Thermal Properties of Hyperbranched Polymer/HTPB-PU IPN

Abstract:

Hyperbranched polymer/HTPB-PU IPNs were prepared, when HTPB (hydroxyl-terminated polybutadiene) and IPDI (isophorone diisocyanate) were cured into polyurethane (HTPB-PU) at the existence of hyperbranched polymer. Differential scanning calorimetry (DSC) was adopted to study the influence of hyperbranched polymer on thermal properties of HTPB-PU, while IPNs were formed. The result shows that the existance of hyperbranched polymer makes glass transition temperature of HTPB-PU reduces by around 2°C and that HTPB-PU lowers the melting point of hyperbranched polymer. Hyperbranched polymer plays a role of internal plasticization on HTPB-PU, and HTPB-PU influences crystallization of hyperbranched polymer in return.

• Periodical: Key Engineering Materials (Volumes 575-576)
• Pages: 76-80
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.575-576.76
• Online since: September 2013
• Authors: Xue Jing Song, Yun Jun Luo
• Keywords: Hyperbranched Polyether, IPN, Polyurethane (PU), Thermal Property

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