PES-CTBN-PES 공중합체를 이용한 에폭시 수지의 강인성 향상 연구

김형률; 명범영; 송경헌; 육종일; 윤태호; H. R. Kim; B. Y. Myoung; K. H. Song; J. I. Yuck; T. H. Yoon

Polymer(Korea), Vol.25, No.2, 246-253, March, 2001

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PES-CTBN-PES 공중합체를 이용한 에폭시 수지의 강인성 향상 연구

Toughening of Epoxy Resin with PES-CTBN-PES Triblock Copolymers

김형률, 명범영, 송경헌¹, 육종일², 윤태호 ^†

광주과학기술원 신소재공학과
¹배재대학교 자연과학부
²국방과학연구소

H. R. Kim, B. Y. Myoung, K. H. Song¹, J. I. Yuck², and T. H. Yoon^†

Department of Materials Science and Engineering, Kwangju Institute of Sciencd and Technology, Kwangju, Korea
¹Department of Clothing and Textiles, PaiChai University, Taejon, Korea
²Agency for Defence Development, Taejon, Korea

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초록

아민 말단기를 가지는 PES(6k) 올리고머와 상용 CTBN(1300×13)으로부터 분자량이 15000g/mol인 PES-CTBN-PES 공중합체를 합성하였으며, 이를 에폭시 수지의 강인화제로 사용하였다. DDS를 경화제로 사용하였으며, 공중합체로 강인화된 에폭시 수지의 열특성, 강인성, 굴곡강도 및 내용매성을 측정하여, PES/CTBN 블렌드로 강인화된 에폭시 수지의 특성과 비교하였다. 공중합체는 용매의 사용없이 에폭시 수지에 40wt%까지 첨가가 가능하였으며, 굴곡강도 및 내용매성의 저하 없이 40wt%에서 2.21MPa·m^0.5의 아주 높은 강인성을 보였다. 하지만 PES/CTBN 블렌드로 강인화된 에폭시 수지는 공중합체로 강인화된 시편보다 다소 낮은 강인성, 굴곡강도 및 내용매성을 보였다.

Amine terminated PES-CTBN-PES triblock copolymer was synthesized from PES oligomer and commercial CTBN rubber (CTBN1300 x 13), and molecular weight of the copolymer was controlled to be 15000 g/mole. The copolymer was utilized to toughen diglycidyl ether of bisphenol-A(DGEBA) epoxy resin which was cured with 4,4'-diaminodiphenylsulfone (DDS) and subjected to the measurement of thermal properties, fracture toughness (K(IC)), flexural properties and solvent resistance. The properties were compared with those from the samples modified by CTBN/PES blends. The maximum loading of copolymer into the epoxy resin was 40 wt% without utilizing solvent, at which K(IC) fracture toughness of 2.21 MPa .m(0.5) was obtained without sacrificing flexural properties and chemical resistance. However, the epoxy resin modified with PES/CTBN blend exhibited much lower K(IC) and flexural properties compared to the epoxy resins toughened by PES-CTBN-PES copolymers.

Keywords:epoxy resin;PES-CTBN-PES copolymers;fracture toughness;flexural properties;chemical resistance

[References]

Sultan JN, McGrarry FJ, Polym. Eng. Sci., 13(1), 29 (1973)
Riew CK, Gillham JK, "Rubber Modified Thermoset Resins", Advances in Chemistry Series #208, American Chemical Society, Washington D.C. (1984)
Riew CK, Kinloch AJ, "Toughened Plasitcs I", Advances in Chemistry Series #233, American Chemical Society, Washington D.C. (1984)
Bucknall CB, Partridge IK, Polymer, 24, 639 (1983)
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Yamanaka K, Inoue T, Polymer, 30, 662 (1989)
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Qian JY, Pearson RA, Dimonie VL, Shaffer OL, Elaasser MS, Polymer, 38(1), 21 (1997)
Day RJ, Lovell PA, Pierre D, Polym. Int., 44, 288 (1997)
Kim ST, Kim JK, Choe CR, Hong SI, J. Mater. Sci., 31(13), 3523 (1996)
Cecere J, McGrath JE, Polym. Preprint, 27, 299 (1986)
Hedrick JL, Yilgor I, Jurek M, Hedrick JC, Wilkes GL, McGrath JE, Polymer, 21(11), 2020 (1991)
Yoon TH, Liptak SC, Priddy DB, Mcgrath JE, J. Adhes., 45(1), 191 (1994)
Morrison RT, Boyd RN, "Organic Chemistry", ch. 36, Prentice Hall, Englewood Cliffs, New Jersy (1992)

[Referenced By]

[Related Articles]

[1] Sultan JN, McGrarry FJ, Polym. Eng. Sci., 13(1), 29 (1973)

[2] Riew CK, Gillham JK, "Rubber Modified Thermoset Resins", Advances in Chemistry Series #208, American Chemical Society, Washington D.C. (1984)

[3] Riew CK, Kinloch AJ, "Toughened Plasitcs I", Advances in Chemistry Series #233, American Chemical Society, Washington D.C. (1984)

[4] Bucknall CB, Partridge IK, Polymer, 24, 639 (1983)

[5] Bauer RS, Stenzenberger HD, Romer W, SAMPE Proceeding, 35, 395 (1990)

[6] Yamanaka K, Inoue T, Polymer, 30, 662 (1989)

[7] Diamont J, Moulton RJ, SAMPE Proceeding, 29, 422 (1990)

[8] Qian JY, Pearson RA, Dimonie VL, Shaffer OL, Elaasser MS, Polymer, 38(1), 21 (1997)

[9] Day RJ, Lovell PA, Pierre D, Polym. Int., 44, 288 (1997)

[10] Kim ST, Kim JK, Choe CR, Hong SI, J. Mater. Sci., 31(13), 3523 (1996)

[11] Cecere J, McGrath JE, Polym. Preprint, 27, 299 (1986)

[12] Hedrick JL, Yilgor I, Jurek M, Hedrick JC, Wilkes GL, McGrath JE, Polymer, 21(11), 2020 (1991)

[13] Yoon TH, Liptak SC, Priddy DB, Mcgrath JE, J. Adhes., 45(1), 191 (1994)

[14] Morrison RT, Boyd RN, "Organic Chemistry", ch. 36, Prentice Hall, Englewood Cliffs, New Jersy (1992)