분체층 내 액체 침투속도 해석에 의한 분체 표면성질의 평가

하종학; 김성수; 왕림; 최희규; Jonghak Ha; Seongsoo Kim; Lin Wang; Heekyu Choi

Korean Journal of Materials Research, Vol.18, No.3, 128-136, March, 2008

DOI10.3740/MRSK.2008.18.3.128 Export Citation

분체층 내 액체 침투속도 해석에 의한 분체 표면성질의 평가

Evaluation of Solid Surface Properties by Analysis of Liquid Penetration Rate into Powder Beds

하종학, 김성수, 왕림¹, 최희규^{1, †}

부산대학교 대학원 분체공학협동과정
¹창원대학교 나노신소재공학부

Jonghak Ha, Seongsoo Kim, Lin Wang¹, and Heekyu Choi^{1, †}

Interdisciplinary Program in Powder Technology Graduate School, Pusan National University, Busan 609-735, Korea
¹School of Nano and Advanced Materials Engineering, Changwon National University, Gyoungsangnam-Do 641-773, Korea

E-mail:

Evaluation of the solid surface properties by an analysis of the liquid penetration rate into powder beds is very important in applications of powder products. The penetration rate is related the surface property in powder beds. In order to analyze the surface property of powders, the contact angle values of several powders were obtained using the Washbun equation and the Wicking method. The surface free energy value γS was divided into a polar component γSp and a dispersion component γSd. Inorganic powders such as calcite were used as test samples. The effects of the particle size and the type of experimental liquid on the penetration rate were measured. It was confirmed that the surface free energy of the grinding sample is smaller than that of the classification sample.

Keywords:wettablity;contact angle;surface free energy;washburn equation;wicking

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[1] Heertijes PM, Kossen NWF, Powder Technol., 1, 33 (1967)

[2] Masuda H, Higasitani K, Yosia H, Powder Technology Handbook, 3rd Edition, p.594-595, Taylor & Francis, London (2006). (2006)

[3] Tanaka T, Koishi M, SIKIZAI, Japan, 49, 473 (1976)

[4] Kurematsu K, Wada M, Koishi M, ZAIRYO GIJUISTU, Japan, 5(1), 34 (1987)

[5] Choi HK, Kim SS, Hwang JY, J. Miner. Soc. Korea, 20(2), 135 (2007)

[6] Wu S, Polymer Interface Acid Adhesion, p. 152, Dekker, New York, (1982). (1982)

[7] Hata T, Kitazaki Y, Saito T, J. Adhesion, 21, 177 (1987)

[8] Desai TR, Li D, Finlay WH, Wong JP, Colloids and Surfaces B: Biointerfaces, 22, 107 (2001)

[9] Chung HY, Yonemochi E, Saitoh T, Terada K, Tozuka Y, Oguchi T, Yamamoto K, Chung H, Choi WS, Int. J. of Pharm., 255, 49 (2003)

[10] Rho SB, Ahn W, Lim MA, Polymer, 21(1), 103 (1997)

[11] Rho SB, Lim MA, HWAHAK KONGHAK, 36(2), 215 (1988)

[12] Wu W, Giese RF, Vanoss CJ, Powder Technol., 89(2), 129 (1996)

[13] Masuda H, Higasitani K, Yosia H, Powder Technology Handbook, 3rd Edition, p. 87, Taylor & Francis, London (2006). (2006)