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RISS 인기검색어
- 검색키워드
- 저자 : 홍종승(Jongsung Hong) (검색결과 2 건)
- 무료
- 기관 내 무료
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정근우(Keunwoo Chung),김영운(Young-Wun Kim),이상봉(Sangbong Lee),홍종승(Jongsung Hong),한상재(Sangjae Han),오명호(Myoungho Oh) 한국트라이볼로지학회 2014 한국트라이볼로지학회지 (Tribol. Lubr.) Vol.30 No.6
Currently, in order to resist the scratching of the fuel rod surface while fabricating the fuel assembly of the light-water nuclear reactor, we use a solution of nitrocellulose, an explosive material, as a dry lubricant along with its solvent. However, the demand for developing safe and harmless aqueous alternative materials for environment-conservation and field-worker safety has increased. In this study, we demonstrate the preparation of a novel aqueous resin composite using a formulation of aqueous polymeric resin, alcoholic solvent, and water. Subsequently, we characterize this composite on the basis of hardness, adhesive property, and water solubility using plates similar to the fuel rod material. The insertion test of a fuel rod coated with the YS-3 composite shows load values of 18.8-20.5 kg/㎠, which is comparable with 18.0-20.5 kg/㎠ of the nitrocellulose coating agent. In addition, the depth and width of longitudinal scratches caused by the YS-3 composite test are 50% higher than those of the standard. We can develop a harmless and safe aqueous dry lubricant to replace the existing NC products through field testing of 264 pieces of fuel rods, after producing 350 kg of the YS-3 prototype. The scratch test for the rod surface showed that weight of chip of YS-3 prototype was smaller than that of NC before and after solvent treatment, indicating the properties of YS-3 prototype was comparable to the counterpart.
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정근우(Keunwoo Chung),김영운(Young-Wun Kim),이상봉(Sangbong Lee),홍종승(Jongsung Hong),한상재(Sangjae Han),오명호(Myoungho Oh) 한국트라이볼로지학회 2014 한국트라이볼로지학회 학술대회 Vol.2014 No.10
In order to resist the scratch of fuel rod surface while fabricating fuel assembly for light-water nuclear reactor, nitrocellulose as a dry lubricant, which is an explosive material, and its solvent to dissolve have been used so far. However, there is an increased demand to develop the safe and harmless aqueous alternate materials for environmental conservation and field-workers safety. This study demonstrated that a novel aqueous resin composite was prepared with formulation of aqueous polymeric resin and alcoholic solvent and water, which was subsequently characterized with hardness, adhesive property, and solubility for water using some plate similar with the fuel rod materials. The insertion test of fuel rod coated with YS-3 composite showed the load values of 18.8-20.5 kg/cm², which is comparable with 18.0-20.5 kg/cm² of nitrocellulose coating agent. In addition, the depth and width of longitudinal scratches caused by the test using YS-3 composite was 50% better than those of standard. We could develop harmless and safe aqueous dry lubricant to replace the existing NC products through field demonstration testing 264 pieces of fuel rods after producing 350 kg of YS-3 prototype.
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