One-Step Synthesis of Highly Efficient Oligo(phenylphosphonic Dihydroxypropyl Silicone Oil) Flame Retardant for Polycarbonate
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Synthesis of Oligo(Phenylphosphonic Dihydroxypropyl Silicone Oil)
2.3. Preparation of Flame-Retardant PC Blends
2.4. Characterization
3. Results and Discussion
3.1. Structural Characterization of PPSO
3.2. Flame Retardancy
3.3. Thermal Degradation
3.4. Fire Behavior of PC-Based Blends
3.5. Flame Retardant Mechanism
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Sample | PC (phr) | Talc (phr) | PPSO (phr) | LOI (%) | UL-94 Rating (2 mm) | Drip** or not |
---|---|---|---|---|---|---|
PC | 100 | 0 | 0 | 25 | V-2 | Yes |
PC/PPSO-0 | 100 | 5 | 0 | 26 | V-2 | Yes |
PC/PPSO-1 | 100 | 5 | 1 | 28 | V-1 | No |
PC/PPSO-1.3 | 100 | 5 | 1.3 | 29 | V-0 | No |
PC/PPSO-1.6 | 100 | 5 | 1.6 | 30 | V-0 | No |
Sample | Nitrogen | Air | ||||||
---|---|---|---|---|---|---|---|---|
T5% (°C) | Tmax (°C) | Residues at 750 °C (%) | T5% (°C) | Tmax1 (°C) | Tmax2 (°C) | Tmax3 (°C) | Residues at 750 °C (%) | |
PC | 504 | 549 | 22.6 | 440 | 459 | 509 | 575 | 0.8 |
PC/PPSO-0 | 472 | 510 | 23.8 | 451 | 467 | 510 | 567 | 4.4 |
PC/PPSO-1 | 476 | 509 | 24.2 | 455 | 487 | 522 | 561 | 4.5 |
PC/PPSO-1.3 | 490 | 517 | 24.7 | 449 | 483 | 519 | 558 | 4.9 |
Sample | PC | PC/PPSO-0 | PC/PPSO-1.3 |
---|---|---|---|
TTI (s) | 96 | 93 | 60 |
PHRR (kw/m2) | 416 | 370 | 230 |
tp-HRR (s) | 220 | 270 | 280 |
THR (MJ/m2) | 65.6 | 62.5 | 52.6 |
TSP (m2) | 27.1 | 21.6 | 15.4 |
av-EHC (MJ/kg) | 20.1 | 18.9 | 17.9 |
FPI | 0.23 | 0.25 | 0.26 |
Sample | C1s (%) | O1s (%) | Mg1s (%) | Si2p (%) | P2p (%) |
---|---|---|---|---|---|
External | 63.28 | 24.52 | 5.84 | 5.69 | 0.68 |
Internal | 69.36 | 20.90 | 4.67 | 4.40 | 0.66 |
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Qiao, Y.; Wang, Y.; Zou, M.; Xu, D.; Pan, Y.; Luo, Z.; Wang, B. One-Step Synthesis of Highly Efficient Oligo(phenylphosphonic Dihydroxypropyl Silicone Oil) Flame Retardant for Polycarbonate. Polymers 2019, 11, 1977. https://doi.org/10.3390/polym11121977
Qiao Y, Wang Y, Zou M, Xu D, Pan Y, Luo Z, Wang B. One-Step Synthesis of Highly Efficient Oligo(phenylphosphonic Dihydroxypropyl Silicone Oil) Flame Retardant for Polycarbonate. Polymers. 2019; 11(12):1977. https://doi.org/10.3390/polym11121977
Chicago/Turabian StyleQiao, Yihui, Yanbin Wang, Menghao Zou, Dehuan Xu, Yingtong Pan, Zhonglin Luo, and Biaobing Wang. 2019. "One-Step Synthesis of Highly Efficient Oligo(phenylphosphonic Dihydroxypropyl Silicone Oil) Flame Retardant for Polycarbonate" Polymers 11, no. 12: 1977. https://doi.org/10.3390/polym11121977