Electrical Conductivity Modeling and Fabrication of Carbon Nanotubes/Silicone Rubber Composites for High Voltage Insulators in Regions With a Polluted Atmosphere
Restricted accessResearch articleFirst published online July, 2023
Electrical Conductivity Modeling and Fabrication of Carbon Nanotubes/Silicone Rubber Composites for High Voltage Insulators in Regions With a Polluted Atmosphere
The condensation mechanism of the insulators’ surface, increase the surface electrical conductivity. The electrical conductivity of the insulator creates a high level of leakage current and causes the failure. Difference between the dew point and the surface temperature of the insulator which occur due to radiative cooling mechanism, is the major reason of the moisture condensation on the polluted insulator surface. To compensate for the temperature difference, carbon nanotubes (CNTs) are being added to the silicone rubber housing material. The main idea of this research is based on generating joule heating by reducing the surface resistance of high voltage insulators. For this purpose, a developed model based on Halpin–Tsai formulation for tensile modulus of nanocomposites is joined with the conventional power-law model for the effective electrical conductivity of silicone rubber matrix carbon nanotube composite (SMCNT). SMCNT samples are prepared with the addition of various CNT volume fractions to high temperature vulcanizing (HTV) silicone rubber by melt-blending method. The developed model reveals that the high fraction of thinner and longer CNT, thicker interphase, higher concentration of percolated CNT, lower waviness of CNT, and higher conductivity of CNT can make a higher effective conductivity for SMCNT.
MohammadnabiSRahmaniK. Influence of humidity and contamination on the leakage current of 230-kV composite insulator. Electric Power Syst Res2021; 194: 107083.
2.
MizunoYNaitoKSuzukiY, et al.Voltage and temperature distribution along semiconducting glaze insulator strings. IEEE Transactions Dielectrics Electrical Insulation1999; 6(1): 100–104.
3.
FofanaIN’choJSBetieA, et al.Lessons to learn from post-installation pollution levels assessment of some distribution insulators. Energies2020; 13(16): 4064.
4.
NekahiAMcMeekinSFarzanehM. Measurement of surface resistance of silicone rubber sheets under polluted and dry band conditions. Electr Eng2018; 100(3): 1729–1738.
5.
YiYSunYWangL, et al.Impacts of moisture absorption on electrical properties of rigid polyurethane foam for composite post insulator of UHVDC transmission line. Int J Electr Power Energ Syst2021; 131: 107098.
6.
QiaoXZhangZJiangX, et al.AC failure voltage of iced and contaminated composite insulators in different natural environments. Int J Electr Power Energ Syst2020; 120: 105993.
7.
SavadkoohiEMMirzaieMSeyyedbarzegarS, et al.Experimental investigation on composite insulators AC flashover performance with fan-shaped non-uniform pollution under electro-thermal stress. Int J Electr Power Energ Syst2020; 121: 106142.
8.
JaiswalVFarzanehMLowtherD. Impulse flashover performance of semiconducting glazed station insulator under icing conditions based on field calculations by finite-element method. IEE Proceedings-Generation, Transm Distribution2005; 152(6): 864–870.
9.
Study of ice accumulation on nanocomposite semiconducting coatings, FarzanehM (eds). Annual Report Conference on Electrical Insulation and Dielectic Phenomena. IEEE, 2010.
10.
WeiXJiaZSunZ, et al.Study of anti-icing performance of insulator strings bottom-coated with semiconductive silicone rubber coating. IEEE Trans Dielectrics Electr Insul2012; 19(6): 2063–2072.
11.
XuZJiaZLiZ, et al.Anti-icing performance of RTV coatings on porcelain insulators by controlling the leakage current. IEEE Transactions Dielectrics Electr Insul2011; 18(3): 760–766.
12.
LiaoWJiaZGuanZ, et al.Reducing ice accumulation on insulators by applying semiconducting RTV silicone coating. IEEE Trans Dielectrics Electr Insul2007; 14(6): 1446–1454.
13.
WangXXuTAndradeMJd, et al.The interfacial shear strength of carbon nanotube sheet modified carbon fiber composites, Challenges Mech Time Dependent Mater2021; 2: 25–32.
14.
BaiYLiuRLiE, et al.Graphene/Carbon Nanotube/Bacterial Cellulose assisted supporting for polypyrrole towards flexible supercapacitor applications. J Alloys Compounds2019; 777: 524–530.
15.
TakedaTShindoYKuronumaY, et al.Modeling and characterization of the electrical conductivity of carbon nanotube-based polymer composites. Polymer2011; 52(17): 3852–3856.
