Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference (한국윤활학회:학술대회논문집)
- 2003.11a
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- Pages.139-148
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- 2003
A study on Biodegradability of Vegetable Oil based EP Grease
식물유계 EP그리스의 생분해도 평가에 관한 연구
- Nam Kyung-Im (Surfactant & Lubricant Research Team, Applied Chemistry Research Group, Korea Research Institute of Chemical Technology) ;
- Kim Young-wun (Surfactant & Lubricant Research Team, Applied Chemistry Research Group, Korea Research Institute of Chemical Technology) ;
- Chung Keunwo (Surfactant & Lubricant Research Team, Applied Chemistry Research Group, Korea Research Institute of Chemical Technology) ;
- Cho Wonoh (R&D Center, ChangAm L&S Co. Ltd.) ;
- Jeon In-sik (R&D Center, ChangAm L&S Co. Ltd.) ;
- Chung Yong-Mi (R&D Center, ChangAm L&S Co. Ltd.)
- 남경임 (한국화학연구원 응용화학연구부 유제화학연구센타) ;
- 김영운 (한국화학연구원 응용화학연구부 유제화학연구센타) ;
- 정근우 (한국화학연구원 응용화학연구부 유제화학연구센타) ;
- 조원오 (장암엘에스(주) 기술연구소) ;
- 전인식 (장암엘에스(주) 기술연구소) ;
- 정용미 (장암엘에스(주) 기술연구소)
- Published : 2003.11.01
Abstract
In this study, biodegradable base Li-greases were prepared by using Li-soap thickener and vegetable oils such as soybean oil, rapeseed oil, castor oil and synthetic ester. Also, EP-greases were formulated by blending base Li-greases, anti-wear additives, EP additives, anti-oxidants and corrosion inhibitor etc. And EP-greases were characterized by analysing physical properties such as worked penetration, dropping point, 4-ball wear, extreme pressure, thermal properties etc. Biodegradability of base Li-greases and EP-greases were evaluated by CEC-L-33-A-93 method using several inoculums of domestic sewage treatment plant. As the results, biodegradability of vegetable oils were shown at the range of 97.1 to