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Preparation Technique of Foam-Floater to Level Gauge of LPG Tank with High Pressure  

Kim, Byoung-Sik (Department of Chemical & Biochemical Engineering, Dongguk University)
Hong, Joo-Hee (Department of Chemical & Biochemical Engineering, Dongguk University)
Chung, Yongjae (KF Incorporation)
Heo, Kwang-Beom (Department of Chemical & Biochemical Engineering, Dongguk University)
Publication Information
Applied Chemistry for Engineering / v.17, no.4, 2006 , pp. 361-368 More about this Journal
Abstract
The purpose of this study is to invent the preparation technique of the foam-floater used as a level gauge of liquefied petroleum gas (LPG) tank under high pressure, which has not only closed pores but also has under 5 wt% changingrate in case of depositing 72 h in room-temperature LPG. In pressure-resistance and deposition experiment, the prepared foam-floaters with different sulfur (325 Mesh and 400 Mesh) and foaming agent (dinitrosopentamethylenetetramin; DPT and azodicarbonamide; AC) had a marginal difference in its weight changing-rate. However, the prepared floater with sulfur 400 Mesh and the foaming agent AC had smaller pores and higher closed pore-rate. Under $50kg_f/cm^3$ hydraulic pressure, the floater with medium thermal (MT) carbon showed a lower weight changing-rate than semi reinforcing furnace (SRF) carbon. Providing a post-treatment to the prepared floater, the hardness and the pressure-resistance of the inner pore-wall of floater were increased. Prepared floaters having a specific gravity below 0.30 were distorted and broken, and other floaters with a specific gravity above 0.35 were not useful as a floater because of the low buoyancy. Therefore, it was considered that the floaters with a specific gravity between 0.3~0.35 are the most useful as a floater under $50kg_f/cm^3$ pressure-resistance.
Keywords
floater; level gauge; foam-floater; NBR; LPG tank; high pressure;
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  • Reference
1 C. W. Nah, J. M. Rhee, C. H. Yoon, Y. I. Huh, and S. C. Han, Elastomer, 35, 173 (2000)
2 H. W. Lee, D. S. Lee, B. C. Kim, and S. P. Hong, Elastomer, 34, 121 (1999)
3 S. Lee and N. C. Park, Elastomer, 33, 315 (1998)
4 P. R. Willett, Rubber Chem, Tech., 47, 118 (1974)   DOI   ScienceOn
5 S. S. Choi, C. W. Joo, and D. C. Kim, Elastomer, 37, 14 (2002)
6 E. R. Betozzi, Rubber Chem. Tech., 41, 144 (1968)
7 J. Skelton., Rubber Chem. Tech., 47, 376 (1974)   DOI   ScienceOn
8 D. R. Paul and S. Newman, Polymer Blends, Academic Press., New York (1978)
9 N. C. Paik, W. Y. Ryu, and S. Y. Choi, Elastomer, 15, 147 (1980)
10 S. S. Choi, Elastomer, 35, 215 (2000)
11 G. Kraus, Reinforcement of Elastomers, John Wiley & Sons, New York (1965)
12 N. C. Paik, The basic of rubber technology; seminar, The Korean Institute of Rubber Industry, Korea (1981)
13 The Society of Rubber Industry, A Handbook of Rubber Industry, The Society of Rubber Industry, Japan, Tokyo (1982)
14 H. S. Kim and S. Y. Choi, Elastomer, 29, 213 (1994)