Open-Cell Rigid Polyurethane Foams from Peanut Shell-Derived Polyols Prepared under Different Post-Processing Conditions
Abstract
:1. Introduction
2. Experimental
2.1. Materials
2.2. Preparation of Open-Cell RPUFs
2.3. Characterization and Property Testing of RPUFs
3. Results and Discussion
3.1. Foaming Behaviors
3.2. Apparent Density
3.3. Dimensional Stability and Water Absorption
3.4. Mechanical Properties
3.5. Cell Morphology
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Sample | OH Number, mgKOH·g−1 | Acid Number, mgKOH·g−1 | Viscosity(25°C), mPa·s | Color |
---|---|---|---|---|
A | 451.9 | 1.0 | 47 | black |
B | 473.3 | 1.0 | 143 | black |
C | 451.9 | 8.9 | 47 | black |
D | 473.3 | 8.9 | 143 | black |
Samples | Gel Time, s | Free Rise Time, s |
---|---|---|
RPUF-A | 24 | 39 |
RPUF-B | 28 | 41 |
RPUF-C | 449 | 578 |
RPUF-D | 480 | 593 |
Samples | −25 °C | 85 °C | ||||
---|---|---|---|---|---|---|
Length, % | Width, % | Height, % | Length, % | Width, % | Height, % | |
RPUF-A | −0.13 | −0.07 | −0.03 | 0.02 | 0.08 | 0.07 |
RPUF-B | −0.12 | −0.05 | −0.16 | 0.13 | 0.26 | 0.18 |
RPUF-C | −0.35 | −0.07 | −0.15 | 0.07 | 0.50 | 0.15 |
RPUF-D | −0.34 | −0.10 | −0.27 | 0.06 | 0.27 | 0.20 |
Samples | Water Absorption, % | Swelling Ratio, % |
---|---|---|
RPUF-A | 687 | 1.06 |
RPUF-B | 777 | 1.05 |
RPUF-C | 636 | 1.09 |
RPUF-D | 678 | 1.03 |
Samples | Maximum Pressure, N | Compression Strength, KPa | Stress-Strain | ||
---|---|---|---|---|---|
10%, KPa | 20%, KPa | 25%, KPa | |||
RPUF-A | 63.4 | 248.5 | 221.9 | 278.6 | 307.5 |
RPUF-B | 89.5 | 350.7 | 326.4 | 337.7 | 349.6 |
RPUF-C | 51.0 | 200.1 | 171.4 | 189.0 | 197.9 |
RPUF-D | 59.2 | 231.7 | 204.4 | 215.1 | 218.3 |
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Zhang, G.; Wu, Y.; Chen, W.; Han, D.; Lin, X.; Xu, G.; Zhang, Q. Open-Cell Rigid Polyurethane Foams from Peanut Shell-Derived Polyols Prepared under Different Post-Processing Conditions. Polymers 2019, 11, 1392. https://doi.org/10.3390/polym11091392
Zhang G, Wu Y, Chen W, Han D, Lin X, Xu G, Zhang Q. Open-Cell Rigid Polyurethane Foams from Peanut Shell-Derived Polyols Prepared under Different Post-Processing Conditions. Polymers. 2019; 11(9):1392. https://doi.org/10.3390/polym11091392
Chicago/Turabian StyleZhang, Guangyu, Yumin Wu, Weisheng Chen, Dezhi Han, Xiaoqi Lin, Gongchen Xu, and Qinqin Zhang. 2019. "Open-Cell Rigid Polyurethane Foams from Peanut Shell-Derived Polyols Prepared under Different Post-Processing Conditions" Polymers 11, no. 9: 1392. https://doi.org/10.3390/polym11091392