KOH 첨가에 의한 페놀수지로 제조된 유리상탄소의 미세구조제어

김지현; 박세민; 임연수; 박홍수; 김명수; Ji-Hyun Kim; Sei-Min Park; Yun-Soo Lim; Hong-Soo Park; Myung-Soo Kim

Polymer(Korea), Vol.26, No.4, 477-482, July, 2002

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KOH 첨가에 의한 페놀수지로 제조된 유리상탄소의 미세구조제어

Effect of KOH Addition on Pore Structure of Glassy Carbon Prepared by Polymerization of Phenolic Resin

김지현, 박세민¹, 임연수, 박홍수 , 김명수^{1, †}

명지대학교 공과대학 세라믹화학공학부, 용인 449-728
¹포항산업과학연구원 재료공정연구센터, 포항 790-330

Ji-Hyun Kim, Sei-Min Park¹, Yun-Soo Lim, Hong-Soo Park , and Myung-Soo Kim^{1, †}

Division of Ceramic and Chemical Engineering, Myongji University, Yongin 449-728, Korea
¹Material Research Division, Research Institute of Industrial Science & Technology, Pohang, Kyungbuk 790-330, Korea

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초록

페놀수지 원료에 인산 경화제를 사용하여 유리상탄소를 제조할 때, 활성화제인 KOH를 첨가하여 미세구조를 제어하였다. KOH의 첨가량에 따라 수율 및 물성을 조사하였다. KOH를 첨가하지 않고 제조한 유리상탄소는 미세기공을 거의 포함하지 않지만, KOH의 첨가량이 증가될수록 미세구조가 발달하여 KOH/페놀수지 비가 0.9에서 비표면적을 870 m(2)/g정도까지 증가시킨 다공질의 유리상탄소를 얻을 수 있었다. 탄화수율은 KOH의 첨가량이 증가될수록 감소하여 40% 수준에서 15%까지 떨어졌고, 전기비저항은 50×10(-4) 에서 60×10(-4) Ωㆍcm으로 약간 증가하였으며, 물 속에서 측정한 겉보기 밀도는 1.5에서 0.9 g/cm(3)까지 감소하였다.

In order to control the micro-pore structure of glassy carbon (GC), an activation agent of KOH was introduced as the glassy carbon was prepared from phenolic resin with a curing agent of phosphoric acid. The yield and properties of GC were investigated as a function of KOH content. Although the GC produced without KOH had nonporous structure except the trace of bubble formation, the GC with KOH had very porous structure. The surface area of GC with KOH increased continuously up to 870 m(2)/g with the increase of KOH content. The carbonization yield and apparent density measured in water reduced from 40 to 15% and from 1.5 to 0.9 g/cm(3), respectively, and the electrical resistivity increased from 50×10(-4) to 60×10(-4) Ωㆍcm with the increase of KOH content.

Keywords:glassy carbon;phenolic resin;KOH;pore structure

[References]

Lee SM, "International Encyclopedia of Composites," vol. 1, p. 226, VCH Publishers (1990)
Marsh H, Heintz EA, Rodriguez-Reinoso F, "Introduction to Carbon Technologies," p. 578, Univ. of Alicante, Secretariado de Publicacines, Spain (1997)
Dietz DS, Oksana K, William LB, Carbon, 37, 619 (1999)
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Kim JH, Kim HS, Lim YS, Park HS, Kim MS, J. Korean Oil Chem. Soc., 18, 153 (2001)
Marsh H, Murdie N, Edward, "Chemistry and Physics of Carbon," eds. by P.L. Walker Jr. and P.A. Thrower, vol. 20, p. 213, Marcel Dekker, New York (1987)
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Kim MS, Hong JC, HWAHAK KONGHAK, 36(6), 913 (1998)
Jeon HJ, Seo G, "Introduction to Catalysis," 4th ed., p. 26, Hanrimwon, Seoul (1995)
"PRO-TECH INFORMATION," p. 11, Pro-Tech, Korea (1998)
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[Related Articles]

[1] Lee SM, "International Encyclopedia of Composites," vol. 1, p. 226, VCH Publishers (1990)

[2] Marsh H, Heintz EA, Rodriguez-Reinoso F, "Introduction to Carbon Technologies," p. 578, Univ. of Alicante, Secretariado de Publicacines, Spain (1997)

[3] Dietz DS, Oksana K, William LB, Carbon, 37, 619 (1999)

[4] Lowell S, Shields JE, "Powder Surface Area Porosity," 3rd ed., Chapman & Hall, London (1991)

[5] Kim JH, Kim HS, Lim YS, Park HS, Kim MS, J. Korean Oil Chem. Soc., 18, 153 (2001)

[6] Marsh H, Murdie N, Edward, "Chemistry and Physics of Carbon," eds. by P.L. Walker Jr. and P.A. Thrower, vol. 20, p. 213, Marcel Dekker, New York (1987)

[7] Otawa T, Yamada M, Tanibata R, Kawagami M, "Gas Separation Technology," eds. by E.F. Vansant, and R. Jewolfs, p. 263, Elsevier, New York (1990)

[8] Kim JY, Lee JG, Hong I, Lee SS, HWAHAK KONGHAK, 34(5), 668 (1996)

[9] Kim MS, Hong JC, HWAHAK KONGHAK, 36(6), 913 (1998)

[10] Jeon HJ, Seo G, "Introduction to Catalysis," 4th ed., p. 26, Hanrimwon, Seoul (1995)

[11] "PRO-TECH INFORMATION," p. 11, Pro-Tech, Korea (1998)

[12] Cullity BD, "Elements of X-ray Diffraction," 2nd ed., p. 42, Addison-Wesley, Reading, Mass. (1990)

[13] Fried JR, "Polymer Science and Technology," p. 145, Prentice-Hall, New Jersey (1995)