Article

Mechanical and swelling properties of HTPB-based copolyurethane networks

  1. S. R. Jain1,*,
  2. V. Sekkar2,
  3. V. N. Krishnamurthy2

Article first published online: 10 MAR 2003

DOI: 10.1002/app.1993.070480902

Issue

Journal of Applied Polymer Science

Journal of Applied Polymer Science

Volume 48, Issue 9, pages 1515–1523, 5 June 1993

Additional Information

How to Cite

Jain, S. R., Sekkar, V. and Krishnamurthy, V. N. (1993), Mechanical and swelling properties of HTPB-based copolyurethane networks. J. Appl. Polym. Sci., 48: 1515–1523. doi: 10.1002/app.1993.070480902

Author Information

  1. 1

    Department of Aerospace Engineering, Indian Institute of Science, Bangalore 560 012,

  2. 2

    Vikram Sarabhai Space Center, Trivandrum 695 022, India

*Department of Aerospace Engineering, Indian Institute of Science, Bangalore 560 012

Publication History

  1. Issue published online: 10 MAR 2003
  2. Article first published online: 10 MAR 2003
  3. Manuscript Accepted: 21 AUG 1992
  4. Manuscript Received: 11 JUN 1992

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Abstract

Copolyurethanes of hydroxy terminated polybutadiene (HTPB) and ISRO–Polyol (ISPO), an indigenously developed castor-oil based polyol, have been prepared using toluene diiso-cyanate and hexamethylenediisocyanate. The mechanical strength and swelling characteristics of the copolyurethanes cured with trimethylol propane and triethanolamine have been studied to evolve improved solid propellant binders. By varying the ratios of the two hydroxy pre-polymers, chain extenders, and crosslinkers, copolyurethanes having a wide range of tensile strength and elongation could be obtained. Many of these systems are desirable for their use as propellant binders. The results have been explained in terms of the measured crosslink densities and other swelling properties. © 1993 John Wiley & Sons, Inc.

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