기존 탄화수소계 세정제는 낮은 인화점으로 인하여 화재, 폭발과 같은 문제점을 가지고 있다. 인화점을 높이기 위해 불소가 포함된 난연성 세정제 7종을 개발하였다. 새롭게 합성한 세정제를 한국석유관리원에서 국가산업표준 방법으로 분석하여 물성을 측정하고 세정성 평가를 수행하였다. 물성 측정 결과, 인화점이 탄화수소계 세정제보다 높은 것을 확인하였다. 세정력 평가를 위하여 가로 60 mm, 세로 40 mm 크기의 스테인리스강 기판에 인발유, 아비에트산, 절삭유, 윤활유를 각각 도포하여 합성한 세정제(1~7)에 넣어 침적한 후 세정력을 평가하였다. 최대 5분간 침적하였을 때 인발유는 80~96%, 아비에트산은 82~97%, 윤활유는 86~93% 정도의 높은 세정력을 보였다. 그러나 절삭유에서는 60~87% 정도로 다른 오일보다 낮은 세정력을 보였다. 따라서 약간의 차이는 있지만 대체적으로 우수한 세정력을 보여 산업세정분야에 적용이 가능함을 나타내었다.
기존 탄화수소계 세정제는 낮은 인화점으로 인하여 화재, 폭발과 같은 문제점을 가지고 있다. 인화점을 높이기 위해 불소가 포함된 난연성 세정제 7종을 개발하였다. 새롭게 합성한 세정제를 한국석유관리원에서 국가산업표준 방법으로 분석하여 물성을 측정하고 세정성 평가를 수행하였다. 물성 측정 결과, 인화점이 탄화수소계 세정제보다 높은 것을 확인하였다. 세정력 평가를 위하여 가로 60 mm, 세로 40 mm 크기의 스테인리스강 기판에 인발유, 아비에트산, 절삭유, 윤활유를 각각 도포하여 합성한 세정제(1~7)에 넣어 침적한 후 세정력을 평가하였다. 최대 5분간 침적하였을 때 인발유는 80~96%, 아비에트산은 82~97%, 윤활유는 86~93% 정도의 높은 세정력을 보였다. 그러나 절삭유에서는 60~87% 정도로 다른 오일보다 낮은 세정력을 보였다. 따라서 약간의 차이는 있지만 대체적으로 우수한 세정력을 보여 산업세정분야에 적용이 가능함을 나타내었다.
To increase flash point which is related to flammability, seven unprecedented new cleaning agents containing fluoride atoms have been invented. These newly synthesized cleaning agents's physical properties which were conducted by Korea Institute of Petroleum Management by using a standard method sho...
To increase flash point which is related to flammability, seven unprecedented new cleaning agents containing fluoride atoms have been invented. These newly synthesized cleaning agents's physical properties which were conducted by Korea Institute of Petroleum Management by using a standard method showed excellent values. Particularly, flash point of newly synthetic cleaning agents is more higher than that of fluoride free compound. A specimen for cleaning ability was prepared by cutting in $60mm{\times}40mm$ size of stainless steel plate. The surface of the above specimens was applied with four kinds of contaminants, such as paraffin based drawing oil, flux abietic acid, water-insoluble cutting oil, and lubricating oil. Contaminated specimens were immersed in new compounds (1-7) for 1 to 5 minutes to dissolve oil in the cleaning agent. Although the data indicate that all compounds (1-7) exhibit lower cleaning ability toward cutting oil, it is observed that in the case of the present study more than 80% of pollutants on the surface were almost removed within 5 minutes.
To increase flash point which is related to flammability, seven unprecedented new cleaning agents containing fluoride atoms have been invented. These newly synthesized cleaning agents's physical properties which were conducted by Korea Institute of Petroleum Management by using a standard method showed excellent values. Particularly, flash point of newly synthetic cleaning agents is more higher than that of fluoride free compound. A specimen for cleaning ability was prepared by cutting in $60mm{\times}40mm$ size of stainless steel plate. The surface of the above specimens was applied with four kinds of contaminants, such as paraffin based drawing oil, flux abietic acid, water-insoluble cutting oil, and lubricating oil. Contaminated specimens were immersed in new compounds (1-7) for 1 to 5 minutes to dissolve oil in the cleaning agent. Although the data indicate that all compounds (1-7) exhibit lower cleaning ability toward cutting oil, it is observed that in the case of the present study more than 80% of pollutants on the surface were almost removed within 5 minutes.
* AI 자동 식별 결과로 적합하지 않은 문장이 있을 수 있으니, 이용에 유의하시기 바랍니다.
대상 데이터
A specimen was prepared by cutting in 60 mm × 40 mm size of stainless steel plate and weighted.
이론/모형
All synthesized ester compounds (1-7) were estimated for their possibility of cleaning agent by examining physical properties which were conducted by Korea Institute of Petroleum Management by using standard methods. All compounds have various good physical properties which are almost similar to other cleaners[9,10].
cFlash point was measured with COC method.
참고문헌 (10)
Jordan, A., and Frank H., "Trifluoroacetate in the Environment Evidence for Sources Other Than HFC/HCFCs," Environ. Sci. Technol., 33, 522-526 (1999).
Farman, J. D., Gardiner, B. G., and Shanklin, J. D., "Large Losses of Total Ozone in Antarctica Reveal Seasonal ClOx/NOx Interaction," Nature, 315, 207 (1985).
Montzka, S. A., Butler, J. H., Myers, R. C., Thompson, T. M., Swanson, T. H., Clarke, A. D., Lock. L. T., and Elkins. J. W., "Decline in the Tropospheric Abundance of Halogen from Halocarbons: Implications for Stratospheric Ozone Depletion," Science, 272, 1318 (1996).
Berends, A. G., Boutonnet, J. C., de Rooij, C. G., and Thompson, R. S., "Toxicity of Trifluoroacetate to Aquatic Organisms," Environ. Toxicol. Chem., 18(5), 1053-1057 (1999).
Cahill, T. M., Thomas, C. M., Schwarzbach, S. E., and Seiber, J. N., "Accumulation of Trifluoroacetate in Seasonal Wetlands in California," Environ. Sci. Technol., 35(5), 820-825 (2001).
Banks, R. E., and Smart, E., Organofluorine Chemistry: Principles and Commercial Applications, Plenum Press, New York, 1994, pp. 549.
Weltman, H. J., and Phillips, T. L., "Nonflammable mild odor solvent cleaner," U.S. Patent No. 5,437,808 (1995).
Mathisen, T. R., and Thomas, S. D., "Nonflammable lubricious composition," U.S Patent No. 5,456,948 (1997).
Park, J. H., Cha, A. J., Kim, H. G., and Bae, J. H., "A Study on Field Application of 2,2,2-trifluoroethanol (TFEA) as an Alternative Cleaning Agent," J. Korean Ind. Eng. Chem., 15(7), 773-774 (2004).
Park, Y. B., Bae, J. H., Lee, M. J., Lee, H. Y., Lee, J. G., Bae, S. J., and Lee, D. K., "A Study on Development of Alternative Non-aqueous Cleaning Agents to Ozone Depletion Substances and its Field Application," Clean Tech., 17(4), 306-307 (2011).
※ AI-Helper는 부적절한 답변을 할 수 있습니다.