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An evaluation of the mechanical and adhesion properties of a hydroxyl-terminated polybutadiene (HTPB)-based adhesive including different kinds of chain extenders

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Abstract

The effects of 1,5-pentanediol (PDO) and N, N-Bis (hydroxyethyl) aniline (ISL) chain extenders on the mechanical and adhesion properties of the polyurethane adhesives based on hydroxyl-terminated polybutadiene were studied. Results showed that both chain extenders (ISL and PDO) improved the adhesion properties of the polyurethane on the aluminum substrate. The peel test modulus increased significantly in the presence of both chain extenders. The increase was more pronounced using PDO chain extender (the one with aromatic side group). A decrease in contact angle and an increase in work of adhesion were obtained by addition of chain extenders to the polyurethane. The glass transition temperature of the PU did not change significantly in the presence of chain extenders. However, the cross-linking density and toughness of the polyurethane increased significantly by addition of the chain extenders. Results showed that chain extender without side chain (PDO) improved the adhesion as well as the mechanical properties of the polyurethane much greater than the one with aromatic side ring.

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Authors and Affiliations

  1. Department of Faculty of Chemistry and Chemical Engineering, Maleke-ashtar University of Technology, P.O. Box 15875-1774, Tehran, Iran

    H. Sheikhy & M. Shahidzadeh

  2. Department of Surface Coatings and Corrosion, Institute for Color Science and Technology, No. 59, Vafamanesh St., Hosainabad Sq., Lavizan, Tehran, Iran

    B. Ramezanzadeh

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  1. H. Sheikhy
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  2. M. Shahidzadeh
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  3. B. Ramezanzadeh
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Correspondence to B. Ramezanzadeh.

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Sheikhy, H., Shahidzadeh, M. & Ramezanzadeh, B. An evaluation of the mechanical and adhesion properties of a hydroxyl-terminated polybutadiene (HTPB)-based adhesive including different kinds of chain extenders. Polym. Bull. 72, 755–777 (2015). https://doi.org/10.1007/s00289-015-1303-x

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  • DOI: https://doi.org/10.1007/s00289-015-1303-x

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