친환경 준용매계 세정제의 제조와 그 세정 특성

강두환; 하순효; 한종필; 이병철; 여학규; 배장순; 염규설; Doo Whan Kang; Soonhyo Ha; Jongpil Han; Byoung Chul Lee; Hak Gue Yeo; Jang Soon Bae; Kou-sul Yeum

Journal of the Korean Industrial and Engineering Chemistry, Vol.18, No.2, 188-193, April, 2007

Export Citation

친환경 준용매계 세정제의 제조와 그 세정 특성

Preparation and Cleaning Properties of Environmental Friendly Semi-Solvent Cleaning Agents

강두환 ^†, 하순효, 한종필, 이병철 , 여학규, 배장순 ¹, 염규설²

단국대학교 재료화학시험연구소
¹단국대학교 공업화학과
²해양경찰청

Doo Whan Kang^†, Soonhyo Ha, Jongpil Han, Byoung Chul Lee , Hak Gue Yeo, Jang Soon Bae¹, and Kou-sul Yeum²

Institute of Material & Chemical Testing, Dankook University, Seoul 140-714, Korea
¹Department of Industrial Chemistry, Dankook University, Cheonan 330-714, Korea
²Korea Coast Guard, Incheon 406-741, Korea

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초록

나프텐계 탄화수소, terpene계 천연 용제, 계면활성제 및 물을 이용하여 친환경적 준용매계 세정제를 제조하고 이들의 물리적 특성과 flux 및 grease 오염물에 대한 세정효율을 측정하였다. 준용매계 세정제의 물성은 pH가 6.0∼6.7의 약산성으로 중성에 가까운 값을 나타내었으며 표면장력은 27.4∼28.4 dyne/cm의 값을 나타내었다. 또한 wetting index는 물이 소량 들어간 경우 8.65∼12.46, 물이 들어가지 않은 경우 11.99∼17.43의 값을 가졌으며 나프텐계 탄화수소 30 wt%, terpene계 천연 용제 45 wt%, 계면활성제 13 wt%, 보조계면활성제 12 wt%, 물 0 wt%의 조성으로 제조한 세정제가 17.43으로 가장 큰 값을 가졌으며 세정 효율 역시 flux에 대하여 98.64%, grease에 대하여 93.44%로 우수하였다. 전기 전도도는 소량의 물을 첨가한 경우 0.5∼0.9 μs/cm의 값을 나타내어 물이 용제 중에 균일하게 분산되어 있는 W/O형의 준용매계 세정제임을 확인하였다.

Semi-solvent type cleaning agents were prepared by mixing naphthenes, natural terpene oil, surfactant and water, and measured their physical properties. And also, cleaning efficiency for flux and grease was measured by gravimetric method. By measuring the physical properties, pH for cleaning agents were 6.0∼6.7, surface tension, 27.4∼28.4 dyne/cm, and wetting index, 8.65∼12.46 (with water), 11.99∼17.43 (without water). The cleaning agent composed of naphthene, 30 wt%, natural terpene oil, 45 wt%, surfactant, 13 wt%, co-surfactant, 12 wt%, and water, 0 wt% had the largest wetting index, and shown the most effective cleaning properties for flux (98.66%) and grease (93.44%). The conductivity with 0.5∼0.9 μs/cm to the cleaning agent containing small amount of water was found to form W/O type microemulsion.

Keywords:microemulsion;semi-solvent;cleaning efficiency;wetting index

[References]

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[4] Bae JH, Shin MC, Clean Technol., 5(2), 1 (1999)

[5] Wong Fellow CP, Gillum WO, Walters RA, Sakach PJ, Powell D, Bivins B, Transactions on Components Packing and Manufacturing Technology, 19, 119 (1996)

[6] Shibano Y, The 1993 International CFC and Halogen Alternatives Conference Stratosperic Ozone Protection for 90’s, 401 (1993)

[7] Rex LB, A Guide to Activated Carbon for Semi-Aqueous Processing, Precision Cleaning, 29 (1994)

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[9] Owen MJ, Interfacial Activity of Polydimethylsiloxane, K. L. Mittal and P. Bothorel (eds), Surfactant in Solution, Plenum, New York, 1577 (1986)

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