Characterization of Segmented Block Copolyurethane Network Based on Glycidyl Azide Polymer and Polycaprolactone

Byoung Sun Min; Seung Won Ko

Macromolecular Research, Vol.15, No.3, 225-233, April, 2007

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Characterization of Segmented Block Copolyurethane Network Based on Glycidyl Azide Polymer and Polycaprolactone

Byoung Sun Min^†, and Seung Won Ko

RDC-4-5, Agency for Defense Development, Daejeon 305-600, Korea

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To improve the poor mechanical and low-temperature properties of glycidyl azide polymer (GAP)-based propellants, the addition of binders was investigated using GAP and flexible polymer backbone-structural polycaprolactone (PCP) at various weight(wt) ratios, and varying the ratio of Desmodur N-100 pluriisocyanate (N-100) to isophorone diisocyanate (IPDI). Using Gee’s theory, the solubility parameter of the PCP network was determined, in order to elucidate the physical and chemical interaction between GAP and PCP. The structure of the binder networks was characterized by measuring the cross-link densities and molecular weights between cross-links (Mc) obtained by a swelling experiment using Flory-Rhener theory. The thermal and mechanical properties of the segmented block copolyurethane (GAP-b-PCP) binders prepared by the incorporation of PCP into the binder recipes were investigated, along with the effect of the different curatives ratios.

Keywords:glycidyl azide polymer (GAP);polycaprolactone(PCP);network structure;thermal properties;mechanical properties

[References]

A. Provatas, Energetic Polymers and Plasticizers for Explosive Formulation - A Review of Recent Advances, DSTO-TR-0966 Commonwealth of Australia, Australia, 2000
Frankel MB, Grant LR, Flanagan JE, J. Prop. Power, 8, 560 (1992)
Kubota N, Sonobe T, Yamamoto A, Shimizu H, J. Prop. Power, 6, 686 (1990)
Konami I, Kobayashi K, Kato K, Solid Propellant Chemistry, Combustion, and Motor Interior Ballistics, V. Yang, T. B. Brill, and W. Z. Ren, Eds., Progress in Astronautics and Aeronautics, AIAA, 2000, Vol. 185, p. 455
Longevialle Y, Mace H, Berteleau G, Golfier M, in Proc. ADPA Intern. Symp. on Energetic Materials Technology, 1995, pp. 125-131
Mama HP, Space Flight, 38, 409 (1994)
Stacer RG, Husband DM, Propell. Explos. Pyrot., 16, 167 (1991)
Min BS, J. Kor. Inst. Mil. Sci. Tech., 8, 69 (2005)
Jain SR, Sekkar V, Krishnamurthy VN, J. Appl. Polym. Sci., 48, 1515 (1993)
Sutton ES, AIAA/SAE/ASME 20th Joint Propulsion Conference, 1236 (1984)
Comfort TF, Steckman RM, Hartman KO, CPIA Publication 630, 3, 87 (1995)
Vasudevan V, Sundararajan G, Propell. Explos. Pyrot., 24, 295 (1999)
Subramanian K, Eur. Polym. J., 35, 1403 (1999)
Bui VT, Ahad E, Rheaume D, Raymond MP, J. Appl. Polym. Sci., 62(1), 27 (1996)
Mohan YM, Raju KM, Int. J. Polym. Mat., 55, 203 (2006)
Mohan YM, Raju MP, Raju KM, Int. J. Polym. Mat., 54, 651 (2005)
Min BS, Baek G, Ko SW, Submitted
Kolonko KJ, Barners MW, Biegert LL, US Patent 4,77,432 (1988)
Hong SW, Kim KH, Huh J, Ahn CH, Jo WH, Macromol. Res., 13(5), 397 (2005)

[Referenced By]

[1] A. Provatas, Energetic Polymers and Plasticizers for Explosive Formulation - A Review of Recent Advances, DSTO-TR-0966 Commonwealth of Australia, Australia, 2000

[2] Frankel MB, Grant LR, Flanagan JE, J. Prop. Power, 8, 560 (1992)

[3] Kubota N, Sonobe T, Yamamoto A, Shimizu H, J. Prop. Power, 6, 686 (1990)

[4] Konami I, Kobayashi K, Kato K, Solid Propellant Chemistry, Combustion, and Motor Interior Ballistics, V. Yang, T. B. Brill, and W. Z. Ren, Eds., Progress in Astronautics and Aeronautics, AIAA, 2000, Vol. 185, p. 455

[5] Longevialle Y, Mace H, Berteleau G, Golfier M, in Proc. ADPA Intern. Symp. on Energetic Materials Technology, 1995, pp. 125-131

[6] Mama HP, Space Flight, 38, 409 (1994)

[7] Stacer RG, Husband DM, Propell. Explos. Pyrot., 16, 167 (1991)

[8] Min BS, J. Kor. Inst. Mil. Sci. Tech., 8, 69 (2005)

[9] Jain SR, Sekkar V, Krishnamurthy VN, J. Appl. Polym. Sci., 48, 1515 (1993)

[10] Sutton ES, AIAA/SAE/ASME 20th Joint Propulsion Conference, 1236 (1984)

[11] Comfort TF, Steckman RM, Hartman KO, CPIA Publication 630, 3, 87 (1995)

[12] Vasudevan V, Sundararajan G, Propell. Explos. Pyrot., 24, 295 (1999)

[13] Subramanian K, Eur. Polym. J., 35, 1403 (1999)

[14] Bui VT, Ahad E, Rheaume D, Raymond MP, J. Appl. Polym. Sci., 62(1), 27 (1996)

[15] Mohan YM, Raju KM, Int. J. Polym. Mat., 55, 203 (2006)

[16] Mohan YM, Raju MP, Raju KM, Int. J. Polym. Mat., 54, 651 (2005)

[17] Min BS, Baek G, Ko SW, Submitted

[18] Kolonko KJ, Barners MW, Biegert LL, US Patent 4,77,432 (1988)

[19] Hong SW, Kim KH, Huh J, Ahn CH, Jo WH, Macromol. Res., 13(5), 397 (2005)