Effects of Nano-CaCO3 Content on the Crystallization, Mechanical Properties, and Cell Structure of PP Nanocomposites in Microcellular Injection Molding
Abstract
:1. Introduction
2. Experimental
2.1. Material
2.2. Preparation of Nanocomposites
2.3. Foaming Process
2.4. Characterizations
3. Results and Discussion
3.1. Effect of the Content of Nano-CaCO3 on the Crystallization Behaviour
3.1.1. Crystallization and Melting
3.1.2. Thermogravimetric Analysis
3.2. Effect of the Content of Nano-CaCO3 on the Mechanical Properties
3.2.1. Tensile Properties
3.2.2. Flexural Properties
3.2.3. Impact Properties
3.3. Effect of the Content of Nano-CaCO3 on the Cells Structure
3.3.1. The Cell Structure of Vertical Section
3.3.2. The Cell Structure of Parallel Section
4. Conclusions
Author Contributions
Acknowledgments
Conflicts of Interest
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Content of nano-CaCO3 (wt%) | Tm (°C) | Tc (°C) | Hm (J/g) | Crystallinity (%) |
---|---|---|---|---|
0 | 169.62 | 126.29 | 80.83 | 38.67 |
2 | 169.35 | 128.85 | 78.92 | 37.76 |
4 | 169.00 | 129.57 | 85.26 | 40.79 |
6 | 168.61 | 129.46 | 86.56 | 41.42 |
8 | 169.98 | 130.63 | 87.61 | 41.92 |
10 | 169.39 | 131.13 | 87.83 | 42.23 |
Content of Nano-CaCO3 (wt%) | Td (°C) | DTG at Td (%/min) | Residue at 550 °C (%) | Residue at 800 °C (%) |
---|---|---|---|---|
0 | 454.6 | −30 | 0.3 | 0.1 |
2 | 456.3 | −28.4 | 2.5 | 1.4 |
4 | 452.9 | −20.6 | 5.1 | 2.8 |
6 | 454.4 | −23.5 | 6.4 | 3.9 |
8 | 454.3 | −22.8 | 8.7 | 5.2 |
10 | 452.4 | −21.9 | 10.8 | 7.2 |
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Mao, H.; He, B.; Guo, W.; Hua, L.; Yang, Q. Effects of Nano-CaCO3 Content on the Crystallization, Mechanical Properties, and Cell Structure of PP Nanocomposites in Microcellular Injection Molding. Polymers 2018, 10, 1160. https://doi.org/10.3390/polym10101160
Mao H, He B, Guo W, Hua L, Yang Q. Effects of Nano-CaCO3 Content on the Crystallization, Mechanical Properties, and Cell Structure of PP Nanocomposites in Microcellular Injection Molding. Polymers. 2018; 10(10):1160. https://doi.org/10.3390/polym10101160
Chicago/Turabian StyleMao, Huajie, Bo He, Wei Guo, Lin Hua, and Qing Yang. 2018. "Effects of Nano-CaCO3 Content on the Crystallization, Mechanical Properties, and Cell Structure of PP Nanocomposites in Microcellular Injection Molding" Polymers 10, no. 10: 1160. https://doi.org/10.3390/polym10101160