Thermal Decomposition Behavior of Polyimide Containing Flame Retardant SiO2 and Mg(OH)2
Abstract
:1. Introduction
2. Experimental
2.1. Materials
2.2. Preparation of Silica/Polyimide (SPI), Magnesium Hydroxide/Polyimide (MPI)
2.3. Characterization
3. Results and Discussion
3.1. Thermal Stability of Polyimide
3.2. The Influence of SiO2 and Mg(OH)2 on the Thermal Stability of Polyimide
3.3. Kinetic Analysis of Polyimide
3.3.1. Calculation of Activation Energy
3.3.2. Multivariate Nonlinear Fitting
3.3.3. Lifetime Prediction of Three Substances
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Sample | Specification | Manufacturer |
---|---|---|
Polyimide (PI) | Thermoplastic, Mw: 50,000–80,000 | Nanjing WANQING chemical Glass ware & Instrument Co., Ltd., Nanjing, China |
Silica (SiO2) | 99.5%, 30 nm | |
Magnesium hydroxide (Mg(OH)2) | AR, 2.86 µm |
Sample | Ⅰ (450–565 °C) | Ⅱ (565–620 °C) | Ⅲ (620–750 °C) | |||
---|---|---|---|---|---|---|
Tp/°C | ∆m/% | Tp/°C | ∆m/% | Tp/°C | ∆m/% | |
PI | 520 | 21.3 | 580 | 48.1 | 667 | 29.6 |
SPI | 524 | 27.6 | — | 46.7 | 667 | 26.1 |
MPI | 527 | 23.8 | 583 | 46.1 | 667 | 29.3 |
Kinetic Parameters | PI (A2 a + An b + C1 c) | PI/SiO2 (A2 + An + Cn d) | PI/Mg(OH)2 (A2 + An + F2 e) | |
---|---|---|---|---|
Ⅰ | LogA1/s−1 | 10.1 | 6.6 | 6.1 |
E1/(kJ/mol) | 187.1 | 134.4 | 127.6 | |
Ⅱ | LogA2/s−1 | 15.1 | 17.6 | 15.7 |
E2/(kJ/mol) | 279.6 | 314.1 | 290.1 | |
Ⅲ | LogA3/s−1 | 13.6 | 21.5 | 15.1 |
E3/(kJ/mol) | 294.4 | 380.4 | 318.3 | |
Correlation Coefficient | R = 0.9997 | R = 0.9964 | R = 0.9998 |
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Wang, J.; Jiang, A.; Li, Y.; Song, D.; Li, Y.; Cheng, L. Thermal Decomposition Behavior of Polyimide Containing Flame Retardant SiO2 and Mg(OH)2. Polymers 2022, 14, 2791. https://doi.org/10.3390/polym14142791
Wang J, Jiang A, Li Y, Song D, Li Y, Cheng L. Thermal Decomposition Behavior of Polyimide Containing Flame Retardant SiO2 and Mg(OH)2. Polymers. 2022; 14(14):2791. https://doi.org/10.3390/polym14142791
Chicago/Turabian StyleWang, Jie, Aifeng Jiang, Yanchun Li, Dongming Song, Yifan Li, and Long Cheng. 2022. "Thermal Decomposition Behavior of Polyimide Containing Flame Retardant SiO2 and Mg(OH)2" Polymers 14, no. 14: 2791. https://doi.org/10.3390/polym14142791