An investigation of the effects of pre-polymer functionality on the curing behavior and mechanical properties of HTPB-based polyurethane

F. Shaghayeghi Toosi; M. Shahidzadeh; B. Ramezanzadeh

Journal of Industrial and Engineering Chemistry, Vol.24, 166-173, April, 2015

DOI10.1016/j.jiec.2014.09.025 Export Citation

An investigation of the effects of pre-polymer functionality on the curing behavior and mechanical properties of HTPB-based polyurethane

F. Shaghayeghi Toosi, M. Shahidzadeh, and B. Ramezanzadeh^{1, †}

Department of Chemistry and Chemical Engineering, Faculty of Material and Chemical Engineering, Malek-Ashtar University of Technology (MUT), PO 16765-3454, Lavizan, Tehran, Iran
¹Department of Surface Coatings and Corrosion, Institute for Color Science and Technology (ICST), PO 16765-654, Tehran, Iran

E-mail:

In this study, the effective functionalities obtained from gel point, dynamic mechanical thermal analysis (DMTA) and tensile tests were compared. Three types of hydroxyl-terminated polybutadiene (HTPB) resins with different functionalities were cured with different curing agents. Results revealed that the functionalities obtained from gel point test were not the same as those obtained from tensile test. Also, the HTPB with the lowest effective functionality resulted in the elastomer with the lowest cross-linking density and stress at break. However, the HTPB with the highest effective functionality did not cause the greatest cross-linking density and stress at break.

Keywords:HTPB;Polyurethane elastomer;Curing behavior;Mechanical properties;Gel time

[References]

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[2] Sheikhy H, Shahidzadeh M, Ramezanzadeh B, Noroozi F, J. Ind. Eng. Chem., 19(6), 1949 (2013)

[3] Ajaz AG, Rubber Chem. Technol., 68, 481 (1995)

[4] Zafar F, Sharmin E (Eds.), Polyurethane, InTech, Rijeka, Croatia, 2012.

[5] Nunes F, Martin JR, Johnson JF, Polym. Eng. Sci., 22, 205 (1982)

[6] Ono K, Shimada H, Nishimura T, Yamashita S, Okamoto H, Minoura Y, J. Appl. Polym. Sci., 21, 3223 (1977)

[7] Gaur B, Lochab B, Choudhary V, Varma IK, J. Macromol. Sci., 43, 505 (2003)

[8] Zhang L, Structure-Property Relationship of Polyurethane Flexible Foam Made from Natural Oil Polyols, 2008 Minneapolis, Minnesota.

[9] Panicker SS, Ninan KN, J. Appl. Polym. Sci., 63(10), 1313 (1997)

[10] Ninan KN, Balagangadharan VP, Catherine KB, Polymer, 32, 628 (1991)

[11] Ninan KN, Balagangadharan VP, Ambikadev K, Catherine KB, Polym. Int., 31, 255 (1993)

[12] Poletto S, Pham QT, Macromol. Chem. Phys., 195, 3901 (1994)

[13] Wingborg N, Improving the Mechanical Properties of Composite Rocket Propellants, Ph.D. Thesis, 2004 Stockholm.

[14] Rocco JAFF, Lima JES, Frutuoso AG, Iha K, Ionashiro M, Matos JR, J. Therm. Anal. Calorim., 77, 803 (2004)

[15] Van Dam J, Characterization of Macromolecular Structure, National Academy of Sciences, Washington, DC, 1968p. 336.

[16] Bielsa RO, Brandolini MC, Akcelrud L, Meira GR, J. Appl. Polym. Sci., 54(13), 2125 (1994)

[17] Sekkar V, Venkatachalam S, Ninan KN, Eur. Polym. J., 38, 169 (2002)

[18] Araujo RCS, Pasa VMD, J. Appl. Polym. Sci., 88(3), 759 (2003)

[19] Haska SB, Bayramli E, Pekel F, Ozkar S, J. Appl. Polym. Sci., 64(12), 2347 (1997)

[20] Ruediger AH, Strecker D, French M, J. Appl. Polym. Sci., 12, 1697 (1968)

[21] Consaga JP, J. Appl. Polym. Sci., 14, 2157 (1970)

[22] Smith DM, Bryant WMD, J. Am. Chem. Soc., 57, 61 (1935)

[23] Ahmad N, Amir S, Naheed R, Baig ZI, Rizvi MH, Adv. Mater. Res., 570, 37 (2012)

[24] Sadeghi GM, Barikani M, Morshedian J, Taromi FA, Iran. Polym. J., 12(6), 515 (2003)

[25] Stagg HE, Analyst, 71, 557 (1946)

[26] Liu L, He G, Wang Y, J. Therm. Anal. Calorim., 114, 1057 (2013)

[27] Bier JM, Verbeek CJR, Lay MC, J. Therm. Anal. Calorim., 112, 1303 (2013)

[28] Kaewtatip K, Poungroi M, Hollo B, Szecseny KM, J. Therm. Anal. Calorim., 115, 833 (2014)

[29] DeLuca LT, Galfetti L, Maggi F, Colombo G, Merotto L, Acta Astronaut., 92, 150 (2013)