Abstract
Characterized with a large gas production and low combustion temperature, the guanidine nitrate (GN) gas-generating agents are studied and applied widely. The determination factors of thermal decomposition properties of guanidine nitrate and basic cupric nitrate (GN/BCN) gas-generating agents for airbag application was investigated by the thermogravimetry-differential scanning calorimetry-mass spectrmetry-Fourier transform infrared spectroscopy (TG-DSC-MS-FTIR) and automatic calorimeter. Five different mass ratios were concerned. Our study showed that the onset reaction temperatures of GN/BCN mixtures were lower than that of individual GN and BCN. The thermal decomposition of GN/BCN mixtures could be divided into three stages, including the dissociation and escape of crystal water, solid (GN)-solid (BCN) phase reaction, and liquid (GN)-solid (BCN) phase reaction. When mass ratio of GN/BCN was 62.24/37.73, the largest value of the reaction heat was measured to 3152.7 J g-1, with N2 and H2O as the major gases during thermal decomposition.
| Original language | English |
|---|---|
| Pages (from-to) | 131-135 |
| Number of pages | 5 |
| Journal | Journal of Thermal Analysis and Calorimetry |
| Volume | 114 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Oct 2013 |
| Externally published | Yes |
Keywords
- Basic cupric nitrate
- Guanidine nitrate
- Real-time analysis
- Thermal decomposition