
Jang SS, "A Study on the Thermal Response Characteristics of an Uncooled Infrared Sensor", University of Inha (2005)