Voltage and Temperature Coefficients of Resistance of Polyethylene/ Nanocarbon-Based Thick Film Composites: Melt-Mixing Versus Melt-Infiltration Synthesis

Abstract

Carbon-composed resistors, thick film resistors, and chip resistors are commonly used in Electronics. They are prepared by mixing carbon-based materials with metal oxides or polymers and present not only some clear advantages such as low cost and easy processing, but also some unwanted characteristics such as voltage and temperature dependence of the electrical properties. Considering that the polymer-carbon mixing process induces high values for the voltage and temperature resistance coefficients (VCR, TCR) of the composites, we have developed a new method for preparing polymer/nanocarbon thick films (the melt-infiltration method) which minimizes these values. Direct current electrical measurements show VCR values of almost two orders of magnitude lower for polyethylene/nanocarbon thick film composites prepared by melt-infiltration than for composites prepared by melt-mixing (—0.04%/V and —2.5%/V, respectively).

Keywords

polymer nanocarbon composite melt-infiltration film.

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References

Jager, K.M. and McQueen, D.H. ( 2001). Fractal Agglomerates and Electrical Conductivity in Carbon Black Polymer Composites, Polymer, 42(23): 9575-9581.

Schmidt, R.H. , Kinloch, I.A. , Burgess, A.N. and Windle, A.H. (2007). The Effect of Aggregation on the Electrical Conductivity of Spin-coated Polymer/ Carbon Nanotube Composite Films, Langmuir, 23(10): 5707-5712.

Yin, X.H. , Yoshino, K. , Yamamoto, H. , Watanuki, T. , Isa, I. , Nakagawa, S. and Adachi, M. (1996). Electrical Conduction near Percolation Threshold in Polymer Composite Containing Conducting Polypyrrole-coated Insulating Polymer Fiber, Japanese Journal of Applied Physics , 35(1): 4692-4695.

Miyasaka, K. , Watanabe, K. , Jojima, E. , Aida, H. , Sumita, M. and Ishikawa, K. (1982). Electrical Conductivity of Carbon-Polymer Composites as a Function of Carbon Content, Journal of Materials Science, 17(6): 1610-1616.

Zhang, Q. , Rastogi, S. , Chen, D. , Lippits, D. and Lemstra, P.J. ( 2006). Low Percolation Threshold in Single-walled Carbon Nanotube/High Density Polyethylene Composites Prepared by Melt Processing Technique, Carbon, 44(4): 778-785.

Buzan, F.E. , Grier, J.D. , Bertsch, B.E. and Thoryk, H. ( 1978). A Thick Film Base Metal Resistor and Compatible Hybrid System, Electrocomponent Science and Technology, 5(1): 15-25.

Yamada, Y. and Chung, D.D.L. ( 2008). Epoxy-based Carbon Films with High Electrical Conductivity Attached to an Alumina Substrate, Carbon, 46(13): 1792-1828.

Harper, C.A. ( 2001). Ceramics and Glasses in Microelectronics, In: Handbook of Ceramics, Glasses, and Diamonds, New York: McGraw-Hill.

Chunyu, L. , Thostenson, E.T. and Chou, T.W. ( 2005). Nanocomposites in Context: A Review, Composites Science and Technology, 65(3-4): 491-516.

10.

Sandu, I. , Dragomirescu, A. , Florescu, L.G. and Fleaca, C. ( 2009). Nanocarbon Film as a Percolation Network for Nanocarbon/Polymer Composites, Journal of Reinforced Plastics and Composites , 28(19): 2397-2404.

11.

Sandu, I. , Dumitrache, F. , Fleaca, C. , Cretu, O. and Morjan, I. ( 2009). The Synthesis of Free-standing Films of Polymer/Nanocarbon Composites Using the Carbon Nanopowder’s Buoyancy, Solid State Sciences, 11(10): 1793-1795.

12.

Sandu, I. , Morjan, I. , Dumitrache, F. , Fleaca, C.T. , Voicu, I. , Alexandrescu, R. , et al. (2009). Electrical Resistivity of Polymer/Nanocarbon Composite and Sandwich Free Standing Films Synthesised Through An ‘‘Inverse Stamping’’ Method , Journal of Nanostructured Polymers and Nanocomposites, 5(1): 3-8.

13.

Morjan, I. , Voicu, I. , Dumitrache, F. , Sandu, I. , Soare, I. , Alexandrescu, R. , et al. (2003). Carbon Nanopowders from the Continuous-wave CO2 Laser-induced Pyrolysis of Ethylene, Carbon, 41(15): 2913-2921.

14.

Kannarpady, G.K. , Mohan, B. and Bhattacharyya , A. (2007). Nonlinear Surface Electrical Resistivity of Graphite-polyurethane Composite Films, Journal of Applied Polymer Science, 106(1): 293-298.

15.

Zhu, D. , Bin, Y. and Matsuo, M. (2007). Electrical Conducting Behaviors in Polymeric Composites with Carbonaceous Fillers, Journal of Polymer Science: Part B: Polymer Physics, 45(9): 1037-1044.