Preparation and Mechanical Properties of Cross-Linked Polyphosphazene Elastomers Based on Urethane Oligomers |
| |
| Authors: | Yubo Zhou Xiaozhen Tang |
| |
| Affiliation: | 1. School of Chemistry and Chemical Technology , Shanghai Jiao Tong University , Shanghai, China;2. National Key Laboratory of Metallic Matrix Composite Material , Shanghai Jiao Tong University , Shanghai, China |
| |
| Abstract: | Linear poly [bis-(phenoxy)1.8 (4-hydroxybutaneoxy)0.2 phosphazene] (PPHBP) was synthesized and characterized by FTIR, NMR and GPC. Then, PPHBP was cross-linked by different ratio of toluene diisocyanate and 1, 4-butanediol mixtures at mild temperature to prepare PPHBP elastomers. The FTIR spectral analysis demonstrated that the elastomers' chemical composition was the same with our expectations. Tensile testing results indicated that the tensile strength increased from 0.053 to 7.9 MPa and the break elongation approached from 1.82 to 68.7%. The novel cross-linked method might open a simple and economic route to preparing polyphosphazene elastomers. |
| |
| Keywords: | Cross-linking Mechanical properties Polyphosphazenes Urethane oligomers |
|
|
