Synthesis and Diagnostics of Nanostructured Micaless Microcomposite as a Prospective Insulation Material for Rotating Machines
Abstract
:1. Introduction
2. Materials
2.1. Matrix
2.2. Filler and Coupling Agent
2.3. Reinforcement
2.4. Synthesis of Nanostructured Micaless Microcomposite
2.5. X-ray Diffraction Analyses of Synthesized and Commonly Used Composites
3. Methods
3.1. Key Dielectric Parameters
3.2. Broadband Dielectric Spectroscopy
3.3. Resorption Current Analysis
3.4. Partial Discharges Measurement
4. Results and Discussion
4.1. Key Dielectric Parameters
4.2. Broadband Dielectric Spectroscopy
4.3. Resorption Current Analysis
4.4. Partial Discharges Measurement
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
Abbreviations
BDS | Broadband Dielectric Spectroscopy |
GLYMO | -glycidoxypropyltrimethoxysilane |
PEN | Polyethylene napthalate |
PET | Polyethylene terepthalate |
PDs | Partial Discharges |
PRPD | Phase Resolved Partial Discharge |
ST | Surface-treated |
VPI | Vacuum Pressure Impregnation |
XRD | X-ray Diffraction |
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Parameter | Test Voltage (V) | Frequency (Hz) | Temperature (°C) |
---|---|---|---|
Dielectric strength | ↑ 3 kV/s | 50 (AC) | |
Dissipation factor | 1000 | 50 (AC) | 23 ± 2 |
Volume resistivity | 1000 | DC |
Sample | min (kV/mm) | max tan (-) | min (m) |
---|---|---|---|
A—Nanostructured micaless microcomposite | 53.2 | 0.00452 | 4.84 × 1014 |
B—PET reinforced mica composite [28] | 50 | 0.015 | 1 × 1013 |
C—Glass reinforced mica composite [28] | 35 | 0.015 | 1 × 1013 |
Sample | Area over Curve (-) | Time Constant (s) |
---|---|---|
A—Nanostructured micaless microcomposite | 2.08 × 10−8 | 5.8 |
B—PET reinforced mica composite | 5.89 × 10−8 | 7.2 |
C—Glass reinforced mica composite | 9.32 × 10−8 | 8.8 |
Sample | PD Inception (kV/mm) | Charge Qiec 1 (pC) | Charge Qiec 2 (pC) |
---|---|---|---|
A—Nanostructured micaless microcomposite | 18.5 | 10 | 10 |
B—PET reinforced composite | 16.6 | 20 | 37 |
C—Glass reinforced composite | 10 | 25 | 117 |
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Hornak, J.; Mentlík, V.; Trnka, P.; Šutta, P. Synthesis and Diagnostics of Nanostructured Micaless Microcomposite as a Prospective Insulation Material for Rotating Machines. Appl. Sci. 2019, 9, 2926. https://doi.org/10.3390/app9142926
Hornak J, Mentlík V, Trnka P, Šutta P. Synthesis and Diagnostics of Nanostructured Micaless Microcomposite as a Prospective Insulation Material for Rotating Machines. Applied Sciences. 2019; 9(14):2926. https://doi.org/10.3390/app9142926
Chicago/Turabian StyleHornak, Jaroslav, Václav Mentlík, Pavel Trnka, and Pavol Šutta. 2019. "Synthesis and Diagnostics of Nanostructured Micaless Microcomposite as a Prospective Insulation Material for Rotating Machines" Applied Sciences 9, no. 14: 2926. https://doi.org/10.3390/app9142926