Preparation and Evaluation of Epoxy Resin Prepared from the Liquefied Product of Cotton Stalk
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Preparation of Liquefied Cotton Stalk
2.3. Characterization of Liquefaction Products
2.4. Preparation of Liquefied Cotton-Stalk-Based Epoxy Resins
2.5. Fourier-Transform Infrared (FTIR) Spectroscopy
2.6. Molecular Weight, Epoxy Equivalent Weight, and Viscosity
2.7. Preparation of Cured Resins Using the Cotton-Stalk-Based Epoxy Resins
2.8. Tensile Test
2.9. DSC and TGA
3. Results and Discussion
3.1. Optimization of the Cotton Stalk Liquefaction Process
3.1.1. Effects of Reaction Parameters on the Hydroxyl Value
3.1.2. Effects of Reaction Parameters on the Residue Content
3.1.3. Structural Characteristics of the Liquefied Cotton Stalk and Liquefied Cotton-Stalk-Based Epoxy Resin
3.2. Properties of the Liquefied Cotton-Stalk-Based Epoxy Resin
3.3. Properties of the Cured Liquefied Cotton-Stalk-Based Epoxy Resin
3.4. Thermal Stability of the Epoxy Resins
3.5. Thermal Properties of Cured Liquefied Cotton-Stalk-Based Epoxy Resins
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Parameter | Numerical Value | Minimal Residue (%) | Reference |
---|---|---|---|
Temperature (°C) | 130 | 30.0 | Wang et al. (2020) |
140 | 20.2 | ||
150 | 13.5 | ||
160 | 16.6 | ||
Catalyst content (%) | 1 | 22.4 | |
2 | 20.0 | ||
3 | 13.2 | ||
4 | 12.5 | ||
Solvent/cotton stalk (w/w%) | 3 | 32.4 | |
4 | 28.3 | ||
5 | 12.4 | ||
6 | 10.2 | ||
※ PEG 400/Glycerin (w/w%) | 10:0 | 43.1 | This study |
9:1 | 16.2 | ||
8:2 | 13.2 | ||
7:3 | 16.8 |
Epoxy Resin | Properties of Liquefied Cotton Stalk | Properties of Epoxy Resins | ||||
---|---|---|---|---|---|---|
PEG 400/glycerin | Hydroxyl Value (mg KOH/g) | Viscosity (m Pa·s) | Epoxy Equivalent Weight (g/eq) | Molecular Weight | Viscosity (m Pa·s) | |
LCS-based epoxy resin | 8/2 | 343 | 1020 | 250 | 726 | 540 |
PEG 400/glycerin-based epoxy resin | 8/2 | 321 | 320 | 440 | 690 | 577 |
Epon 828 | -- | --- | --- | 190 | 370 | 12,000 |
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Tuohedi, N.; Wang, Q. Preparation and Evaluation of Epoxy Resin Prepared from the Liquefied Product of Cotton Stalk. Processes 2021, 9, 1417. https://doi.org/10.3390/pr9081417
Tuohedi N, Wang Q. Preparation and Evaluation of Epoxy Resin Prepared from the Liquefied Product of Cotton Stalk. Processes. 2021; 9(8):1417. https://doi.org/10.3390/pr9081417
Chicago/Turabian StyleTuohedi, Nuerjiamali, and Qingyue Wang. 2021. "Preparation and Evaluation of Epoxy Resin Prepared from the Liquefied Product of Cotton Stalk" Processes 9, no. 8: 1417. https://doi.org/10.3390/pr9081417