Modeling the Thermal Conductivity Inhomogeneities of Injection-Molded Particle-Filled Composites, Caused by Segregation
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. The Preparation of the Samples
2.3. The Investigation of Segregation
2.4. The Measurement of Thermal Conductivity
3. Results and Discussion
3.1. Morphological Investigation
3.2. Model for the Segregation of Glass Beads
3.3. Thermal Conductivity of the Samples
3.4. Developing a Model for Segregation
- λ’m = 0.25 W/mK
- ϕmax = 63%
- C = 1.12
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Parameter | Unit | Value |
---|---|---|
Volume | [cm3] | 44 |
Switch-over volume | [cm3] | 8 |
Plasticizing speed | [m/min] | 20 |
Injection rate | [cm3/s] | 80 |
Holding pressure | [bar] | 350 |
Clamping force | [tonne] | 70 |
Cooling time | [s] | 25 |
Zone temperatures | [°C] | 230; 225; 220; 215; 210 |
Mold temperature | [°C] | 40 |
Nominal Filler Concentration | Unit | 5 vol % | 10 vol % | 20 vol % |
---|---|---|---|---|
ϕ0 | [vol %] | 4.4 | 11.1 | 20.5 |
ϕend | [vol %] | 4.2 | 12 | 22.1 |
s | [1/mm] | 0.15 | 0.15 | 0.15 |
li | [mm] | 40 | 26.6 | 24 |
RMSE | [vol %] | 0.05 | 0.15 | 0.12 |
Nominal Filler Concentration | Unit | 5 vol % | 10 vol % | 20 vol % |
---|---|---|---|---|
ϕ0 | [vol %] | 3.2 | 10 | 17.3 |
ϕend | [vol %] | 4.6 | 14.1 | 23.9 |
s | [1/mm] | 0.15 | 0.15 | 0.15 |
li | [mm] | 45 | 38 | 35.5 |
RMSE | [vol %] | 0.02 | 0.04 | 0.4 |
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Suplicz, A.; Semperger, O.V.; Kovács, J.G. Modeling the Thermal Conductivity Inhomogeneities of Injection-Molded Particle-Filled Composites, Caused by Segregation. Polymers 2019, 11, 1691. https://doi.org/10.3390/polym11101691
Suplicz A, Semperger OV, Kovács JG. Modeling the Thermal Conductivity Inhomogeneities of Injection-Molded Particle-Filled Composites, Caused by Segregation. Polymers. 2019; 11(10):1691. https://doi.org/10.3390/polym11101691
Chicago/Turabian StyleSuplicz, András, Orsolya Viktória Semperger, and József Gábor Kovács. 2019. "Modeling the Thermal Conductivity Inhomogeneities of Injection-Molded Particle-Filled Composites, Caused by Segregation" Polymers 11, no. 10: 1691. https://doi.org/10.3390/polym11101691