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NAOSITE : Nagasaki University's Academic Output SITE > 060 工学部・工学研究科 > 060 紀要 > 長崎大学工学部研究報告 > 第19巻 第32号 >

防食用塗装皮膜の剥離強度および塗装面の流体摩擦抵抗の研究


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タイトル: 防食用塗装皮膜の剥離強度および塗装面の流体摩擦抵抗の研究
その他のタイトル: Study on the Adhesive Strength and the Hydraulic Frictional Resistance of Anticorrosive Paint
著者: 今井, 康文 / 石田, 正弘 / 楠本, 韶
著者(別表記) : Imai, Yasufumi / Ishida, Masahiro / Kusumoto, Sho
発行日: 1989年 1月
出版者: 長崎大学工学部 / Faculty of Engineering, Nagasaki University
引用: 長崎大学工学部研究報告, 19(32), pp.9-16; 1989
抄録: Splitting of paint film seems phenomenologically quite analogous to the crack propagation through the continuous body. The tip of splitting represents the boundary separating the continuous body from the broken. The fracture mechanics, therefore, could be applied for the assessment of adhesion of paints in the same line as of adhesive joints in structures. In this paper, a theory has been developed to estimate the adhesive energy of paints. Isophthalic resin coating was splitted from the substrate by wedging and peeled lengthes were measured as a function of the wedge thickness. Employing the theory, adhesive energy was estimated to be 50-100 J/m2, which is quite resemble to the adhesive energy of epoxy resin to alminum alloy substrates. Additionally, the effect of painting on the reduction of hydraulic frictional resistance has been studied quantitatively using three cylinders with different surface roughness. When the relative surface roughness was decreased from 2.5 x 10-5 to 0.6 X 10-5 by painting and polishing, the frictional resistance was reduced by about 2% under the high Reynolds number condition. More effect of painting is expected for ships because the ship Reynolds number is higher than the present experiment.
URI: http://hdl.handle.net/10069/24281
ISSN: 02860902
資料タイプ: Departmental Bulletin Paper
原稿種類: publisher
出現コレクション:第19巻 第32号

引用URI : http://hdl.handle.net/10069/24281

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