16.
ZareYRheeKYParkS-J. A modeling methodology to investigate the effect of interfacial adhesion on the yield strength of MMT reinforced nanocomposites. J Industrial Engineering Chemistry2019; 69: 331–337.
17.
AmraeiJJamJEArabB, et al. Modeling the interphase region in carbon nanotube‐reinforced polymer nanocomposites. Polym Composites2019; 40(S2): E1219.
18.
CaoDMalakootiSKulkarniVN, et al.Nanoindentation measurement of core–skin interphase viscoelastic properties in a sandwich glass composite. Mech Time-dependent Mater2021; 25(3): 353–363.
19.
CaoDMalakootiSKulkarniVN, et al.The effect of resin uptake on the flexural properties of compression molded sandwich composites. Wind Energy2022; 25(1): 71–93.
20.
DengFZhengQ-S. An analytical model of effective electrical conductivity of carbon nanotube composites. Appl Phys Lett2008; 92(7): 071902.
21.
ZareYRheeKYParkS-J. A developed equation for electrical conductivity of polymer carbon nanotubes (CNT) nanocomposites based on Halpin-Tsai model. Results Phys2019; 14: 102406.
22.
BartonRLKeithJMKingJA. Electrical conductivity model evaluation of carbon fiber filled liquid crystal polymer composites. J Applied Polymer Science2007; 106(4): 2456–2462.
TaherianRHadianfardMJGolikandAN. A new equation for predicting electrical conductivity of carbon‐filled polymer composites used for bipolar plates of fuel cells. J Applied Polymer Science2013; 128(3): 1497–1509.
25.
Vargas-BernalRHerrera-PérezGCalixto-OlaldeM, et al.Analysis of DC electrical conductivity models of carbon nanotube-polymer composites with potential application to nanometric electronic devices. J Electr Computer Eng2013; 2013.
26.
SohiNBhadraSKhastgirD. The effect of different carbon fillers on the electrical conductivity of ethylene vinyl acetate copolymer-based composites and the applicability of different conductivity models. Carbon2011; 49(4): 1349–1361.
27.
MamunyaYPDavydenkoVPissisP, et al.Electrical and thermal conductivity of polymers filled with metal powders. Eur Polymer Journal2002; 38(9): 1887–1897.
CaiW-ZTuS-TGongJ-M. A physically based percolation model of the effective electrical conductivity of particle filled composites. J Composite Materials2006; 40(23): 2131–2142.
30.
RadhakrishnanSRamanujamBAdhikariA, et al.High-temperature, polymer–graphite hybrid composites for bipolar plates: effect of processing conditions on electrical properties. J Power Sourc2007; 163(2): 702–707.
31.
AntunesRADe OliveiraMCEttG, et al.Carbon materials in composite bipolar plates for polymer electrolyte membrane fuel cells: A review of the main challenges to improve electrical performance. J Power Sourc2011; 196(6): 2945–2961.
32.
KimYJShinTSDo ChoiH, et al.Electrical conductivity of chemically modified multiwalled carbon nanotube/epoxy composites. Carbon2005; 43(1): 23–30.
33.
ZareYRheeKY. Definition of “b” exponent and development of power-law model for electrical conductivity of polymer carbon nanotubes nanocomposites. Results Phys2020; 16: 102945.
34.
ZareYRhimSGarmabiH, et al.A simple model for constant storage modulus of poly (lactic acid)/poly (ethylene oxide)/carbon nanotubes nanocomposites at low frequencies assuming the properties of interphase regions and networks. J Mechanical Behavior Biomedical Materials2018; 80: 164–170.
35.
WanHDelaleFShenL. Effect of CNT length and CNT-matrix interphase in carbon nanotube (CNT) reinforced composites. Mech Res Commun2005; 32(5): 481–489.
36.
ChenLOzisikRSchadlerLS. The influence of carbon nanotube aspect ratio on the foam morphology of MWNT/PMMA nanocomposite foams. Polymer2010; 51(11): 2368–2375.
37.
YangJZhangYWangZ, et al.Influences of high aspect ratio carbon nanotube network on normal stress difference measurements and extrusion behaviors for isotactic polypropylene nanocomposite melts. RSC Advances2014; 4(3): 1246–1255.
38.
OxfallHAriuGGkourmpisT, et al.Effect of carbon black on electrical and rheological properties of graphite nanoplatelets/poly (ethylene-butyl acrylate) composites. eXPRESS Polym Lett2015; 9(1).
