열잠재성 개시제에 의한 에폭시 수지 경화계의 산화 분위기하에서의 열적 특성

이재락; 권현; 박수진; 이상봉

Polymer(Korea), Vol.22, No.3, 435-445, May, 1998

Export Citation

열잠재성 개시제에 의한 에폭시 수지 경화계의 산화 분위기하에서의 열적 특성

Thermal Characteristics of Thermo-Latent Initiator/Epoxy Cure Systems in Oxidation Conditions

이재락, 권현, 박수진, 이상봉

초록

DGEBA계 이관능성 에폭시 수지 (diglycidyl ether of bisphenol A, YD-128)에 열잠재성 촉매형 경화제인 N-benzylpyrazinium hexafluoroantimonate (BPH)를 1, 2, 3 wt % 첨가하여 경화시킨 시편의 고온 특성을 연구하였다. DGEBA에 BPH를 첨가하여 경화된 시편을 300℃ 산화 분위기 하에서 0, 2, 4, 8시간 유지시켰다. DGEBA/BPH에서 굴곡 특성과 그 파단면의 변화를 살펴본 결과 BPH 함량이 2, 3 wt%일 때 최적값을 보였다. 고온 산화 분위기하에서 분해시 필요한 활성화 에너지를 측정한 결과 본 DGEBA/BPH계에서 이루어진 구조는 체류시간에 따라 안정화되는 특성을 보였으며, 굴곡 특성에서도 유사한 경향을 보여주었다. 이는 경화가 끝난 후 시편내에 존재하는 미반응 반응기가 후경화에 의해 완전히 반응함으로써 나타나는 현상으로 해석할 수 있다.

The thermal characteristics of epoxy resin (diglycidy1 ether of bisphenol A, DGEEA, YD-128) containing 1, 2, 3 wt% of thermo-latent initiator, N-benzylpyrazinium hexafluoroantimonate (BPH), were investigated. The specimens were stored at 300℃ in oxidation conditions for 0, 2, 4, and 8 hours. The flexural properties and fracture surface of the DGEBA/BPH system showed an optimum value at about 2∼3 wt% of BPH. The result of activation energy for thermal degradation in oxidation conditions showed that internal structure of DGEBA/BPH systems was stabilized as the retention time was increased. The similar result was also shown in flexural behavior. These results could be explained by the post-reaction of unretracted functional groups in the cured specimens by Post-curing.

Keywords:DGEBA;N-benzylpyrazinium hexapluoroantimonate (BPH);activation energy;flexural properties;post-curing

[References]

May CA, "Epoxy Resins," Marcel Dekker Inc., New York (1988)
Penn LS, Chiao TT, "Handbook of Composites," ed. by G. Lubin, p. 57, Van Norstrand Reinhold Co., Inc., New York (1982)
Odian G, "Principles of Polymerization," 3nd, Chap. 7, John Wiley & Sons, Inc., New York (1991)
Ishida H, Low HY, Macromolecules, 30(4), 1099 (1997)
Inoue S, Aida T, "Ring-Opening Polymerization," eds. by K.J. Ivin and T. Saegusa, vol. I, p. 185, Elsevier Sci., New York (1984)
Wyzgoski MG, J. Appl. Polym. Sci., 26, 1689 (1981)
Pappas SP, Hill LW, J. Coat. Technol., 53, 43 (1981)
Gu J, Narang SC, Pearce EM, J. Appl. Polym. Sci., 30, 2997 (1985)
Kim YC, Park SJ, Lee JR, Polym. J., 29, 759 (1997)
Zacharia RE, Simon SL, J. Appl. Polym. Sci., 64(1), 127 (1997)
Lee SB, Park YS, Lee KW, Endo T, Chem. Lett., 16, 287 (1995)
Matejka L, Chabanne P, Tighzert L, Pascault JP, J. Polym. Sci. A: Polym. Chem., 32(8), 1447 (1994)
Ryan ME, M.S. Thesis, McGill Univ., Montreal, Canada (1973)
Schulltz WJ, "International Encyclopedia of Composites," ed. by S.M. Lee, vol. 2, p. 77, VCH Pub. Inc., New York (1990)
Kim DS, Lee JR, Polym.(Korea), 18(2), 199 (1994)
Ishida H, Allen DJ, J. Polym. Sci. B: Polym. Phys., 34(6), 1019 (1996)
Horowitz HH, Metzger G, Anal. Chem., 35, 1464 (1963)
Wellinghoff ST, Baer E, J. Appl. Polym. Sci., 22, 2025 (1987)
Peterson RE, "Stress Concentration Factors," Wiley-Interscience, New York (1974)
Ward IM, "Mechanical Property of Solid Polymers," John Wiley & Sons, New York (1982)

[Referenced By]

[1] May CA, "Epoxy Resins," Marcel Dekker Inc., New York (1988)

[2] Penn LS, Chiao TT, "Handbook of Composites," ed. by G. Lubin, p. 57, Van Norstrand Reinhold Co., Inc., New York (1982)

[3] Odian G, "Principles of Polymerization," 3nd, Chap. 7, John Wiley & Sons, Inc., New York (1991)

[4] Ishida H, Low HY, Macromolecules, 30(4), 1099 (1997)

[5] Inoue S, Aida T, "Ring-Opening Polymerization," eds. by K.J. Ivin and T. Saegusa, vol. I, p. 185, Elsevier Sci., New York (1984)

[6] Wyzgoski MG, J. Appl. Polym. Sci., 26, 1689 (1981)

[7] Pappas SP, Hill LW, J. Coat. Technol., 53, 43 (1981)

[8] Gu J, Narang SC, Pearce EM, J. Appl. Polym. Sci., 30, 2997 (1985)

[9] Kim YC, Park SJ, Lee JR, Polym. J., 29, 759 (1997)

[10] Zacharia RE, Simon SL, J. Appl. Polym. Sci., 64(1), 127 (1997)

[11] Lee SB, Park YS, Lee KW, Endo T, Chem. Lett., 16, 287 (1995)

[12] Matejka L, Chabanne P, Tighzert L, Pascault JP, J. Polym. Sci. A: Polym. Chem., 32(8), 1447 (1994)

[13] Ryan ME, M.S. Thesis, McGill Univ., Montreal, Canada (1973)

[14] Schulltz WJ, "International Encyclopedia of Composites," ed. by S.M. Lee, vol. 2, p. 77, VCH Pub. Inc., New York (1990)

[15] Kim DS, Lee JR, Polym.(Korea), 18(2), 199 (1994)

[16] Ishida H, Allen DJ, J. Polym. Sci. B: Polym. Phys., 34(6), 1019 (1996)

[17] Horowitz HH, Metzger G, Anal. Chem., 35, 1464 (1963)

[18] Wellinghoff ST, Baer E, J. Appl. Polym. Sci., 22, 2025 (1987)

[19] Peterson RE, "Stress Concentration Factors," Wiley-Interscience, New York (1974)

[20] Ward IM, "Mechanical Property of Solid Polymers," John Wiley & Sons, New York (1982)