경화온도에 따른 Castor Oil/epoxy의 강인성

김종석; 홍석표

Journal of the Korean Industrial and Engineering Chemistry, Vol.8, No.6, 973-978, December, 1997

Export Citation

경화온도에 따른 Castor Oil/epoxy의 강인성

The Toughness of Castor Oil Modified Epoxy Resins by Various Cure Temperatures

김종석, 홍석표

초록

Diglycidyl ether of bisphenol A(DGEBA)수지에 castor oil(CO)로 혼합한 후 경화촉매인 tris(dimethylaminomethyl) phenol (DMP-30)로 반응시킨 에폭시의 강인성과 모폴로지를 관찰하였다. 개질제인 CO와 에폭시수지의 혼합물은 기존의 에폭시 개질제인 carboxyl terminated butadiene acrylonitrile(CTBN)보다 상용성이 좋았다. 경화온도와 CO의 양이 증가할수록 유리전이온도가 감소하였는데, CO/에폭시 경화물은 경화온도가 증가할수록 가교밀도가 감소하면서 연성구조를 갖게 되는 것으로 해석되었다. CO/에폭시 경화물은 경화온도 40℃에서 CO의 양이 증가함에 따라 강인성이 약간 증가하였다. 경화온도가 증가와 CO의 양이 증가함에 따라 강인성이 증가하였다.

Test specimens of polymer-cement concrete composites were prepared using styrene-butadiene rubber(SBR) latex, ethylenevinyl acetate(EVA) and polyacrylic ester(PAE) emulsions as polymer dispersions in cement modified system at constant slump(10±0.5㎝), then compressive and flexural strengths water absorption, pore size distribution, and microstructures were investigated. Compressive and flexural strengths of these composites were remarkably improved with an increase of polymer-cement ratio. These composites had a desirable pore size distribution against frost damage due to a small capillary pore volume. Continuous polymer film was able to form in higher than 15% of polymer-cement ratio.

[References]

May CA, "Epoxy Resins Chemistry and Technology," ed. by C.A. May, p. 1 2nd ed., Marcel Dekker, Inc., New York (1988)
Fang DP, Frontini PM, Riccardi CC, Williams RJ, Polym. Eng. Sci., 35(17), 1359 (1995)
Kim DS, Cho K, Kim JK, Park CE, Polym. Eng. Sci., 36(6), 755 (1996)
Parker DS, Sue HJ, Huang J, Yee AF, Polymer, 31, 2267 (1990)
Sue HJ, Garcia EI, Opchard NA, J. Polym. Sci. B: Polym. Phys., 31, 595 (1993)
Lyu SP, Zhu XG, Qi ZN, J. Polym. Sci. B: Polym. Phys., 32(13), 2151 (1994)
Kim DS, Kim SC, Polym. Eng. Sci., 34(21), 1598 (1994)
Chen TK, Jan YH, Polym. Eng. Sci., 35(9), 778 (1995)
Guild FJ, Kinloch AJ, J. Mater. Sci. Lett., 13(9), 629 (1994)
Pearson RA, Yee AF, J. Mater. Sci., 21, 2462 (1986)
Yee AF, Pearson RA, J. Mater. Sci., 21, 2475 (1986)
Pearson RA, Yee AF, J. Mater. Sci., 24, 2571 (1989)
Naughton FC, J. Am. Oil Chem. Soc., 51, 65 (1974)
Devia N, Manson JA, Sperling LH, Macromolecules, 12, 360 (1979)
Petrovic Z, Fajnik D, J. Appl. Polym. Sci., 29, 1031 (1984)
Kim SL, Manson JA, Misra SC, "Epoxy Resin Chemistry," ed. by R.S. Bauer, p. 183, Advances in Chemistry 114, American Chemical Society, Washington D.C. (1979)
Gupta VB, Drazal LT, Lee CYC, Rich MJ, Polym. Eng. Sci., 25, 822 (1985)
Chan LC, Nae HN, Gillham JK, J. Appl. Polym. Sci., 29, 3307 (1984)
Levita G, Marchetti A, Butta E, Polymer, 26, 1110 (1985)
Butta E, Levta G, Marchetti A, Lazzeri L, Polym. Eng. Sci., 26, 63 (1986)
Enns JB, Gillham JK, J. Appl. Polym. Sci., 28, 2831 (1983)
Ruseckaite RA, Hu L, Riccardi CC, Williams RJJ, Polym. Int., 30, 287 (1993)

[Referenced By]

[1] May CA, "Epoxy Resins Chemistry and Technology," ed. by C.A. May, p. 1 2nd ed., Marcel Dekker, Inc., New York (1988)

[2] Fang DP, Frontini PM, Riccardi CC, Williams RJ, Polym. Eng. Sci., 35(17), 1359 (1995)

[3] Kim DS, Cho K, Kim JK, Park CE, Polym. Eng. Sci., 36(6), 755 (1996)

[4] Parker DS, Sue HJ, Huang J, Yee AF, Polymer, 31, 2267 (1990)

[5] Sue HJ, Garcia EI, Opchard NA, J. Polym. Sci. B: Polym. Phys., 31, 595 (1993)

[6] Lyu SP, Zhu XG, Qi ZN, J. Polym. Sci. B: Polym. Phys., 32(13), 2151 (1994)

[7] Kim DS, Kim SC, Polym. Eng. Sci., 34(21), 1598 (1994)

[8] Chen TK, Jan YH, Polym. Eng. Sci., 35(9), 778 (1995)

[9] Guild FJ, Kinloch AJ, J. Mater. Sci. Lett., 13(9), 629 (1994)

[10] Pearson RA, Yee AF, J. Mater. Sci., 21, 2462 (1986)

[11] Yee AF, Pearson RA, J. Mater. Sci., 21, 2475 (1986)

[12] Pearson RA, Yee AF, J. Mater. Sci., 24, 2571 (1989)

[13] Naughton FC, J. Am. Oil Chem. Soc., 51, 65 (1974)

[14] Devia N, Manson JA, Sperling LH, Macromolecules, 12, 360 (1979)

[15] Petrovic Z, Fajnik D, J. Appl. Polym. Sci., 29, 1031 (1984)

[16] Kim SL, Manson JA, Misra SC, "Epoxy Resin Chemistry," ed. by R.S. Bauer, p. 183, Advances in Chemistry 114, American Chemical Society, Washington D.C. (1979)

[17] Gupta VB, Drazal LT, Lee CYC, Rich MJ, Polym. Eng. Sci., 25, 822 (1985)

[18] Chan LC, Nae HN, Gillham JK, J. Appl. Polym. Sci., 29, 3307 (1984)

[19] Levita G, Marchetti A, Butta E, Polymer, 26, 1110 (1985)

[20] Butta E, Levta G, Marchetti A, Lazzeri L, Polym. Eng. Sci., 26, 63 (1986)

[21] Enns JB, Gillham JK, J. Appl. Polym. Sci., 28, 2831 (1983)

[22] Ruseckaite RA, Hu L, Riccardi CC, Williams RJJ, Polym. Int., 30, 287 (1993)