Synthesis of Silicon Hybrid Phenolic Resins with High Si-Content and Nanoscale Phase Separation Structure
Abstract
:1. Introduction
2. Experimental
2.1. Materials
2.2. Preparation of Phenolic Resins (PF)
2.3. Synthesis of Silicon Resins (SR)
2.4. Preparation of Hybrid Resins and Hybrid Composites
2.5. Characterization
3. Results and Discussion
3.1. Structure Characterization of the SR Resins
3.2. Curing Process of SPF Hybrid Resin
3.3. The Morphology of the Cured Hybrid Resins
3.4. Thermal Stability of the SPF Resins
3.5. Ablative Property and Flame Retardancy of the SPF Resins
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Sample | N2 | Air | ||
---|---|---|---|---|
T5% a (°C) | Rmax b (%) | T5% a (°C) | Rmax b (%) | |
PF | 254.7 | 59.7 | 291.6 | 0.0 |
SPF-0 | 285.5 | 71.9 | 337.0 | 32.8 |
SPF-1 | 353.1 | 73.1 | 386.2 | 33.7 |
SPF-2 | 386.8 | 73.9 | 397.3 | 37.4 |
SPF-4 | 405.3 | 74.5 | 401.3 | 38.0 |
Element | SPF-4 Composite | PF Composite | ||
---|---|---|---|---|
Interior | Upper | Interior | Upper | |
C | 20.30wt% | 18.96wt% | 43.19wt% | 26.78wt% |
O | 42.10wt% | 43.93wt% | 24.44wt% | 39.06wt% |
Si | 37.60wt% | 37.11wt% | 32.37wt% | 34.16wt% |
PF | SPF-4 | |
---|---|---|
PeakHRR (kW·m−2) | 150.51 | 117.03 |
MeanHRR (kW·m−2) | 50.79 | 38.14 |
THR (MJ·m−2) | 21.86 | 17.57 |
TSR (m2/m2) | 199.48 | 146.66 |
TOC (g) | 14.28 | 11.40 |
MeanMLR (g/s) | 0.020 | 0.013 |
Residual (%) | 78.72 | 86.43 |
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Yuan, W.; Chen, F.; Li, S.; Du, Y.; Luo, Z.; Sun, Y.; Li, H.; Zhao, T. Synthesis of Silicon Hybrid Phenolic Resins with High Si-Content and Nanoscale Phase Separation Structure. Processes 2020, 8, 1129. https://doi.org/10.3390/pr8091129
Yuan W, Chen F, Li S, Du Y, Luo Z, Sun Y, Li H, Zhao T. Synthesis of Silicon Hybrid Phenolic Resins with High Si-Content and Nanoscale Phase Separation Structure. Processes. 2020; 8(9):1129. https://doi.org/10.3390/pr8091129
Chicago/Turabian StyleYuan, Wenjie, Fenghua Chen, Shan Li, Youpei Du, Zhenhua Luo, Yanan Sun, Hao Li, and Tong Zhao. 2020. "Synthesis of Silicon Hybrid Phenolic Resins with High Si-Content and Nanoscale Phase Separation Structure" Processes 8, no. 9: 1129. https://doi.org/10.3390/pr8091129