Nihon University
Nihon University
Nihon University
Nihon University
Department of Space Flight Systems, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)
The purpose of this study is synthesis and thermal characterization of polyurethane containing nitro groups and azide groups using 2,2-Dinitropropan-1,3-diol (DNPD). Structural analysis were used by infrared spectroscopy (IR) and hydrogen nuclear magnetic resonance (1H-NMR). Thermal properties were used thermogravimetry-differential thermal analysis (TG-DTA) and sealed cell differential scanning calorimetry (SC-DSC). Synthesis of polyurethane containing nitro groups in following, a mixture of poly tetramethylene ether glycol (PTMG) and 4,4-diphenyimethane diisocyanate (MDI) were stirred at 90 C for 20 minutes. The mixture were provided in to solvent, N,N-dimetylformamide and added DNPD, and then the mixture was stirred at 90 C for 10 minutes. The products were dried in vacuo at 80 C for 3 hours. The IR, C=O stretching vibration (1730 cm(exp -1)), N-H bending vibration (1530 cm(exp -1)) appeared in the IR spectrum. The products exhibited exotherm at temperature range of 297-420 C, and mass loss of 85 % at 500 C from the TG-DTA curves.
内容記述
形態: カラー図版あり
内容記述（英）
Physical characteristics: Original contains color illustrations
ロケット推進薬のウレタン系バインダ合成およびキャラクタリゼーション
AA1530013004.pdf
(744.79KB)
